increase crawl timeout

Co-authored-by: Manu NALEPA <enalepa@offchainlabs.com>

.gitignore

@@ -38,6 +38,7 @@ metaData
 
 # execution API authentication
 jwt.hex
+execution/
 
 # manual testing
 tmp

BUILD.bazel

@@ -1,4 +1,5 @@
 load("@bazel_gazelle//:def.bzl", "gazelle")
+load("@com_github_atlassian_bazel_tools//gometalinter:def.bzl", "gometalinter")
 load("@com_github_atlassian_bazel_tools//goimports:def.bzl", "goimports")
 load("@io_kubernetes_build//defs:run_in_workspace.bzl", "workspace_binary")
 load("@io_bazel_rules_go//go:def.bzl", "nogo")
@@ -54,6 +55,15 @@ alias(
     visibility = ["//visibility:public"],
 )
 
+gometalinter(
+    name = "gometalinter",
+    config = "//:.gometalinter.json",
+    paths = [
+        "./...",
+    ],
+    prefix = prefix,
+)
+
 goimports(
     name = "goimports",
     display_diffs = True,

CHANGELOG.md

@@ -4,25 +4,6 @@ All notable changes to this project will be documented in this file.
 
 The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.
 
-## [v7.1.2](https://github.com/prysmaticlabs/prysm/compare/v7.1.1...v7.1.2) - 2026-01-07
-
-Happy new year! This patch release is very small. The main improvement is better management of pending attestation aggregation via [PR 16153](https://github.com/OffchainLabs/prysm/pull/16153).
-
-### Added
-
-- `primitives.BuilderIndex`: SSZ `uint64` wrapper for builder registry indices. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16169)
-
-### Changed
-
-- the /eth/v2/beacon/pool/attestations and /eth/v1/beacon/pool/sync_committees now returns a 503 error if the node is still syncing, the rest api is also working in a similar process to gRPC broadcasting immediately now. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16152)
-- `validateDataColumn`: Remove error logs. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16157)
-- Pending aggregates: When multiple aggregated attestations only differing by the aggregator index are in the pending queue, only process one of them. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16153)
-
-### Fixed
-
-- Fix the missing fork version object mapping for Fulu in light client p2p. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16151)
-- Do not process slots and copy states for next epoch proposers after Fulu. [[PR]](https://github.com/prysmaticlabs/prysm/pull/16168)
-
 ## [v7.1.1](https://github.com/prysmaticlabs/prysm/compare/v7.1.0...v7.1.1) - 2025-12-18
 
 Release highlights:

DEPENDENCIES.md

@@ -72,7 +72,7 @@ Do NOT add new `go_repository` to the WORKSPACE file. All dependencies should li
 
 To enable conditional compilation and custom configuration for tests (where compiled code has more 
 debug info, while not being completely optimized), we rely on Go's build tags/constraints mechanism 
-(see official docs on [build constraints](https://pkg.go.dev/go/build#hdr-Build_Constraints)). 
+(see official docs on [build constraints](https://golang.org/pkg/go/build/#hdr-Build_Constraints)). 
 Therefore, whenever using `go test`, do not forget to pass in extra build tag, eg:
 
 ```bash

INTEROP.md

@@ -9,7 +9,7 @@ This README details how to setup Prysm for interop testing for usage with other
 
 ## Installation & Setup
 
-1. Install [Bazel](https://bazel.build/install) **(Recommended)**
+1. Install [Bazel](https://docs.bazel.build/versions/master/install.html) **(Recommended)**
 2. `git clone https://github.com/OffchainLabs/prysm && cd prysm`
 3. `bazel build //cmd/...`
 

README.md

@@ -15,7 +15,7 @@
 
 ## 📖 Overview
 
-This is the core repository for Prysm, a [Golang](https://go.dev/) implementation of the [Ethereum Consensus](https://ethereum.org/en/developers/docs/consensus-mechanisms/#proof-of-stake) [specification](https://github.com/ethereum/consensus-specs), developed by [Offchain Labs](https://www.offchainlabs.com).
+This is the core repository for Prysm, a [Golang](https://golang.org/) implementation of the [Ethereum Consensus](https://ethereum.org/en/developers/docs/consensus-mechanisms/#proof-of-stake) [specification](https://github.com/ethereum/consensus-specs), developed by [Offchain Labs](https://www.offchainlabs.com).
 
 See the [Changelog](https://github.com/OffchainLabs/prysm/releases) for details of the latest releases and upcoming breaking changes.
 
@@ -23,7 +23,7 @@ See the [Changelog](https://github.com/OffchainLabs/prysm/releases) for details
 
 ## 🚀 Getting Started
 
-A detailed set of installation and usage instructions as well as breakdowns of each individual component are available in the **[official documentation portal](https://prysm.offchainlabs.com/docs/)**.
+A detailed set of installation and usage instructions as well as breakdowns of each individual component are available in the **[official documentation portal](https://docs.prylabs.network)**.
 
 💬 **Need help?** Join our **[Discord Community](https://discord.gg/prysm)** for support.
 
@@ -51,7 +51,7 @@ Prysm maintains two permanent branches:
 
 ### 🛠 Contribution Guide
 
-Want to get involved? Check out our **[Contribution Guide](https://prysm.offchainlabs.com/docs/contribute/contribution-guidelines/)** to learn more!
+Want to get involved? Check out our **[Contribution Guide](https://docs.prylabs.network/docs/contribute/contribution-guidelines/)** to learn more!
 
 ---
 

WORKSPACE

@@ -273,16 +273,16 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.7.0-alpha.1"
+consensus_spec_version = "v1.6.0"
 
 load("@prysm//tools:download_spectests.bzl", "consensus_spec_tests")
 
 consensus_spec_tests(
     name = "consensus_spec_tests",
     flavors = {
-        "general": "sha256-j5R3jA7Oo4OSDMTvpMuD+8RomaCByeFSwtfkq6fL0Zg=",
-        "minimal": "sha256-tdTqByoyswOS4r6OxFmo70y2BP7w1TgEok+gf4cbxB0=",
-        "mainnet": "sha256-5gB4dt6SnSDKzdBc06VedId3NkgvSYyv9n9FRxWKwYI=",
+        "general": "sha256-54hTaUNF9nLg+hRr3oHoq0yjZpW3MNiiUUuCQu6Rajk=",
+        "minimal": "sha256-1JHIGg3gVMjvcGYRHR5cwdDgOvX47oR/MWp6gyAeZfA=",
+        "mainnet": "sha256-292h3W2Ffts0YExgDTyxYe9Os7R0bZIXuAaMO8P6kl4=",
     },
     version = consensus_spec_version,
 )
@@ -298,7 +298,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-J+43DrK1pF658kTXTwMS6zGf4KDjvas++m8w2a8swpg=",
+    integrity = "sha256-VzBgrEokvYSMIIXVnSA5XS9I3m9oxpvToQGxC1N5lzw=",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )
@@ -423,6 +423,10 @@ load("@prysm//testing/endtoend:deps.bzl", "e2e_deps")
 
 e2e_deps()
 
+load("@com_github_atlassian_bazel_tools//gometalinter:deps.bzl", "gometalinter_dependencies")
+
+gometalinter_dependencies()
+
 load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies")
 
 gazelle_dependencies(go_sdk = "go_sdk")

api/server/structs/block.go

@@ -503,77 +503,3 @@ func (s *SignedBlindedBeaconBlockFulu) MessageRawJson() ([]byte, error) {
 func (s *SignedBlindedBeaconBlockFulu) SigString() string {
 	return s.Signature
 }
-
-// ----------------------------------------------------------------------------
-// Gloas
-// ----------------------------------------------------------------------------
-
-type ExecutionPayloadBid struct {
-	ParentBlockHash        string `json:"parent_block_hash"`
-	ParentBlockRoot        string `json:"parent_block_root"`
-	BlockHash              string `json:"block_hash"`
-	PrevRandao             string `json:"prev_randao"`
-	FeeRecipient           string `json:"fee_recipient"`
-	GasLimit               string `json:"gas_limit"`
-	BuilderIndex           string `json:"builder_index"`
-	Slot                   string `json:"slot"`
-	Value                  string `json:"value"`
-	ExecutionPayment       string `json:"execution_payment"`
-	BlobKzgCommitmentsRoot string `json:"blob_kzg_commitments_root"`
-}
-
-type SignedExecutionPayloadBid struct {
-	Message   *ExecutionPayloadBid `json:"message"`
-	Signature string               `json:"signature"`
-}
-
-type PayloadAttestationData struct {
-	BeaconBlockRoot   string `json:"beacon_block_root"`
-	Slot              string `json:"slot"`
-	PayloadPresent    bool   `json:"payload_present"`
-	BlobDataAvailable bool   `json:"blob_data_available"`
-}
-
-type PayloadAttestation struct {
-	AggregationBits string                  `json:"aggregation_bits"`
-	Data            *PayloadAttestationData `json:"data"`
-	Signature       string                  `json:"signature"`
-}
-
-type BeaconBlockBodyGloas struct {
-	RandaoReveal              string                        `json:"randao_reveal"`
-	Eth1Data                  *Eth1Data                     `json:"eth1_data"`
-	Graffiti                  string                        `json:"graffiti"`
-	ProposerSlashings         []*ProposerSlashing           `json:"proposer_slashings"`
-	AttesterSlashings         []*AttesterSlashingElectra    `json:"attester_slashings"`
-	Attestations              []*AttestationElectra         `json:"attestations"`
-	Deposits                  []*Deposit                    `json:"deposits"`
-	VoluntaryExits            []*SignedVoluntaryExit        `json:"voluntary_exits"`
-	SyncAggregate             *SyncAggregate                `json:"sync_aggregate"`
-	BLSToExecutionChanges     []*SignedBLSToExecutionChange `json:"bls_to_execution_changes"`
-	SignedExecutionPayloadBid *SignedExecutionPayloadBid    `json:"signed_execution_payload_bid"`
-	PayloadAttestations       []*PayloadAttestation         `json:"payload_attestations"`
-}
-
-type BeaconBlockGloas struct {
-	Slot          string                `json:"slot"`
-	ProposerIndex string                `json:"proposer_index"`
-	ParentRoot    string                `json:"parent_root"`
-	StateRoot     string                `json:"state_root"`
-	Body          *BeaconBlockBodyGloas `json:"body"`
-}
-
-type SignedBeaconBlockGloas struct {
-	Message   *BeaconBlockGloas `json:"message"`
-	Signature string            `json:"signature"`
-}
-
-var _ SignedMessageJsoner = &SignedBeaconBlockGloas{}
-
-func (s *SignedBeaconBlockGloas) MessageRawJson() ([]byte, error) {
-	return json.Marshal(s.Message)
-}
-
-func (s *SignedBeaconBlockGloas) SigString() string {
-	return s.Signature
-}

api/server/structs/conversions_block.go

@@ -268,8 +268,6 @@ func SignedBeaconBlockMessageJsoner(block interfaces.ReadOnlySignedBeaconBlock)
 		return SignedBlindedBeaconBlockFuluFromConsensus(pbStruct)
 	case *eth.SignedBeaconBlockFulu:
 		return SignedBeaconBlockFuluFromConsensus(pbStruct)
-	case *eth.SignedBeaconBlockGloas:
-		return SignedBeaconBlockGloasFromConsensus(pbStruct)
 	default:
 		return nil, ErrUnsupportedConversion
 	}
@@ -2887,379 +2885,3 @@ func SignedBeaconBlockFuluFromConsensus(b *eth.SignedBeaconBlockFulu) (*SignedBe
 		Signature: hexutil.Encode(b.Signature),
 	}, nil
 }
-
-// ----------------------------------------------------------------------------
-// Gloas
-// ----------------------------------------------------------------------------
-
-func SignedBeaconBlockGloasFromConsensus(b *eth.SignedBeaconBlockGloas) (*SignedBeaconBlockGloas, error) {
-	block, err := BeaconBlockGloasFromConsensus(b.Block)
-	if err != nil {
-		return nil, err
-	}
-	return &SignedBeaconBlockGloas{
-		Message:   block,
-		Signature: hexutil.Encode(b.Signature),
-	}, nil
-}
-
-func BeaconBlockGloasFromConsensus(b *eth.BeaconBlockGloas) (*BeaconBlockGloas, error) {
-	payloadAttestations := make([]*PayloadAttestation, len(b.Body.PayloadAttestations))
-	for i, pa := range b.Body.PayloadAttestations {
-		payloadAttestations[i] = PayloadAttestationFromConsensus(pa)
-	}
-
-	return &BeaconBlockGloas{
-		Slot:          fmt.Sprintf("%d", b.Slot),
-		ProposerIndex: fmt.Sprintf("%d", b.ProposerIndex),
-		ParentRoot:    hexutil.Encode(b.ParentRoot),
-		StateRoot:     hexutil.Encode(b.StateRoot),
-		Body: &BeaconBlockBodyGloas{
-			RandaoReveal:              hexutil.Encode(b.Body.RandaoReveal),
-			Eth1Data:                  Eth1DataFromConsensus(b.Body.Eth1Data),
-			Graffiti:                  hexutil.Encode(b.Body.Graffiti),
-			ProposerSlashings:         ProposerSlashingsFromConsensus(b.Body.ProposerSlashings),
-			AttesterSlashings:         AttesterSlashingsElectraFromConsensus(b.Body.AttesterSlashings),
-			Attestations:              AttsElectraFromConsensus(b.Body.Attestations),
-			Deposits:                  DepositsFromConsensus(b.Body.Deposits),
-			VoluntaryExits:            SignedExitsFromConsensus(b.Body.VoluntaryExits),
-			SyncAggregate:             SyncAggregateFromConsensus(b.Body.SyncAggregate),
-			BLSToExecutionChanges:     SignedBLSChangesFromConsensus(b.Body.BlsToExecutionChanges),
-			SignedExecutionPayloadBid: SignedExecutionPayloadBidFromConsensus(b.Body.SignedExecutionPayloadBid),
-			PayloadAttestations:       payloadAttestations,
-		},
-	}, nil
-}
-
-func SignedExecutionPayloadBidFromConsensus(b *eth.SignedExecutionPayloadBid) *SignedExecutionPayloadBid {
-	return &SignedExecutionPayloadBid{
-		Message:   ExecutionPayloadBidFromConsensus(b.Message),
-		Signature: hexutil.Encode(b.Signature),
-	}
-}
-
-func ExecutionPayloadBidFromConsensus(b *eth.ExecutionPayloadBid) *ExecutionPayloadBid {
-	return &ExecutionPayloadBid{
-		ParentBlockHash:        hexutil.Encode(b.ParentBlockHash),
-		ParentBlockRoot:        hexutil.Encode(b.ParentBlockRoot),
-		BlockHash:              hexutil.Encode(b.BlockHash),
-		PrevRandao:             hexutil.Encode(b.PrevRandao),
-		FeeRecipient:           hexutil.Encode(b.FeeRecipient),
-		GasLimit:               fmt.Sprintf("%d", b.GasLimit),
-		BuilderIndex:           fmt.Sprintf("%d", b.BuilderIndex),
-		Slot:                   fmt.Sprintf("%d", b.Slot),
-		Value:                  fmt.Sprintf("%d", b.Value),
-		ExecutionPayment:       fmt.Sprintf("%d", b.ExecutionPayment),
-		BlobKzgCommitmentsRoot: hexutil.Encode(b.BlobKzgCommitmentsRoot),
-	}
-}
-
-func PayloadAttestationFromConsensus(pa *eth.PayloadAttestation) *PayloadAttestation {
-	return &PayloadAttestation{
-		AggregationBits: hexutil.Encode(pa.AggregationBits),
-		Data:            PayloadAttestationDataFromConsensus(pa.Data),
-		Signature:       hexutil.Encode(pa.Signature),
-	}
-}
-
-func PayloadAttestationDataFromConsensus(d *eth.PayloadAttestationData) *PayloadAttestationData {
-	return &PayloadAttestationData{
-		BeaconBlockRoot:   hexutil.Encode(d.BeaconBlockRoot),
-		Slot:              fmt.Sprintf("%d", d.Slot),
-		PayloadPresent:    d.PayloadPresent,
-		BlobDataAvailable: d.BlobDataAvailable,
-	}
-}
-
-func (b *SignedBeaconBlockGloas) ToConsensus() (*eth.SignedBeaconBlockGloas, error) {
-	if b == nil {
-		return nil, errNilValue
-	}
-
-	sig, err := bytesutil.DecodeHexWithLength(b.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
-	block, err := b.Message.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Message")
-	}
-	return &eth.SignedBeaconBlockGloas{
-		Block:     block,
-		Signature: sig,
-	}, nil
-}
-
-func (b *BeaconBlockGloas) ToConsensus() (*eth.BeaconBlockGloas, error) {
-	if b == nil {
-		return nil, errNilValue
-	}
-	if b.Body == nil {
-		return nil, server.NewDecodeError(errNilValue, "Body")
-	}
-	if b.Body.Eth1Data == nil {
-		return nil, server.NewDecodeError(errNilValue, "Body.Eth1Data")
-	}
-	if b.Body.SyncAggregate == nil {
-		return nil, server.NewDecodeError(errNilValue, "Body.SyncAggregate")
-	}
-	if b.Body.SignedExecutionPayloadBid == nil {
-		return nil, server.NewDecodeError(errNilValue, "Body.SignedExecutionPayloadBid")
-	}
-
-	slot, err := strconv.ParseUint(b.Slot, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Slot")
-	}
-	proposerIndex, err := strconv.ParseUint(b.ProposerIndex, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ProposerIndex")
-	}
-	parentRoot, err := bytesutil.DecodeHexWithLength(b.ParentRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ParentRoot")
-	}
-	stateRoot, err := bytesutil.DecodeHexWithLength(b.StateRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "StateRoot")
-	}
-	body, err := b.Body.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Body")
-	}
-	return &eth.BeaconBlockGloas{
-		Slot:          primitives.Slot(slot),
-		ProposerIndex: primitives.ValidatorIndex(proposerIndex),
-		ParentRoot:    parentRoot,
-		StateRoot:     stateRoot,
-		Body:          body,
-	}, nil
-}
-
-func (b *BeaconBlockBodyGloas) ToConsensus() (*eth.BeaconBlockBodyGloas, error) {
-	if b == nil {
-		return nil, errNilValue
-	}
-
-	randaoReveal, err := bytesutil.DecodeHexWithLength(b.RandaoReveal, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "RandaoReveal")
-	}
-	depositRoot, err := bytesutil.DecodeHexWithLength(b.Eth1Data.DepositRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Eth1Data.DepositRoot")
-	}
-	depositCount, err := strconv.ParseUint(b.Eth1Data.DepositCount, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Eth1Data.DepositCount")
-	}
-	blockHash, err := bytesutil.DecodeHexWithLength(b.Eth1Data.BlockHash, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Eth1Data.BlockHash")
-	}
-	graffiti, err := bytesutil.DecodeHexWithLength(b.Graffiti, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Graffiti")
-	}
-	proposerSlashings, err := ProposerSlashingsToConsensus(b.ProposerSlashings)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ProposerSlashings")
-	}
-	attesterSlashings, err := AttesterSlashingsElectraToConsensus(b.AttesterSlashings)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "AttesterSlashings")
-	}
-	atts, err := AttsElectraToConsensus(b.Attestations)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Attestations")
-	}
-	deposits, err := DepositsToConsensus(b.Deposits)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Deposits")
-	}
-	exits, err := SignedExitsToConsensus(b.VoluntaryExits)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "VoluntaryExits")
-	}
-	syncCommitteeBits, err := bytesutil.DecodeHexWithLength(b.SyncAggregate.SyncCommitteeBits, fieldparams.SyncAggregateSyncCommitteeBytesLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SyncAggregate.SyncCommitteeBits")
-	}
-	syncCommitteeSig, err := bytesutil.DecodeHexWithLength(b.SyncAggregate.SyncCommitteeSignature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SyncAggregate.SyncCommitteeSignature")
-	}
-	blsChanges, err := SignedBLSChangesToConsensus(b.BLSToExecutionChanges)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "BLSToExecutionChanges")
-	}
-	signedBid, err := b.SignedExecutionPayloadBid.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "SignedExecutionPayloadBid")
-	}
-	payloadAttestations, err := PayloadAttestationsToConsensus(b.PayloadAttestations)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "PayloadAttestations")
-	}
-
-	return &eth.BeaconBlockBodyGloas{
-		RandaoReveal: randaoReveal,
-		Eth1Data: &eth.Eth1Data{
-			DepositRoot:  depositRoot,
-			DepositCount: depositCount,
-			BlockHash:    blockHash,
-		},
-		Graffiti:          graffiti,
-		ProposerSlashings: proposerSlashings,
-		AttesterSlashings: attesterSlashings,
-		Attestations:      atts,
-		Deposits:          deposits,
-		VoluntaryExits:    exits,
-		SyncAggregate: &eth.SyncAggregate{
-			SyncCommitteeBits:      syncCommitteeBits,
-			SyncCommitteeSignature: syncCommitteeSig,
-		},
-		BlsToExecutionChanges:     blsChanges,
-		SignedExecutionPayloadBid: signedBid,
-		PayloadAttestations:       payloadAttestations,
-	}, nil
-}
-
-func (b *SignedExecutionPayloadBid) ToConsensus() (*eth.SignedExecutionPayloadBid, error) {
-	if b == nil {
-		return nil, errNilValue
-	}
-	sig, err := bytesutil.DecodeHexWithLength(b.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
-	message, err := b.Message.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Message")
-	}
-	return &eth.SignedExecutionPayloadBid{
-		Message:   message,
-		Signature: sig,
-	}, nil
-}
-
-func (b *ExecutionPayloadBid) ToConsensus() (*eth.ExecutionPayloadBid, error) {
-	if b == nil {
-		return nil, errNilValue
-	}
-	parentBlockHash, err := bytesutil.DecodeHexWithLength(b.ParentBlockHash, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ParentBlockHash")
-	}
-	parentBlockRoot, err := bytesutil.DecodeHexWithLength(b.ParentBlockRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ParentBlockRoot")
-	}
-	blockHash, err := bytesutil.DecodeHexWithLength(b.BlockHash, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "BlockHash")
-	}
-	prevRandao, err := bytesutil.DecodeHexWithLength(b.PrevRandao, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "PrevRandao")
-	}
-	feeRecipient, err := bytesutil.DecodeHexWithLength(b.FeeRecipient, fieldparams.FeeRecipientLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "FeeRecipient")
-	}
-	gasLimit, err := strconv.ParseUint(b.GasLimit, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "GasLimit")
-	}
-	builderIndex, err := strconv.ParseUint(b.BuilderIndex, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "BuilderIndex")
-	}
-	slot, err := strconv.ParseUint(b.Slot, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Slot")
-	}
-	value, err := strconv.ParseUint(b.Value, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Value")
-	}
-	executionPayment, err := strconv.ParseUint(b.ExecutionPayment, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "ExecutionPayment")
-	}
-	blobKzgCommitmentsRoot, err := bytesutil.DecodeHexWithLength(b.BlobKzgCommitmentsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "BlobKzgCommitmentsRoot")
-	}
-	return &eth.ExecutionPayloadBid{
-		ParentBlockHash:        parentBlockHash,
-		ParentBlockRoot:        parentBlockRoot,
-		BlockHash:              blockHash,
-		PrevRandao:             prevRandao,
-		FeeRecipient:           feeRecipient,
-		GasLimit:               gasLimit,
-		BuilderIndex:           primitives.BuilderIndex(builderIndex),
-		Slot:                   primitives.Slot(slot),
-		Value:                  primitives.Gwei(value),
-		ExecutionPayment:       primitives.Gwei(executionPayment),
-		BlobKzgCommitmentsRoot: blobKzgCommitmentsRoot,
-	}, nil
-}
-
-func PayloadAttestationsToConsensus(pa []*PayloadAttestation) ([]*eth.PayloadAttestation, error) {
-	if pa == nil {
-		return nil, errNilValue
-	}
-	result := make([]*eth.PayloadAttestation, len(pa))
-	for i, p := range pa {
-		converted, err := p.ToConsensus()
-		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("[%d]", i))
-		}
-		result[i] = converted
-	}
-	return result, nil
-}
-
-func (p *PayloadAttestation) ToConsensus() (*eth.PayloadAttestation, error) {
-	if p == nil {
-		return nil, errNilValue
-	}
-	aggregationBits, err := hexutil.Decode(p.AggregationBits)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "AggregationBits")
-	}
-	data, err := p.Data.ToConsensus()
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Data")
-	}
-	sig, err := bytesutil.DecodeHexWithLength(p.Signature, fieldparams.BLSSignatureLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Signature")
-	}
-	return &eth.PayloadAttestation{
-		AggregationBits: aggregationBits,
-		Data:            data,
-		Signature:       sig,
-	}, nil
-}
-
-func (d *PayloadAttestationData) ToConsensus() (*eth.PayloadAttestationData, error) {
-	if d == nil {
-		return nil, errNilValue
-	}
-	beaconBlockRoot, err := bytesutil.DecodeHexWithLength(d.BeaconBlockRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "BeaconBlockRoot")
-	}
-	slot, err := strconv.ParseUint(d.Slot, 10, 64)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Slot")
-	}
-	return &eth.PayloadAttestationData{
-		BeaconBlockRoot:   beaconBlockRoot,
-		Slot:              primitives.Slot(slot),
-		PayloadPresent:    d.PayloadPresent,
-		BlobDataAvailable: d.BlobDataAvailable,
-	}, nil
-}

beacon-chain/blockchain/BUILD.bazel

@@ -74,6 +74,7 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
         "//beacon-chain/verification:go_default_library",
+        "//cmd/beacon-chain/flags:go_default_library",
         "//config/features:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
@@ -173,6 +174,7 @@ go_test(
         "//beacon-chain/state/state-native:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
         "//beacon-chain/verification:go_default_library",
+        "//cmd/beacon-chain/flags:go_default_library",
         "//config/features:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",

beacon-chain/blockchain/kzg/BUILD.bazel

@@ -13,7 +13,7 @@ go_library(
     deps = [
         "//consensus-types/blocks:go_default_library",
         "@com_github_crate_crypto_go_kzg_4844//:go_default_library",
-        "@com_github_ethereum_c_kzg_4844_v2//bindings/go:go_default_library",
+        "@com_github_ethereum_c_kzg_4844//bindings/go:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_ethereum_go_ethereum//crypto/kzg4844:go_default_library",
         "@com_github_pkg_errors//:go_default_library",

beacon-chain/blockchain/metrics.go

@@ -221,19 +221,6 @@ var (
 			Buckets: []float64{1, 2, 4, 8, 16, 32},
 		},
 	)
-	commitmentCount = promauto.NewHistogram(
-		prometheus.HistogramOpts{
-			Name:    "commitment_count_max_21",
-			Help:    "The number of blob KZG commitments per block.",
-			Buckets: []float64{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21},
-		},
-	)
-	maxBlobsPerBlock = promauto.NewGauge(
-		prometheus.GaugeOpts{
-			Name: "max_blobs_per_block",
-			Help: "The maximum number of blobs allowed in a block.",
-		},
-	)
 )
 
 // reportSlotMetrics reports slot related metrics.

beacon-chain/blockchain/receive_attestation.go

@@ -94,7 +94,6 @@ func (s *Service) spawnProcessAttestationsRoutine() {
 		for {
 			select {
 			case <-s.ctx.Done():
-				ticker.Done()
 				return
 			case slotInterval := <-ticker.C():
 				if slotInterval.Interval > 0 {

beacon-chain/blockchain/receive_block.go

@@ -16,7 +16,6 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/slasher/types"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/config/features"
-	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -259,55 +258,32 @@ func (s *Service) handleDA(ctx context.Context, avs das.AvailabilityChecker, blo
 }
 
 func (s *Service) reportPostBlockProcessing(
-	signedBlock interfaces.SignedBeaconBlock,
+	block interfaces.SignedBeaconBlock,
 	blockRoot [32]byte,
 	receivedTime time.Time,
 	daWaitedTime time.Duration,
 ) {
-	block := signedBlock.Block()
-	if block == nil {
-		log.WithField("blockRoot", blockRoot).Error("Nil block")
-		return
-	}
-
 	// Reports on block and fork choice metrics.
 	cp := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
 	finalized := &ethpb.Checkpoint{Epoch: cp.Epoch, Root: bytesutil.SafeCopyBytes(cp.Root[:])}
-	reportSlotMetrics(block.Slot(), s.HeadSlot(), s.CurrentSlot(), finalized)
+	reportSlotMetrics(block.Block().Slot(), s.HeadSlot(), s.CurrentSlot(), finalized)
 
 	// Log block sync status.
 	cp = s.cfg.ForkChoiceStore.JustifiedCheckpoint()
 	justified := &ethpb.Checkpoint{Epoch: cp.Epoch, Root: bytesutil.SafeCopyBytes(cp.Root[:])}
-	if err := logBlockSyncStatus(block, blockRoot, justified, finalized, receivedTime, s.genesisTime, daWaitedTime); err != nil {
+	if err := logBlockSyncStatus(block.Block(), blockRoot, justified, finalized, receivedTime, s.genesisTime, daWaitedTime); err != nil {
 		log.WithError(err).Error("Unable to log block sync status")
 	}
-
 	// Log payload data
-	if err := logPayload(block); err != nil {
+	if err := logPayload(block.Block()); err != nil {
 		log.WithError(err).Error("Unable to log debug block payload data")
 	}
-
 	// Log state transition data.
-	if err := logStateTransitionData(block); err != nil {
+	if err := logStateTransitionData(block.Block()); err != nil {
 		log.WithError(err).Error("Unable to log state transition data")
 	}
-
 	timeWithoutDaWait := time.Since(receivedTime) - daWaitedTime
 	chainServiceProcessingTime.Observe(float64(timeWithoutDaWait.Milliseconds()))
-
-	body := block.Body()
-	if body == nil {
-		log.WithField("blockRoot", blockRoot).Error("Nil block body")
-		return
-	}
-
-	commitments, err := body.BlobKzgCommitments()
-	if err != nil {
-		log.WithError(err).Error("Unable to get blob KZG commitments")
-	}
-
-	commitmentCount.Observe(float64(len(commitments)))
-	maxBlobsPerBlock.Set(float64(params.BeaconConfig().MaxBlobsPerBlock(block.Slot())))
 }
 
 func (s *Service) executePostFinalizationTasks(ctx context.Context, finalizedState state.BeaconState) {

beacon-chain/blockchain/receive_block_test.go

@@ -17,7 +17,6 @@ import (
 	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
 	ethpbv1 "github.com/OffchainLabs/prysm/v7/proto/eth/v1"
@@ -131,10 +130,12 @@ func TestService_ReceiveBlock(t *testing.T) {
 				block: genFullBlock(t, util.DefaultBlockGenConfig(), 1 /*slot*/),
 			},
 			check: func(t *testing.T, s *Service) {
-				notifier := s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier)
-				require.Eventually(t, func() bool {
-					return len(notifier.ReceivedEvents()) >= 1
-				}, 2*time.Second, 10*time.Millisecond, "Expected at least 1 state notification")
+				// Hacky sleep, should use a better way to be able to resolve the race
+				// between event being sent out and processed.
+				time.Sleep(100 * time.Millisecond)
+				if recvd := len(s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier).ReceivedEvents()); recvd < 1 {
+					t.Errorf("Received %d state notifications, expected at least 1", recvd)
+				}
 			},
 		},
 		{
@@ -221,10 +222,10 @@ func TestService_ReceiveBlockUpdateHead(t *testing.T) {
 		require.NoError(t, s.ReceiveBlock(ctx, wsb, root, nil))
 	})
 	wg.Wait()
-	notifier := s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier)
-	require.Eventually(t, func() bool {
-		return len(notifier.ReceivedEvents()) >= 1
-	}, 2*time.Second, 10*time.Millisecond, "Expected at least 1 state notification")
+	time.Sleep(100 * time.Millisecond)
+	if recvd := len(s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier).ReceivedEvents()); recvd < 1 {
+		t.Errorf("Received %d state notifications, expected at least 1", recvd)
+	}
 	// Verify fork choice has processed the block. (Genesis block and the new block)
 	assert.Equal(t, 2, s.cfg.ForkChoiceStore.NodeCount())
 }
@@ -264,10 +265,10 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 				block: genFullBlock(t, util.DefaultBlockGenConfig(), 1 /*slot*/),
 			},
 			check: func(t *testing.T, s *Service) {
-				notifier := s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier)
-				require.Eventually(t, func() bool {
-					return len(notifier.ReceivedEvents()) >= 1
-				}, 2*time.Second, 10*time.Millisecond, "Expected at least 1 state notification")
+				time.Sleep(100 * time.Millisecond)
+				if recvd := len(s.cfg.StateNotifier.(*blockchainTesting.MockStateNotifier).ReceivedEvents()); recvd < 1 {
+					t.Errorf("Received %d state notifications, expected at least 1", recvd)
+				}
 			},
 		},
 	}
@@ -511,9 +512,8 @@ func Test_executePostFinalizationTasks(t *testing.T) {
 		s.cfg.StateNotifier = notifier
 		s.executePostFinalizationTasks(s.ctx, headState)
 
-		require.Eventually(t, func() bool {
-			return len(notifier.ReceivedEvents()) == 1
-		}, 5*time.Second, 50*time.Millisecond, "Expected exactly 1 state notification")
+		time.Sleep(1 * time.Second) // sleep for a second because event is in a separate go routine
+		require.Equal(t, 1, len(notifier.ReceivedEvents()))
 		e := notifier.ReceivedEvents()[0]
 		assert.Equal(t, statefeed.FinalizedCheckpoint, int(e.Type))
 		fc, ok := e.Data.(*ethpbv1.EventFinalizedCheckpoint)
@@ -552,9 +552,8 @@ func Test_executePostFinalizationTasks(t *testing.T) {
 		s.cfg.StateNotifier = notifier
 		s.executePostFinalizationTasks(s.ctx, headState)
 
-		require.Eventually(t, func() bool {
-			return len(notifier.ReceivedEvents()) == 1
-		}, 5*time.Second, 50*time.Millisecond, "Expected exactly 1 state notification")
+		time.Sleep(1 * time.Second) // sleep for a second because event is in a separate go routine
+		require.Equal(t, 1, len(notifier.ReceivedEvents()))
 		e := notifier.ReceivedEvents()[0]
 		assert.Equal(t, statefeed.FinalizedCheckpoint, int(e.Type))
 		fc, ok := e.Data.(*ethpbv1.EventFinalizedCheckpoint)
@@ -597,13 +596,13 @@ func TestProcessLightClientBootstrap(t *testing.T) {
 
 			s.executePostFinalizationTasks(s.ctx, l.AttestedState)
 
-			// Wait for the light client bootstrap to be saved (runs in goroutine)
-			var b interfaces.LightClientBootstrap
-			require.Eventually(t, func() bool {
-				var err error
-				b, err = s.lcStore.LightClientBootstrap(ctx, [32]byte(cp.Root))
-				return err == nil && b != nil
-			}, 5*time.Second, 50*time.Millisecond, "Light client bootstrap was not saved within timeout")
+			// wait for the goroutine to finish processing
+			time.Sleep(1 * time.Second)
+
+			// Check that the light client bootstrap is saved
+			b, err := s.lcStore.LightClientBootstrap(ctx, [32]byte(cp.Root))
+			require.NoError(t, err)
+			require.NotNil(t, b)
 
 			btst, err := lightClient.NewLightClientBootstrapFromBeaconState(ctx, l.FinalizedState.Slot(), l.FinalizedState, l.FinalizedBlock)
 			require.NoError(t, err)

beacon-chain/blockchain/service.go

@@ -14,6 +14,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/cache"
 	statefeed "github.com/OffchainLabs/prysm/v7/beacon-chain/core/feed/state"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/peerdas"
 	coreTime "github.com/OffchainLabs/prysm/v7/beacon-chain/core/time"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/transition"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/db"
@@ -29,6 +30,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/startup"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state/stategen"
+	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
@@ -289,6 +291,19 @@ func (s *Service) StartFromSavedState(saved state.BeaconState) error {
 		return errors.Wrap(err, "failed to initialize blockchain service")
 	}
 
+	if !params.FuluEnabled() {
+		return nil
+	}
+
+	earliestAvailableSlot, custodySubnetCount, err := s.updateCustodyInfoInDB(saved.Slot())
+	if err != nil {
+		return errors.Wrap(err, "could not get and save custody group count")
+	}
+
+	if _, _, err := s.cfg.P2P.UpdateCustodyInfo(earliestAvailableSlot, custodySubnetCount); err != nil {
+		return errors.Wrap(err, "update custody info")
+	}
+
 	return nil
 }
 
@@ -453,6 +468,73 @@ func (s *Service) removeStartupState() {
 	s.cfg.FinalizedStateAtStartUp = nil
 }
 
+// UpdateCustodyInfoInDB updates the custody information in the database.
+// It returns the (potentially updated) custody group count and the earliest available slot.
+func (s *Service) updateCustodyInfoInDB(slot primitives.Slot) (primitives.Slot, uint64, error) {
+	isSupernode := flags.Get().Supernode
+	isSemiSupernode := flags.Get().SemiSupernode
+
+	cfg := params.BeaconConfig()
+	custodyRequirement := cfg.CustodyRequirement
+
+	// Check if the node was previously subscribed to all data subnets, and if so,
+	// store the new status accordingly.
+	wasSupernode, err := s.cfg.BeaconDB.UpdateSubscribedToAllDataSubnets(s.ctx, isSupernode)
+	if err != nil {
+		return 0, 0, errors.Wrap(err, "update subscribed to all data subnets")
+	}
+
+	// Compute the target custody group count based on current flag configuration.
+	targetCustodyGroupCount := custodyRequirement
+
+	// Supernode: custody all groups (either currently set or previously enabled)
+	if isSupernode {
+		targetCustodyGroupCount = cfg.NumberOfCustodyGroups
+	}
+
+	// Semi-supernode: custody minimum needed for reconstruction, or custody requirement if higher
+	if isSemiSupernode {
+		semiSupernodeCustody, err := peerdas.MinimumCustodyGroupCountToReconstruct()
+		if err != nil {
+			return 0, 0, errors.Wrap(err, "minimum custody group count")
+		}
+
+		targetCustodyGroupCount = max(custodyRequirement, semiSupernodeCustody)
+	}
+
+	// Safely compute the fulu fork slot.
+	fuluForkSlot, err := fuluForkSlot()
+	if err != nil {
+		return 0, 0, errors.Wrap(err, "fulu fork slot")
+	}
+
+	// If slot is before the fulu fork slot, then use the earliest stored slot as the reference slot.
+	if slot < fuluForkSlot {
+		slot, err = s.cfg.BeaconDB.EarliestSlot(s.ctx)
+		if err != nil {
+			return 0, 0, errors.Wrap(err, "earliest slot")
+		}
+	}
+
+	earliestAvailableSlot, actualCustodyGroupCount, err := s.cfg.BeaconDB.UpdateCustodyInfo(s.ctx, slot, targetCustodyGroupCount)
+	if err != nil {
+		return 0, 0, errors.Wrap(err, "update custody info")
+	}
+
+	if isSupernode {
+		log.WithFields(logrus.Fields{
+			"current": actualCustodyGroupCount,
+			"target":  cfg.NumberOfCustodyGroups,
+		}).Info("Supernode mode enabled. Will custody all data columns going forward.")
+	}
+
+	if wasSupernode && !isSupernode {
+		log.Warningf("Because the `--%s` flag was previously used, the node will continue to act as a super node.", flags.Supernode.Name)
+	}
+
+	return earliestAvailableSlot, actualCustodyGroupCount, nil
+}
+
 func spawnCountdownIfPreGenesis(ctx context.Context, genesisTime time.Time, db db.HeadAccessDatabase) {
 	currentTime := prysmTime.Now()
 	if currentTime.After(genesisTime) {
@@ -469,3 +551,19 @@ func spawnCountdownIfPreGenesis(ctx context.Context, genesisTime time.Time, db d
 	}
 	go slots.CountdownToGenesis(ctx, genesisTime, uint64(gState.NumValidators()), gRoot)
 }
+
+func fuluForkSlot() (primitives.Slot, error) {
+	cfg := params.BeaconConfig()
+
+	fuluForkEpoch := cfg.FuluForkEpoch
+	if fuluForkEpoch == cfg.FarFutureEpoch {
+		return cfg.FarFutureSlot, nil
+	}
+
+	forkFuluSlot, err := slots.EpochStart(fuluForkEpoch)
+	if err != nil {
+		return 0, errors.Wrap(err, "epoch start")
+	}
+
+	return forkFuluSlot, nil
+}

beacon-chain/blockchain/service_test.go

@@ -23,9 +23,11 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/startup"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state/stategen"
+	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
 	"github.com/OffchainLabs/prysm/v7/config/features"
 	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/config/params"
+	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	consensusblocks "github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -594,3 +596,218 @@ func TestNotifyIndex(t *testing.T) {
 		t.Errorf("Notifier channel did not receive the index")
 	}
 }
+
+func TestUpdateCustodyInfoInDB(t *testing.T) {
+	const (
+		fuluForkEpoch         = 10
+		custodyRequirement    = uint64(4)
+		earliestStoredSlot    = primitives.Slot(12)
+		numberOfCustodyGroups = uint64(64)
+	)
+
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig()
+	cfg.FuluForkEpoch = fuluForkEpoch
+	cfg.CustodyRequirement = custodyRequirement
+	cfg.NumberOfCustodyGroups = numberOfCustodyGroups
+	params.OverrideBeaconConfig(cfg)
+
+	ctx := t.Context()
+	pbBlock := util.NewBeaconBlock()
+	pbBlock.Block.Slot = 12
+	signedBeaconBlock, err := blocks.NewSignedBeaconBlock(pbBlock)
+	require.NoError(t, err)
+
+	roBlock, err := blocks.NewROBlock(signedBeaconBlock)
+	require.NoError(t, err)
+
+	t.Run("CGC increases before fulu", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Before Fulu
+		// -----------
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(15)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, custodyRequirement, actualCgc)
+
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(17)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, custodyRequirement, actualCgc)
+
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.Supernode = true
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(19)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc)
+
+		// After Fulu
+		// ----------
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc)
+	})
+
+	t.Run("CGC increases after fulu", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Before Fulu
+		// -----------
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(15)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, custodyRequirement, actualCgc)
+
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(17)
+		require.NoError(t, err)
+		require.Equal(t, earliestStoredSlot, actualEas)
+		require.Equal(t, custodyRequirement, actualCgc)
+
+		// After Fulu
+		// ----------
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.Supernode = true
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		slot := fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(slot)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc)
+
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(slot + 2)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc)
+	})
+
+	t.Run("Supernode downgrade prevented", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Enable supernode
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.Supernode = true
+		flags.Init(gFlags)
+
+		slot := fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(slot)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc)
+
+		// Try to downgrade by removing flag
+		gFlags.Supernode = false
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		// Should still be supernode
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(slot + 2)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		require.Equal(t, numberOfCustodyGroups, actualCgc) // Still 64, not downgraded
+	})
+
+	t.Run("Semi-supernode downgrade prevented", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Enable semi-supernode
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.SemiSupernode = true
+		flags.Init(gFlags)
+
+		slot := fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(slot)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		semiSupernodeCustody := numberOfCustodyGroups / 2 // 64
+		require.Equal(t, semiSupernodeCustody, actualCgc) // Semi-supernode custodies 64 groups
+
+		// Try to downgrade by removing flag
+		gFlags.SemiSupernode = false
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		// UpdateCustodyInfo should prevent downgrade - custody count should remain at 64
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(slot + 2)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		require.Equal(t, semiSupernodeCustody, actualCgc) // Still 64 due to downgrade prevention by UpdateCustodyInfo
+	})
+
+	t.Run("Semi-supernode to supernode upgrade allowed", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Start with semi-supernode
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.SemiSupernode = true
+		flags.Init(gFlags)
+
+		slot := fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(slot)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		semiSupernodeCustody := numberOfCustodyGroups / 2 // 64
+		require.Equal(t, semiSupernodeCustody, actualCgc) // Semi-supernode custodies 64 groups
+
+		// Upgrade to full supernode
+		gFlags.SemiSupernode = false
+		gFlags.Supernode = true
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		// Should upgrade to full supernode
+		upgradeSlot := slot + 2
+		actualEas, actualCgc, err = service.updateCustodyInfoInDB(upgradeSlot)
+		require.NoError(t, err)
+		require.Equal(t, upgradeSlot, actualEas)           // Earliest slot updates when upgrading
+		require.Equal(t, numberOfCustodyGroups, actualCgc) // Upgraded to 128
+	})
+
+	t.Run("Semi-supernode with high validator requirements uses higher custody", func(t *testing.T) {
+		service, requirements := minimalTestService(t)
+		err = requirements.db.SaveBlock(ctx, roBlock)
+		require.NoError(t, err)
+
+		// Enable semi-supernode
+		resetFlags := flags.Get()
+		gFlags := new(flags.GlobalFlags)
+		gFlags.SemiSupernode = true
+		flags.Init(gFlags)
+		defer flags.Init(resetFlags)
+
+		// Mock a high custody requirement (simulating many validators)
+		// We need to override the custody requirement calculation
+		// For this test, we'll verify the logic by checking if custodyRequirement > 64
+		// Since custodyRequirement in minimalTestService is 4, we can't test the high case here
+		// This would require a different test setup with actual validators
+		slot := fuluForkEpoch*primitives.Slot(cfg.SlotsPerEpoch) + 1
+		actualEas, actualCgc, err := service.updateCustodyInfoInDB(slot)
+		require.NoError(t, err)
+		require.Equal(t, slot, actualEas)
+		semiSupernodeCustody := numberOfCustodyGroups / 2 // 64
+		// With low validator requirements (4), should use semi-supernode minimum (64)
+		require.Equal(t, semiSupernodeCustody, actualCgc)
+	})
+}

beacon-chain/core/altair/deposit.go

@@ -3,6 +3,7 @@ package altair
 import (
 	"context"
 
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/config/params"
@@ -23,7 +24,7 @@ func ProcessPreGenesisDeposits(
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process deposit")
 	}
-	beaconState, err = helpers.ActivateValidatorWithEffectiveBalance(beaconState, deposits)
+	beaconState, err = blocks.ActivateValidatorWithEffectiveBalance(beaconState, deposits)
 	if err != nil {
 		return nil, err
 	}
@@ -36,7 +37,7 @@ func ProcessDeposits(
 	beaconState state.BeaconState,
 	deposits []*ethpb.Deposit,
 ) (state.BeaconState, error) {
-	allSignaturesVerified, err := helpers.BatchVerifyDepositsSignatures(ctx, deposits)
+	allSignaturesVerified, err := blocks.BatchVerifyDepositsSignatures(ctx, deposits)
 	if err != nil {
 		return nil, err
 	}
@@ -81,7 +82,7 @@ func ProcessDeposits(
 //	  signature=deposit.data.signature,
 //	 )
 func ProcessDeposit(beaconState state.BeaconState, deposit *ethpb.Deposit, allSignaturesVerified bool) (state.BeaconState, error) {
-	if err := helpers.VerifyDeposit(beaconState, deposit); err != nil {
+	if err := blocks.VerifyDeposit(beaconState, deposit); err != nil {
 		if deposit == nil || deposit.Data == nil {
 			return nil, err
 		}
@@ -121,7 +122,7 @@ func ApplyDeposit(beaconState state.BeaconState, data *ethpb.Deposit_Data, allSi
 	index, ok := beaconState.ValidatorIndexByPubkey(bytesutil.ToBytes48(pubKey))
 	if !ok {
 		if !allSignaturesVerified {
-			valid, err := helpers.IsValidDepositSignature(data)
+			valid, err := blocks.IsValidDepositSignature(data)
 			if err != nil {
 				return nil, err
 			}

beacon-chain/core/blocks/BUILD.bazel

@@ -5,6 +5,7 @@ go_library(
     srcs = [
         "attestation.go",
         "attester_slashing.go",
+        "deposit.go",
         "error.go",
         "eth1_data.go",
         "exit.go",
@@ -20,7 +21,6 @@ go_library(
     importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks",
     visibility = ["//visibility:public"],
     deps = [
-        "//beacon-chain/core/gloas:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
@@ -33,6 +33,8 @@ go_library(
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
+        "//container/trie:go_default_library",
+        "//contracts/deposit:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
@@ -59,6 +61,7 @@ go_test(
         "attester_slashing_test.go",
         "block_operations_fuzz_test.go",
         "block_regression_test.go",
+        "deposit_test.go",
         "eth1_data_test.go",
         "exit_test.go",
         "exports_test.go",
@@ -87,6 +90,7 @@ go_test(
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//container/trie:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/bls/common:go_default_library",
         "//crypto/hash:go_default_library",

beacon-chain/core/blocks/block_operations_fuzz_test.go

@@ -3,7 +3,6 @@ package blocks
 import (
 	"testing"
 
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	v "github.com/OffchainLabs/prysm/v7/beacon-chain/core/validators"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
@@ -319,7 +318,7 @@ func TestFuzzverifyDeposit_10000(t *testing.T) {
 		fuzzer.Fuzz(deposit)
 		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
 		require.NoError(t, err)
-		err = helpers.VerifyDeposit(s, deposit)
+		err = VerifyDeposit(s, deposit)
 		_ = err
 		fuzz.FreeMemory(i)
 	}

beacon-chain/core/blocks/deposit.go

@@ -1,4 +1,4 @@
-package helpers
+package blocks
 
 import (
 	"context"

beacon-chain/core/blocks/deposit_test.go

@@ -1,9 +1,9 @@
-package helpers_test
+package blocks_test
 
 import (
 	"testing"
 
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
@@ -45,7 +45,7 @@ func TestBatchVerifyDepositsSignatures_Ok(t *testing.T) {
 
 	deposit.Proof = proof
 	require.NoError(t, err)
-	verified, err := helpers.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
+	verified, err := blocks.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
 	require.NoError(t, err)
 	require.Equal(t, true, verified)
 }
@@ -68,7 +68,7 @@ func TestBatchVerifyDepositsSignatures_InvalidSignature(t *testing.T) {
 
 	deposit.Proof = proof
 	require.NoError(t, err)
-	verified, err := helpers.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
+	verified, err := blocks.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
 	require.NoError(t, err)
 	require.Equal(t, false, verified)
 }
@@ -99,7 +99,7 @@ func TestVerifyDeposit_MerkleBranchFailsVerification(t *testing.T) {
 	})
 	require.NoError(t, err)
 	want := "deposit root did not verify"
-	err = helpers.VerifyDeposit(beaconState, deposit)
+	err = blocks.VerifyDeposit(beaconState, deposit)
 	require.ErrorContains(t, want, err)
 }
 
@@ -123,7 +123,7 @@ func TestIsValidDepositSignature_Ok(t *testing.T) {
 	require.NoError(t, err)
 	sig := sk.Sign(sr[:])
 	depositData.Signature = sig.Marshal()
-	valid, err := helpers.IsValidDepositSignature(depositData)
+	valid, err := blocks.IsValidDepositSignature(depositData)
 	require.NoError(t, err)
 	require.Equal(t, true, valid)
 }
@@ -163,7 +163,7 @@ func TestBatchVerifyPendingDepositsSignatures_Ok(t *testing.T) {
 	sig2 := sk2.Sign(sr2[:])
 	pendingDeposit2.Signature = sig2.Marshal()
 
-	verified, err := helpers.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit, pendingDeposit2})
+	verified, err := blocks.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit, pendingDeposit2})
 	require.NoError(t, err)
 	require.Equal(t, true, verified)
 }
@@ -174,7 +174,7 @@ func TestBatchVerifyPendingDepositsSignatures_InvalidSignature(t *testing.T) {
 		WithdrawalCredentials: make([]byte, 32),
 		Signature:             make([]byte, 96),
 	}
-	verified, err := helpers.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit})
+	verified, err := blocks.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit})
 	require.NoError(t, err)
 	require.Equal(t, false, verified)
 }

beacon-chain/core/blocks/proposer_slashing.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/gloas"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/time"
@@ -12,7 +11,6 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/runtime/version"
 	"github.com/OffchainLabs/prysm/v7/time/slots"
 	"github.com/pkg/errors"
 	"google.golang.org/protobuf/proto"
@@ -128,16 +126,7 @@ func processProposerSlashing(
 	if exitInfo == nil {
 		return nil, errors.New("exit info is required to process proposer slashing")
 	}
-
 	var err error
-	// [New in Gloas:EIP7732]: remove the BuilderPendingPayment corresponding to the slashed proposer within 2 epoch window
-	if beaconState.Version() >= version.Gloas {
-		err = gloas.RemoveBuilderPendingPayment(beaconState, slashing.Header_1.Header)
-		if err != nil {
-			return nil, err
-		}
-	}
-
 	beaconState, err = validators.SlashValidator(ctx, beaconState, slashing.Header_1.Header.ProposerIndex, exitInfo)
 	if err != nil {
 		return nil, errors.Wrapf(err, "could not slash proposer index %d", slashing.Header_1.Header.ProposerIndex)

beacon-chain/core/electra/BUILD.bazel

@@ -12,13 +12,16 @@ go_library(
         "log.go",
         "registry_updates.go",
         "transition.go",
+        "transition_no_verify_sig.go",
         "upgrade.go",
         "validator.go",
+        "withdrawals.go",
     ],
     importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra",
     visibility = ["//visibility:public"],
     deps = [
         "//beacon-chain/core/altair:go_default_library",
+        "//beacon-chain/core/blocks:go_default_library",
         "//beacon-chain/core/epoch:go_default_library",
         "//beacon-chain/core/epoch/precompute:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
@@ -41,6 +44,8 @@ go_library(
         "//proto/prysm/v1alpha1/attestation:go_default_library",
         "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/math:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
     ],
@@ -57,14 +62,17 @@ go_test(
         "error_test.go",
         "export_test.go",
         "registry_updates_test.go",
+        "transition_no_verify_sig_test.go",
         "transition_test.go",
         "upgrade_test.go",
         "validator_test.go",
+        "withdrawals_test.go",
     ],
     data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     deps = [
         "//beacon-chain/core/helpers:go_default_library",
+        "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/state-native:go_default_library",
@@ -77,12 +85,16 @@ go_test(
         "//encoding/bytesutil:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
+        "//testing/assert:go_default_library",
         "//testing/fuzz:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
     ],
 )

beacon-chain/core/electra/consolidations.go

@@ -3,14 +3,19 @@ package electra
 import (
 	"bytes"
 	"context"
+	"fmt"
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
+	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	"github.com/OffchainLabs/prysm/v7/config/params"
+	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
 	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
 	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
+	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/time/slots"
+	"github.com/ethereum/go-ethereum/common/math"
 	"github.com/pkg/errors"
 )
 
@@ -90,6 +95,217 @@ func ProcessPendingConsolidations(ctx context.Context, st state.BeaconState) err
 	return nil
 }
 
+// ProcessConsolidationRequests implements the spec definition below. This method makes mutating
+// calls to the beacon state.
+//
+//	def process_consolidation_request(
+//	    state: BeaconState,
+//	    consolidation_request: ConsolidationRequest
+//	) -> None:
+//	    if is_valid_switch_to_compounding_request(state, consolidation_request):
+//	        validator_pubkeys = [v.pubkey for v in state.validators]
+//	        request_source_pubkey = consolidation_request.source_pubkey
+//	        source_index = ValidatorIndex(validator_pubkeys.index(request_source_pubkey))
+//	        switch_to_compounding_validator(state, source_index)
+//	        return
+//
+//	    # Verify that source != target, so a consolidation cannot be used as an exit.
+//	    if consolidation_request.source_pubkey == consolidation_request.target_pubkey:
+//	        return
+//	    # If the pending consolidations queue is full, consolidation requests are ignored
+//	    if len(state.pending_consolidations) == PENDING_CONSOLIDATIONS_LIMIT:
+//	        return
+//	    # If there is too little available consolidation churn limit, consolidation requests are ignored
+//	    if get_consolidation_churn_limit(state) <= MIN_ACTIVATION_BALANCE:
+//	        return
+//
+//	    validator_pubkeys = [v.pubkey for v in state.validators]
+//	    # Verify pubkeys exists
+//	    request_source_pubkey = consolidation_request.source_pubkey
+//	    request_target_pubkey = consolidation_request.target_pubkey
+//	    if request_source_pubkey not in validator_pubkeys:
+//	        return
+//	    if request_target_pubkey not in validator_pubkeys:
+//	        return
+//	    source_index = ValidatorIndex(validator_pubkeys.index(request_source_pubkey))
+//	    target_index = ValidatorIndex(validator_pubkeys.index(request_target_pubkey))
+//	    source_validator = state.validators[source_index]
+//	    target_validator = state.validators[target_index]
+//
+//	    # Verify source withdrawal credentials
+//	    has_correct_credential = has_execution_withdrawal_credential(source_validator)
+//	    is_correct_source_address = (
+//	        source_validator.withdrawal_credentials[12:] == consolidation_request.source_address
+//	    )
+//	    if not (has_correct_credential and is_correct_source_address):
+//	        return
+//
+//	    # Verify that target has compounding withdrawal credentials
+//	    if not has_compounding_withdrawal_credential(target_validator):
+//	        return
+//
+//	    # Verify the source and the target are active
+//	    current_epoch = get_current_epoch(state)
+//	    if not is_active_validator(source_validator, current_epoch):
+//	        return
+//	    if not is_active_validator(target_validator, current_epoch):
+//	        return
+//	    # Verify exits for source and target have not been initiated
+//	    if source_validator.exit_epoch != FAR_FUTURE_EPOCH:
+//	        return
+//	    if target_validator.exit_epoch != FAR_FUTURE_EPOCH:
+//	        return
+//
+//	    # Verify the source has been active long enough
+//	    if current_epoch < source_validator.activation_epoch + SHARD_COMMITTEE_PERIOD:
+//	        return
+//
+//	    # Verify the source has no pending withdrawals in the queue
+//	    if get_pending_balance_to_withdraw(state, source_index) > 0:
+//	        return
+//	    # Initiate source validator exit and append pending consolidation
+//	    source_validator.exit_epoch = compute_consolidation_epoch_and_update_churn(
+//	        state, source_validator.effective_balance
+//	    )
+//	    source_validator.withdrawable_epoch = Epoch(
+//	        source_validator.exit_epoch + MIN_VALIDATOR_WITHDRAWABILITY_DELAY
+//	    )
+//	    state.pending_consolidations.append(PendingConsolidation(
+//	        source_index=source_index,
+//	        target_index=target_index
+//	    ))
+func ProcessConsolidationRequests(ctx context.Context, st state.BeaconState, reqs []*enginev1.ConsolidationRequest) error {
+	if len(reqs) == 0 || st == nil {
+		return nil
+	}
+	curEpoch := slots.ToEpoch(st.Slot())
+	ffe := params.BeaconConfig().FarFutureEpoch
+	minValWithdrawDelay := params.BeaconConfig().MinValidatorWithdrawabilityDelay
+	pcLimit := params.BeaconConfig().PendingConsolidationsLimit
+
+	for _, cr := range reqs {
+		if cr == nil {
+			return errors.New("nil consolidation request")
+		}
+		if ctx.Err() != nil {
+			return fmt.Errorf("cannot process consolidation requests: %w", ctx.Err())
+		}
+		if IsValidSwitchToCompoundingRequest(st, cr) {
+			srcIdx, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(cr.SourcePubkey))
+			if !ok {
+				log.Error("Failed to find source validator index")
+				continue
+			}
+			if err := SwitchToCompoundingValidator(st, srcIdx); err != nil {
+				log.WithError(err).Error("Failed to switch to compounding validator")
+			}
+			continue
+		}
+		sourcePubkey := bytesutil.ToBytes48(cr.SourcePubkey)
+		targetPubkey := bytesutil.ToBytes48(cr.TargetPubkey)
+		if sourcePubkey == targetPubkey {
+			continue
+		}
+
+		if npc, err := st.NumPendingConsolidations(); err != nil {
+			return fmt.Errorf("failed to fetch number of pending consolidations: %w", err) // This should never happen.
+		} else if npc >= pcLimit {
+			continue
+		}
+
+		activeBal, err := helpers.TotalActiveBalance(st)
+		if err != nil {
+			return err
+		}
+		churnLimit := helpers.ConsolidationChurnLimit(primitives.Gwei(activeBal))
+		if churnLimit <= primitives.Gwei(params.BeaconConfig().MinActivationBalance) {
+			continue
+		}
+
+		srcIdx, ok := st.ValidatorIndexByPubkey(sourcePubkey)
+		if !ok {
+			continue
+		}
+		tgtIdx, ok := st.ValidatorIndexByPubkey(targetPubkey)
+		if !ok {
+			continue
+		}
+
+		srcV, err := st.ValidatorAtIndex(srcIdx)
+		if err != nil {
+			return fmt.Errorf("failed to fetch source validator: %w", err) // This should never happen.
+		}
+
+		roSrcV, err := state_native.NewValidator(srcV)
+		if err != nil {
+			return err
+		}
+
+		tgtV, err := st.ValidatorAtIndexReadOnly(tgtIdx)
+		if err != nil {
+			return fmt.Errorf("failed to fetch target validator: %w", err) // This should never happen.
+		}
+
+		// Verify source withdrawal credentials
+		if !roSrcV.HasExecutionWithdrawalCredentials() {
+			continue
+		}
+		// Confirm source_validator.withdrawal_credentials[12:] == consolidation_request.source_address
+		if len(srcV.WithdrawalCredentials) != 32 || len(cr.SourceAddress) != 20 || !bytes.HasSuffix(srcV.WithdrawalCredentials, cr.SourceAddress) {
+			continue
+		}
+
+		// Target validator must have their withdrawal credentials set appropriately.
+		if !tgtV.HasCompoundingWithdrawalCredentials() {
+			continue
+		}
+
+		// Both validators must be active.
+		if !helpers.IsActiveValidator(srcV, curEpoch) || !helpers.IsActiveValidatorUsingTrie(tgtV, curEpoch) {
+			continue
+		}
+		// Neither validator is exiting.
+		if srcV.ExitEpoch != ffe || tgtV.ExitEpoch() != ffe {
+			continue
+		}
+
+		e, overflow := math.SafeAdd(uint64(srcV.ActivationEpoch), uint64(params.BeaconConfig().ShardCommitteePeriod))
+		if overflow {
+			log.Error("Overflow when adding activation epoch and shard committee period")
+			continue
+		}
+		if uint64(curEpoch) < e {
+			continue
+		}
+		hasBal, err := st.HasPendingBalanceToWithdraw(srcIdx)
+		if err != nil {
+			log.WithError(err).Error("Failed to fetch pending balance to withdraw")
+			continue
+		}
+		if hasBal {
+			continue
+		}
+
+		// Initiate the exit of the source validator.
+		exitEpoch, err := ComputeConsolidationEpochAndUpdateChurn(ctx, st, primitives.Gwei(srcV.EffectiveBalance))
+		if err != nil {
+			log.WithError(err).Error("Failed to compute consolidation epoch")
+			continue
+		}
+		srcV.ExitEpoch = exitEpoch
+		srcV.WithdrawableEpoch = exitEpoch + minValWithdrawDelay
+		if err := st.UpdateValidatorAtIndex(srcIdx, srcV); err != nil {
+			return fmt.Errorf("failed to update validator: %w", err) // This should never happen.
+		}
+
+		if err := st.AppendPendingConsolidation(&eth.PendingConsolidation{SourceIndex: srcIdx, TargetIndex: tgtIdx}); err != nil {
+			return fmt.Errorf("failed to append pending consolidation: %w", err) // This should never happen.
+		}
+	}
+
+	return nil
+}
+
 // IsValidSwitchToCompoundingRequest returns true if the given consolidation request is valid for switching to compounding.
 //
 // Spec code:

beacon-chain/core/electra/consolidations_test.go

@@ -8,6 +8,8 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	"github.com/OffchainLabs/prysm/v7/config/params"
+	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
+	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
 	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
 	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/testing/require"
@@ -201,6 +203,275 @@ func TestProcessPendingConsolidations(t *testing.T) {
 	}
 }
 
+func TestProcessConsolidationRequests(t *testing.T) {
+	tests := []struct {
+		name     string
+		state    state.BeaconState
+		reqs     []*enginev1.ConsolidationRequest
+		validate func(*testing.T, state.BeaconState)
+		wantErr  bool
+	}{
+		{
+			name: "nil request",
+			state: func() state.BeaconState {
+				st := &eth.BeaconStateElectra{}
+				s, err := state_native.InitializeFromProtoElectra(st)
+				require.NoError(t, err)
+				return s
+			}(),
+			reqs: []*enginev1.ConsolidationRequest{nil},
+			validate: func(t *testing.T, st state.BeaconState) {
+				require.DeepEqual(t, st, st)
+			},
+			wantErr: true,
+		},
+		{
+			name: "one valid request",
+			state: func() state.BeaconState {
+				st := &eth.BeaconStateElectra{
+					Slot:       params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
+					Validators: createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
+				}
+				// Validator scenario setup. See comments in reqs section.
+				st.Validators[3].WithdrawalCredentials = bytesutil.Bytes32(0)
+				st.Validators[8].WithdrawalCredentials = bytesutil.Bytes32(1)
+				st.Validators[9].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
+				st.Validators[12].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
+				st.Validators[13].ExitEpoch = 10
+				st.Validators[16].ExitEpoch = 10
+				st.PendingPartialWithdrawals = []*eth.PendingPartialWithdrawal{
+					{
+						Index:  17,
+						Amount: 100,
+					},
+				}
+				s, err := state_native.InitializeFromProtoElectra(st)
+				require.NoError(t, err)
+				return s
+			}(),
+			reqs: []*enginev1.ConsolidationRequest{
+				// Source doesn't have withdrawal credentials.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
+					SourcePubkey:  []byte("val_3"),
+					TargetPubkey:  []byte("val_4"),
+				},
+				// Source withdrawal credentials don't match the consolidation address.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)), // Should be 5
+					SourcePubkey:  []byte("val_5"),
+					TargetPubkey:  []byte("val_6"),
+				},
+				// Target does not have their withdrawal credentials set appropriately. (Using eth1 address prefix)
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(7)),
+					SourcePubkey:  []byte("val_7"),
+					TargetPubkey:  []byte("val_8"),
+				},
+				// Source is inactive.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(9)),
+					SourcePubkey:  []byte("val_9"),
+					TargetPubkey:  []byte("val_10"),
+				},
+				// Target is inactive.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(11)),
+					SourcePubkey:  []byte("val_11"),
+					TargetPubkey:  []byte("val_12"),
+				},
+				// Source is exiting.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(13)),
+					SourcePubkey:  []byte("val_13"),
+					TargetPubkey:  []byte("val_14"),
+				},
+				// Target is exiting.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(15)),
+					SourcePubkey:  []byte("val_15"),
+					TargetPubkey:  []byte("val_16"),
+				},
+				// Source doesn't exist
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
+					SourcePubkey:  []byte("INVALID"),
+					TargetPubkey:  []byte("val_0"),
+				},
+				// Target doesn't exist
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
+					SourcePubkey:  []byte("val_0"),
+					TargetPubkey:  []byte("INVALID"),
+				},
+				// Source == target
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
+					SourcePubkey:  []byte("val_0"),
+					TargetPubkey:  []byte("val_0"),
+				},
+				// Has pending partial withdrawal
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
+					SourcePubkey:  []byte("val_17"),
+					TargetPubkey:  []byte("val_1"),
+				},
+				// Valid consolidation request. This should be last to ensure invalid requests do
+				// not end the processing early.
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
+					SourcePubkey:  []byte("val_1"),
+					TargetPubkey:  []byte("val_2"),
+				},
+			},
+			validate: func(t *testing.T, st state.BeaconState) {
+				// Verify a pending consolidation is created.
+				numPC, err := st.NumPendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, uint64(1), numPC)
+				pcs, err := st.PendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, primitives.ValidatorIndex(1), pcs[0].SourceIndex)
+				require.Equal(t, primitives.ValidatorIndex(2), pcs[0].TargetIndex)
+
+				// Verify the source validator is exiting.
+				src, err := st.ValidatorAtIndex(1)
+				require.NoError(t, err)
+				require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch not updated")
+				require.Equal(t, params.BeaconConfig().MinValidatorWithdrawabilityDelay, src.WithdrawableEpoch-src.ExitEpoch, "source validator withdrawable epoch not set correctly")
+			},
+		},
+		{
+			name: "pending consolidations limit reached",
+			state: func() state.BeaconState {
+				st := &eth.BeaconStateElectra{
+					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
+					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit),
+				}
+				s, err := state_native.InitializeFromProtoElectra(st)
+				require.NoError(t, err)
+				return s
+			}(),
+			reqs: []*enginev1.ConsolidationRequest{
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
+					SourcePubkey:  []byte("val_1"),
+					TargetPubkey:  []byte("val_2"),
+				},
+			},
+			validate: func(t *testing.T, st state.BeaconState) {
+				// Verify no pending consolidation is created.
+				numPC, err := st.NumPendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
+
+				// Verify the source validator is not exiting.
+				src, err := st.ValidatorAtIndex(1)
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch should not be updated")
+				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.WithdrawableEpoch, "source validator withdrawable epoch should not be updated")
+			},
+		},
+		{
+			name: "pending consolidations limit reached during processing",
+			state: func() state.BeaconState {
+				st := &eth.BeaconStateElectra{
+					Slot:                  params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
+					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
+					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit-1),
+				}
+				s, err := state_native.InitializeFromProtoElectra(st)
+				require.NoError(t, err)
+				return s
+			}(),
+			reqs: []*enginev1.ConsolidationRequest{
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
+					SourcePubkey:  []byte("val_1"),
+					TargetPubkey:  []byte("val_2"),
+				},
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(3)),
+					SourcePubkey:  []byte("val_3"),
+					TargetPubkey:  []byte("val_4"),
+				},
+			},
+			validate: func(t *testing.T, st state.BeaconState) {
+				// Verify a pending consolidation is created.
+				numPC, err := st.NumPendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
+
+				// The first consolidation was appended.
+				pcs, err := st.PendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, primitives.ValidatorIndex(1), pcs[params.BeaconConfig().PendingConsolidationsLimit-1].SourceIndex)
+				require.Equal(t, primitives.ValidatorIndex(2), pcs[params.BeaconConfig().PendingConsolidationsLimit-1].TargetIndex)
+
+				// Verify the second source validator is not exiting.
+				src, err := st.ValidatorAtIndex(3)
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch should not be updated")
+				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.WithdrawableEpoch, "source validator withdrawable epoch should not be updated")
+			},
+		},
+		{
+			name: "pending consolidations limit reached and compounded consolidation after",
+			state: func() state.BeaconState {
+				st := &eth.BeaconStateElectra{
+					Slot:                  params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
+					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
+					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit),
+				}
+				// To allow compounding consolidation requests.
+				st.Validators[3].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+				s, err := state_native.InitializeFromProtoElectra(st)
+				require.NoError(t, err)
+				return s
+			}(),
+			reqs: []*enginev1.ConsolidationRequest{
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
+					SourcePubkey:  []byte("val_1"),
+					TargetPubkey:  []byte("val_2"),
+				},
+				{
+					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(3)),
+					SourcePubkey:  []byte("val_3"),
+					TargetPubkey:  []byte("val_3"),
+				},
+			},
+			validate: func(t *testing.T, st state.BeaconState) {
+				// Verify a pending consolidation is created.
+				numPC, err := st.NumPendingConsolidations()
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
+
+				// Verify that the last consolidation was included
+				src, err := st.ValidatorAtIndex(3)
+				require.NoError(t, err)
+				require.Equal(t, params.BeaconConfig().CompoundingWithdrawalPrefixByte, src.WithdrawalCredentials[0], "source validator was not compounded")
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := electra.ProcessConsolidationRequests(context.TODO(), tt.state, tt.reqs)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("ProcessWithdrawalRequests() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !tt.wantErr {
+				require.NoError(t, err)
+			}
+			if tt.validate != nil {
+				tt.validate(t, tt.state)
+			}
+		})
+	}
+}
+
 func TestIsValidSwitchToCompoundingRequest(t *testing.T) {
 	st, _ := util.DeterministicGenesisStateElectra(t, 1)
 	t.Run("nil source pubkey", func(t *testing.T) {

beacon-chain/core/electra/deposits.go

@@ -3,6 +3,7 @@ package electra
 import (
 	"context"
 
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
@@ -12,6 +13,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/contracts/deposit"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
 	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
+	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
 	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/runtime/version"
 	"github.com/OffchainLabs/prysm/v7/time/slots"
@@ -35,7 +37,7 @@ func ProcessDeposits(
 	defer span.End()
 	// Attempt to verify all deposit signatures at once, if this fails then fall back to processing
 	// individual deposits with signature verification enabled.
-	allSignaturesVerified, err := helpers.BatchVerifyDepositsSignatures(ctx, deposits)
+	allSignaturesVerified, err := blocks.BatchVerifyDepositsSignatures(ctx, deposits)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not verify deposit signatures in batch")
 	}
@@ -80,7 +82,7 @@ func ProcessDeposits(
 //	  signature=deposit.data.signature,
 //	 )
 func ProcessDeposit(beaconState state.BeaconState, deposit *ethpb.Deposit, allSignaturesVerified bool) (state.BeaconState, error) {
-	if err := helpers.VerifyDeposit(beaconState, deposit); err != nil {
+	if err := blocks.VerifyDeposit(beaconState, deposit); err != nil {
 		if deposit == nil || deposit.Data == nil {
 			return nil, err
 		}
@@ -375,7 +377,7 @@ func batchProcessNewPendingDeposits(ctx context.Context, state state.BeaconState
 		return nil
 	}
 
-	allSignaturesVerified, err := helpers.BatchVerifyPendingDepositsSignatures(ctx, pendingDeposits)
+	allSignaturesVerified, err := blocks.BatchVerifyPendingDepositsSignatures(ctx, pendingDeposits)
 	if err != nil {
 		return errors.Wrap(err, "batch signature verification failed")
 	}
@@ -384,7 +386,7 @@ func batchProcessNewPendingDeposits(ctx context.Context, state state.BeaconState
 		validSig := allSignaturesVerified
 
 		if !allSignaturesVerified {
-			validSig, err = helpers.IsValidDepositSignature(&ethpb.Deposit_Data{
+			validSig, err = blocks.IsValidDepositSignature(&ethpb.Deposit_Data{
 				PublicKey:             bytesutil.SafeCopyBytes(pd.PublicKey),
 				WithdrawalCredentials: bytesutil.SafeCopyBytes(pd.WithdrawalCredentials),
 				Amount:                pd.Amount,
@@ -439,7 +441,7 @@ func ApplyPendingDeposit(ctx context.Context, st state.BeaconState, deposit *eth
 	defer span.End()
 	index, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(deposit.PublicKey))
 	if !ok {
-		verified, err := helpers.IsValidDepositSignature(&ethpb.Deposit_Data{
+		verified, err := blocks.IsValidDepositSignature(&ethpb.Deposit_Data{
 			PublicKey:             bytesutil.SafeCopyBytes(deposit.PublicKey),
 			WithdrawalCredentials: bytesutil.SafeCopyBytes(deposit.WithdrawalCredentials),
 			Amount:                deposit.Amount,
@@ -535,3 +537,62 @@ func GetValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte, amount
 	validator.EffectiveBalance = min(amount-(amount%params.BeaconConfig().EffectiveBalanceIncrement), maxEffectiveBalance)
 	return validator, nil
 }
+
+// ProcessDepositRequests is a function as part of electra to process execution layer deposits
+func ProcessDepositRequests(ctx context.Context, beaconState state.BeaconState, requests []*enginev1.DepositRequest) (state.BeaconState, error) {
+	_, span := trace.StartSpan(ctx, "electra.ProcessDepositRequests")
+	defer span.End()
+
+	if len(requests) == 0 {
+		return beaconState, nil
+	}
+
+	var err error
+	for _, receipt := range requests {
+		beaconState, err = processDepositRequest(beaconState, receipt)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not apply deposit request")
+		}
+	}
+	return beaconState, nil
+}
+
+// processDepositRequest processes the specific deposit request
+// def process_deposit_request(state: BeaconState, deposit_request: DepositRequest) -> None:
+//
+//	# Set deposit request start index
+//	if state.deposit_requests_start_index == UNSET_DEPOSIT_REQUESTS_START_INDEX:
+//	    state.deposit_requests_start_index = deposit_request.index
+//
+//	# Create pending deposit
+//	state.pending_deposits.append(PendingDeposit(
+//	    pubkey=deposit_request.pubkey,
+//	    withdrawal_credentials=deposit_request.withdrawal_credentials,
+//	    amount=deposit_request.amount,
+//	    signature=deposit_request.signature,
+//	    slot=state.slot,
+//	))
+func processDepositRequest(beaconState state.BeaconState, request *enginev1.DepositRequest) (state.BeaconState, error) {
+	requestsStartIndex, err := beaconState.DepositRequestsStartIndex()
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get deposit requests start index")
+	}
+	if request == nil {
+		return nil, errors.New("nil deposit request")
+	}
+	if requestsStartIndex == params.BeaconConfig().UnsetDepositRequestsStartIndex {
+		if err := beaconState.SetDepositRequestsStartIndex(request.Index); err != nil {
+			return nil, errors.Wrap(err, "could not set deposit requests start index")
+		}
+	}
+	if err := beaconState.AppendPendingDeposit(&ethpb.PendingDeposit{
+		PublicKey:             bytesutil.SafeCopyBytes(request.Pubkey),
+		WithdrawalCredentials: bytesutil.SafeCopyBytes(request.WithdrawalCredentials),
+		Amount:                request.Amount,
+		Signature:             bytesutil.SafeCopyBytes(request.Signature),
+		Slot:                  beaconState.Slot(),
+	}); err != nil {
+		return nil, errors.Wrap(err, "could not append deposit request")
+	}
+	return beaconState, nil
+}

beacon-chain/core/electra/deposits_test.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	stateTesting "github.com/OffchainLabs/prysm/v7/beacon-chain/state/testing"
@@ -14,6 +15,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/crypto/bls"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
+	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
 	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/testing/require"
 	"github.com/OffchainLabs/prysm/v7/testing/util"
@@ -359,6 +361,60 @@ func TestBatchProcessNewPendingDeposits(t *testing.T) {
 	})
 }
 
+func TestProcessDepositRequests(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, 1)
+	sk, err := bls.RandKey()
+	require.NoError(t, err)
+	require.NoError(t, st.SetDepositRequestsStartIndex(1))
+
+	t.Run("empty requests continues", func(t *testing.T) {
+		newSt, err := electra.ProcessDepositRequests(t.Context(), st, []*enginev1.DepositRequest{})
+		require.NoError(t, err)
+		require.DeepEqual(t, newSt, st)
+	})
+	t.Run("nil request errors", func(t *testing.T) {
+		_, err = electra.ProcessDepositRequests(t.Context(), st, []*enginev1.DepositRequest{nil})
+		require.ErrorContains(t, "nil deposit request", err)
+	})
+
+	vals := st.Validators()
+	vals[0].PublicKey = sk.PublicKey().Marshal()
+	vals[0].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+	require.NoError(t, st.SetValidators(vals))
+	bals := st.Balances()
+	bals[0] = params.BeaconConfig().MinActivationBalance + 2000
+	require.NoError(t, st.SetBalances(bals))
+	require.NoError(t, st.SetPendingDeposits(make([]*eth.PendingDeposit, 0))) // reset pbd as the determinitstic state populates this already
+	withdrawalCred := make([]byte, 32)
+	withdrawalCred[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
+	depositMessage := &eth.DepositMessage{
+		PublicKey:             sk.PublicKey().Marshal(),
+		Amount:                1000,
+		WithdrawalCredentials: withdrawalCred,
+	}
+	domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
+	require.NoError(t, err)
+	sr, err := signing.ComputeSigningRoot(depositMessage, domain)
+	require.NoError(t, err)
+	sig := sk.Sign(sr[:])
+	requests := []*enginev1.DepositRequest{
+		{
+			Pubkey:                depositMessage.PublicKey,
+			Index:                 0,
+			WithdrawalCredentials: depositMessage.WithdrawalCredentials,
+			Amount:                depositMessage.Amount,
+			Signature:             sig.Marshal(),
+		},
+	}
+	st, err = electra.ProcessDepositRequests(t.Context(), st, requests)
+	require.NoError(t, err)
+
+	pbd, err := st.PendingDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 1, len(pbd))
+	require.Equal(t, uint64(1000), pbd[0].Amount)
+}
+
 func TestProcessDeposit_Electra_Simple(t *testing.T) {
 	deps, _, err := util.DeterministicDepositsAndKeysSameValidator(3)
 	require.NoError(t, err)

beacon-chain/core/electra/error.go

@@ -6,11 +6,6 @@ type execReqErr struct {
 	error
 }
 
-// NewExecReqError creates a new execReqErr.
-func NewExecReqError(msg string) error {
-	return execReqErr{errors.New(msg)}
-}
-
 // IsExecutionRequestError returns true if the error has `execReqErr`.
 func IsExecutionRequestError(e error) bool {
 	if e == nil {

beacon-chain/core/electra/transition_no_verify_sig.go

@@ -1,12 +1,10 @@
-package transition
+package electra
 
 import (
 	"context"
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	coreRequests "github.com/OffchainLabs/prysm/v7/beacon-chain/core/requests"
 	v "github.com/OffchainLabs/prysm/v7/beacon-chain/core/validators"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
@@ -49,7 +47,7 @@ var (
 //      # [New in Electra:EIP7251]
 //      for_ops(body.execution_payload.consolidation_requests, process_consolidation_request)
 
-func electraOperations(ctx context.Context, st state.BeaconState, block interfaces.ReadOnlyBeaconBlock) (state.BeaconState, error) {
+func ProcessOperations(ctx context.Context, st state.BeaconState, block interfaces.ReadOnlyBeaconBlock) (state.BeaconState, error) {
 	var err error
 
 	// 6110 validations are in VerifyOperationLengths
@@ -65,60 +63,59 @@ func electraOperations(ctx context.Context, st state.BeaconState, block interfac
 			return nil, errors.Wrap(err, "could not update total active balance cache")
 		}
 	}
-	st, err = blocks.ProcessProposerSlashings(ctx, st, bb.ProposerSlashings(), exitInfo)
+	st, err = ProcessProposerSlashings(ctx, st, bb.ProposerSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessProposerSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair proposer slashing")
 	}
-	st, err = blocks.ProcessAttesterSlashings(ctx, st, bb.AttesterSlashings(), exitInfo)
+	st, err = ProcessAttesterSlashings(ctx, st, bb.AttesterSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttesterSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair attester slashing")
 	}
-	st, err = electra.ProcessAttestationsNoVerifySignature(ctx, st, block)
+	st, err = ProcessAttestationsNoVerifySignature(ctx, st, block)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttestationsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair attestation")
 	}
-	if _, err := electra.ProcessDeposits(ctx, st, bb.Deposits()); err != nil {
-		return nil, errors.Wrap(ErrProcessDepositsFailed, err.Error())
+	if _, err := ProcessDeposits(ctx, st, bb.Deposits()); err != nil { // new in electra
+		return nil, errors.Wrap(err, "could not process altair deposit")
 	}
-	st, err = blocks.ProcessVoluntaryExits(ctx, st, bb.VoluntaryExits(), exitInfo)
+	st, err = ProcessVoluntaryExits(ctx, st, bb.VoluntaryExits(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessVoluntaryExitsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process voluntary exits")
 	}
-	st, err = blocks.ProcessBLSToExecutionChanges(st, block)
+	st, err = ProcessBLSToExecutionChanges(st, block)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessBLSChangesFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process bls-to-execution changes")
 	}
 	// new in electra
 	requests, err := bb.ExecutionRequests()
 	if err != nil {
-		return nil, electra.NewExecReqError(errors.Wrap(err, "could not get execution requests").Error())
+		return nil, errors.Wrap(err, "could not get execution requests")
 	}
 	for _, d := range requests.Deposits {
 		if d == nil {
-			return nil, electra.NewExecReqError("nil deposit request")
+			return nil, errors.New("nil deposit request")
 		}
 	}
-	st, err = coreRequests.ProcessDepositRequests(ctx, st, requests.Deposits)
+	st, err = ProcessDepositRequests(ctx, st, requests.Deposits)
 	if err != nil {
-		return nil, electra.NewExecReqError(errors.Wrap(err, "could not process deposit requests").Error())
+		return nil, execReqErr{errors.Wrap(err, "could not process deposit requests")}
 	}
-
 	for _, w := range requests.Withdrawals {
 		if w == nil {
-			return nil, electra.NewExecReqError("nil withdrawal request")
+			return nil, errors.New("nil withdrawal request")
 		}
 	}
-	st, err = coreRequests.ProcessWithdrawalRequests(ctx, st, requests.Withdrawals)
+	st, err = ProcessWithdrawalRequests(ctx, st, requests.Withdrawals)
 	if err != nil {
-		return nil, electra.NewExecReqError(errors.Wrap(err, "could not process withdrawal requests").Error())
+		return nil, execReqErr{errors.Wrap(err, "could not process withdrawal requests")}
 	}
 	for _, c := range requests.Consolidations {
 		if c == nil {
-			return nil, electra.NewExecReqError("nil consolidation request")
+			return nil, errors.New("nil consolidation request")
 		}
 	}
-	if err := coreRequests.ProcessConsolidationRequests(ctx, st, requests.Consolidations); err != nil {
-		return nil, electra.NewExecReqError(errors.Wrap(err, "could not process consolidation requests").Error())
+	if err := ProcessConsolidationRequests(ctx, st, requests.Consolidations); err != nil {
+		return nil, execReqErr{errors.Wrap(err, "could not process consolidation requests")}
 	}
 	return st, nil
 }

beacon-chain/core/electra/transition_no_verify_sig_test.go

@@ -0,0 +1,60 @@
+package electra_test
+
+import (
+	"testing"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra"
+	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
+	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
+	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+	"github.com/OffchainLabs/prysm/v7/testing/require"
+	"github.com/OffchainLabs/prysm/v7/testing/util"
+)
+
+func TestProcessOperationsWithNilRequests(t *testing.T) {
+	tests := []struct {
+		name      string
+		modifyBlk func(blockElectra *ethpb.SignedBeaconBlockElectra)
+		errMsg    string
+	}{
+		{
+			name: "Nil deposit request",
+			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
+				blk.Block.Body.ExecutionRequests.Deposits = []*enginev1.DepositRequest{nil}
+			},
+			errMsg: "nil deposit request",
+		},
+		{
+			name: "Nil withdrawal request",
+			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
+				blk.Block.Body.ExecutionRequests.Withdrawals = []*enginev1.WithdrawalRequest{nil}
+			},
+			errMsg: "nil withdrawal request",
+		},
+		{
+			name: "Nil consolidation request",
+			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
+				blk.Block.Body.ExecutionRequests.Consolidations = []*enginev1.ConsolidationRequest{nil}
+			},
+			errMsg: "nil consolidation request",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			st, ks := util.DeterministicGenesisStateElectra(t, 128)
+			blk, err := util.GenerateFullBlockElectra(st, ks, util.DefaultBlockGenConfig(), 1)
+			require.NoError(t, err)
+
+			tc.modifyBlk(blk)
+
+			b, err := blocks.NewSignedBeaconBlock(blk)
+			require.NoError(t, err)
+
+			require.NoError(t, st.SetSlot(1))
+
+			_, err = electra.ProcessOperations(t.Context(), st, b.Block())
+			require.ErrorContains(t, tc.errMsg, err)
+		})
+	}
+}

beacon-chain/core/electra/withdrawals.go

@@ -1,4 +1,4 @@
-package requests
+package electra
 
 import (
 	"bytes"
@@ -88,7 +88,7 @@ import (
 //	        withdrawable_epoch=withdrawable_epoch,
 //	    ))
 func ProcessWithdrawalRequests(ctx context.Context, st state.BeaconState, wrs []*enginev1.WithdrawalRequest) (state.BeaconState, error) {
-	ctx, span := trace.StartSpan(ctx, "requests.ProcessWithdrawalRequests")
+	ctx, span := trace.StartSpan(ctx, "electra.ProcessWithdrawalRequests")
 	defer span.End()
 	currentEpoch := slots.ToEpoch(st.Slot())
 	if len(wrs) == 0 {

beacon-chain/core/electra/withdrawals_test.go

@@ -1,9 +1,9 @@
-package requests_test
+package electra_test
 
 import (
 	"testing"
 
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/requests"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -289,7 +289,7 @@ func TestProcessWithdrawRequests(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 
-			got, err := requests.ProcessWithdrawalRequests(t.Context(), tt.args.st, tt.args.wrs)
+			got, err := electra.ProcessWithdrawalRequests(t.Context(), tt.args.st, tt.args.wrs)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("ProcessWithdrawalRequests() error = %v, wantErr %v", err, tt.wantErr)
 				return

beacon-chain/core/gloas/BUILD.bazel

@@ -1,66 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "bid.go",
-        "payload_attestation.go",
-        "pending_payment.go",
-        "proposer_slashing.go",
-    ],
-    importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/core/gloas",
-    visibility = ["//visibility:public"],
-    deps = [
-        "//beacon-chain/core/helpers:go_default_library",
-        "//beacon-chain/core/signing:go_default_library",
-        "//beacon-chain/core/time:go_default_library",
-        "//beacon-chain/state:go_default_library",
-        "//config/fieldparams:go_default_library",
-        "//config/params:go_default_library",
-        "//consensus-types:go_default_library",
-        "//consensus-types/blocks:go_default_library",
-        "//consensus-types/interfaces:go_default_library",
-        "//consensus-types/primitives:go_default_library",
-        "//crypto/bls:go_default_library",
-        "//crypto/bls/common:go_default_library",
-        "//crypto/hash:go_default_library",
-        "//encoding/bytesutil:go_default_library",
-        "//proto/prysm/v1alpha1:go_default_library",
-        "//time/slots:go_default_library",
-        "@com_github_pkg_errors//:go_default_library",
-    ],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = [
-        "bid_test.go",
-        "payload_attestation_test.go",
-        "pending_payment_test.go",
-        "proposer_slashing_test.go",
-    ],
-    embed = [":go_default_library"],
-    deps = [
-        "//beacon-chain/core/helpers:go_default_library",
-        "//beacon-chain/core/signing:go_default_library",
-        "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/state-native:go_default_library",
-        "//config/params:go_default_library",
-        "//consensus-types/blocks:go_default_library",
-        "//consensus-types/interfaces:go_default_library",
-        "//consensus-types/primitives:go_default_library",
-        "//crypto/bls:go_default_library",
-        "//crypto/bls/common:go_default_library",
-        "//encoding/bytesutil:go_default_library",
-        "//proto/engine/v1:go_default_library",
-        "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/validator-client:go_default_library",
-        "//runtime/version:go_default_library",
-        "//testing/require:go_default_library",
-        "//testing/util:go_default_library",
-        "//time/slots:go_default_library",
-        "@com_github_prysmaticlabs_fastssz//:go_default_library",
-        "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
-        "@org_golang_google_protobuf//proto:go_default_library",
-    ],
-)

beacon-chain/core/gloas/bid.go

@@ -1,193 +0,0 @@
-package gloas
-
-import (
-	"fmt"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls/common"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-	"github.com/pkg/errors"
-)
-
-// ProcessExecutionPayloadBid processes a signed execution payload bid in the Gloas fork.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// process_execution_payload_bid(state: BeaconState, block: BeaconBlock):
-//
-//	signed_bid = block.body.signed_execution_payload_bid
-//	bid = signed_bid.message
-//	builder_index = bid.builder_index
-//	amount = bid.value
-//	if builder_index == BUILDER_INDEX_SELF_BUILD:
-//	  assert amount == 0
-//	  assert signed_bid.signature == G2_POINT_AT_INFINITY
-//	else:
-//	  assert is_active_builder(state, builder_index)
-//	  assert can_builder_cover_bid(state, builder_index, amount)
-//	  assert verify_execution_payload_bid_signature(state, signed_bid)
-//	assert bid.slot == block.slot
-//	assert bid.parent_block_hash == state.latest_block_hash
-//	assert bid.parent_block_root == block.parent_root
-//	assert bid.prev_randao == get_randao_mix(state, get_current_epoch(state))
-//	if amount > 0:
-//	  state.builder_pending_payments[...] = BuilderPendingPayment(weight=0, withdrawal=BuilderPendingWithdrawal(fee_recipient=bid.fee_recipient, amount=amount, builder_index=builder_index))
-//	state.latest_execution_payload_bid = bid
-func ProcessExecutionPayloadBid(st state.BeaconState, block interfaces.ReadOnlyBeaconBlock) error {
-	signedBid, err := block.Body().SignedExecutionPayloadBid()
-	if err != nil {
-		return errors.Wrap(err, "failed to get signed execution payload bid")
-	}
-
-	wrappedBid, err := blocks.WrappedROSignedExecutionPayloadBid(signedBid)
-	if err != nil {
-		return errors.Wrap(err, "failed to wrap signed bid")
-	}
-
-	bid, err := wrappedBid.Bid()
-	if err != nil {
-		return errors.Wrap(err, "failed to get bid from wrapped bid")
-	}
-
-	builderIndex := bid.BuilderIndex()
-	amount := bid.Value()
-
-	if builderIndex == params.BeaconConfig().BuilderIndexSelfBuild {
-		if amount != 0 {
-			return fmt.Errorf("self-build amount must be zero, got %d", amount)
-		}
-		if wrappedBid.Signature() != common.InfiniteSignature {
-			return errors.New("self-build signature must be point at infinity")
-		}
-	} else {
-		ok, err := st.IsActiveBuilder(builderIndex)
-		if err != nil {
-			return errors.Wrap(err, "builder active check failed")
-		}
-		if !ok {
-			return fmt.Errorf("builder %d is not active", builderIndex)
-		}
-
-		ok, err = st.CanBuilderCoverBid(builderIndex, amount)
-		if err != nil {
-			return errors.Wrap(err, "builder balance check failed")
-		}
-		if !ok {
-			return fmt.Errorf("builder %d cannot cover bid amount %d", builderIndex, amount)
-		}
-
-		if err := validatePayloadBidSignature(st, wrappedBid); err != nil {
-			return errors.Wrap(err, "bid signature validation failed")
-		}
-	}
-
-	if err := validateBidConsistency(st, bid, block); err != nil {
-		return errors.Wrap(err, "bid consistency validation failed")
-	}
-
-	if amount > 0 {
-		feeRecipient := bid.FeeRecipient()
-		pendingPayment := &ethpb.BuilderPendingPayment{
-			Weight: 0,
-			Withdrawal: &ethpb.BuilderPendingWithdrawal{
-				FeeRecipient: feeRecipient[:],
-				Amount:       amount,
-				BuilderIndex: builderIndex,
-			},
-		}
-		slotIndex := params.BeaconConfig().SlotsPerEpoch + (bid.Slot() % params.BeaconConfig().SlotsPerEpoch)
-		if err := st.SetBuilderPendingPayment(slotIndex, pendingPayment); err != nil {
-			return errors.Wrap(err, "failed to set pending payment")
-		}
-	}
-
-	if err := st.SetExecutionPayloadBid(bid); err != nil {
-		return errors.Wrap(err, "failed to cache execution payload bid")
-	}
-
-	return nil
-}
-
-// validateBidConsistency checks that the bid is consistent with the current beacon state.
-func validateBidConsistency(st state.BeaconState, bid interfaces.ROExecutionPayloadBid, block interfaces.ReadOnlyBeaconBlock) error {
-	if bid.Slot() != block.Slot() {
-		return fmt.Errorf("bid slot %d does not match block slot %d", bid.Slot(), block.Slot())
-	}
-
-	latestBlockHash, err := st.LatestBlockHash()
-	if err != nil {
-		return errors.Wrap(err, "failed to get latest block hash")
-	}
-	if bid.ParentBlockHash() != latestBlockHash {
-		return fmt.Errorf("bid parent block hash mismatch: got %x, expected %x",
-			bid.ParentBlockHash(), latestBlockHash)
-	}
-
-	if bid.ParentBlockRoot() != block.ParentRoot() {
-		return fmt.Errorf("bid parent block root mismatch: got %x, expected %x",
-			bid.ParentBlockRoot(), block.ParentRoot())
-	}
-
-	randaoMix, err := helpers.RandaoMix(st, slots.ToEpoch(st.Slot()))
-	if err != nil {
-		return errors.Wrap(err, "failed to get randao mix")
-	}
-	if bid.PrevRandao() != [32]byte(randaoMix) {
-		return fmt.Errorf("bid prev randao mismatch: got %x, expected %x", bid.PrevRandao(), randaoMix)
-	}
-
-	return nil
-}
-
-// validatePayloadBidSignature verifies the BLS signature on a signed execution payload bid.
-// It validates that the signature was created by the builder specified in the bid
-// using the appropriate domain for the beacon builder.
-func validatePayloadBidSignature(st state.ReadOnlyBeaconState, signedBid interfaces.ROSignedExecutionPayloadBid) error {
-	bid, err := signedBid.Bid()
-	if err != nil {
-		return errors.Wrap(err, "failed to get bid")
-	}
-
-	pubkey, err := st.BuilderPubkey(bid.BuilderIndex())
-	if err != nil {
-		return errors.Wrap(err, "failed to get builder pubkey")
-	}
-
-	publicKey, err := bls.PublicKeyFromBytes(pubkey[:])
-	if err != nil {
-		return errors.Wrap(err, "invalid builder public key")
-	}
-
-	signatureBytes := signedBid.Signature()
-	signature, err := bls.SignatureFromBytes(signatureBytes[:])
-	if err != nil {
-		return errors.Wrap(err, "invalid signature format")
-	}
-
-	currentEpoch := slots.ToEpoch(bid.Slot())
-	domain, err := signing.Domain(
-		st.Fork(),
-		currentEpoch,
-		params.BeaconConfig().DomainBeaconBuilder,
-		st.GenesisValidatorsRoot(),
-	)
-	if err != nil {
-		return errors.Wrap(err, "failed to compute signing domain")
-	}
-
-	signingRoot, err := signedBid.SigningRoot(domain)
-	if err != nil {
-		return errors.Wrap(err, "failed to compute signing root")
-	}
-
-	if !signature.Verify(publicKey, signingRoot[:]) {
-		return signing.ErrSigFailedToVerify
-	}
-
-	return nil
-}

beacon-chain/core/gloas/bid_test.go

@@ -1,633 +0,0 @@
-package gloas
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls/common"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	validatorpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1/validator-client"
-	"github.com/OffchainLabs/prysm/v7/runtime/version"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-	fastssz "github.com/prysmaticlabs/fastssz"
-	"google.golang.org/protobuf/proto"
-)
-
-type stubBlockBody struct {
-	signedBid *ethpb.SignedExecutionPayloadBid
-}
-
-func (s stubBlockBody) Version() int                                 { return version.Gloas }
-func (s stubBlockBody) RandaoReveal() [96]byte                       { return [96]byte{} }
-func (s stubBlockBody) Eth1Data() *ethpb.Eth1Data                    { return nil }
-func (s stubBlockBody) Graffiti() [32]byte                           { return [32]byte{} }
-func (s stubBlockBody) ProposerSlashings() []*ethpb.ProposerSlashing { return nil }
-func (s stubBlockBody) AttesterSlashings() []ethpb.AttSlashing       { return nil }
-func (s stubBlockBody) Attestations() []ethpb.Att                    { return nil }
-func (s stubBlockBody) Deposits() []*ethpb.Deposit                   { return nil }
-func (s stubBlockBody) VoluntaryExits() []*ethpb.SignedVoluntaryExit { return nil }
-func (s stubBlockBody) SyncAggregate() (*ethpb.SyncAggregate, error) { return nil, nil }
-func (s stubBlockBody) IsNil() bool                                  { return s.signedBid == nil }
-func (s stubBlockBody) HashTreeRoot() ([32]byte, error)              { return [32]byte{}, nil }
-func (s stubBlockBody) Proto() (proto.Message, error)                { return nil, nil }
-func (s stubBlockBody) Execution() (interfaces.ExecutionData, error) { return nil, nil }
-func (s stubBlockBody) BLSToExecutionChanges() ([]*ethpb.SignedBLSToExecutionChange, error) {
-	return nil, nil
-}
-func (s stubBlockBody) BlobKzgCommitments() ([][]byte, error) { return nil, nil }
-func (s stubBlockBody) ExecutionRequests() (*enginev1.ExecutionRequests, error) {
-	return nil, nil
-}
-func (s stubBlockBody) PayloadAttestations() ([]*ethpb.PayloadAttestation, error) {
-	return nil, nil
-}
-func (s stubBlockBody) SignedExecutionPayloadBid() (*ethpb.SignedExecutionPayloadBid, error) {
-	return s.signedBid, nil
-}
-func (s stubBlockBody) MarshalSSZ() ([]byte, error)         { return nil, nil }
-func (s stubBlockBody) MarshalSSZTo([]byte) ([]byte, error) { return nil, nil }
-func (s stubBlockBody) UnmarshalSSZ([]byte) error           { return nil }
-func (s stubBlockBody) SizeSSZ() int                        { return 0 }
-
-type stubBlock struct {
-	slot       primitives.Slot
-	proposer   primitives.ValidatorIndex
-	parentRoot [32]byte
-	body       stubBlockBody
-	v          int
-}
-
-var (
-	_ interfaces.ReadOnlyBeaconBlockBody = (*stubBlockBody)(nil)
-	_ interfaces.ReadOnlyBeaconBlock     = (*stubBlock)(nil)
-)
-
-func (s stubBlock) Slot() primitives.Slot                    { return s.slot }
-func (s stubBlock) ProposerIndex() primitives.ValidatorIndex { return s.proposer }
-func (s stubBlock) ParentRoot() [32]byte                     { return s.parentRoot }
-func (s stubBlock) StateRoot() [32]byte                      { return [32]byte{} }
-func (s stubBlock) Body() interfaces.ReadOnlyBeaconBlockBody { return s.body }
-func (s stubBlock) IsNil() bool                              { return false }
-func (s stubBlock) IsBlinded() bool                          { return false }
-func (s stubBlock) HashTreeRoot() ([32]byte, error)          { return [32]byte{}, nil }
-func (s stubBlock) Proto() (proto.Message, error)            { return nil, nil }
-func (s stubBlock) MarshalSSZ() ([]byte, error)              { return nil, nil }
-func (s stubBlock) MarshalSSZTo([]byte) ([]byte, error)      { return nil, nil }
-func (s stubBlock) UnmarshalSSZ([]byte) error                { return nil }
-func (s stubBlock) SizeSSZ() int                             { return 0 }
-func (s stubBlock) Version() int                             { return s.v }
-func (s stubBlock) AsSignRequestObject() (validatorpb.SignRequestObject, error) {
-	return nil, nil
-}
-func (s stubBlock) HashTreeRootWith(*fastssz.Hasher) error { return nil }
-
-func buildGloasState(t *testing.T, slot primitives.Slot, proposerIdx primitives.ValidatorIndex, builderIdx primitives.BuilderIndex, balance uint64, randao [32]byte, latestHash [32]byte, builderPubkey [48]byte) *state_native.BeaconState {
-	t.Helper()
-
-	cfg := params.BeaconConfig()
-	blockRoots := make([][]byte, cfg.SlotsPerHistoricalRoot)
-	stateRoots := make([][]byte, cfg.SlotsPerHistoricalRoot)
-	for i := range blockRoots {
-		blockRoots[i] = bytes.Repeat([]byte{0xAA}, 32)
-		stateRoots[i] = bytes.Repeat([]byte{0xBB}, 32)
-	}
-	randaoMixes := make([][]byte, cfg.EpochsPerHistoricalVector)
-	for i := range randaoMixes {
-		randaoMixes[i] = randao[:]
-	}
-
-	withdrawalCreds := make([]byte, 32)
-	withdrawalCreds[0] = cfg.BuilderWithdrawalPrefixByte
-
-	validatorCount := int(proposerIdx) + 1
-	validators := make([]*ethpb.Validator, validatorCount)
-	balances := make([]uint64, validatorCount)
-	for i := range validatorCount {
-		validators[i] = &ethpb.Validator{
-			PublicKey:                  builderPubkey[:],
-			WithdrawalCredentials:      withdrawalCreds,
-			EffectiveBalance:           balance,
-			Slashed:                    false,
-			ActivationEligibilityEpoch: 0,
-			ActivationEpoch:            0,
-			ExitEpoch:                  cfg.FarFutureEpoch,
-			WithdrawableEpoch:          cfg.FarFutureEpoch,
-		}
-		balances[i] = balance
-	}
-
-	payments := make([]*ethpb.BuilderPendingPayment, cfg.SlotsPerEpoch*2)
-	for i := range payments {
-		payments[i] = &ethpb.BuilderPendingPayment{Withdrawal: &ethpb.BuilderPendingWithdrawal{}}
-	}
-
-	var builders []*ethpb.Builder
-	if builderIdx != params.BeaconConfig().BuilderIndexSelfBuild {
-		builderCount := int(builderIdx) + 1
-		builders = make([]*ethpb.Builder, builderCount)
-		builders[builderCount-1] = &ethpb.Builder{
-			Pubkey:            builderPubkey[:],
-			Version:           []byte{0},
-			ExecutionAddress:  bytes.Repeat([]byte{0x01}, 20),
-			Balance:           primitives.Gwei(balance),
-			DepositEpoch:      0,
-			WithdrawableEpoch: cfg.FarFutureEpoch,
-		}
-	}
-
-	stProto := &ethpb.BeaconStateGloas{
-		Slot:                  slot,
-		GenesisValidatorsRoot: bytes.Repeat([]byte{0x11}, 32),
-		Fork: &ethpb.Fork{
-			CurrentVersion:  bytes.Repeat([]byte{0x22}, 4),
-			PreviousVersion: bytes.Repeat([]byte{0x22}, 4),
-			Epoch:           0,
-		},
-		BlockRoots:                blockRoots,
-		StateRoots:                stateRoots,
-		RandaoMixes:               randaoMixes,
-		Validators:                validators,
-		Balances:                  balances,
-		LatestBlockHash:           latestHash[:],
-		BuilderPendingPayments:    payments,
-		BuilderPendingWithdrawals: []*ethpb.BuilderPendingWithdrawal{},
-		Builders:                  builders,
-		FinalizedCheckpoint: &ethpb.Checkpoint{
-			Epoch: 1,
-		},
-	}
-
-	st, err := state_native.InitializeFromProtoGloas(stProto)
-	require.NoError(t, err)
-	return st.(*state_native.BeaconState)
-}
-
-func signBid(t *testing.T, sk common.SecretKey, bid *ethpb.ExecutionPayloadBid, fork *ethpb.Fork, genesisRoot [32]byte) [96]byte {
-	t.Helper()
-	epoch := slots.ToEpoch(primitives.Slot(bid.Slot))
-	domain, err := signing.Domain(fork, epoch, params.BeaconConfig().DomainBeaconBuilder, genesisRoot[:])
-	require.NoError(t, err)
-	root, err := signing.ComputeSigningRoot(bid, domain)
-	require.NoError(t, err)
-	sig := sk.Sign(root[:]).Marshal()
-	var out [96]byte
-	copy(out[:], sig)
-	return out
-}
-
-func TestProcessExecutionPayloadBid_SelfBuildSuccess(t *testing.T) {
-	slot := primitives.Slot(12)
-	proposerIdx := primitives.ValidatorIndex(0)
-	builderIdx := params.BeaconConfig().BuilderIndexSelfBuild
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-	pubKey := [48]byte{}
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinActivationBalance+1000, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xCC}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xDD}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  0,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xEE}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xFF}, 20),
-	}
-	signed := &ethpb.SignedExecutionPayloadBid{
-		Message:   bid,
-		Signature: common.InfiniteSignature[:],
-	}
-
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	require.NoError(t, ProcessExecutionPayloadBid(state, block))
-
-	stateProto, ok := state.ToProto().(*ethpb.BeaconStateGloas)
-	require.Equal(t, true, ok)
-	slotIndex := params.BeaconConfig().SlotsPerEpoch + (slot % params.BeaconConfig().SlotsPerEpoch)
-	require.Equal(t, primitives.Gwei(0), stateProto.BuilderPendingPayments[slotIndex].Withdrawal.Amount)
-}
-
-func TestProcessExecutionPayloadBid_SelfBuildNonZeroAmountFails(t *testing.T) {
-	slot := primitives.Slot(2)
-	proposerIdx := primitives.ValidatorIndex(0)
-	builderIdx := params.BeaconConfig().BuilderIndexSelfBuild
-	randao := [32]byte{}
-	latestHash := [32]byte{1}
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinActivationBalance+1000, randao, latestHash, [48]byte{})
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xAA}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xBB}, 32),
-		PrevRandao:             randao[:],
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  10,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xCC}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xDD}, 20),
-	}
-	signed := &ethpb.SignedExecutionPayloadBid{
-		Message:   bid,
-		Signature: common.InfiniteSignature[:],
-	}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err := ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "self-build amount must be zero", err)
-}
-
-func TestProcessExecutionPayloadBid_PendingPaymentAndCacheBid(t *testing.T) {
-	slot := primitives.Slot(8)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	pub := sk.PublicKey().Marshal()
-	var pubKey [48]byte
-	copy(pubKey[:], pub)
-
-	balance := params.BeaconConfig().MinActivationBalance + 1_000_000
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, balance, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xCC}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xDD}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  500_000,
-		ExecutionPayment:       1,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xEE}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xFF}, 20),
-	}
-
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{
-		Message:   bid,
-		Signature: sig[:],
-	}
-
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx, // not self-build
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	require.NoError(t, ProcessExecutionPayloadBid(state, block))
-
-	stateProto, ok := state.ToProto().(*ethpb.BeaconStateGloas)
-	require.Equal(t, true, ok)
-	slotIndex := params.BeaconConfig().SlotsPerEpoch + (slot % params.BeaconConfig().SlotsPerEpoch)
-	require.Equal(t, primitives.Gwei(500_000), stateProto.BuilderPendingPayments[slotIndex].Withdrawal.Amount)
-
-	require.NotNil(t, stateProto.LatestExecutionPayloadBid)
-	require.Equal(t, primitives.BuilderIndex(1), stateProto.LatestExecutionPayloadBid.BuilderIndex)
-	require.Equal(t, primitives.Gwei(500_000), stateProto.LatestExecutionPayloadBid.Value)
-}
-
-func TestProcessExecutionPayloadBid_BuilderNotActive(t *testing.T) {
-	slot := primitives.Slot(4)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0x01}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0x02}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-	// Make builder inactive by setting withdrawable_epoch.
-	stateProto := state.ToProto().(*ethpb.BeaconStateGloas)
-	stateProto.Builders[int(builderIdx)].WithdrawableEpoch = 0
-	stateIface, err := state_native.InitializeFromProtoGloas(stateProto)
-	require.NoError(t, err)
-	state = stateIface.(*state_native.BeaconState)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0x03}, 32),
-		BlockHash:              bytes.Repeat([]byte{0x04}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  10,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0x05}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0x06}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "is not active", err)
-}
-
-func TestProcessExecutionPayloadBid_CannotCoverBid(t *testing.T) {
-	slot := primitives.Slot(5)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0x0A}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0x0B}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+10, randao, latestHash, pubKey)
-	stateProto := state.ToProto().(*ethpb.BeaconStateGloas)
-	// Add pending balances to push below required balance.
-	stateProto.BuilderPendingWithdrawals = []*ethpb.BuilderPendingWithdrawal{
-		{Amount: 15, BuilderIndex: builderIdx},
-	}
-	stateProto.BuilderPendingPayments = []*ethpb.BuilderPendingPayment{
-		{Withdrawal: &ethpb.BuilderPendingWithdrawal{Amount: 20, BuilderIndex: builderIdx}},
-	}
-	stateIface, err := state_native.InitializeFromProtoGloas(stateProto)
-	require.NoError(t, err)
-	state = stateIface.(*state_native.BeaconState)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xCC}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xDD}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  25,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xEE}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xFF}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "cannot cover bid amount", err)
-}
-
-func TestProcessExecutionPayloadBid_InvalidSignature(t *testing.T) {
-	slot := primitives.Slot(6)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xCC}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xDD}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  10,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xEE}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xFF}, 20),
-	}
-	// Use an invalid signature.
-	invalidSig := [96]byte{1}
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: invalidSig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "bid signature validation failed", err)
-}
-
-func TestProcessExecutionPayloadBid_SlotMismatch(t *testing.T) {
-	slot := primitives.Slot(10)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0xAA}, 32),
-		BlockHash:              bytes.Repeat([]byte{0xBB}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot + 1, // mismatch
-		Value:                  1,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0xCC}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0xDD}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "bid slot", err)
-}
-
-func TestProcessExecutionPayloadBid_ParentHashMismatch(t *testing.T) {
-	slot := primitives.Slot(11)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        bytes.Repeat([]byte{0x11}, 32), // mismatch
-		ParentBlockRoot:        bytes.Repeat([]byte{0x22}, 32),
-		BlockHash:              bytes.Repeat([]byte{0x33}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  1,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0x44}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0x55}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "parent block hash mismatch", err)
-}
-
-func TestProcessExecutionPayloadBid_ParentRootMismatch(t *testing.T) {
-	slot := primitives.Slot(12)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-
-	parentRoot := bytes.Repeat([]byte{0x22}, 32)
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        parentRoot,
-		BlockHash:              bytes.Repeat([]byte{0x33}, 32),
-		PrevRandao:             randao[:],
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  1,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0x44}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0x55}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bytes.Repeat([]byte{0x99}, 32)), // mismatch
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "parent block root mismatch", err)
-}
-
-func TestProcessExecutionPayloadBid_PrevRandaoMismatch(t *testing.T) {
-	slot := primitives.Slot(13)
-	builderIdx := primitives.BuilderIndex(1)
-	proposerIdx := primitives.ValidatorIndex(2)
-	randao := [32]byte(bytes.Repeat([]byte{0xAA}, 32))
-	latestHash := [32]byte(bytes.Repeat([]byte{0xBB}, 32))
-
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	var pubKey [48]byte
-	copy(pubKey[:], sk.PublicKey().Marshal())
-
-	state := buildGloasState(t, slot, proposerIdx, builderIdx, params.BeaconConfig().MinDepositAmount+1000, randao, latestHash, pubKey)
-
-	bid := &ethpb.ExecutionPayloadBid{
-		ParentBlockHash:        latestHash[:],
-		ParentBlockRoot:        bytes.Repeat([]byte{0x22}, 32),
-		BlockHash:              bytes.Repeat([]byte{0x33}, 32),
-		PrevRandao:             bytes.Repeat([]byte{0x01}, 32), // mismatch
-		GasLimit:               1,
-		BuilderIndex:           builderIdx,
-		Slot:                   slot,
-		Value:                  1,
-		ExecutionPayment:       0,
-		BlobKzgCommitmentsRoot: bytes.Repeat([]byte{0x44}, 32),
-		FeeRecipient:           bytes.Repeat([]byte{0x55}, 20),
-	}
-	genesis := bytesutil.ToBytes32(state.GenesisValidatorsRoot())
-	sig := signBid(t, sk, bid, state.Fork(), genesis)
-	signed := &ethpb.SignedExecutionPayloadBid{Message: bid, Signature: sig[:]}
-	block := stubBlock{
-		slot:       slot,
-		proposer:   proposerIdx,
-		parentRoot: bytesutil.ToBytes32(bid.ParentBlockRoot),
-		body:       stubBlockBody{signedBid: signed},
-		v:          version.Gloas,
-	}
-
-	err = ProcessExecutionPayloadBid(state, block)
-	require.ErrorContains(t, "prev randao mismatch", err)
-}

beacon-chain/core/gloas/payload_attestation.go

@@ -1,253 +0,0 @@
-package gloas
-
-import (
-	"bytes"
-	"context"
-	"encoding/binary"
-	"fmt"
-	"slices"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	consensus_types "github.com/OffchainLabs/prysm/v7/consensus-types"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls"
-	"github.com/OffchainLabs/prysm/v7/crypto/hash"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-	"github.com/pkg/errors"
-)
-
-// ProcessPayloadAttestations validates payload attestations in a block body.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// process_payload_attestation(state: BeaconState, payload_attestation: PayloadAttestation):
-//
-//	data = payload_attestation.data
-//	assert data.beacon_block_root == state.latest_block_header.parent_root
-//	assert data.slot + 1 == state.slot
-//	indexed = get_indexed_payload_attestation(state, data.slot, payload_attestation)
-//	assert is_valid_indexed_payload_attestation(state, indexed)
-func ProcessPayloadAttestations(ctx context.Context, st state.BeaconState, body interfaces.ReadOnlyBeaconBlockBody) error {
-	atts, err := body.PayloadAttestations()
-	if err != nil {
-		return errors.Wrap(err, "failed to get payload attestations from block body")
-	}
-	if len(atts) == 0 {
-		return nil
-	}
-
-	header := st.LatestBlockHeader()
-
-	for i, att := range atts {
-		data := att.Data
-		if !bytes.Equal(data.BeaconBlockRoot, header.ParentRoot) {
-			return fmt.Errorf("payload attestation %d has wrong parent: got %x want %x", i, data.BeaconBlockRoot, header.ParentRoot)
-		}
-
-		dataSlot, err := data.Slot.SafeAdd(1)
-		if err != nil {
-			return errors.Wrapf(err, "payload attestation %d has invalid slot addition", i)
-		}
-		if dataSlot != st.Slot() {
-			return fmt.Errorf("payload attestation %d has wrong slot: got %d want %d", i, data.Slot+1, st.Slot())
-		}
-
-		indexed, err := indexedPayloadAttestation(ctx, st, att)
-		if err != nil {
-			return errors.Wrapf(err, "payload attestation %d failed to convert to indexed form", i)
-		}
-		if err := validIndexedPayloadAttestation(st, indexed); err != nil {
-			return errors.Wrapf(err, "payload attestation %d failed to verify indexed form", i)
-		}
-	}
-	return nil
-}
-
-// indexedPayloadAttestation converts a payload attestation into its indexed form.
-func indexedPayloadAttestation(ctx context.Context, st state.ReadOnlyBeaconState, att *eth.PayloadAttestation) (*consensus_types.IndexedPayloadAttestation, error) {
-	committee, err := payloadCommittee(ctx, st, att.Data.Slot)
-	if err != nil {
-		return nil, err
-	}
-	indices := make([]primitives.ValidatorIndex, 0, len(committee))
-	for i, idx := range committee {
-		if att.AggregationBits.BitAt(uint64(i)) {
-			indices = append(indices, idx)
-		}
-	}
-	slices.Sort(indices)
-
-	return &consensus_types.IndexedPayloadAttestation{
-		AttestingIndices: indices,
-		Data:             att.Data,
-		Signature:        att.Signature,
-	}, nil
-}
-
-// payloadCommittee returns the payload timeliness committee for a given slot for the state.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// get_ptc(state: BeaconState, slot: Slot) -> Vector[ValidatorIndex, PTC_SIZE]:
-//
-//	epoch = compute_epoch_at_slot(slot)
-//	seed = hash(get_seed(state, epoch, DOMAIN_PTC_ATTESTER) + uint_to_bytes(slot))
-//	indices = []
-//	committees_per_slot = get_committee_count_per_slot(state, epoch)
-//	for i in range(committees_per_slot):
-//	  committee = get_beacon_committee(state, slot, CommitteeIndex(i))
-//	  indices.extend(committee)
-//	return compute_balance_weighted_selection(state, indices, seed, size=PTC_SIZE, shuffle_indices=False)
-func payloadCommittee(ctx context.Context, st state.ReadOnlyBeaconState, slot primitives.Slot) ([]primitives.ValidatorIndex, error) {
-	epoch := slots.ToEpoch(slot)
-	seed, err := ptcSeed(st, epoch, slot)
-	if err != nil {
-		return nil, err
-	}
-
-	activeCount, err := helpers.ActiveValidatorCount(ctx, st, epoch)
-	if err != nil {
-		return nil, err
-	}
-
-	committeesPerSlot := helpers.SlotCommitteeCount(activeCount)
-	out := make([]primitives.ValidatorIndex, 0, activeCount/uint64(params.BeaconConfig().SlotsPerEpoch))
-
-	for i := primitives.CommitteeIndex(0); i < primitives.CommitteeIndex(committeesPerSlot); i++ {
-		committee, err := helpers.BeaconCommitteeFromState(ctx, st, slot, i)
-		if err != nil {
-			return nil, errors.Wrapf(err, "failed to get beacon committee %d", i)
-		}
-		out = append(out, committee...)
-	}
-
-	return selectByBalance(ctx, st, out, seed, fieldparams.PTCSize)
-}
-
-// ptcSeed computes the seed for the payload timeliness committee.
-func ptcSeed(st state.ReadOnlyBeaconState, epoch primitives.Epoch, slot primitives.Slot) ([32]byte, error) {
-	seed, err := helpers.Seed(st, epoch, params.BeaconConfig().DomainPTCAttester)
-	if err != nil {
-		return [32]byte{}, err
-	}
-	return hash.Hash(append(seed[:], bytesutil.Bytes8(uint64(slot))...)), nil
-}
-
-// selectByBalance selects a balance-weighted subset of input candidates.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// compute_balance_weighted_selection(state, indices, seed, size, shuffle_indices):
-// Note: shuffle_indices is false for PTC.
-//
-//	total = len(indices); selected = []; i = 0
-//	while len(selected) < size:
-//	  next = i % total
-//	  if shuffle_indices: next = compute_shuffled_index(next, total, seed)
-//	  if compute_balance_weighted_acceptance(state, indices[next], seed, i):
-//	    selected.append(indices[next])
-//	  i += 1
-func selectByBalance(ctx context.Context, st state.ReadOnlyBeaconState, candidates []primitives.ValidatorIndex, seed [32]byte, count uint64) ([]primitives.ValidatorIndex, error) {
-	if len(candidates) == 0 {
-		return nil, errors.New("no candidates for balance weighted selection")
-	}
-
-	hashFunc := hash.CustomSHA256Hasher()
-	// Pre-allocate buffer for hash input: seed (32 bytes) + round counter (8 bytes).
-	var buf [40]byte
-	copy(buf[:], seed[:])
-	maxBalance := params.BeaconConfig().MaxEffectiveBalanceElectra
-
-	selected := make([]primitives.ValidatorIndex, 0, count)
-	total := uint64(len(candidates))
-	for i := uint64(0); uint64(len(selected)) < count; i++ {
-		if ctx.Err() != nil {
-			return nil, ctx.Err()
-		}
-		idx := candidates[i%total]
-		ok, err := acceptByBalance(st, idx, buf[:], hashFunc, maxBalance, i)
-		if err != nil {
-			return nil, err
-		}
-		if ok {
-			selected = append(selected, idx)
-		}
-	}
-	return selected, nil
-}
-
-// acceptByBalance determines if a validator is accepted based on its effective balance.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// compute_balance_weighted_acceptance(state, index, seed, i):
-//
-//	MAX_RANDOM_VALUE = 2**16 - 1
-//	random_bytes = hash(seed + uint_to_bytes(i // 16))
-//	offset = i % 16 * 2
-//	random_value = bytes_to_uint64(random_bytes[offset:offset+2])
-//	effective_balance = state.validators[index].effective_balance
-//	return effective_balance * MAX_RANDOM_VALUE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_value
-func acceptByBalance(st state.ReadOnlyBeaconState, idx primitives.ValidatorIndex, seedBuf []byte, hashFunc func([]byte) [32]byte, maxBalance uint64, round uint64) (bool, error) {
-	// Reuse the seed buffer by overwriting the last 8 bytes with the round counter.
-	binary.LittleEndian.PutUint64(seedBuf[len(seedBuf)-8:], round/16)
-	random := hashFunc(seedBuf)
-	offset := (round % 16) * 2
-	randomValue := uint64(binary.LittleEndian.Uint16(random[offset : offset+2])) // 16-bit draw per spec
-
-	val, err := st.ValidatorAtIndex(idx)
-	if err != nil {
-		return false, errors.Wrapf(err, "validator %d", idx)
-	}
-
-	return val.EffectiveBalance*fieldparams.MaxRandomValueElectra >= maxBalance*randomValue, nil
-}
-
-// validIndexedPayloadAttestation verifies the signature of an indexed payload attestation.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// is_valid_indexed_payload_attestation(state: BeaconState, indexed_payload_attestation: IndexedPayloadAttestation) -> bool:
-//
-//	indices = indexed_payload_attestation.attesting_indices
-//	return len(indices) > 0 and indices == sorted(indices) and
-//	  bls.FastAggregateVerify(
-//	    [state.validators[i].pubkey for i in indices],
-//	    compute_signing_root(indexed_payload_attestation.data, get_domain(state, DOMAIN_PTC_ATTESTER, compute_epoch_at_slot(attestation.data.slot)),
-//	    indexed_payload_attestation.signature,
-//	  )
-func validIndexedPayloadAttestation(st state.ReadOnlyBeaconState, att *consensus_types.IndexedPayloadAttestation) error {
-	indices := att.AttestingIndices
-	if len(indices) == 0 || !slices.IsSorted(indices) {
-		return errors.New("attesting indices empty or unsorted")
-	}
-
-	pubkeys := make([]bls.PublicKey, len(indices))
-	for i, idx := range indices {
-		val, err := st.ValidatorAtIndexReadOnly(idx)
-		if err != nil {
-			return errors.Wrapf(err, "validator %d", idx)
-		}
-		keyBytes := val.PublicKey()
-		key, err := bls.PublicKeyFromBytes(keyBytes[:])
-		if err != nil {
-			return errors.Wrapf(err, "pubkey %d", idx)
-		}
-		pubkeys[i] = key
-	}
-
-	domain, err := signing.Domain(st.Fork(), slots.ToEpoch(att.Data.Slot), params.BeaconConfig().DomainPTCAttester, st.GenesisValidatorsRoot())
-	if err != nil {
-		return err
-	}
-	root, err := signing.ComputeSigningRoot(att.Data, domain)
-	if err != nil {
-		return err
-	}
-	sig, err := bls.SignatureFromBytes(att.Signature)
-	if err != nil {
-		return err
-	}
-
-	if !sig.FastAggregateVerify(pubkeys, root) {
-		return errors.New("invalid signature")
-	}
-	return nil
-}

beacon-chain/core/gloas/payload_attestation_test.go

@@ -1,305 +0,0 @@
-package gloas_test
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/OffchainLabs/go-bitfield"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/gloas"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls/common"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-	testutil "github.com/OffchainLabs/prysm/v7/testing/util"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-)
-
-func TestProcessPayloadAttestations_WrongParent(t *testing.T) {
-	setupTestConfig(t)
-
-	_, pk := newKey(t)
-	st := newTestState(t, []*eth.Validator{activeValidator(pk)}, 1)
-	require.NoError(t, st.SetSlot(2))
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	att := &eth.PayloadAttestation{
-		Data: &eth.PayloadAttestationData{
-			BeaconBlockRoot: bytes.Repeat([]byte{0xbb}, 32),
-			Slot:            1,
-		},
-		AggregationBits: bitfield.NewBitvector512(),
-		Signature:       make([]byte, 96),
-	}
-	body := buildBody(t, att)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.ErrorContains(t, "wrong parent", err)
-}
-
-func TestProcessPayloadAttestations_WrongSlot(t *testing.T) {
-	setupTestConfig(t)
-
-	_, pk := newKey(t)
-	st := newTestState(t, []*eth.Validator{activeValidator(pk)}, 1)
-	require.NoError(t, st.SetSlot(3))
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	att := &eth.PayloadAttestation{
-		Data: &eth.PayloadAttestationData{
-			BeaconBlockRoot: parentRoot,
-			Slot:            1,
-		},
-		AggregationBits: bitfield.NewBitvector512(),
-		Signature:       make([]byte, 96),
-	}
-	body := buildBody(t, att)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.ErrorContains(t, "wrong slot", err)
-}
-
-func TestProcessPayloadAttestations_InvalidSignature(t *testing.T) {
-	setupTestConfig(t)
-
-	_, pk1 := newKey(t)
-	sk2, pk2 := newKey(t)
-	vals := []*eth.Validator{activeValidator(pk1), activeValidator(pk2)}
-	st := newTestState(t, vals, 2)
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	attData := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            1,
-	}
-	att := &eth.PayloadAttestation{
-		Data:            attData,
-		AggregationBits: setBits(bitfield.NewBitvector512(), 0),
-		Signature:       signAttestation(t, st, attData, []common.SecretKey{sk2}),
-	}
-	body := buildBody(t, att)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.ErrorContains(t, "failed to verify indexed form", err)
-	require.ErrorContains(t, "invalid signature", err)
-}
-
-func TestProcessPayloadAttestations_EmptyAggregationBits(t *testing.T) {
-	setupTestConfig(t)
-
-	_, pk := newKey(t)
-	st := newTestState(t, []*eth.Validator{activeValidator(pk)}, 1)
-	require.NoError(t, st.SetSlot(2))
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	attData := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            1,
-	}
-	att := &eth.PayloadAttestation{
-		Data:            attData,
-		AggregationBits: bitfield.NewBitvector512(),
-		Signature:       make([]byte, 96),
-	}
-	body := buildBody(t, att)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.ErrorContains(t, "failed to verify indexed form", err)
-	require.ErrorContains(t, "attesting indices empty or unsorted", err)
-}
-
-func TestProcessPayloadAttestations_HappyPath(t *testing.T) {
-	helpers.ClearCache()
-	setupTestConfig(t)
-
-	sk1, pk1 := newKey(t)
-	sk2, pk2 := newKey(t)
-	vals := []*eth.Validator{activeValidator(pk1), activeValidator(pk2)}
-
-	st := newTestState(t, vals, 2)
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	attData := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            1,
-	}
-	aggBits := bitfield.NewBitvector512()
-	aggBits.SetBitAt(0, true)
-	aggBits.SetBitAt(1, true)
-
-	att := &eth.PayloadAttestation{
-		Data:            attData,
-		AggregationBits: aggBits,
-		Signature:       signAttestation(t, st, attData, []common.SecretKey{sk1, sk2}),
-	}
-	body := buildBody(t, att)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.NoError(t, err)
-}
-
-func TestProcessPayloadAttestations_MultipleAttestations(t *testing.T) {
-	helpers.ClearCache()
-	setupTestConfig(t)
-
-	sk1, pk1 := newKey(t)
-	sk2, pk2 := newKey(t)
-	vals := []*eth.Validator{activeValidator(pk1), activeValidator(pk2)}
-
-	st := newTestState(t, vals, 2)
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	attData1 := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            1,
-	}
-	attData2 := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            1,
-	}
-
-	att1 := &eth.PayloadAttestation{
-		Data:            attData1,
-		AggregationBits: setBits(bitfield.NewBitvector512(), 0),
-		Signature:       signAttestation(t, st, attData1, []common.SecretKey{sk1}),
-	}
-	att2 := &eth.PayloadAttestation{
-		Data:            attData2,
-		AggregationBits: setBits(bitfield.NewBitvector512(), 1),
-		Signature:       signAttestation(t, st, attData2, []common.SecretKey{sk2}),
-	}
-
-	body := buildBody(t, att1, att2)
-
-	err := gloas.ProcessPayloadAttestations(t.Context(), st, body)
-	require.NoError(t, err)
-}
-
-func TestProcessPayloadAttestations_IndexedVerificationError(t *testing.T) {
-	setupTestConfig(t)
-
-	_, pk := newKey(t)
-	st := newTestState(t, []*eth.Validator{activeValidator(pk)}, 1)
-	parentRoot := bytes.Repeat([]byte{0xaa}, 32)
-	require.NoError(t, st.SetLatestBlockHeader(&eth.BeaconBlockHeader{ParentRoot: parentRoot}))
-
-	attData := &eth.PayloadAttestationData{
-		BeaconBlockRoot: parentRoot,
-		Slot:            0,
-	}
-	att := &eth.PayloadAttestation{
-		Data:            attData,
-		AggregationBits: setBits(bitfield.NewBitvector512(), 0),
-		Signature:       make([]byte, 96),
-	}
-	body := buildBody(t, att)
-
-	errState := &validatorLookupErrState{
-		BeaconState: st,
-		errIndex:    0,
-	}
-	err := gloas.ProcessPayloadAttestations(t.Context(), errState, body)
-	require.ErrorContains(t, "failed to verify indexed form", err)
-	require.ErrorContains(t, "validator 0", err)
-}
-
-func newTestState(t *testing.T, vals []*eth.Validator, slot primitives.Slot) state.BeaconState {
-	st, err := testutil.NewBeaconState()
-	require.NoError(t, err)
-	for _, v := range vals {
-		require.NoError(t, st.AppendValidator(v))
-		require.NoError(t, st.AppendBalance(v.EffectiveBalance))
-	}
-	require.NoError(t, st.SetSlot(slot))
-	require.NoError(t, helpers.UpdateCommitteeCache(t.Context(), st, slots.ToEpoch(slot)))
-	return st
-}
-
-func setupTestConfig(t *testing.T) {
-	params.SetupTestConfigCleanup(t)
-	cfg := params.BeaconConfig().Copy()
-	cfg.SlotsPerEpoch = 1
-	cfg.MaxEffectiveBalanceElectra = cfg.MaxEffectiveBalance
-	params.OverrideBeaconConfig(cfg)
-}
-
-func buildBody(t *testing.T, atts ...*eth.PayloadAttestation) interfaces.ReadOnlyBeaconBlockBody {
-	body := &eth.BeaconBlockBodyGloas{
-		PayloadAttestations:   atts,
-		RandaoReveal:          make([]byte, 96),
-		Eth1Data:              &eth.Eth1Data{},
-		Graffiti:              make([]byte, 32),
-		ProposerSlashings:     []*eth.ProposerSlashing{},
-		AttesterSlashings:     []*eth.AttesterSlashingElectra{},
-		Attestations:          []*eth.AttestationElectra{},
-		Deposits:              []*eth.Deposit{},
-		VoluntaryExits:        []*eth.SignedVoluntaryExit{},
-		SyncAggregate:         &eth.SyncAggregate{},
-		BlsToExecutionChanges: []*eth.SignedBLSToExecutionChange{},
-	}
-	wrapped, err := blocks.NewBeaconBlockBody(body)
-	require.NoError(t, err)
-	return wrapped
-}
-
-func setBits(bits bitfield.Bitvector512, idx uint64) bitfield.Bitvector512 {
-	bits.SetBitAt(idx, true)
-	return bits
-}
-
-func activeValidator(pub []byte) *eth.Validator {
-	return &eth.Validator{
-		PublicKey:                  pub,
-		EffectiveBalance:           params.BeaconConfig().MaxEffectiveBalance,
-		WithdrawalCredentials:      make([]byte, 32),
-		ActivationEligibilityEpoch: 0,
-		ActivationEpoch:            0,
-		ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
-		WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
-	}
-}
-
-func newKey(t *testing.T) (common.SecretKey, []byte) {
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	return sk, sk.PublicKey().Marshal()
-}
-
-func signAttestation(t *testing.T, st state.ReadOnlyBeaconState, data *eth.PayloadAttestationData, sks []common.SecretKey) []byte {
-	domain, err := signing.Domain(st.Fork(), slots.ToEpoch(data.Slot), params.BeaconConfig().DomainPTCAttester, st.GenesisValidatorsRoot())
-	require.NoError(t, err)
-	root, err := signing.ComputeSigningRoot(data, domain)
-	require.NoError(t, err)
-
-	sigs := make([]common.Signature, len(sks))
-	for i, sk := range sks {
-		sigs[i] = sk.Sign(root[:])
-	}
-	agg := bls.AggregateSignatures(sigs)
-	return agg.Marshal()
-}
-
-type validatorLookupErrState struct {
-	state.BeaconState
-	errIndex primitives.ValidatorIndex
-}
-
-// ValidatorAtIndexReadOnly is overridden to simulate a missing validator lookup.
-func (s *validatorLookupErrState) ValidatorAtIndexReadOnly(idx primitives.ValidatorIndex) (state.ReadOnlyValidator, error) {
-	if idx == s.errIndex {
-		return nil, state.ErrNilValidatorsInState
-	}
-	return s.BeaconState.ValidatorAtIndexReadOnly(idx)
-}

beacon-chain/core/gloas/pending_payment.go

@@ -1,76 +0,0 @@
-package gloas
-
-import (
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/pkg/errors"
-)
-
-// ProcessBuilderPendingPayments processes the builder pending payments from the previous epoch.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def process_builder_pending_payments(state: BeaconState) -> None:
-//
-//	quorum = get_builder_payment_quorum_threshold(state)
-//	for payment in state.builder_pending_payments[:SLOTS_PER_EPOCH]:
-//	    if payment.weight >= quorum:
-//	        state.builder_pending_withdrawals.append(payment.withdrawal)
-//
-//	old_payments = state.builder_pending_payments[SLOTS_PER_EPOCH:]
-//	new_payments = [BuilderPendingPayment() for _ in range(SLOTS_PER_EPOCH)]
-//	state.builder_pending_payments = old_payments + new_payments
-func ProcessBuilderPendingPayments(state state.BeaconState) error {
-	quorum, err := builderQuorumThreshold(state)
-	if err != nil {
-		return errors.Wrap(err, "could not compute builder payment quorum threshold")
-	}
-
-	payments, err := state.BuilderPendingPayments()
-	if err != nil {
-		return errors.Wrap(err, "could not get builder pending payments")
-	}
-
-	slotsPerEpoch := uint64(params.BeaconConfig().SlotsPerEpoch)
-	var withdrawals []*ethpb.BuilderPendingWithdrawal
-	for _, payment := range payments[:slotsPerEpoch] {
-		if quorum > payment.Weight {
-			continue
-		}
-		withdrawals = append(withdrawals, payment.Withdrawal)
-	}
-
-	if err := state.AppendBuilderPendingWithdrawals(withdrawals); err != nil {
-		return errors.Wrap(err, "could not append builder pending withdrawals")
-	}
-
-	if err := state.RotateBuilderPendingPayments(); err != nil {
-		return errors.Wrap(err, "could not rotate builder pending payments")
-	}
-
-	return nil
-}
-
-// builderQuorumThreshold calculates the quorum threshold for builder payments.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def get_builder_payment_quorum_threshold(state: BeaconState) -> uint64:
-//
-//	per_slot_balance = get_total_active_balance(state) // SLOTS_PER_EPOCH
-//	quorum = per_slot_balance * BUILDER_PAYMENT_THRESHOLD_NUMERATOR
-//	return uint64(quorum // BUILDER_PAYMENT_THRESHOLD_DENOMINATOR)
-func builderQuorumThreshold(state state.ReadOnlyBeaconState) (primitives.Gwei, error) {
-	activeBalance, err := helpers.TotalActiveBalance(state)
-	if err != nil {
-		return 0, errors.Wrap(err, "could not get total active balance")
-	}
-
-	cfg := params.BeaconConfig()
-	slotsPerEpoch := uint64(cfg.SlotsPerEpoch)
-	numerator := cfg.BuilderPaymentThresholdNumerator
-	denominator := cfg.BuilderPaymentThresholdDenominator
-
-	activeBalancePerSlot := activeBalance / slotsPerEpoch
-	quorum := (activeBalancePerSlot * numerator) / denominator
-	return primitives.Gwei(quorum), nil
-}

beacon-chain/core/gloas/pending_payment_test.go

@@ -1,119 +0,0 @@
-package gloas
-
-import (
-	"slices"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-)
-
-func TestBuilderQuorumThreshold(t *testing.T) {
-	helpers.ClearCache()
-	cfg := params.BeaconConfig()
-
-	validators := []*ethpb.Validator{
-		{EffectiveBalance: cfg.MaxEffectiveBalance, ActivationEpoch: 0, ExitEpoch: 1},
-		{EffectiveBalance: cfg.MaxEffectiveBalance, ActivationEpoch: 0, ExitEpoch: 1},
-	}
-	st, err := state_native.InitializeFromProtoUnsafeGloas(&ethpb.BeaconStateGloas{Validators: validators})
-	require.NoError(t, err)
-
-	got, err := builderQuorumThreshold(st)
-	require.NoError(t, err)
-
-	total := uint64(len(validators)) * cfg.MaxEffectiveBalance
-	perSlot := total / uint64(cfg.SlotsPerEpoch)
-	want := (perSlot * cfg.BuilderPaymentThresholdNumerator) / cfg.BuilderPaymentThresholdDenominator
-	require.Equal(t, primitives.Gwei(want), got)
-}
-
-func TestProcessBuilderPendingPayments(t *testing.T) {
-	helpers.ClearCache()
-	cfg := params.BeaconConfig()
-
-	buildPayments := func(weights ...primitives.Gwei) []*ethpb.BuilderPendingPayment {
-		p := make([]*ethpb.BuilderPendingPayment, 2*int(cfg.SlotsPerEpoch))
-		for i := range p {
-			p[i] = &ethpb.BuilderPendingPayment{
-				Withdrawal: &ethpb.BuilderPendingWithdrawal{FeeRecipient: make([]byte, 20)},
-			}
-		}
-		for i, w := range weights {
-			p[i].Weight = w
-			p[i].Withdrawal.Amount = 1
-		}
-		return p
-	}
-
-	validators := []*ethpb.Validator{
-		{EffectiveBalance: cfg.MaxEffectiveBalance, ActivationEpoch: 0, ExitEpoch: 1},
-		{EffectiveBalance: cfg.MaxEffectiveBalance, ActivationEpoch: 0, ExitEpoch: 1},
-	}
-	pbSt, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{Validators: validators})
-	require.NoError(t, err)
-
-	total := uint64(len(validators)) * cfg.MaxEffectiveBalance
-	perSlot := total / uint64(cfg.SlotsPerEpoch)
-	quorum := (perSlot * cfg.BuilderPaymentThresholdNumerator) / cfg.BuilderPaymentThresholdDenominator
-	slotsPerEpoch := int(cfg.SlotsPerEpoch)
-
-	t.Run("append qualifying withdrawals", func(t *testing.T) {
-		payments := buildPayments(primitives.Gwei(quorum+1), primitives.Gwei(quorum+2))
-		st := &testProcessState{BeaconState: pbSt, payments: payments}
-
-		require.NoError(t, ProcessBuilderPendingPayments(st))
-		require.Equal(t, 2, len(st.withdrawals))
-		require.Equal(t, payments[0].Withdrawal, st.withdrawals[0])
-		require.Equal(t, payments[1].Withdrawal, st.withdrawals[1])
-
-		require.Equal(t, 2*slotsPerEpoch, len(st.payments))
-		for i := slotsPerEpoch; i < 2*slotsPerEpoch; i++ {
-			require.Equal(t, primitives.Gwei(0), st.payments[i].Weight)
-			require.Equal(t, primitives.Gwei(0), st.payments[i].Withdrawal.Amount)
-			require.Equal(t, 20, len(st.payments[i].Withdrawal.FeeRecipient))
-		}
-	})
-
-	t.Run("no withdrawals when below quorum", func(t *testing.T) {
-		payments := buildPayments(primitives.Gwei(quorum - 1))
-		st := &testProcessState{BeaconState: pbSt, payments: payments}
-
-		require.NoError(t, ProcessBuilderPendingPayments(st))
-		require.Equal(t, 0, len(st.withdrawals))
-	})
-}
-
-type testProcessState struct {
-	state.BeaconState
-	payments    []*ethpb.BuilderPendingPayment
-	withdrawals []*ethpb.BuilderPendingWithdrawal
-}
-
-func (t *testProcessState) BuilderPendingPayments() ([]*ethpb.BuilderPendingPayment, error) {
-	return t.payments, nil
-}
-
-func (t *testProcessState) AppendBuilderPendingWithdrawals(withdrawals []*ethpb.BuilderPendingWithdrawal) error {
-	t.withdrawals = append(t.withdrawals, withdrawals...)
-	return nil
-}
-
-func (t *testProcessState) RotateBuilderPendingPayments() error {
-	slotsPerEpoch := int(params.BeaconConfig().SlotsPerEpoch)
-	rotated := slices.Clone(t.payments[slotsPerEpoch:])
-	for range slotsPerEpoch {
-		rotated = append(rotated, &ethpb.BuilderPendingPayment{
-			Withdrawal: &ethpb.BuilderPendingWithdrawal{
-				FeeRecipient: make([]byte, 20),
-			},
-		})
-	}
-	t.payments = rotated
-	return nil
-}

beacon-chain/core/gloas/proposer_slashing.go

@@ -1,43 +0,0 @@
-package gloas
-
-import (
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/time"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-	"github.com/pkg/errors"
-)
-
-// RemoveBuilderPendingPayment removes the pending builder payment for the proposal slot.
-// Spec v1.7.0 (pseudocode):
-//
-//	slot = header_1.slot
-//	proposal_epoch = compute_epoch_at_slot(slot)
-//	if proposal_epoch == get_current_epoch(state):
-//	  payment_index = SLOTS_PER_EPOCH + slot % SLOTS_PER_EPOCH
-//	  state.builder_pending_payments[payment_index] = BuilderPendingPayment()
-//	elif proposal_epoch == get_previous_epoch(state):
-//	  payment_index = slot % SLOTS_PER_EPOCH
-//	  state.builder_pending_payments[payment_index] = BuilderPendingPayment()
-func RemoveBuilderPendingPayment(st state.BeaconState, header *eth.BeaconBlockHeader) error {
-	proposalEpoch := slots.ToEpoch(header.Slot)
-	currentEpoch := time.CurrentEpoch(st)
-	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
-
-	var paymentIndex primitives.Slot
-	if proposalEpoch == currentEpoch {
-		paymentIndex = slotsPerEpoch + header.Slot%slotsPerEpoch
-	} else if proposalEpoch+1 == currentEpoch {
-		paymentIndex = header.Slot % slotsPerEpoch
-	} else {
-		return nil
-	}
-
-	if err := st.ClearBuilderPendingPayment(paymentIndex); err != nil {
-		return errors.Wrap(err, "could not clear builder pending payment")
-	}
-
-	return nil
-}

beacon-chain/core/gloas/proposer_slashing_test.go

@@ -1,112 +0,0 @@
-package gloas
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-)
-
-func TestRemoveBuilderPendingPayment_CurrentEpoch(t *testing.T) {
-	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
-	stateSlot := slotsPerEpoch*2 + 1
-	headerSlot := slotsPerEpoch * 2
-
-	st := newGloasStateWithPayments(t, stateSlot)
-	paymentIndex := int(slotsPerEpoch + headerSlot%slotsPerEpoch)
-
-	setPendingPayment(t, st, paymentIndex, 123)
-
-	err := RemoveBuilderPendingPayment(st, &eth.BeaconBlockHeader{Slot: headerSlot})
-	require.NoError(t, err)
-
-	got := getPendingPayment(t, st, paymentIndex)
-	require.NotNil(t, got.Withdrawal)
-	require.DeepEqual(t, make([]byte, 20), got.Withdrawal.FeeRecipient)
-	require.Equal(t, uint64(0), uint64(got.Withdrawal.Amount))
-}
-
-func TestRemoveBuilderPendingPayment_PreviousEpoch(t *testing.T) {
-	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
-	stateSlot := slotsPerEpoch*2 + 1
-	headerSlot := slotsPerEpoch + 7
-
-	st := newGloasStateWithPayments(t, stateSlot)
-	paymentIndex := int(headerSlot % slotsPerEpoch)
-
-	setPendingPayment(t, st, paymentIndex, 456)
-
-	err := RemoveBuilderPendingPayment(st, &eth.BeaconBlockHeader{Slot: headerSlot})
-	require.NoError(t, err)
-
-	got := getPendingPayment(t, st, paymentIndex)
-	require.NotNil(t, got.Withdrawal)
-	require.DeepEqual(t, make([]byte, 20), got.Withdrawal.FeeRecipient)
-	require.Equal(t, uint64(0), uint64(got.Withdrawal.Amount))
-}
-
-func TestRemoveBuilderPendingPayment_OlderThanTwoEpoch(t *testing.T) {
-	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
-	stateSlot := slotsPerEpoch*4 + 1 // current epoch far ahead
-	headerSlot := slotsPerEpoch * 2  // two epochs behind
-
-	st := newGloasStateWithPayments(t, stateSlot)
-	paymentIndex := int(headerSlot % slotsPerEpoch)
-
-	original := getPendingPayment(t, st, paymentIndex)
-
-	err := RemoveBuilderPendingPayment(st, &eth.BeaconBlockHeader{Slot: headerSlot})
-	require.NoError(t, err)
-
-	after := getPendingPayment(t, st, paymentIndex)
-	require.DeepEqual(t, original.Withdrawal.FeeRecipient, after.Withdrawal.FeeRecipient)
-	require.Equal(t, original.Withdrawal.Amount, after.Withdrawal.Amount)
-}
-
-func newGloasStateWithPayments(t *testing.T, slot primitives.Slot) state.BeaconState {
-	t.Helper()
-
-	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
-	paymentCount := int(slotsPerEpoch * 2)
-	payments := make([]*eth.BuilderPendingPayment, paymentCount)
-	for i := range payments {
-		payments[i] = &eth.BuilderPendingPayment{
-			Withdrawal: &eth.BuilderPendingWithdrawal{
-				FeeRecipient: bytes.Repeat([]byte{0x01}, 20),
-				Amount:       1,
-			},
-		}
-	}
-
-	st, err := state_native.InitializeFromProtoUnsafeGloas(&eth.BeaconStateGloas{
-		Slot:                   slot,
-		BuilderPendingPayments: payments,
-	})
-	require.NoError(t, err)
-	return st
-}
-
-func setPendingPayment(t *testing.T, st state.BeaconState, index int, amount uint64) {
-	t.Helper()
-
-	payment := &eth.BuilderPendingPayment{
-		Withdrawal: &eth.BuilderPendingWithdrawal{
-			FeeRecipient: bytes.Repeat([]byte{0x02}, 20),
-			Amount:       primitives.Gwei(amount),
-		},
-	}
-	require.NoError(t, st.SetBuilderPendingPayment(primitives.Slot(index), payment))
-}
-
-func getPendingPayment(t *testing.T, st state.BeaconState, index int) *eth.BuilderPendingPayment {
-	t.Helper()
-
-	stateProto := st.ToProtoUnsafe().(*eth.BeaconStateGloas)
-
-	return stateProto.BuilderPendingPayments[index]
-}

beacon-chain/core/helpers/BUILD.bazel

@@ -6,7 +6,6 @@ go_library(
         "attestation.go",
         "beacon_committee.go",
         "block.go",
-        "deposit.go",
         "genesis.go",
         "legacy.go",
         "log.go",
@@ -24,7 +23,6 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//beacon-chain/cache:go_default_library",
-        "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/forkchoice/types:go_default_library",
         "//beacon-chain/state:go_default_library",
@@ -33,7 +31,6 @@ go_library(
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
         "//container/trie:go_default_library",
-        "//contracts/deposit:go_default_library",
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
@@ -57,7 +54,6 @@ go_test(
         "attestation_test.go",
         "beacon_committee_test.go",
         "block_test.go",
-        "deposit_test.go",
         "legacy_test.go",
         "private_access_fuzz_noop_test.go",  # keep
         "private_access_test.go",
@@ -76,7 +72,6 @@ go_test(
     tags = ["CI_race_detection"],
     deps = [
         "//beacon-chain/cache:go_default_library",
-        "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/forkchoice/types:go_default_library",
         "//beacon-chain/state:go_default_library",
@@ -85,8 +80,6 @@ go_test(
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
-        "//container/trie:go_default_library",
-        "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",

beacon-chain/core/requests/BUILD.bazel

@@ -1,60 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "consolidations.go",
-        "deposits.go",
-        "log.go",
-        "withdrawals.go",
-    ],
-    importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/core/requests",
-    visibility = ["//visibility:public"],
-    deps = [
-        "//beacon-chain/core/helpers:go_default_library",
-        "//beacon-chain/core/validators:go_default_library",
-        "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/state-native:go_default_library",
-        "//config/params:go_default_library",
-        "//consensus-types/primitives:go_default_library",
-        "//crypto/bls/common:go_default_library",
-        "//encoding/bytesutil:go_default_library",
-        "//math:go_default_library",
-        "//monitoring/tracing/trace:go_default_library",
-        "//proto/engine/v1:go_default_library",
-        "//proto/prysm/v1alpha1:go_default_library",
-        "//runtime/version:go_default_library",
-        "//time/slots:go_default_library",
-        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
-        "@com_github_ethereum_go_ethereum//common/math:go_default_library",
-        "@com_github_pkg_errors//:go_default_library",
-        "@com_github_sirupsen_logrus//:go_default_library",
-    ],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = [
-        "consolidations_test.go",
-        "deposits_test.go",
-        "withdrawals_test.go",
-    ],
-    deps = [
-        ":go_default_library",
-        "//beacon-chain/core/signing:go_default_library",
-        "//beacon-chain/state:go_default_library",
-        "//beacon-chain/state/state-native:go_default_library",
-        "//config/params:go_default_library",
-        "//consensus-types/primitives:go_default_library",
-        "//crypto/bls:go_default_library",
-        "//encoding/bytesutil:go_default_library",
-        "//proto/engine/v1:go_default_library",
-        "//proto/prysm/v1alpha1:go_default_library",
-        "//testing/assert:go_default_library",
-        "//testing/require:go_default_library",
-        "//testing/util:go_default_library",
-        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
-        "@com_github_sirupsen_logrus//:go_default_library",
-        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
-    ],
-)

beacon-chain/core/requests/consolidations.go

@@ -1,365 +0,0 @@
-package requests
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls/common"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	prysmMath "github.com/OffchainLabs/prysm/v7/math"
-	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/time/slots"
-	"github.com/ethereum/go-ethereum/common/math"
-	"github.com/pkg/errors"
-)
-
-// ProcessConsolidationRequests implements the spec definition below. This method makes mutating
-// calls to the beacon state.
-//
-//	def process_consolidation_request(
-//	    state: BeaconState,
-//	    consolidation_request: ConsolidationRequest
-//	) -> None:
-//	    if is_valid_switch_to_compounding_request(state, consolidation_request):
-//	        validator_pubkeys = [v.pubkey for v in state.validators]
-//	        request_source_pubkey = consolidation_request.source_pubkey
-//	        source_index = ValidatorIndex(validator_pubkeys.index(request_source_pubkey))
-//	        switch_to_compounding_validator(state, source_index)
-//	        return
-//
-//	    # Verify that source != target, so a consolidation cannot be used as an exit.
-//	    if consolidation_request.source_pubkey == consolidation_request.target_pubkey:
-//	        return
-//	    # If the pending consolidations queue is full, consolidation requests are ignored
-//	    if len(state.pending_consolidations) == PENDING_CONSOLIDATIONS_LIMIT:
-//	        return
-//	    # If there is too little available consolidation churn limit, consolidation requests are ignored
-//	    if get_consolidation_churn_limit(state) <= MIN_ACTIVATION_BALANCE:
-//	        return
-//
-//	    validator_pubkeys = [v.pubkey for v in state.validators]
-//	    # Verify pubkeys exists
-//	    request_source_pubkey = consolidation_request.source_pubkey
-//	    request_target_pubkey = consolidation_request.target_pubkey
-//	    if request_source_pubkey not in validator_pubkeys:
-//	        return
-//	    if request_target_pubkey not in validator_pubkeys:
-//	        return
-//	    source_index = ValidatorIndex(validator_pubkeys.index(request_source_pubkey))
-//	    target_index = ValidatorIndex(validator_pubkeys.index(request_target_pubkey))
-//	    source_validator = state.validators[source_index]
-//	    target_validator = state.validators[target_index]
-//
-//	    # Verify source withdrawal credentials
-//	    has_correct_credential = has_execution_withdrawal_credential(source_validator)
-//	    is_correct_source_address = (
-//	        source_validator.withdrawal_credentials[12:] == consolidation_request.source_address
-//	    )
-//	    if not (has_correct_credential and is_correct_source_address):
-//	        return
-//
-//	    # Verify that target has compounding withdrawal credentials
-//	    if not has_compounding_withdrawal_credential(target_validator):
-//	        return
-//
-//	    # Verify the source and the target are active
-//	    current_epoch = get_current_epoch(state)
-//	    if not is_active_validator(source_validator, current_epoch):
-//	        return
-//	    if not is_active_validator(target_validator, current_epoch):
-//	        return
-//	    # Verify exits for source and target have not been initiated
-//	    if source_validator.exit_epoch != FAR_FUTURE_EPOCH:
-//	        return
-//	    if target_validator.exit_epoch != FAR_FUTURE_EPOCH:
-//	        return
-//
-//	    # Verify the source has been active long enough
-//	    if current_epoch < source_validator.activation_epoch + SHARD_COMMITTEE_PERIOD:
-//	        return
-//
-//	    # Verify the source has no pending withdrawals in the queue
-//	    if get_pending_balance_to_withdraw(state, source_index) > 0:
-//	        return
-//	    # Initiate source validator exit and append pending consolidation
-//	    source_validator.exit_epoch = compute_consolidation_epoch_and_update_churn(
-//	        state, source_validator.effective_balance
-//	    )
-//	    source_validator.withdrawable_epoch = Epoch(
-//	        source_validator.exit_epoch + MIN_VALIDATOR_WITHDRAWABILITY_DELAY
-//	    )
-//	    state.pending_consolidations.append(PendingConsolidation(
-//	        source_index=source_index,
-//	        target_index=target_index
-//	    ))
-func ProcessConsolidationRequests(ctx context.Context, st state.BeaconState, reqs []*enginev1.ConsolidationRequest) error {
-	ctx, span := trace.StartSpan(ctx, "requests.ProcessConsolidationRequests")
-	defer span.End()
-
-	if len(reqs) == 0 || st == nil {
-		return nil
-	}
-	curEpoch := slots.ToEpoch(st.Slot())
-	ffe := params.BeaconConfig().FarFutureEpoch
-	minValWithdrawDelay := params.BeaconConfig().MinValidatorWithdrawabilityDelay
-	pcLimit := params.BeaconConfig().PendingConsolidationsLimit
-
-	for _, cr := range reqs {
-		if cr == nil {
-			return errors.New("nil consolidation request")
-		}
-		if ctx.Err() != nil {
-			return fmt.Errorf("cannot process consolidation requests: %w", ctx.Err())
-		}
-
-		if isValidSwitchToCompoundingRequest(st, cr) {
-			srcIdx, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(cr.SourcePubkey))
-			if !ok {
-				log.Error("Failed to find source validator index")
-				continue
-			}
-			if err := switchToCompoundingValidator(st, srcIdx); err != nil {
-				log.WithError(err).Error("Failed to switch to compounding validator")
-			}
-			continue
-		}
-
-		sourcePubkey := bytesutil.ToBytes48(cr.SourcePubkey)
-		targetPubkey := bytesutil.ToBytes48(cr.TargetPubkey)
-		if sourcePubkey == targetPubkey {
-			continue
-		}
-
-		if npc, err := st.NumPendingConsolidations(); err != nil {
-			return fmt.Errorf("failed to fetch number of pending consolidations: %w", err) // This should never happen.
-		} else if npc >= pcLimit {
-			continue
-		}
-
-		activeBal, err := helpers.TotalActiveBalance(st)
-		if err != nil {
-			return err
-		}
-		churnLimit := helpers.ConsolidationChurnLimit(primitives.Gwei(activeBal))
-		if churnLimit <= primitives.Gwei(params.BeaconConfig().MinActivationBalance) {
-			continue
-		}
-
-		srcIdx, ok := st.ValidatorIndexByPubkey(sourcePubkey)
-		if !ok {
-			continue
-		}
-		tgtIdx, ok := st.ValidatorIndexByPubkey(targetPubkey)
-		if !ok {
-			continue
-		}
-
-		srcV, err := st.ValidatorAtIndex(srcIdx)
-		if err != nil {
-			return fmt.Errorf("failed to fetch source validator: %w", err) // This should never happen.
-		}
-
-		roSrcV, err := state_native.NewValidator(srcV)
-		if err != nil {
-			return err
-		}
-
-		tgtV, err := st.ValidatorAtIndexReadOnly(tgtIdx)
-		if err != nil {
-			return fmt.Errorf("failed to fetch target validator: %w", err) // This should never happen.
-		}
-
-		// Verify source withdrawal credentials.
-		if !roSrcV.HasExecutionWithdrawalCredentials() {
-			continue
-		}
-		// Confirm source_validator.withdrawal_credentials[12:] == consolidation_request.source_address.
-		if len(srcV.WithdrawalCredentials) != 32 || len(cr.SourceAddress) != 20 || !bytes.HasSuffix(srcV.WithdrawalCredentials, cr.SourceAddress) {
-			continue
-		}
-
-		// Target validator must have their withdrawal credentials set appropriately.
-		if !tgtV.HasCompoundingWithdrawalCredentials() {
-			continue
-		}
-
-		// Both validators must be active.
-		if !helpers.IsActiveValidator(srcV, curEpoch) || !helpers.IsActiveValidatorUsingTrie(tgtV, curEpoch) {
-			continue
-		}
-		// Neither validator is exiting.
-		if srcV.ExitEpoch != ffe || tgtV.ExitEpoch() != ffe {
-			continue
-		}
-
-		e, overflow := math.SafeAdd(uint64(srcV.ActivationEpoch), uint64(params.BeaconConfig().ShardCommitteePeriod))
-		if overflow {
-			log.Error("Overflow when adding activation epoch and shard committee period")
-			continue
-		}
-		if uint64(curEpoch) < e {
-			continue
-		}
-
-		hasBal, err := st.HasPendingBalanceToWithdraw(srcIdx)
-		if err != nil {
-			log.WithError(err).Error("Failed to fetch pending balance to withdraw")
-			continue
-		}
-		if hasBal {
-			continue
-		}
-
-		exitEpoch, err := computeConsolidationEpochAndUpdateChurn(st, primitives.Gwei(srcV.EffectiveBalance))
-		if err != nil {
-			log.WithError(err).Error("Failed to compute consolidation epoch")
-			continue
-		}
-		srcV.ExitEpoch = exitEpoch
-		srcV.WithdrawableEpoch = exitEpoch + minValWithdrawDelay
-		if err := st.UpdateValidatorAtIndex(srcIdx, srcV); err != nil {
-			return fmt.Errorf("failed to update validator: %w", err) // This should never happen.
-		}
-
-		if err := st.AppendPendingConsolidation(&eth.PendingConsolidation{SourceIndex: srcIdx, TargetIndex: tgtIdx}); err != nil {
-			return fmt.Errorf("failed to append pending consolidation: %w", err) // This should never happen.
-		}
-	}
-
-	return nil
-}
-
-func isValidSwitchToCompoundingRequest(st state.BeaconState, req *enginev1.ConsolidationRequest) bool {
-	if req.SourcePubkey == nil || req.TargetPubkey == nil {
-		return false
-	}
-
-	if !bytes.Equal(req.SourcePubkey, req.TargetPubkey) {
-		return false
-	}
-
-	srcIdx, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(req.SourcePubkey))
-	if !ok {
-		return false
-	}
-	srcV, err := st.ValidatorAtIndexReadOnly(srcIdx)
-	if err != nil {
-		return false
-	}
-
-	sourceAddress := req.SourceAddress
-	withdrawalCreds := srcV.GetWithdrawalCredentials()
-	if len(withdrawalCreds) != 32 || len(sourceAddress) != 20 || !bytes.HasSuffix(withdrawalCreds, sourceAddress) {
-		return false
-	}
-
-	if !srcV.HasETH1WithdrawalCredentials() {
-		return false
-	}
-
-	curEpoch := slots.ToEpoch(st.Slot())
-	if !helpers.IsActiveValidatorUsingTrie(srcV, curEpoch) {
-		return false
-	}
-
-	if srcV.ExitEpoch() != params.BeaconConfig().FarFutureEpoch {
-		return false
-	}
-
-	return true
-}
-
-func switchToCompoundingValidator(st state.BeaconState, idx primitives.ValidatorIndex) error {
-	v, err := st.ValidatorAtIndex(idx)
-	if err != nil {
-		return err
-	}
-	if len(v.WithdrawalCredentials) == 0 {
-		return errors.New("validator has no withdrawal credentials")
-	}
-
-	v.WithdrawalCredentials[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
-	if err := st.UpdateValidatorAtIndex(idx, v); err != nil {
-		return err
-	}
-	return queueExcessActiveBalance(st, idx)
-}
-
-func queueExcessActiveBalance(st state.BeaconState, idx primitives.ValidatorIndex) error {
-	bal, err := st.BalanceAtIndex(idx)
-	if err != nil {
-		return err
-	}
-
-	if bal > params.BeaconConfig().MinActivationBalance {
-		if err := st.UpdateBalancesAtIndex(idx, params.BeaconConfig().MinActivationBalance); err != nil {
-			return err
-		}
-		excessBalance := bal - params.BeaconConfig().MinActivationBalance
-		val, err := st.ValidatorAtIndexReadOnly(idx)
-		if err != nil {
-			return err
-		}
-		pk := val.PublicKey()
-		return st.AppendPendingDeposit(&eth.PendingDeposit{
-			PublicKey:             pk[:],
-			WithdrawalCredentials: val.GetWithdrawalCredentials(),
-			Amount:                excessBalance,
-			Signature:             common.InfiniteSignature[:],
-			Slot:                  params.BeaconConfig().GenesisSlot,
-		})
-	}
-	return nil
-}
-
-func computeConsolidationEpochAndUpdateChurn(st state.BeaconState, consolidationBalance primitives.Gwei) (primitives.Epoch, error) {
-	earliestEpoch, err := st.EarliestConsolidationEpoch()
-	if err != nil {
-		return 0, err
-	}
-	earliestConsolidationEpoch := max(earliestEpoch, helpers.ActivationExitEpoch(slots.ToEpoch(st.Slot())))
-
-	activeBal, err := helpers.TotalActiveBalance(st)
-	if err != nil {
-		return 0, err
-	}
-	perEpochConsolidationChurn := helpers.ConsolidationChurnLimit(primitives.Gwei(activeBal))
-
-	var consolidationBalanceToConsume primitives.Gwei
-	if earliestEpoch < earliestConsolidationEpoch {
-		consolidationBalanceToConsume = perEpochConsolidationChurn
-	} else {
-		consolidationBalanceToConsume, err = st.ConsolidationBalanceToConsume()
-		if err != nil {
-			return 0, err
-		}
-	}
-
-	if consolidationBalance > consolidationBalanceToConsume {
-		balanceToProcess := consolidationBalance - consolidationBalanceToConsume
-		additionalEpochs, err := prysmMath.Div64(uint64(balanceToProcess-1), uint64(perEpochConsolidationChurn))
-		if err != nil {
-			return 0, err
-		}
-		additionalEpochs++
-		earliestConsolidationEpoch += primitives.Epoch(additionalEpochs)
-		consolidationBalanceToConsume += primitives.Gwei(additionalEpochs) * perEpochConsolidationChurn
-	}
-
-	if err := st.SetConsolidationBalanceToConsume(consolidationBalanceToConsume - consolidationBalance); err != nil {
-		return 0, err
-	}
-	if err := st.SetEarliestConsolidationEpoch(earliestConsolidationEpoch); err != nil {
-		return 0, err
-	}
-
-	return earliestConsolidationEpoch, nil
-}

beacon-chain/core/requests/consolidations_test.go

@@ -1,316 +0,0 @@
-package requests_test
-
-import (
-	"context"
-	"fmt"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/requests"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-)
-
-func createValidatorsWithTotalActiveBalance(totalBal primitives.Gwei) []*eth.Validator {
-	num := totalBal / primitives.Gwei(params.BeaconConfig().MinActivationBalance)
-	vals := make([]*eth.Validator, num)
-	for i := range vals {
-		wd := make([]byte, 32)
-		wd[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
-		wd[31] = byte(i)
-
-		vals[i] = &eth.Validator{
-			ActivationEpoch:       primitives.Epoch(0),
-			EffectiveBalance:      params.BeaconConfig().MinActivationBalance,
-			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
-			PublicKey:             fmt.Appendf(nil, "val_%d", i),
-			WithdrawableEpoch:     params.BeaconConfig().FarFutureEpoch,
-			WithdrawalCredentials: wd,
-		}
-	}
-	if totalBal%primitives.Gwei(params.BeaconConfig().MinActivationBalance) != 0 {
-		vals = append(vals, &eth.Validator{
-			ActivationEpoch:  primitives.Epoch(0),
-			ExitEpoch:        params.BeaconConfig().FarFutureEpoch,
-			EffectiveBalance: uint64(totalBal) % params.BeaconConfig().MinActivationBalance,
-		})
-	}
-	return vals
-}
-
-func TestProcessConsolidationRequests(t *testing.T) {
-	tests := []struct {
-		name     string
-		state    state.BeaconState
-		reqs     []*enginev1.ConsolidationRequest
-		validate func(*testing.T, state.BeaconState)
-		wantErr  bool
-	}{
-		{
-			name: "nil request",
-			state: func() state.BeaconState {
-				st := &eth.BeaconStateElectra{}
-				s, err := state_native.InitializeFromProtoElectra(st)
-				require.NoError(t, err)
-				return s
-			}(),
-			reqs: []*enginev1.ConsolidationRequest{nil},
-			validate: func(t *testing.T, st state.BeaconState) {
-				require.DeepEqual(t, st, st)
-			},
-			wantErr: true,
-		},
-		{
-			name: "one valid request",
-			state: func() state.BeaconState {
-				st := &eth.BeaconStateElectra{
-					Slot:       params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
-					Validators: createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
-				}
-				// Validator scenario setup. See comments in reqs section.
-				st.Validators[3].WithdrawalCredentials = bytesutil.Bytes32(0)
-				st.Validators[8].WithdrawalCredentials = bytesutil.Bytes32(1)
-				st.Validators[9].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
-				st.Validators[12].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
-				st.Validators[13].ExitEpoch = 10
-				st.Validators[16].ExitEpoch = 10
-				st.PendingPartialWithdrawals = []*eth.PendingPartialWithdrawal{
-					{
-						Index:  17,
-						Amount: 100,
-					},
-				}
-				s, err := state_native.InitializeFromProtoElectra(st)
-				require.NoError(t, err)
-				return s
-			}(),
-			reqs: []*enginev1.ConsolidationRequest{
-				// Source doesn't have withdrawal credentials.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
-					SourcePubkey:  []byte("val_3"),
-					TargetPubkey:  []byte("val_4"),
-				},
-				// Source withdrawal credentials don't match the consolidation address.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)), // Should be 5
-					SourcePubkey:  []byte("val_5"),
-					TargetPubkey:  []byte("val_6"),
-				},
-				// Target does not have their withdrawal credentials set appropriately. (Using eth1 address prefix)
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(7)),
-					SourcePubkey:  []byte("val_7"),
-					TargetPubkey:  []byte("val_8"),
-				},
-				// Source is inactive.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(9)),
-					SourcePubkey:  []byte("val_9"),
-					TargetPubkey:  []byte("val_10"),
-				},
-				// Target is inactive.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(11)),
-					SourcePubkey:  []byte("val_11"),
-					TargetPubkey:  []byte("val_12"),
-				},
-				// Source is exiting.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(13)),
-					SourcePubkey:  []byte("val_13"),
-					TargetPubkey:  []byte("val_14"),
-				},
-				// Target is exiting.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(15)),
-					SourcePubkey:  []byte("val_15"),
-					TargetPubkey:  []byte("val_16"),
-				},
-				// Source doesn't exist
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
-					SourcePubkey:  []byte("INVALID"),
-					TargetPubkey:  []byte("val_0"),
-				},
-				// Target doesn't exist
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
-					SourcePubkey:  []byte("val_0"),
-					TargetPubkey:  []byte("INVALID"),
-				},
-				// Source == target
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
-					SourcePubkey:  []byte("val_0"),
-					TargetPubkey:  []byte("val_0"),
-				},
-				// Has pending partial withdrawal
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(0)),
-					SourcePubkey:  []byte("val_17"),
-					TargetPubkey:  []byte("val_1"),
-				},
-				// Valid consolidation request. This should be last to ensure invalid requests do
-				// not end the processing early.
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
-					SourcePubkey:  []byte("val_1"),
-					TargetPubkey:  []byte("val_2"),
-				},
-			},
-			validate: func(t *testing.T, st state.BeaconState) {
-				// Verify a pending consolidation is created.
-				numPC, err := st.NumPendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, uint64(1), numPC)
-				pcs, err := st.PendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, primitives.ValidatorIndex(1), pcs[0].SourceIndex)
-				require.Equal(t, primitives.ValidatorIndex(2), pcs[0].TargetIndex)
-
-				// Verify the source validator is exiting.
-				src, err := st.ValidatorAtIndex(1)
-				require.NoError(t, err)
-				require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch not updated")
-				require.Equal(t, params.BeaconConfig().MinValidatorWithdrawabilityDelay, src.WithdrawableEpoch-src.ExitEpoch, "source validator withdrawable epoch not set correctly")
-			},
-			wantErr: false,
-		},
-		{
-			name: "pending consolidations limit reached",
-			state: func() state.BeaconState {
-				st := &eth.BeaconStateElectra{
-					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
-					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit),
-				}
-				s, err := state_native.InitializeFromProtoElectra(st)
-				require.NoError(t, err)
-				return s
-			}(),
-			reqs: []*enginev1.ConsolidationRequest{
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
-					SourcePubkey:  []byte("val_1"),
-					TargetPubkey:  []byte("val_2"),
-				},
-			},
-			validate: func(t *testing.T, st state.BeaconState) {
-				// Verify no pending consolidation is created.
-				numPC, err := st.NumPendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
-
-				// Verify the source validator is not exiting.
-				src, err := st.ValidatorAtIndex(1)
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch should not be updated")
-				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.WithdrawableEpoch, "source validator withdrawable epoch should not be updated")
-			},
-			wantErr: false,
-		},
-		{
-			name: "pending consolidations limit reached during processing",
-			state: func() state.BeaconState {
-				st := &eth.BeaconStateElectra{
-					Slot:                  params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
-					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
-					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit-1),
-				}
-				s, err := state_native.InitializeFromProtoElectra(st)
-				require.NoError(t, err)
-				return s
-			}(),
-			reqs: []*enginev1.ConsolidationRequest{
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
-					SourcePubkey:  []byte("val_1"),
-					TargetPubkey:  []byte("val_2"),
-				},
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(3)),
-					SourcePubkey:  []byte("val_3"),
-					TargetPubkey:  []byte("val_4"),
-				},
-			},
-			validate: func(t *testing.T, st state.BeaconState) {
-				// Verify a pending consolidation is created.
-				numPC, err := st.NumPendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
-
-				// The first consolidation was appended.
-				pcs, err := st.PendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, primitives.ValidatorIndex(1), pcs[params.BeaconConfig().PendingConsolidationsLimit-1].SourceIndex)
-				require.Equal(t, primitives.ValidatorIndex(2), pcs[params.BeaconConfig().PendingConsolidationsLimit-1].TargetIndex)
-
-				// Verify the second source validator is not exiting.
-				src, err := st.ValidatorAtIndex(3)
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.ExitEpoch, "source validator exit epoch should not be updated")
-				require.Equal(t, params.BeaconConfig().FarFutureEpoch, src.WithdrawableEpoch, "source validator withdrawable epoch should not be updated")
-			},
-			wantErr: false,
-		},
-		{
-			name: "pending consolidations limit reached and compounded consolidation after",
-			state: func() state.BeaconState {
-				st := &eth.BeaconStateElectra{
-					Slot:                  params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().ShardCommitteePeriod)),
-					Validators:            createValidatorsWithTotalActiveBalance(32000000000000000), // 32M ETH
-					PendingConsolidations: make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit),
-				}
-				// To allow compounding consolidation requests.
-				st.Validators[3].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
-				s, err := state_native.InitializeFromProtoElectra(st)
-				require.NoError(t, err)
-				return s
-			}(),
-			reqs: []*enginev1.ConsolidationRequest{
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(1)),
-					SourcePubkey:  []byte("val_1"),
-					TargetPubkey:  []byte("val_2"),
-				},
-				{
-					SourceAddress: append(bytesutil.PadTo(nil, 19), byte(3)),
-					SourcePubkey:  []byte("val_3"),
-					TargetPubkey:  []byte("val_3"),
-				},
-			},
-			validate: func(t *testing.T, st state.BeaconState) {
-				// Verify a pending consolidation is created.
-				numPC, err := st.NumPendingConsolidations()
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().PendingConsolidationsLimit, numPC)
-
-				// Verify that the last consolidation was included
-				src, err := st.ValidatorAtIndex(3)
-				require.NoError(t, err)
-				require.Equal(t, params.BeaconConfig().CompoundingWithdrawalPrefixByte, src.WithdrawalCredentials[0], "source validator was not compounded")
-			},
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			err := requests.ProcessConsolidationRequests(context.TODO(), tt.state, tt.reqs)
-			if (err != nil) != tt.wantErr {
-				t.Errorf("ProcessWithdrawalRequests() error = %v, wantErr %v", err, tt.wantErr)
-				return
-			}
-			if !tt.wantErr {
-				require.NoError(t, err)
-			}
-			if tt.validate != nil {
-				tt.validate(t, tt.state)
-			}
-		})
-	}
-}

beacon-chain/core/requests/deposits.go

@@ -1,73 +0,0 @@
-package requests
-
-import (
-	"context"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/pkg/errors"
-)
-
-// ProcessDepositRequests processes execution layer deposits requests.
-func ProcessDepositRequests(ctx context.Context, beaconState state.BeaconState, reqs []*enginev1.DepositRequest) (state.BeaconState, error) {
-	_, span := trace.StartSpan(ctx, "requests.ProcessDepositRequests")
-	defer span.End()
-
-	if len(reqs) == 0 {
-		return beaconState, nil
-	}
-
-	var err error
-	for _, req := range reqs {
-		beaconState, err = processDepositRequest(beaconState, req)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not apply deposit request")
-		}
-	}
-	return beaconState, nil
-}
-
-// processDepositRequest processes the specific deposit request
-//
-// def process_deposit_request(state: BeaconState, deposit_request: DepositRequest) -> None:
-//
-//	# Set deposit request start index
-//	if state.deposit_requests_start_index == UNSET_DEPOSIT_REQUESTS_START_INDEX:
-//	    state.deposit_requests_start_index = deposit_request.index
-//
-//	# Create pending deposit
-//	state.pending_deposits.append(PendingDeposit(
-//	    pubkey=deposit_request.pubkey,
-//	    withdrawal_credentials=deposit_request.withdrawal_credentials,
-//	    amount=deposit_request.amount,
-//	    signature=deposit_request.signature,
-//	    slot=state.slot,
-//	))
-func processDepositRequest(beaconState state.BeaconState, req *enginev1.DepositRequest) (state.BeaconState, error) {
-	requestsStartIndex, err := beaconState.DepositRequestsStartIndex()
-	if err != nil {
-		return nil, errors.Wrap(err, "could not get deposit requests start index")
-	}
-	if req == nil {
-		return nil, errors.New("nil deposit request")
-	}
-	if requestsStartIndex == params.BeaconConfig().UnsetDepositRequestsStartIndex {
-		if err := beaconState.SetDepositRequestsStartIndex(req.Index); err != nil {
-			return nil, errors.Wrap(err, "could not set deposit requests start index")
-		}
-	}
-	if err := beaconState.AppendPendingDeposit(&ethpb.PendingDeposit{
-		PublicKey:             bytesutil.SafeCopyBytes(req.Pubkey),
-		WithdrawalCredentials: bytesutil.SafeCopyBytes(req.WithdrawalCredentials),
-		Amount:                req.Amount,
-		Signature:             bytesutil.SafeCopyBytes(req.Signature),
-		Slot:                  beaconState.Slot(),
-	}); err != nil {
-		return nil, errors.Wrap(err, "could not append deposit request")
-	}
-	return beaconState, nil
-}

beacon-chain/core/requests/deposits_test.go

@@ -1,70 +0,0 @@
-package requests_test
-
-import (
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/requests"
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/crypto/bls"
-	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-	"github.com/OffchainLabs/prysm/v7/testing/util"
-)
-
-func TestProcessDepositRequests(t *testing.T) {
-	st, _ := util.DeterministicGenesisStateElectra(t, 1)
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	require.NoError(t, st.SetDepositRequestsStartIndex(1))
-
-	t.Run("empty requests continues", func(t *testing.T) {
-		newSt, err := requests.ProcessDepositRequests(t.Context(), st, []*enginev1.DepositRequest{})
-		require.NoError(t, err)
-		require.DeepEqual(t, newSt, st)
-	})
-	t.Run("nil request errors", func(t *testing.T) {
-		_, err = requests.ProcessDepositRequests(t.Context(), st, []*enginev1.DepositRequest{nil})
-		require.ErrorContains(t, "nil deposit request", err)
-	})
-
-	vals := st.Validators()
-	vals[0].PublicKey = sk.PublicKey().Marshal()
-	vals[0].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
-	require.NoError(t, st.SetValidators(vals))
-	bals := st.Balances()
-	bals[0] = params.BeaconConfig().MinActivationBalance + 2000
-	require.NoError(t, st.SetBalances(bals))
-	require.NoError(t, st.SetPendingDeposits(make([]*eth.PendingDeposit, 0))) // reset pbd as the deterministic state populates this already
-	withdrawalCred := make([]byte, 32)
-	withdrawalCred[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
-	depositMessage := &eth.DepositMessage{
-		PublicKey:             sk.PublicKey().Marshal(),
-		Amount:                1000,
-		WithdrawalCredentials: withdrawalCred,
-	}
-	domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
-	require.NoError(t, err)
-	sr, err := signing.ComputeSigningRoot(depositMessage, domain)
-	require.NoError(t, err)
-	sig := sk.Sign(sr[:])
-	reqs := []*enginev1.DepositRequest{
-		{
-			Pubkey:                depositMessage.PublicKey,
-			Index:                 0,
-			WithdrawalCredentials: depositMessage.WithdrawalCredentials,
-			Amount:                depositMessage.Amount,
-			Signature:             sig.Marshal(),
-		},
-	}
-	st, err = requests.ProcessDepositRequests(t.Context(), st, reqs)
-	require.NoError(t, err)
-
-	pbd, err := st.PendingDeposits()
-	require.NoError(t, err)
-	require.Equal(t, 1, len(pbd))
-	require.Equal(t, uint64(1000), pbd[0].Amount)
-	require.DeepEqual(t, bytesutil.SafeCopyBytes(reqs[0].Pubkey), pbd[0].PublicKey)
-}

beacon-chain/core/requests/log.go

@@ -1,9 +0,0 @@
-// Code generated by hack/gen-logs.sh; DO NOT EDIT.
-// This file is created and regenerated automatically. Anything added here might get removed.
-package requests
-
-import "github.com/sirupsen/logrus"
-
-// The prefix for logs from this package will be the text after the last slash in the package path.
-// If you wish to change this, you should add your desired name in the runtime/logging/logrus-prefixed-formatter/prefix-replacement.go file.
-var log = logrus.WithField("package", "beacon-chain/core/requests")

beacon-chain/core/transition/BUILD.bazel

@@ -3,8 +3,6 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
     name = "go_default_library",
     srcs = [
-        "electra.go",
-        "errors.go",
         "log.go",
         "skip_slot_cache.go",
         "state.go",
@@ -27,7 +25,6 @@ go_library(
         "//beacon-chain/core/execution:go_default_library",
         "//beacon-chain/core/fulu:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
-        "//beacon-chain/core/requests:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/core/transition/interop:go_default_library",
         "//beacon-chain/core/validators:go_default_library",
@@ -65,14 +62,11 @@ go_test(
         "altair_transition_no_verify_sig_test.go",
         "bellatrix_transition_no_verify_sig_test.go",
         "benchmarks_test.go",
-        "electra_test.go",
-        "exports_test.go",
         "skip_slot_cache_test.go",
         "state_fuzz_test.go",
         "state_test.go",
         "trailing_slot_state_cache_test.go",
         "transition_fuzz_test.go",
-        "transition_gloas_test.go",
         "transition_no_verify_sig_test.go",
         "transition_test.go",
     ],
@@ -108,7 +102,6 @@ go_test(
         "//time/slots:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
-        "@com_github_stretchr_testify//require:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )

beacon-chain/core/transition/electra_test.go

@@ -1,216 +0,0 @@
-package transition_test
-
-import (
-	"context"
-	"errors"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/transition"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	enginev1 "github.com/OffchainLabs/prysm/v7/proto/engine/v1"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/testing/require"
-	"github.com/OffchainLabs/prysm/v7/testing/util"
-)
-
-func TestProcessOperationsWithNilRequests(t *testing.T) {
-	tests := []struct {
-		name      string
-		modifyBlk func(blockElectra *ethpb.SignedBeaconBlockElectra)
-		errMsg    string
-	}{
-		{
-			name: "Nil deposit request",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				blk.Block.Body.ExecutionRequests.Deposits = []*enginev1.DepositRequest{nil}
-			},
-			errMsg: "nil deposit request",
-		},
-		{
-			name: "Nil withdrawal request",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				blk.Block.Body.ExecutionRequests.Withdrawals = []*enginev1.WithdrawalRequest{nil}
-			},
-			errMsg: "nil withdrawal request",
-		},
-		{
-			name: "Nil consolidation request",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				blk.Block.Body.ExecutionRequests.Consolidations = []*enginev1.ConsolidationRequest{nil}
-			},
-			errMsg: "nil consolidation request",
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			st, ks := util.DeterministicGenesisStateElectra(t, 128)
-			blk, err := util.GenerateFullBlockElectra(st, ks, util.DefaultBlockGenConfig(), 1)
-			require.NoError(t, err)
-
-			tc.modifyBlk(blk)
-
-			b, err := blocks.NewSignedBeaconBlock(blk)
-			require.NoError(t, err)
-
-			require.NoError(t, st.SetSlot(1))
-
-			_, err = transition.ElectraOperations(t.Context(), st, b.Block())
-			require.ErrorContains(t, tc.errMsg, err)
-		})
-	}
-}
-
-func TestElectraOperations_ProcessingErrors(t *testing.T) {
-	tests := []struct {
-		name      string
-		modifyBlk func(blk *ethpb.SignedBeaconBlockElectra)
-		errCheck  func(t *testing.T, err error)
-	}{
-		{
-			name: "ErrProcessProposerSlashingsFailed",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				// Create invalid proposer slashing with out-of-bounds proposer index
-				blk.Block.Body.ProposerSlashings = []*ethpb.ProposerSlashing{
-					{
-						Header_1: &ethpb.SignedBeaconBlockHeader{
-							Header: &ethpb.BeaconBlockHeader{
-								Slot:          1,
-								ProposerIndex: 999999, // Invalid index (out of bounds)
-								ParentRoot:    make([]byte, 32),
-								StateRoot:     make([]byte, 32),
-								BodyRoot:      make([]byte, 32),
-							},
-							Signature: make([]byte, 96),
-						},
-						Header_2: &ethpb.SignedBeaconBlockHeader{
-							Header: &ethpb.BeaconBlockHeader{
-								Slot:          1,
-								ProposerIndex: 999999,
-								ParentRoot:    make([]byte, 32),
-								StateRoot:     make([]byte, 32),
-								BodyRoot:      make([]byte, 32),
-							},
-							Signature: make([]byte, 96),
-						},
-					},
-				}
-			},
-			errCheck: func(t *testing.T, err error) {
-				require.ErrorContains(t, "process proposer slashings failed", err)
-				require.Equal(t, true, errors.Is(err, transition.ErrProcessProposerSlashingsFailed))
-			},
-		},
-		{
-			name: "ErrProcessAttestationsFailed",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				// Create attestation with invalid committee index
-				blk.Block.Body.Attestations = []*ethpb.AttestationElectra{
-					{
-						AggregationBits: []byte{0b00000001},
-						Data: &ethpb.AttestationData{
-							Slot:            1,
-							CommitteeIndex:  999999, // Invalid committee index
-							BeaconBlockRoot: make([]byte, 32),
-							Source: &ethpb.Checkpoint{
-								Epoch: 0,
-								Root:  make([]byte, 32),
-							},
-							Target: &ethpb.Checkpoint{
-								Epoch: 0,
-								Root:  make([]byte, 32),
-							},
-						},
-						CommitteeBits: []byte{0b00000001},
-						Signature:     make([]byte, 96),
-					},
-				}
-			},
-			errCheck: func(t *testing.T, err error) {
-				require.ErrorContains(t, "process attestations failed", err)
-				require.Equal(t, true, errors.Is(err, transition.ErrProcessAttestationsFailed))
-			},
-		},
-		{
-			name: "ErrProcessDepositsFailed",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				// Create deposit with invalid proof length
-				blk.Block.Body.Deposits = []*ethpb.Deposit{
-					{
-						Proof: [][]byte{}, // Invalid: empty proof
-						Data: &ethpb.Deposit_Data{
-							PublicKey:             make([]byte, 48),
-							WithdrawalCredentials: make([]byte, 32),
-							Amount:                32000000000, // 32 ETH in Gwei
-							Signature:             make([]byte, 96),
-						},
-					},
-				}
-			},
-			errCheck: func(t *testing.T, err error) {
-				require.ErrorContains(t, "process deposits failed", err)
-				require.Equal(t, true, errors.Is(err, transition.ErrProcessDepositsFailed))
-			},
-		},
-		{
-			name: "ErrProcessVoluntaryExitsFailed",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				// Create voluntary exit with invalid validator index
-				blk.Block.Body.VoluntaryExits = []*ethpb.SignedVoluntaryExit{
-					{
-						Exit: &ethpb.VoluntaryExit{
-							Epoch:          0,
-							ValidatorIndex: 999999, // Invalid index (out of bounds)
-						},
-						Signature: make([]byte, 96),
-					},
-				}
-			},
-			errCheck: func(t *testing.T, err error) {
-				require.ErrorContains(t, "process voluntary exits failed", err)
-				require.Equal(t, true, errors.Is(err, transition.ErrProcessVoluntaryExitsFailed))
-			},
-		},
-		{
-			name: "ErrProcessBLSChangesFailed",
-			modifyBlk: func(blk *ethpb.SignedBeaconBlockElectra) {
-				// Create BLS to execution change with invalid validator index
-				blk.Block.Body.BlsToExecutionChanges = []*ethpb.SignedBLSToExecutionChange{
-					{
-						Message: &ethpb.BLSToExecutionChange{
-							ValidatorIndex:     999999, // Invalid index (out of bounds)
-							FromBlsPubkey:      make([]byte, 48),
-							ToExecutionAddress: make([]byte, 20),
-						},
-						Signature: make([]byte, 96),
-					},
-				}
-			},
-			errCheck: func(t *testing.T, err error) {
-				require.ErrorContains(t, "process BLS to execution changes failed", err)
-				require.Equal(t, true, errors.Is(err, transition.ErrProcessBLSChangesFailed))
-			},
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			ctx := context.Background()
-			st, ks := util.DeterministicGenesisStateElectra(t, 128)
-			blk, err := util.GenerateFullBlockElectra(st, ks, util.DefaultBlockGenConfig(), 1)
-			require.NoError(t, err)
-
-			tc.modifyBlk(blk)
-
-			b, err := blocks.NewSignedBeaconBlock(blk)
-			require.NoError(t, err)
-
-			require.NoError(t, st.SetSlot(primitives.Slot(1)))
-
-			_, err = transition.ElectraOperations(ctx, st, b.Block())
-			require.NotNil(t, err, "Expected an error but got nil")
-			tc.errCheck(t, err)
-		})
-	}
-}

beacon-chain/core/transition/errors.go

@@ -1,19 +0,0 @@
-package transition
-
-import "errors"
-
-var (
-	ErrAttestationsSignatureInvalid          = errors.New("attestations signature invalid")
-	ErrRandaoSignatureInvalid                = errors.New("randao signature invalid")
-	ErrBLSToExecutionChangesSignatureInvalid = errors.New("BLS to execution changes signature invalid")
-	ErrProcessWithdrawalsFailed              = errors.New("process withdrawals failed")
-	ErrProcessRandaoFailed                   = errors.New("process randao failed")
-	ErrProcessEth1DataFailed                 = errors.New("process eth1 data failed")
-	ErrProcessProposerSlashingsFailed        = errors.New("process proposer slashings failed")
-	ErrProcessAttesterSlashingsFailed        = errors.New("process attester slashings failed")
-	ErrProcessAttestationsFailed             = errors.New("process attestations failed")
-	ErrProcessDepositsFailed                 = errors.New("process deposits failed")
-	ErrProcessVoluntaryExitsFailed           = errors.New("process voluntary exits failed")
-	ErrProcessBLSChangesFailed               = errors.New("process BLS to execution changes failed")
-	ErrProcessSyncAggregateFailed            = errors.New("process sync aggregate failed")
-)

beacon-chain/core/transition/exports_test.go

@@ -1,3 +0,0 @@
-package transition
-
-var ElectraOperations = electraOperations

beacon-chain/core/transition/transition.go

@@ -142,18 +142,6 @@ func ProcessSlot(ctx context.Context, state state.BeaconState) (state.BeaconStat
 	); err != nil {
 		return nil, err
 	}
-
-	// Spec v1.6.1 (pseudocode):
-	// # [New in Gloas:EIP7732]
-	// # Unset the next payload availability
-	// state.execution_payload_availability[(state.slot + 1) % SLOTS_PER_HISTORICAL_ROOT] = 0b0
-	if state.Version() >= version.Gloas {
-		index := uint64((state.Slot() + 1) % params.BeaconConfig().SlotsPerHistoricalRoot)
-		if err := state.UpdateExecutionPayloadAvailabilityAtIndex(index, 0x0); err != nil {
-			return nil, err
-		}
-	}
-
 	return state, nil
 }
 

beacon-chain/core/transition/transition_gloas_test.go

@@ -1,141 +0,0 @@
-package transition
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"testing"
-
-	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
-	"github.com/OffchainLabs/prysm/v7/config/params"
-	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
-	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
-	"github.com/OffchainLabs/prysm/v7/runtime/version"
-	"github.com/stretchr/testify/require"
-)
-
-func TestProcessSlot_GloasClearsNextPayloadAvailability(t *testing.T) {
-	slot := primitives.Slot(10)
-	cfg := params.BeaconConfig()
-	nextIdx := uint64((slot + 1) % cfg.SlotsPerHistoricalRoot)
-	byteIdx := nextIdx / 8
-	bitMask := byte(1 << (nextIdx % 8))
-	availability := bytes.Repeat([]byte{0xFF}, int(cfg.SlotsPerHistoricalRoot/8))
-	st := newGloasState(t, slot, availability)
-
-	_, err := ProcessSlot(context.Background(), st)
-	require.NoError(t, err)
-
-	post := st.ToProto().(*ethpb.BeaconStateGloas)
-	require.Equal(t, byte(0xFF)&^bitMask, post.ExecutionPayloadAvailability[byteIdx])
-}
-
-func TestProcessSlot_GloasClearsNextPayloadAvailability_Wrap(t *testing.T) {
-	cfg := params.BeaconConfig()
-	slot := primitives.Slot(cfg.SlotsPerHistoricalRoot - 1)
-	availability := bytes.Repeat([]byte{0xFF}, int(cfg.SlotsPerHistoricalRoot/8))
-	st := newGloasState(t, slot, availability)
-
-	_, err := ProcessSlot(context.Background(), st)
-	require.NoError(t, err)
-
-	post := st.ToProto().(*ethpb.BeaconStateGloas)
-	require.Equal(t, byte(0xFE), post.ExecutionPayloadAvailability[0])
-}
-
-func TestProcessSlot_GloasAvailabilityUpdateError(t *testing.T) {
-	slot := primitives.Slot(7)
-	availability := make([]byte, 1)
-	st := newGloasState(t, slot, availability)
-
-	_, err := ProcessSlot(context.Background(), st)
-	cfg := params.BeaconConfig()
-	idx := uint64((slot + 1) % cfg.SlotsPerHistoricalRoot)
-	byteIdx := idx / 8
-	require.EqualError(t, err, fmt.Sprintf(
-		"bit index %d (byte index %d) out of range for execution payload availability length %d",
-		idx, byteIdx, len(availability),
-	))
-}
-
-func newGloasState(t *testing.T, slot primitives.Slot, availability []byte) state.BeaconState {
-	t.Helper()
-
-	cfg := params.BeaconConfig()
-	protoState := &ethpb.BeaconStateGloas{
-		Slot:                         slot,
-		LatestBlockHeader:            testBeaconBlockHeader(),
-		BlockRoots:                   make([][]byte, cfg.SlotsPerHistoricalRoot),
-		StateRoots:                   make([][]byte, cfg.SlotsPerHistoricalRoot),
-		RandaoMixes:                  make([][]byte, fieldparams.RandaoMixesLength),
-		ExecutionPayloadAvailability: availability,
-		BuilderPendingPayments:       make([]*ethpb.BuilderPendingPayment, int(cfg.SlotsPerEpoch*2)),
-		LatestExecutionPayloadBid: &ethpb.ExecutionPayloadBid{
-			ParentBlockHash:        make([]byte, 32),
-			ParentBlockRoot:        make([]byte, 32),
-			BlockHash:              make([]byte, 32),
-			PrevRandao:             make([]byte, 32),
-			FeeRecipient:           make([]byte, 20),
-			BlobKzgCommitmentsRoot: make([]byte, 32),
-		},
-		Eth1Data: &ethpb.Eth1Data{
-			DepositRoot: make([]byte, 32),
-			BlockHash:   make([]byte, 32),
-		},
-		PreviousEpochParticipation:  []byte{},
-		CurrentEpochParticipation:   []byte{},
-		JustificationBits:           []byte{0},
-		PreviousJustifiedCheckpoint: &ethpb.Checkpoint{Root: make([]byte, 32)},
-		CurrentJustifiedCheckpoint:  &ethpb.Checkpoint{Root: make([]byte, 32)},
-		FinalizedCheckpoint:         &ethpb.Checkpoint{Root: make([]byte, 32)},
-		CurrentSyncCommittee:        &ethpb.SyncCommittee{},
-		NextSyncCommittee:           &ethpb.SyncCommittee{},
-	}
-
-	for i := range protoState.BlockRoots {
-		protoState.BlockRoots[i] = make([]byte, 32)
-	}
-	for i := range protoState.StateRoots {
-		protoState.StateRoots[i] = make([]byte, 32)
-	}
-	for i := range protoState.RandaoMixes {
-		protoState.RandaoMixes[i] = make([]byte, 32)
-	}
-
-	for i := range protoState.BuilderPendingPayments {
-		protoState.BuilderPendingPayments[i] = &ethpb.BuilderPendingPayment{
-			Withdrawal: &ethpb.BuilderPendingWithdrawal{
-				FeeRecipient: make([]byte, 20),
-			},
-		}
-	}
-
-	pubkeys := make([][]byte, cfg.SyncCommitteeSize)
-	for i := range pubkeys {
-		pubkeys[i] = make([]byte, fieldparams.BLSPubkeyLength)
-	}
-	aggPubkey := make([]byte, fieldparams.BLSPubkeyLength)
-	protoState.CurrentSyncCommittee = &ethpb.SyncCommittee{
-		Pubkeys:         pubkeys,
-		AggregatePubkey: aggPubkey,
-	}
-	protoState.NextSyncCommittee = &ethpb.SyncCommittee{
-		Pubkeys:         pubkeys,
-		AggregatePubkey: aggPubkey,
-	}
-
-	st, err := state_native.InitializeFromProtoGloas(protoState)
-	require.NoError(t, err)
-	require.Equal(t, version.Gloas, st.Version())
-	return st
-}
-
-func testBeaconBlockHeader() *ethpb.BeaconBlockHeader {
-	return &ethpb.BeaconBlockHeader{
-		ParentRoot: make([]byte, 32),
-		StateRoot:  make([]byte, 32),
-		BodyRoot:   make([]byte, 32),
-	}
-}

beacon-chain/core/transition/transition_no_verify_sig.go

@@ -7,11 +7,12 @@ import (
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/altair"
 	b "github.com/OffchainLabs/prysm/v7/beacon-chain/core/blocks"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/electra"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/transition/interop"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/validators"
+	v "github.com/OffchainLabs/prysm/v7/beacon-chain/core/validators"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v7/config/features"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/crypto/bls"
@@ -69,11 +70,10 @@ func ExecuteStateTransitionNoVerifyAnySig(
 	}
 
 	// Execute per block transition.
-	sigSlice, st, err := ProcessBlockNoVerifyAnySig(ctx, st, signed)
+	set, st, err := ProcessBlockNoVerifyAnySig(ctx, st, signed)
 	if err != nil {
 		return nil, nil, errors.Wrap(err, "could not process block")
 	}
-	set := sigSlice.Batch()
 
 	// State root validation.
 	postStateRoot, err := st.HashTreeRoot(ctx)
@@ -113,7 +113,7 @@ func ExecuteStateTransitionNoVerifyAnySig(
 //	      assert block.state_root == hash_tree_root(state)
 func CalculateStateRoot(
 	ctx context.Context,
-	rollback state.BeaconState,
+	state state.BeaconState,
 	signed interfaces.ReadOnlySignedBeaconBlock,
 ) ([32]byte, error) {
 	ctx, span := trace.StartSpan(ctx, "core.state.CalculateStateRoot")
@@ -122,7 +122,7 @@ func CalculateStateRoot(
 		tracing.AnnotateError(span, ctx.Err())
 		return [32]byte{}, ctx.Err()
 	}
-	if rollback == nil || rollback.IsNil() {
+	if state == nil || state.IsNil() {
 		return [32]byte{}, errors.New("nil state")
 	}
 	if signed == nil || signed.IsNil() || signed.Block().IsNil() {
@@ -130,7 +130,7 @@ func CalculateStateRoot(
 	}
 
 	// Copy state to avoid mutating the state reference.
-	state := rollback.Copy()
+	state = state.Copy()
 
 	// Execute per slots transition.
 	var err error
@@ -141,103 +141,14 @@ func CalculateStateRoot(
 	}
 
 	// Execute per block transition.
-	if features.Get().EnableProposerPreprocessing {
-		state, err = processBlockForProposing(ctx, state, signed)
-		if err != nil {
-			return [32]byte{}, errors.Wrap(err, "could not process block for proposing")
-		}
-	} else {
-		state, err = ProcessBlockForStateRoot(ctx, state, signed)
-		if err != nil {
-			return [32]byte{}, errors.Wrap(err, "could not process block")
-		}
+	state, err = ProcessBlockForStateRoot(ctx, state, signed)
+	if err != nil {
+		return [32]byte{}, errors.Wrap(err, "could not process block")
 	}
+
 	return state.HashTreeRoot(ctx)
 }
 
-// processBlockVerifySigs processes the block and verifies the signatures within it. Block signatures are not verified as this block is not yet signed.
-func processBlockForProposing(ctx context.Context, st state.BeaconState, signed interfaces.ReadOnlySignedBeaconBlock) (state.BeaconState, error) {
-	var err error
-	var set BlockSignatureBatches
-	set, st, err = ProcessBlockNoVerifyAnySig(ctx, st, signed)
-	if err != nil {
-		return nil, err
-	}
-	// We first try to verify all sigantures batched optimistically. We ignore block proposer signature.
-	sigSet := set.Batch()
-	valid, err := sigSet.Verify()
-	if err != nil || valid {
-		return st, err
-	}
-	// Some signature failed to verify.
-	// Verify Attestations signatures
-	attSigs := set.AttestationSignatures
-	if attSigs == nil {
-		return nil, ErrAttestationsSignatureInvalid
-	}
-	valid, err = attSigs.Verify()
-	if err != nil {
-		return nil, err
-	}
-	if !valid {
-		return nil, ErrAttestationsSignatureInvalid
-	}
-
-	// Verify Randao signature
-	randaoSigs := set.RandaoSignatures
-	if randaoSigs == nil {
-		return nil, ErrRandaoSignatureInvalid
-	}
-	valid, err = randaoSigs.Verify()
-	if err != nil {
-		return nil, err
-	}
-	if !valid {
-		return nil, ErrRandaoSignatureInvalid
-	}
-
-	if signed.Block().Version() < version.Capella {
-		//This should not happen as we must have failed one of the above signatures.
-		return st, nil
-	}
-	// Verify BLS to execution changes signatures
-	blsChangeSigs := set.BLSChangeSignatures
-	if blsChangeSigs == nil {
-		return nil, ErrBLSToExecutionChangesSignatureInvalid
-	}
-	valid, err = blsChangeSigs.Verify()
-	if err != nil {
-		return nil, err
-	}
-	if !valid {
-		return nil, ErrBLSToExecutionChangesSignatureInvalid
-	}
-	// We should not reach this point as one of the above signatures must have failed.
-	return st, nil
-}
-
-// BlockSignatureBatches holds the signature batches for different parts of a beacon block.
-type BlockSignatureBatches struct {
-	RandaoSignatures      *bls.SignatureBatch
-	AttestationSignatures *bls.SignatureBatch
-	BLSChangeSignatures   *bls.SignatureBatch
-}
-
-// Batch returns the batch of signature batches in the BlockSignatureBatches.
-func (b BlockSignatureBatches) Batch() *bls.SignatureBatch {
-	sigs := bls.NewSet()
-	if b.RandaoSignatures != nil {
-		sigs.Join(b.RandaoSignatures)
-	}
-	if b.AttestationSignatures != nil {
-		sigs.Join(b.AttestationSignatures)
-	}
-	if b.BLSChangeSignatures != nil {
-		sigs.Join(b.BLSChangeSignatures)
-	}
-	return sigs
-}
-
 // ProcessBlockNoVerifyAnySig creates a new, modified beacon state by applying block operation
 // transformations as defined in the Ethereum Serenity specification. It does not validate
 // any block signature except for deposit and slashing signatures. It also returns the relevant
@@ -254,48 +165,48 @@ func ProcessBlockNoVerifyAnySig(
 	ctx context.Context,
 	st state.BeaconState,
 	signed interfaces.ReadOnlySignedBeaconBlock,
-) (BlockSignatureBatches, state.BeaconState, error) {
+) (*bls.SignatureBatch, state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "core.state.ProcessBlockNoVerifyAnySig")
 	defer span.End()
-	set := BlockSignatureBatches{}
 	if err := blocks.BeaconBlockIsNil(signed); err != nil {
-		return set, nil, err
+		return nil, nil, err
 	}
 
 	if st.Version() != signed.Block().Version() {
-		return set, nil, fmt.Errorf("state and block are different version. %d != %d", st.Version(), signed.Block().Version())
+		return nil, nil, fmt.Errorf("state and block are different version. %d != %d", st.Version(), signed.Block().Version())
 	}
 
 	blk := signed.Block()
 	st, err := ProcessBlockForStateRoot(ctx, st, signed)
 	if err != nil {
-		return set, nil, err
+		return nil, nil, err
 	}
 
 	randaoReveal := signed.Block().Body().RandaoReveal()
 	rSet, err := b.RandaoSignatureBatch(ctx, st, randaoReveal[:])
 	if err != nil {
 		tracing.AnnotateError(span, err)
-		return set, nil, errors.Wrap(err, "could not retrieve randao signature set")
+		return nil, nil, errors.Wrap(err, "could not retrieve randao signature set")
 	}
-	set.RandaoSignatures = rSet
 	aSet, err := b.AttestationSignatureBatch(ctx, st, signed.Block().Body().Attestations())
 	if err != nil {
-		return set, nil, errors.Wrap(err, "could not retrieve attestation signature set")
+		return nil, nil, errors.Wrap(err, "could not retrieve attestation signature set")
 	}
-	set.AttestationSignatures = aSet
 
 	// Merge beacon block, randao and attestations signatures into a set.
+	set := bls.NewSet()
+	set.Join(rSet).Join(aSet)
+
 	if blk.Version() >= version.Capella {
 		changes, err := signed.Block().Body().BLSToExecutionChanges()
 		if err != nil {
-			return set, nil, errors.Wrap(err, "could not get BLSToExecutionChanges")
+			return nil, nil, errors.Wrap(err, "could not get BLSToExecutionChanges")
 		}
 		cSet, err := b.BLSChangesSignatureBatch(st, changes)
 		if err != nil {
-			return set, nil, errors.Wrap(err, "could not get BLSToExecutionChanges signatures")
+			return nil, nil, errors.Wrap(err, "could not get BLSToExecutionChanges signatures")
 		}
-		set.BLSChangeSignatures = cSet
+		set.Join(cSet)
 	}
 	return set, st, nil
 }
@@ -357,7 +268,7 @@ func ProcessOperationsNoVerifyAttsSigs(
 			return nil, err
 		}
 	} else {
-		state, err = electraOperations(ctx, state, beaconBlock)
+		state, err = electra.ProcessOperations(ctx, state, beaconBlock)
 		if err != nil {
 			return nil, err
 		}
@@ -415,7 +326,7 @@ func ProcessBlockForStateRoot(
 		if state.Version() >= version.Capella {
 			state, err = b.ProcessWithdrawals(state, executionData)
 			if err != nil {
-				return nil, errors.Wrap(ErrProcessWithdrawalsFailed, err.Error())
+				return nil, errors.Wrap(err, "could not process withdrawals")
 			}
 		}
 		if err = b.ProcessPayload(state, blk.Body()); err != nil {
@@ -427,13 +338,13 @@ func ProcessBlockForStateRoot(
 	state, err = b.ProcessRandaoNoVerify(state, randaoReveal[:])
 	if err != nil {
 		tracing.AnnotateError(span, err)
-		return nil, errors.Wrap(ErrProcessRandaoFailed, err.Error())
+		return nil, errors.Wrap(err, "could not verify and process randao")
 	}
 
 	state, err = b.ProcessEth1DataInBlock(ctx, state, signed.Block().Body().Eth1Data())
 	if err != nil {
 		tracing.AnnotateError(span, err)
-		return nil, errors.Wrap(ErrProcessEth1DataFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process eth1 data")
 	}
 
 	state, err = ProcessOperationsNoVerifyAttsSigs(ctx, state, signed.Block())
@@ -452,7 +363,7 @@ func ProcessBlockForStateRoot(
 	}
 	state, _, err = altair.ProcessSyncAggregate(ctx, state, sa)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessSyncAggregateFailed, err.Error())
+		return nil, errors.Wrap(err, "process_sync_aggregate failed")
 	}
 
 	return state, nil
@@ -468,35 +379,31 @@ func altairOperations(ctx context.Context, st state.BeaconState, beaconBlock int
 	exitInfo := &validators.ExitInfo{}
 	if hasSlashings || hasExits {
 		// ExitInformation is expensive to compute, only do it if we need it.
-		exitInfo = validators.ExitInformation(st)
+		exitInfo = v.ExitInformation(st)
 		if err := helpers.UpdateTotalActiveBalanceCache(st, exitInfo.TotalActiveBalance); err != nil {
 			return nil, errors.Wrap(err, "could not update total active balance cache")
 		}
 	}
 	st, err = b.ProcessProposerSlashings(ctx, st, beaconBlock.Body().ProposerSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessProposerSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair proposer slashing")
 	}
 	st, err = b.ProcessAttesterSlashings(ctx, st, beaconBlock.Body().AttesterSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttesterSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair attester slashing")
 	}
 	st, err = altair.ProcessAttestationsNoVerifySignature(ctx, st, beaconBlock)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttestationsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair attestation")
 	}
 	if _, err := altair.ProcessDeposits(ctx, st, beaconBlock.Body().Deposits()); err != nil {
-		return nil, errors.Wrap(ErrProcessDepositsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process altair deposit")
 	}
 	st, err = b.ProcessVoluntaryExits(ctx, st, beaconBlock.Body().VoluntaryExits(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessVoluntaryExitsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process voluntary exits")
 	}
-	st, err = b.ProcessBLSToExecutionChanges(st, beaconBlock)
-	if err != nil {
-		return nil, errors.Wrap(ErrProcessBLSChangesFailed, err.Error())
-	}
-	return st, nil
+	return b.ProcessBLSToExecutionChanges(st, beaconBlock)
 }
 
 // This calls phase 0 block operations.
@@ -504,32 +411,32 @@ func phase0Operations(ctx context.Context, st state.BeaconState, beaconBlock int
 	var err error
 	hasSlashings := len(beaconBlock.Body().ProposerSlashings()) > 0 || len(beaconBlock.Body().AttesterSlashings()) > 0
 	hasExits := len(beaconBlock.Body().VoluntaryExits()) > 0
-	var exitInfo *validators.ExitInfo
+	var exitInfo *v.ExitInfo
 	if hasSlashings || hasExits {
 		// ExitInformation is expensive to compute, only do it if we need it.
-		exitInfo = validators.ExitInformation(st)
+		exitInfo = v.ExitInformation(st)
 		if err := helpers.UpdateTotalActiveBalanceCache(st, exitInfo.TotalActiveBalance); err != nil {
 			return nil, errors.Wrap(err, "could not update total active balance cache")
 		}
 	}
 	st, err = b.ProcessProposerSlashings(ctx, st, beaconBlock.Body().ProposerSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessProposerSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process block proposer slashings")
 	}
 	st, err = b.ProcessAttesterSlashings(ctx, st, beaconBlock.Body().AttesterSlashings(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttesterSlashingsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process block attester slashings")
 	}
 	st, err = b.ProcessAttestationsNoVerifySignature(ctx, st, beaconBlock)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessAttestationsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process block attestations")
 	}
 	if _, err := altair.ProcessDeposits(ctx, st, beaconBlock.Body().Deposits()); err != nil {
-		return nil, errors.Wrap(ErrProcessDepositsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process deposits")
 	}
 	st, err = b.ProcessVoluntaryExits(ctx, st, beaconBlock.Body().VoluntaryExits(), exitInfo)
 	if err != nil {
-		return nil, errors.Wrap(ErrProcessVoluntaryExitsFailed, err.Error())
+		return nil, errors.Wrap(err, "could not process voluntary exits")
 	}
 	return st, nil
 }

beacon-chain/core/transition/transition_no_verify_sig_test.go

@@ -132,8 +132,7 @@ func TestProcessBlockNoVerify_PassesProcessingConditions(t *testing.T) {
 	set, _, err := transition.ProcessBlockNoVerifyAnySig(t.Context(), beaconState, wsb)
 	require.NoError(t, err)
 	// Test Signature set verifies.
-	sigSet := set.Batch()
-	verified, err := sigSet.Verify()
+	verified, err := set.Verify()
 	require.NoError(t, err)
 	assert.Equal(t, true, verified, "Could not verify signature set.")
 }
@@ -146,8 +145,7 @@ func TestProcessBlockNoVerifyAnySigAltair_OK(t *testing.T) {
 	require.NoError(t, err)
 	set, _, err := transition.ProcessBlockNoVerifyAnySig(t.Context(), beaconState, wsb)
 	require.NoError(t, err)
-	sigSet := set.Batch()
-	verified, err := sigSet.Verify()
+	verified, err := set.Verify()
 	require.NoError(t, err)
 	require.Equal(t, true, verified, "Could not verify signature set")
 }
@@ -156,9 +154,8 @@ func TestProcessBlockNoVerify_SigSetContainsDescriptions(t *testing.T) {
 	beaconState, block, _, _, _ := createFullBlockWithOperations(t)
 	wsb, err := blocks.NewSignedBeaconBlock(block)
 	require.NoError(t, err)
-	signatures, _, err := transition.ProcessBlockNoVerifyAnySig(t.Context(), beaconState, wsb)
+	set, _, err := transition.ProcessBlockNoVerifyAnySig(t.Context(), beaconState, wsb)
 	require.NoError(t, err)
-	set := signatures.Batch()
 	assert.Equal(t, len(set.Signatures), len(set.Descriptions), "Signatures and descriptions do not match up")
 	assert.Equal(t, "randao signature", set.Descriptions[0])
 	assert.Equal(t, "attestation signature", set.Descriptions[1])

beacon-chain/db/filesystem/data_column.go

@@ -512,11 +512,6 @@ func (dcs *DataColumnStorage) Get(root [fieldparams.RootLength]byte, indices []u
 	if err != nil {
 		return nil, errors.Wrap(err, "data column sidecars file path open")
 	}
-	defer func() {
-		if closeErr := file.Close(); closeErr != nil {
-			log.WithError(closeErr).WithField("file", filePath).Error("Error closing file during Get")
-		}
-	}()
 
 	// Read file metadata.
 	metadata, err := dcs.metadata(file)

beacon-chain/db/iface/interface.go

@@ -89,7 +89,6 @@ type NoHeadAccessDatabase interface {
 	SaveBlocks(ctx context.Context, blocks []interfaces.ReadOnlySignedBeaconBlock) error
 	SaveROBlocks(ctx context.Context, blks []blocks.ROBlock, cache bool) error
 	SaveGenesisBlockRoot(ctx context.Context, blockRoot [32]byte) error
-	SlotByBlockRoot(context.Context, [32]byte) (primitives.Slot, error)
 	// State related methods.
 	SaveState(ctx context.Context, state state.ReadOnlyBeaconState, blockRoot [32]byte) error
 	SaveStates(ctx context.Context, states []state.ReadOnlyBeaconState, blockRoots [][32]byte) error
@@ -97,7 +96,6 @@ type NoHeadAccessDatabase interface {
 	DeleteStates(ctx context.Context, blockRoots [][32]byte) error
 	SaveStateSummary(ctx context.Context, summary *ethpb.StateSummary) error
 	SaveStateSummaries(ctx context.Context, summaries []*ethpb.StateSummary) error
-	SlotInDiffTree(primitives.Slot) (uint64, int, error)
 	// Checkpoint operations.
 	SaveJustifiedCheckpoint(ctx context.Context, checkpoint *ethpb.Checkpoint) error
 	SaveFinalizedCheckpoint(ctx context.Context, checkpoint *ethpb.Checkpoint) error

beacon-chain/db/kv/BUILD.bazel

@@ -32,7 +32,6 @@ go_library(
         "state_diff_helpers.go",
         "state_summary.go",
         "state_summary_cache.go",
-        "testing_helpers.go",
         "utils.go",
         "validated_checkpoint.go",
         "wss.go",

beacon-chain/db/kv/custody_test.go

@@ -67,6 +67,7 @@ func getSubscriptionStatusFromDB(t *testing.T, db *Store) bool {
 	return subscribed
 }
 
+
 func TestUpdateCustodyInfo(t *testing.T) {
 	ctx := t.Context()
 

beacon-chain/db/kv/error.go

@@ -22,10 +22,6 @@ var ErrNotFoundFeeRecipient = errors.Wrap(ErrNotFound, "fee recipient")
 // ErrNotFoundMetadataSeqNum is a not found error specifically for the metadata sequence number getter
 var ErrNotFoundMetadataSeqNum = errors.Wrap(ErrNotFound, "metadata sequence number")
 
-// ErrStateDiffIncompatible is returned when state-diff feature is enabled
-// but the database was created without state-diff support.
-var ErrStateDiffIncompatible = errors.New("state-diff feature enabled but database was created without state-diff support")
-
 var errEmptyBlockSlice = errors.New("[]blocks.ROBlock is empty")
 var errIncorrectBlockParent = errors.New("unexpected missing or forked blocks in a []ROBlock")
 var errFinalizedChildNotFound = errors.New("unable to find finalized root descending from backfill batch")

beacon-chain/db/kv/genesis.go

@@ -42,10 +42,6 @@ func (s *Store) SaveGenesisData(ctx context.Context, genesisState state.BeaconSt
 	if err := s.SaveGenesisBlockRoot(ctx, genesisBlkRoot); err != nil {
 		return errors.Wrap(err, "could not save genesis block root")
 	}
-
-	if err := s.initializeStateDiff(0, genesisState); err != nil {
-		return errors.Wrap(err, "failed to initialize state diff for genesis")
-	}
 	return nil
 }
 

beacon-chain/db/kv/kv.go

@@ -203,47 +203,17 @@ func NewKVStore(ctx context.Context, dirPath string, opts ...KVStoreOption) (*St
 		return nil, err
 	}
 
-	if err := kv.startStateDiff(ctx); err != nil {
-		if errors.Is(err, ErrStateDiffIncompatible) {
-			return kv, err
+	if features.Get().EnableStateDiff {
+		sdCache, err := newStateDiffCache(kv)
+		if err != nil {
+			return nil, err
 		}
-		return nil, err
+		kv.stateDiffCache = sdCache
 	}
+
 	return kv, nil
 }
 
-func (kv *Store) startStateDiff(ctx context.Context) error {
-	if !features.Get().EnableStateDiff {
-		return nil
-	}
-	// Check if offset already exists (existing state-diff database).
-	hasOffset, err := kv.hasStateDiffOffset()
-	if err != nil {
-		return err
-	}
-
-	if hasOffset {
-		// Existing state-diff database - restarts not yet supported.
-		return errors.New("restarting with existing state-diff database not yet supported")
-	}
-
-	// Check if this is a new database (no head block).
-	headBlock, err := kv.HeadBlock(ctx)
-	if err != nil {
-		return errors.Wrap(err, "could not get head block")
-	}
-
-	if headBlock == nil {
-		// New database - will be initialized later during checkpoint/genesis sync.
-		// stateDiffCache stays nil until SaveOrigin or SaveGenesisData initializes it.
-		log.Info("State-diff enabled: will be initialized during checkpoint or genesis sync")
-	} else {
-		// Existing database without state-diff - return store with error for caller to handle.
-		return ErrStateDiffIncompatible
-	}
-	return nil
-}
-
 // ClearDB removes the previously stored database in the data directory.
 func (s *Store) ClearDB() error {
 	if err := s.Close(); err != nil {

beacon-chain/db/kv/state.go

@@ -1053,10 +1053,6 @@ func (s *Store) getStateUsingStateDiff(ctx context.Context, blockRoot [32]byte)
 		return nil, err
 	}
 
-	if uint64(slot) < s.getOffset() {
-		return nil, ErrSlotBeforeOffset
-	}
-
 	st, err := s.stateByDiff(ctx, slot)
 	if err != nil {
 		return nil, err
@@ -1074,10 +1070,6 @@ func (s *Store) hasStateUsingStateDiff(ctx context.Context, blockRoot [32]byte)
 		return false, err
 	}
 
-	if uint64(slot) < s.getOffset() {
-		return false, ErrSlotBeforeOffset
-	}
-
 	stateLvl := computeLevel(s.getOffset(), slot)
 	return stateLvl != -1, nil
 }

beacon-chain/db/kv/state_diff.go

@@ -23,16 +23,6 @@ const (
 	The data at level 0 is saved every 2**exponent[0] slots and always contains a full state snapshot that is used as a base for the delta saved at other levels.
 */
 
-// SlotInDiffTree returns whether the given slot is a saving point in the diff tree.
-// If it is, it also returns the offset and level in the tree.
-func (s *Store) SlotInDiffTree(slot primitives.Slot) (uint64, int, error) {
-	offset := s.getOffset()
-	if uint64(slot) < offset {
-		return 0, -1, ErrSlotBeforeOffset
-	}
-	return offset, computeLevel(offset, slot), nil
-}
-
 // saveStateByDiff takes a state and decides between saving a full state snapshot or a diff.
 func (s *Store) saveStateByDiff(ctx context.Context, st state.ReadOnlyBeaconState) error {
 	_, span := trace.StartSpan(ctx, "BeaconDB.saveStateByDiff")
@@ -43,10 +33,13 @@ func (s *Store) saveStateByDiff(ctx context.Context, st state.ReadOnlyBeaconStat
 	}
 
 	slot := st.Slot()
-	offset, lvl, err := s.SlotInDiffTree(slot)
-	if err != nil {
-		return errors.Wrap(err, "could not determine if slot is in diff tree")
+	offset := s.getOffset()
+	if uint64(slot) < offset {
+		return ErrSlotBeforeOffset
 	}
+
+	// Find the level to save the state.
+	lvl := computeLevel(offset, slot)
 	if lvl == -1 {
 		return nil
 	}

beacon-chain/db/kv/state_diff_cache.go

@@ -25,7 +25,7 @@ func newStateDiffCache(s *Store) (*stateDiffCache, error) {
 			return bbolt.ErrBucketNotFound
 		}
 
-		offsetBytes := bucket.Get(offsetKey)
+		offsetBytes := bucket.Get([]byte("offset"))
 		if offsetBytes == nil {
 			return errors.New("state diff cache: offset not found")
 		}

beacon-chain/db/kv/state_diff_helpers.go

@@ -9,19 +9,17 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
 	statenative "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
 	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
-	"github.com/OffchainLabs/prysm/v7/config/features"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/hdiff"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/math"
 	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/runtime/version"
-	pkgerrors "github.com/pkg/errors"
 	"go.etcd.io/bbolt"
 )
 
 var (
 	offsetKey           = []byte("offset")
-	ErrSlotBeforeOffset = errors.New("slot is before state-diff root offset")
+	ErrSlotBeforeOffset = errors.New("slot is before root offset")
 )
 
 func makeKeyForStateDiffTree(level int, slot uint64) []byte {
@@ -75,9 +73,6 @@ func (s *Store) getAnchorState(offset uint64, lvl int, slot primitives.Slot) (an
 
 // computeLevel computes the level in the diff tree. Returns -1 in case slot should not be in tree.
 func computeLevel(offset uint64, slot primitives.Slot) int {
-	if uint64(slot) < offset {
-		return -1
-	}
 	rel := uint64(slot) - offset
 	for i, exp := range flags.Get().StateDiffExponents {
 		if exp < 2 || exp >= 64 {
@@ -124,66 +119,6 @@ func (s *Store) getOffset() uint64 {
 	return s.stateDiffCache.getOffset()
 }
 
-// hasStateDiffOffset checks if the state-diff offset has been set in the database.
-// This is used to detect if an existing database has state-diff enabled.
-func (s *Store) hasStateDiffOffset() (bool, error) {
-	var hasOffset bool
-	err := s.db.View(func(tx *bbolt.Tx) error {
-		bucket := tx.Bucket(stateDiffBucket)
-		if bucket == nil {
-			return nil
-		}
-		hasOffset = bucket.Get(offsetKey) != nil
-		return nil
-	})
-	return hasOffset, err
-}
-
-// initializeStateDiff sets up the state-diff schema for a new database.
-// This should be called during checkpoint sync or genesis sync.
-func (s *Store) initializeStateDiff(slot primitives.Slot, initialState state.ReadOnlyBeaconState) error {
-	// Return early if the feature is not set
-	if !features.Get().EnableStateDiff {
-		return nil
-	}
-	// Only reinitialize if the offset is different
-	if s.stateDiffCache != nil {
-		if s.stateDiffCache.getOffset() == uint64(slot) {
-			log.WithField("offset", slot).Warning("Ignoring state diff cache reinitialization")
-			return nil
-		}
-	}
-	// Write offset directly to the database (without using cache which doesn't exist yet).
-	err := s.db.Update(func(tx *bbolt.Tx) error {
-		bucket := tx.Bucket(stateDiffBucket)
-		if bucket == nil {
-			return bbolt.ErrBucketNotFound
-		}
-
-		offsetBytes := make([]byte, 8)
-		binary.LittleEndian.PutUint64(offsetBytes, uint64(slot))
-		return bucket.Put(offsetKey, offsetBytes)
-	})
-	if err != nil {
-		return pkgerrors.Wrap(err, "failed to set offset")
-	}
-
-	// Create the state diff cache (this will read the offset from the database).
-	sdCache, err := newStateDiffCache(s)
-	if err != nil {
-		return pkgerrors.Wrap(err, "failed to create state diff cache")
-	}
-	s.stateDiffCache = sdCache
-
-	// Save the initial state as a full snapshot.
-	if err := s.saveFullSnapshot(initialState); err != nil {
-		return pkgerrors.Wrap(err, "failed to save initial snapshot")
-	}
-
-	log.WithField("offset", slot).Info("Initialized state-diff cache")
-	return nil
-}
-
 func keyForSnapshot(v int) ([]byte, error) {
 	switch v {
 	case version.Fulu:

beacon-chain/db/kv/state_diff_test.go

@@ -43,12 +43,8 @@ func TestStateDiff_ComputeLevel(t *testing.T) {
 
 	offset := db.getOffset()
 
-	// should be -1. slot < offset
-	lvl := computeLevel(10, primitives.Slot(9))
-	require.Equal(t, -1, lvl)
-
 	// 2 ** 21
-	lvl = computeLevel(offset, primitives.Slot(math.PowerOf2(21)))
+	lvl := computeLevel(offset, primitives.Slot(math.PowerOf2(21)))
 	require.Equal(t, 0, lvl)
 
 	// 2 ** 21 * 3

beacon-chain/db/kv/state_test.go

@@ -1395,23 +1395,6 @@ func TestStore_CanSaveRetrieveStateUsingStateDiff(t *testing.T) {
 		require.IsNil(t, readSt)
 	})
 
-	t.Run("slot before offset", func(t *testing.T) {
-		db := setupDB(t)
-		setDefaultStateDiffExponents()
-
-		err := setOffsetInDB(db, 10)
-		require.NoError(t, err)
-
-		r := bytesutil.ToBytes32([]byte{'A'})
-		ss := &ethpb.StateSummary{Slot: 9, Root: r[:]}
-		err = db.SaveStateSummary(t.Context(), ss)
-		require.NoError(t, err)
-
-		st, err := db.getStateUsingStateDiff(t.Context(), r)
-		require.ErrorIs(t, err, ErrSlotBeforeOffset)
-		require.IsNil(t, st)
-	})
-
 	t.Run("Full state snapshot", func(t *testing.T) {
 		t.Run("using state summary", func(t *testing.T) {
 			for v := range version.All() {
@@ -1644,21 +1627,4 @@ func TestStore_HasStateUsingStateDiff(t *testing.T) {
 		}
 
 	})
-
-	t.Run("slot before offset", func(t *testing.T) {
-		db := setupDB(t)
-		setDefaultStateDiffExponents()
-
-		err := setOffsetInDB(db, 10)
-		require.NoError(t, err)
-
-		r := bytesutil.ToBytes32([]byte{'B'})
-		ss := &ethpb.StateSummary{Slot: 0, Root: r[:]}
-		err = db.SaveStateSummary(t.Context(), ss)
-		require.NoError(t, err)
-
-		hasState, err := db.hasStateUsingStateDiff(t.Context(), r)
-		require.ErrorIs(t, err, ErrSlotBeforeOffset)
-		require.Equal(t, false, hasState)
-	})
 }

beacon-chain/db/kv/testing_helpers.go

@@ -1,37 +0,0 @@
-package kv
-
-import (
-	"encoding/binary"
-	"testing"
-
-	"go.etcd.io/bbolt"
-)
-
-// InitStateDiffCacheForTesting initializes the state diff cache with the given offset.
-// This is intended for testing purposes when setting up state diff after database creation.
-// This file is only compiled when the "testing" build tag is set.
-func (s *Store) InitStateDiffCacheForTesting(t testing.TB, offset uint64) error {
-	// First, set the offset in the database.
-	err := s.db.Update(func(tx *bbolt.Tx) error {
-		bucket := tx.Bucket(stateDiffBucket)
-		if bucket == nil {
-			return bbolt.ErrBucketNotFound
-		}
-
-		offsetBytes := make([]byte, 8)
-		binary.LittleEndian.PutUint64(offsetBytes, offset)
-		return bucket.Put([]byte("offset"), offsetBytes)
-	})
-
-	if err != nil {
-		return err
-	}
-
-	// Then create the state diff cache.
-	sdCache, err := newStateDiffCache(s)
-	if err != nil {
-		return err
-	}
-	s.stateDiffCache = sdCache
-	return nil
-}

beacon-chain/db/kv/wss.go

@@ -110,8 +110,6 @@ func (s *Store) SaveOrigin(ctx context.Context, serState, serBlock []byte) error
 	if err = s.SaveFinalizedCheckpoint(ctx, chkpt); err != nil {
 		return errors.Wrap(err, "save finalized checkpoint")
 	}
-	if err := s.initializeStateDiff(state.Slot(), state); err != nil {
-		return errors.Wrap(err, "failed to initialize state diff")
-	}
+
 	return nil
 }

beacon-chain/light-client/store_test.go

@@ -75,6 +75,7 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 	p2p := p2pTesting.NewTestP2P(t)
 	lcStore := NewLightClientStore(p2p, new(event.Feed), testDB.SetupDB(t))
 
+	timeForGoroutinesToFinish := 20 * time.Microsecond
 	// update 0 with basic data and no supermajority following an empty lastFinalityUpdate - should save and broadcast
 	l0 := util.NewTestLightClient(t, version.Altair)
 	update0, err := NewLightClientFinalityUpdateFromBeaconState(l0.Ctx, l0.State, l0.Block, l0.AttestedState, l0.AttestedBlock, l0.FinalizedBlock)
@@ -86,9 +87,8 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update0, true)
 	require.Equal(t, update0, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	require.Eventually(t, func() bool {
-		return p2p.BroadcastCalled.Load()
-	}, time.Second, 10*time.Millisecond, "Broadcast should have been called after setting a new last finality update when previous is nil")
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
+	require.Equal(t, true, p2p.BroadcastCalled.Load(), "Broadcast should have been called after setting a new last finality update when previous is nil")
 	p2p.BroadcastCalled.Store(false) // Reset for next test
 
 	// update 1 with same finality slot, increased attested slot, and no supermajority - should save but not broadcast
@@ -102,7 +102,7 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update1, true)
 	require.Equal(t, update1, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	time.Sleep(50 * time.Millisecond) // Wait briefly to verify broadcast is not called
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
 	require.Equal(t, false, p2p.BroadcastCalled.Load(), "Broadcast should not have been called after setting a new last finality update without supermajority")
 	p2p.BroadcastCalled.Store(false) // Reset for next test
 
@@ -117,9 +117,8 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update2, true)
 	require.Equal(t, update2, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	require.Eventually(t, func() bool {
-		return p2p.BroadcastCalled.Load()
-	}, time.Second, 10*time.Millisecond, "Broadcast should have been called after setting a new last finality update with supermajority")
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
+	require.Equal(t, true, p2p.BroadcastCalled.Load(), "Broadcast should have been called after setting a new last finality update with supermajority")
 	p2p.BroadcastCalled.Store(false) // Reset for next test
 
 	// update 3 with same finality slot, increased attested slot, and supermajority - should save but not broadcast
@@ -133,7 +132,7 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update3, true)
 	require.Equal(t, update3, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	time.Sleep(50 * time.Millisecond) // Wait briefly to verify broadcast is not called
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
 	require.Equal(t, false, p2p.BroadcastCalled.Load(), "Broadcast should not have been when previous was already broadcast")
 
 	// update 4 with increased finality slot, increased attested slot, and supermajority - should save and broadcast
@@ -147,9 +146,8 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update4, true)
 	require.Equal(t, update4, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	require.Eventually(t, func() bool {
-		return p2p.BroadcastCalled.Load()
-	}, time.Second, 10*time.Millisecond, "Broadcast should have been called after a new finality update with increased finality slot")
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
+	require.Equal(t, true, p2p.BroadcastCalled.Load(), "Broadcast should have been called after a new finality update with increased finality slot")
 	p2p.BroadcastCalled.Store(false) // Reset for next test
 
 	// update 5 with the same new finality slot, increased attested slot, and supermajority - should save but not broadcast
@@ -163,7 +161,7 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update5, true)
 	require.Equal(t, update5, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	time.Sleep(50 * time.Millisecond) // Wait briefly to verify broadcast is not called
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
 	require.Equal(t, false, p2p.BroadcastCalled.Load(), "Broadcast should not have been called when previous was already broadcast with supermajority")
 
 	// update 6 with the same new finality slot, increased attested slot, and no supermajority - should save but not broadcast
@@ -177,7 +175,7 @@ func TestLightClientStore_SetLastFinalityUpdate(t *testing.T) {
 
 	lcStore.SetLastFinalityUpdate(update6, true)
 	require.Equal(t, update6, lcStore.LastFinalityUpdate(), "lastFinalityUpdate should match the set value")
-	time.Sleep(50 * time.Millisecond) // Wait briefly to verify broadcast is not called
+	time.Sleep(timeForGoroutinesToFinish) // give some time for the broadcast goroutine to finish
 	require.Equal(t, false, p2p.BroadcastCalled.Load(), "Broadcast should not have been called when previous was already broadcast with supermajority")
 }
 

beacon-chain/node/BUILD.bazel

@@ -64,6 +64,7 @@ go_library(
         "//monitoring/tracing:go_default_library",
         "//runtime:go_default_library",
         "//runtime/prereqs:go_default_library",
+        "//runtime/version:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",

beacon-chain/node/node.go

@@ -66,6 +66,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/monitoring/prometheus"
 	"github.com/OffchainLabs/prysm/v7/runtime"
 	"github.com/OffchainLabs/prysm/v7/runtime/prereqs"
+	"github.com/OffchainLabs/prysm/v7/runtime/version"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
@@ -468,6 +469,10 @@ func (b *BeaconNode) OperationFeed() event.SubscriberSender {
 func (b *BeaconNode) Start() {
 	b.lock.Lock()
 
+	log.WithFields(logrus.Fields{
+		"version": version.Version(),
+	}).Info("Starting beacon node")
+
 	b.services.StartAll()
 
 	stop := b.stop
@@ -535,12 +540,7 @@ func openDB(ctx context.Context, dbPath string, clearer *dbClearer) (*kv.Store,
 	log.WithField("databasePath", dbPath).Info("Checking DB")
 
 	d, err := kv.NewKVStore(ctx, dbPath)
-	if errors.Is(err, kv.ErrStateDiffIncompatible) {
-		log.WithError(err).Warn("Disabling state-diff feature")
-		cfg := features.Get()
-		cfg.EnableStateDiff = false
-		features.Init(cfg)
-	} else if err != nil {
+	if err != nil {
 		return nil, errors.Wrapf(err, "could not create database at %s", dbPath)
 	}
 

beacon-chain/node/node_test.go

@@ -68,6 +68,7 @@ func TestNodeClose_OK(t *testing.T) {
 }
 
 func TestNodeStart_Ok(t *testing.T) {
+	hook := logTest.NewGlobal()
 	app := cli.App{}
 	tmp := fmt.Sprintf("%s/datadirtest2", t.TempDir())
 	set := flag.NewFlagSet("test", 0)
@@ -96,9 +97,11 @@ func TestNodeStart_Ok(t *testing.T) {
 	}()
 	time.Sleep(3 * time.Second)
 	node.Close()
+	require.LogsContain(t, hook, "Starting beacon node")
 }
 
 func TestNodeStart_SyncChecker(t *testing.T) {
+	hook := logTest.NewGlobal()
 	app := cli.App{}
 	tmp := fmt.Sprintf("%s/datadirtest2", t.TempDir())
 	set := flag.NewFlagSet("test", 0)
@@ -124,6 +127,7 @@ func TestNodeStart_SyncChecker(t *testing.T) {
 	time.Sleep(3 * time.Second)
 	assert.NotNil(t, node.syncChecker.Svc)
 	node.Close()
+	require.LogsContain(t, hook, "Starting beacon node")
 }
 
 // TestClearDB tests clearing the database

beacon-chain/operations/attestations/prepare_forkchoice.go

@@ -49,7 +49,6 @@ func (s *Service) prepareForkChoiceAtts() {
 			}
 		case <-s.ctx.Done():
 			log.Debug("Context closed, exiting routine")
-			ticker.Done()
 			return
 		}
 	}

beacon-chain/p2p/BUILD.bazel

@@ -13,6 +13,8 @@ go_library(
         "doc.go",
         "fork.go",
         "fork_watcher.go",
+        "gossip_peer_controller.go",
+        "gossip_peer_crawler.go",
         "gossip_scoring_params.go",
         "gossip_topic_mappings.go",
         "handshake.go",
@@ -52,6 +54,7 @@ go_library(
         "//beacon-chain/db:go_default_library",
         "//beacon-chain/db/kv:go_default_library",
         "//beacon-chain/p2p/encoder:go_default_library",
+        "//beacon-chain/p2p/gossipcrawler:go_default_library",
         "//beacon-chain/p2p/peers:go_default_library",
         "//beacon-chain/p2p/peers/peerdata:go_default_library",
         "//beacon-chain/p2p/peers/scorers:go_default_library",
@@ -116,6 +119,7 @@ go_library(
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
+        "@org_golang_x_sync//semaphore:go_default_library",
     ],
 )
 
@@ -129,6 +133,8 @@ go_test(
         "dial_relay_node_test.go",
         "discovery_test.go",
         "fork_test.go",
+        "gossip_peer_controller_test.go",
+        "gossip_peer_crawler_test.go",
         "gossip_scoring_params_test.go",
         "gossip_topic_mappings_test.go",
         "message_id_test.go",
@@ -155,9 +161,11 @@ go_test(
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/peerdas:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
+        "//beacon-chain/db:go_default_library",
         "//beacon-chain/db/iface:go_default_library",
         "//beacon-chain/db/testing:go_default_library",
         "//beacon-chain/p2p/encoder:go_default_library",
+        "//beacon-chain/p2p/gossipcrawler:go_default_library",
         "//beacon-chain/p2p/peers:go_default_library",
         "//beacon-chain/p2p/peers/peerdata:go_default_library",
         "//beacon-chain/p2p/peers/scorers:go_default_library",
@@ -204,8 +212,10 @@ go_test(
         "@com_github_libp2p_go_libp2p_pubsub//pb:go_default_library",
         "@com_github_multiformats_go_multiaddr//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
+        "@com_github_prometheus_client_golang//prometheus/testutil:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
+        "@com_github_stretchr_testify//require:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )

beacon-chain/p2p/broadcaster.go

@@ -61,7 +61,10 @@ func (s *Service) Broadcast(ctx context.Context, msg proto.Message) error {
 	if !ok {
 		return errors.Errorf("message of %T does not support marshaller interface", msg)
 	}
-	return s.broadcastObject(ctx, castMsg, fmt.Sprintf(topic, forkDigest))
+
+	fullTopic := fmt.Sprintf(topic, forkDigest) + s.Encoding().ProtocolSuffix()
+
+	return s.broadcastObject(ctx, castMsg, fullTopic)
 }
 
 // BroadcastAttestation broadcasts an attestation to the p2p network, the message is assumed to be
@@ -107,6 +110,7 @@ func (s *Service) BroadcastSyncCommitteeMessage(ctx context.Context, subnet uint
 }
 
 func (s *Service) internalBroadcastAttestation(ctx context.Context, subnet uint64, att ethpb.Att, forkDigest [fieldparams.VersionLength]byte) {
+	topic := AttestationSubnetTopic(forkDigest, subnet)
 	_, span := trace.StartSpan(ctx, "p2p.internalBroadcastAttestation")
 	defer span.End()
 	ctx = trace.NewContext(context.Background(), span) // clear parent context / deadline.
@@ -117,7 +121,7 @@ func (s *Service) internalBroadcastAttestation(ctx context.Context, subnet uint6
 
 	// Ensure we have peers with this subnet.
 	s.subnetLocker(subnet).RLock()
-	hasPeer := s.hasPeerWithSubnet(attestationToTopic(subnet, forkDigest))
+	hasPeer := s.hasPeerWithTopic(topic)
 	s.subnetLocker(subnet).RUnlock()
 
 	span.SetAttributes(
@@ -132,7 +136,7 @@ func (s *Service) internalBroadcastAttestation(ctx context.Context, subnet uint6
 			s.subnetLocker(subnet).Lock()
 			defer s.subnetLocker(subnet).Unlock()
 
-			if err := s.FindAndDialPeersWithSubnets(ctx, AttestationSubnetTopicFormat, forkDigest, minimumPeersPerSubnetForBroadcast, map[uint64]bool{subnet: true}); err != nil {
+			if err := s.gossipDialer.DialPeersForTopicBlocking(ctx, topic, minimumPeersPerSubnetForBroadcast); err != nil {
 				return errors.Wrap(err, "find peers with subnets")
 			}
 
@@ -154,13 +158,14 @@ func (s *Service) internalBroadcastAttestation(ctx context.Context, subnet uint6
 		return
 	}
 
-	if err := s.broadcastObject(ctx, att, attestationToTopic(subnet, forkDigest)); err != nil {
+	if err := s.broadcastObject(ctx, att, topic); err != nil {
 		log.WithError(err).Error("Failed to broadcast attestation")
 		tracing.AnnotateError(span, err)
 	}
 }
 
 func (s *Service) broadcastSyncCommittee(ctx context.Context, subnet uint64, sMsg *ethpb.SyncCommitteeMessage, forkDigest [fieldparams.VersionLength]byte) {
+	topic := SyncCommitteeSubnetTopic(forkDigest, subnet)
 	_, span := trace.StartSpan(ctx, "p2p.broadcastSyncCommittee")
 	defer span.End()
 	ctx = trace.NewContext(context.Background(), span) // clear parent context / deadline.
@@ -174,7 +179,7 @@ func (s *Service) broadcastSyncCommittee(ctx context.Context, subnet uint64, sMs
 	// to ensure that we can reuse the same subnet locker.
 	wrappedSubIdx := subnet + syncLockerVal
 	s.subnetLocker(wrappedSubIdx).RLock()
-	hasPeer := s.hasPeerWithSubnet(syncCommitteeToTopic(subnet, forkDigest))
+	hasPeer := s.hasPeerWithTopic(topic)
 	s.subnetLocker(wrappedSubIdx).RUnlock()
 
 	span.SetAttributes(
@@ -188,7 +193,7 @@ func (s *Service) broadcastSyncCommittee(ctx context.Context, subnet uint64, sMs
 		if err := func() error {
 			s.subnetLocker(wrappedSubIdx).Lock()
 			defer s.subnetLocker(wrappedSubIdx).Unlock()
-			if err := s.FindAndDialPeersWithSubnets(ctx, SyncCommitteeSubnetTopicFormat, forkDigest, minimumPeersPerSubnetForBroadcast, map[uint64]bool{subnet: true}); err != nil {
+			if err := s.gossipDialer.DialPeersForTopicBlocking(ctx, topic, minimumPeersPerSubnetForBroadcast); err != nil {
 				return errors.Wrap(err, "find peers with subnets")
 			}
 
@@ -206,7 +211,7 @@ func (s *Service) broadcastSyncCommittee(ctx context.Context, subnet uint64, sMs
 		return
 	}
 
-	if err := s.broadcastObject(ctx, sMsg, syncCommitteeToTopic(subnet, forkDigest)); err != nil {
+	if err := s.broadcastObject(ctx, sMsg, topic); err != nil {
 		log.WithError(err).Error("Failed to broadcast sync committee message")
 		tracing.AnnotateError(span, err)
 	}
@@ -234,6 +239,7 @@ func (s *Service) BroadcastBlob(ctx context.Context, subnet uint64, blob *ethpb.
 }
 
 func (s *Service) internalBroadcastBlob(ctx context.Context, subnet uint64, blobSidecar *ethpb.BlobSidecar, forkDigest [fieldparams.VersionLength]byte) {
+	topic := BlobSubnetTopic(forkDigest, subnet)
 	_, span := trace.StartSpan(ctx, "p2p.internalBroadcastBlob")
 	defer span.End()
 	ctx = trace.NewContext(context.Background(), span) // clear parent context / deadline.
@@ -244,7 +250,7 @@ func (s *Service) internalBroadcastBlob(ctx context.Context, subnet uint64, blob
 
 	wrappedSubIdx := subnet + blobSubnetLockerVal
 	s.subnetLocker(wrappedSubIdx).RLock()
-	hasPeer := s.hasPeerWithSubnet(blobSubnetToTopic(subnet, forkDigest))
+	hasPeer := s.hasPeerWithTopic(topic)
 	s.subnetLocker(wrappedSubIdx).RUnlock()
 
 	if !hasPeer {
@@ -253,7 +259,7 @@ func (s *Service) internalBroadcastBlob(ctx context.Context, subnet uint64, blob
 			s.subnetLocker(wrappedSubIdx).Lock()
 			defer s.subnetLocker(wrappedSubIdx).Unlock()
 
-			if err := s.FindAndDialPeersWithSubnets(ctx, BlobSubnetTopicFormat, forkDigest, minimumPeersPerSubnetForBroadcast, map[uint64]bool{subnet: true}); err != nil {
+			if err := s.gossipDialer.DialPeersForTopicBlocking(ctx, topic, minimumPeersPerSubnetForBroadcast); err != nil {
 				return errors.Wrap(err, "find peers with subnets")
 			}
 
@@ -265,7 +271,7 @@ func (s *Service) internalBroadcastBlob(ctx context.Context, subnet uint64, blob
 		}
 	}
 
-	if err := s.broadcastObject(ctx, blobSidecar, blobSubnetToTopic(subnet, forkDigest)); err != nil {
+	if err := s.broadcastObject(ctx, blobSidecar, topic); err != nil {
 		log.WithError(err).Error("Failed to broadcast blob sidecar")
 		tracing.AnnotateError(span, err)
 	}
@@ -294,7 +300,7 @@ func (s *Service) BroadcastLightClientOptimisticUpdate(ctx context.Context, upda
 	}
 
 	digest := params.ForkDigest(slots.ToEpoch(update.AttestedHeader().Beacon().Slot))
-	if err := s.broadcastObject(ctx, update, lcOptimisticToTopic(digest)); err != nil {
+	if err := s.broadcastObject(ctx, update, LcOptimisticToTopic(digest)); err != nil {
 		log.WithError(err).Debug("Failed to broadcast light client optimistic update")
 		err := errors.Wrap(err, "could not publish message")
 		tracing.AnnotateError(span, err)
@@ -328,7 +334,7 @@ func (s *Service) BroadcastLightClientFinalityUpdate(ctx context.Context, update
 	}
 
 	forkDigest := params.ForkDigest(slots.ToEpoch(update.AttestedHeader().Beacon().Slot))
-	if err := s.broadcastObject(ctx, update, lcFinalityToTopic(forkDigest)); err != nil {
+	if err := s.broadcastObject(ctx, update, LcFinalityToTopic(forkDigest)); err != nil {
 		log.WithError(err).Debug("Failed to broadcast light client finality update")
 		err := errors.Wrap(err, "could not publish message")
 		tracing.AnnotateError(span, err)
@@ -374,7 +380,7 @@ func (s *Service) broadcastDataColumnSidecars(ctx context.Context, forkDigest [f
 
 	topicFunc := func(sidecar blocks.VerifiedRODataColumn) (topic string, wrappedSubIdx uint64, subnet uint64) {
 		subnet = peerdas.ComputeSubnetForDataColumnSidecar(sidecar.Index)
-		topic = dataColumnSubnetToTopic(subnet, forkDigest)
+		topic = DataColumnSubnetTopic(forkDigest, subnet)
 		wrappedSubIdx = subnet + dataColumnSubnetVal
 		return
 	}
@@ -390,7 +396,7 @@ func (s *Service) broadcastDataColumnSidecars(ctx context.Context, forkDigest [f
 		// Check if we have a peer for this subnet (use RLock for read-only check).
 		mu := s.subnetLocker(wrappedSubIdx)
 		mu.RLock()
-		hasPeer := s.hasPeerWithSubnet(topic)
+		hasPeer := s.hasPeerWithTopic(topic)
 		mu.RUnlock()
 
 		if hasPeer {
@@ -433,10 +439,10 @@ func (s *Service) broadcastDataColumnSidecars(ctx context.Context, forkDigest [f
 			ctx := trace.NewContext(s.ctx, span)
 			defer span.End()
 
-			topic, wrappedSubIdx, subnet := topicFunc(sidecar)
+			topic, wrappedSubIdx, _ := topicFunc(sidecar)
 
 			// Find peers for this sidecar's subnet.
-			if err := s.findPeersIfNeeded(ctx, wrappedSubIdx, DataColumnSubnetTopicFormat, forkDigest, subnet); err != nil {
+			if err := s.findPeersIfNeeded(ctx, wrappedSubIdx, topic); err != nil {
 				tracing.AnnotateError(span, err)
 				log.WithError(err).Error("Cannot find peers if needed")
 				return
@@ -539,41 +545,37 @@ func (s *Service) broadcastDataColumnSidecars(ctx context.Context, forkDigest [f
 func (s *Service) findPeersIfNeeded(
 	ctx context.Context,
 	wrappedSubIdx uint64,
-	topicFormat string,
-	forkDigest [fieldparams.VersionLength]byte,
-	subnet uint64,
+	topic string,
 ) error {
 	// Sending a data column sidecar to only one peer is not ideal,
 	// but it ensures at least one peer receives it.
 	s.subnetLocker(wrappedSubIdx).Lock()
 	defer s.subnetLocker(wrappedSubIdx).Unlock()
 
-	// No peers found, attempt to find peers with this subnet.
-	if err := s.FindAndDialPeersWithSubnets(ctx, topicFormat, forkDigest, minimumPeersPerSubnetForBroadcast, map[uint64]bool{subnet: true}); err != nil {
+	if err := s.gossipDialer.DialPeersForTopicBlocking(ctx, topic, minimumPeersPerSubnetForBroadcast); err != nil {
 		return errors.Wrap(err, "find peers with subnet")
 	}
-
 	return nil
 }
 
 // encodeGossipMessage encodes an object for gossip transmission.
 // It returns the encoded bytes and the full topic with protocol suffix.
-func (s *Service) encodeGossipMessage(obj ssz.Marshaler, topic string) ([]byte, string, error) {
+func (s *Service) encodeGossipMessage(obj ssz.Marshaler) ([]byte, error) {
 	buf := new(bytes.Buffer)
 	if _, err := s.Encoding().EncodeGossip(buf, obj); err != nil {
-		return nil, "", fmt.Errorf("could not encode message: %w", err)
+		return nil, fmt.Errorf("could not encode message: %w", err)
 	}
-	return buf.Bytes(), topic + s.Encoding().ProtocolSuffix(), nil
+	return buf.Bytes(), nil
 }
 
 // broadcastObject broadcasts a message to other peers in our gossip mesh.
-func (s *Service) broadcastObject(ctx context.Context, obj ssz.Marshaler, topic string) error {
+func (s *Service) broadcastObject(ctx context.Context, obj ssz.Marshaler, fullTopic string) error {
 	ctx, span := trace.StartSpan(ctx, "p2p.broadcastObject")
 	defer span.End()
 
-	span.SetAttributes(trace.StringAttribute("topic", topic))
+	span.SetAttributes(trace.StringAttribute("topic", fullTopic))
 
-	data, fullTopic, err := s.encodeGossipMessage(obj, topic)
+	data, err := s.encodeGossipMessage(obj)
 	if err != nil {
 		tracing.AnnotateError(span, err)
 		return err
@@ -597,13 +599,13 @@ func (s *Service) broadcastObject(ctx context.Context, obj ssz.Marshaler, topic
 
 // batchObject adds an object to a message batch for a future broadcast.
 // The caller MUST publish the batch after all messages have been added.
-func (s *Service) batchObject(ctx context.Context, batch *pubsub.MessageBatch, obj ssz.Marshaler, topic string) error {
+func (s *Service) batchObject(ctx context.Context, batch *pubsub.MessageBatch, obj ssz.Marshaler, fullTopic string) error {
 	ctx, span := trace.StartSpan(ctx, "p2p.batchObject")
 	defer span.End()
 
-	span.SetAttributes(trace.StringAttribute("topic", topic))
+	span.SetAttributes(trace.StringAttribute("topic", fullTopic))
 
-	data, fullTopic, err := s.encodeGossipMessage(obj, topic)
+	data, err := s.encodeGossipMessage(obj)
 	if err != nil {
 		tracing.AnnotateError(span, err)
 		return err
@@ -624,27 +626,3 @@ func (s *Service) batchObject(ctx context.Context, batch *pubsub.MessageBatch, o
 	}
 	return nil
 }
-
-func attestationToTopic(subnet uint64, forkDigest [fieldparams.VersionLength]byte) string {
-	return fmt.Sprintf(AttestationSubnetTopicFormat, forkDigest, subnet)
-}
-
-func syncCommitteeToTopic(subnet uint64, forkDigest [fieldparams.VersionLength]byte) string {
-	return fmt.Sprintf(SyncCommitteeSubnetTopicFormat, forkDigest, subnet)
-}
-
-func blobSubnetToTopic(subnet uint64, forkDigest [fieldparams.VersionLength]byte) string {
-	return fmt.Sprintf(BlobSubnetTopicFormat, forkDigest, subnet)
-}
-
-func lcOptimisticToTopic(forkDigest [4]byte) string {
-	return fmt.Sprintf(LightClientOptimisticUpdateTopicFormat, forkDigest)
-}
-
-func lcFinalityToTopic(forkDigest [4]byte) string {
-	return fmt.Sprintf(LightClientFinalityUpdateTopicFormat, forkDigest)
-}
-
-func dataColumnSubnetToTopic(subnet uint64, forkDigest [fieldparams.VersionLength]byte) string {
-	return fmt.Sprintf(DataColumnSubnetTopicFormat, forkDigest, subnet)
-}

beacon-chain/p2p/broadcaster_test.go

@@ -30,6 +30,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/testing/require"
 	"github.com/OffchainLabs/prysm/v7/testing/util"
 	"github.com/OffchainLabs/prysm/v7/time/slots"
+	"github.com/ethereum/go-ethereum/p2p/enode"
 	pubsub "github.com/libp2p/go-libp2p-pubsub"
 	"github.com/libp2p/go-libp2p/core/host"
 	"github.com/libp2p/go-libp2p/core/peer"
@@ -72,10 +73,7 @@ func TestService_Broadcast(t *testing.T) {
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -114,6 +112,7 @@ func TestService_Attestation_Subnet(t *testing.T) {
 	if gtm := GossipTypeMapping[reflect.TypeFor[*ethpb.Attestation]()]; gtm != AttestationSubnetTopicFormat {
 		t.Errorf("Constant is out of date. Wanted %s, got %s", AttestationSubnetTopicFormat, gtm)
 	}
+	s := Service{}
 
 	tests := []struct {
 		att   *ethpb.Attestation
@@ -126,7 +125,7 @@ func TestService_Attestation_Subnet(t *testing.T) {
 					Slot:           2,
 				},
 			},
-			topic: "/eth2/00000000/beacon_attestation_2",
+			topic: "/eth2/00000000/beacon_attestation_2" + s.Encoding().ProtocolSuffix(),
 		},
 		{
 			att: &ethpb.Attestation{
@@ -135,7 +134,7 @@ func TestService_Attestation_Subnet(t *testing.T) {
 					Slot:           10,
 				},
 			},
-			topic: "/eth2/00000000/beacon_attestation_21",
+			topic: "/eth2/00000000/beacon_attestation_21" + s.Encoding().ProtocolSuffix(),
 		},
 		{
 			att: &ethpb.Attestation{
@@ -144,12 +143,12 @@ func TestService_Attestation_Subnet(t *testing.T) {
 					Slot:           529,
 				},
 			},
-			topic: "/eth2/00000000/beacon_attestation_8",
+			topic: "/eth2/00000000/beacon_attestation_8" + s.Encoding().ProtocolSuffix(),
 		},
 	}
 	for _, tt := range tests {
 		subnet := helpers.ComputeSubnetFromCommitteeAndSlot(100, tt.att.Data.CommitteeIndex, tt.att.Data.Slot)
-		assert.Equal(t, tt.topic, attestationToTopic(subnet, [4]byte{} /* fork digest */), "Wrong topic")
+		assert.Equal(t, tt.topic, AttestationSubnetTopic([4]byte{}, subnet), "Wrong topic")
 	}
 }
 
@@ -178,21 +177,16 @@ func TestService_BroadcastAttestation(t *testing.T) {
 	msg := util.HydrateAttestation(&ethpb.Attestation{AggregationBits: bitfield.NewBitlist(7)})
 	subnet := uint64(5)
 
-	topic := AttestationSubnetTopicFormat
-	GossipTypeMapping[reflect.TypeFor[*ethpb.Attestation]()] = topic
+	GossipTypeMapping[reflect.TypeFor[*ethpb.Attestation]()] = AttestationSubnetTopicFormat
 	digest, err := p.currentForkDigest()
 	require.NoError(t, err)
-	topic = fmt.Sprintf(topic, digest, subnet)
+	topic := AttestationSubnetTopic(digest, subnet)
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -234,6 +228,7 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 	// Setup bootnode.
 	cfg := &Config{PingInterval: testPingInterval, DB: db}
 	cfg.UDPPort = uint(port)
+	cfg.TCPPort = uint(port)
 	_, pkey := createAddrAndPrivKey(t)
 	ipAddr := net.ParseIP("127.0.0.1")
 	genesisTime := time.Now()
@@ -259,8 +254,9 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 
 	var listeners []*listenerWrapper
 	var hosts []host.Host
+	var configs []*Config
 	// setup other nodes.
-	cfg = &Config{
+	baseCfg := &Config{
 		Discv5BootStrapAddrs: []string{bootNode.String()},
 		MaxPeers:             2,
 		PingInterval:         testPingInterval,
@@ -269,11 +265,21 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 	// Setup 2 different hosts
 	for i := uint(1); i <= 2; i++ {
 		h, pkey, ipAddr := createHost(t, port+i)
-		cfg.UDPPort = uint(port + i)
-		cfg.TCPPort = uint(port + i)
+
+		// Create a new config for each service to avoid shared mutations
+		cfg := &Config{
+			Discv5BootStrapAddrs: baseCfg.Discv5BootStrapAddrs,
+			MaxPeers:             baseCfg.MaxPeers,
+			PingInterval:         baseCfg.PingInterval,
+			DB:                   baseCfg.DB,
+			UDPPort:              uint(port + i),
+			TCPPort:              uint(port + i),
+		}
+
 		if len(listeners) > 0 {
 			cfg.Discv5BootStrapAddrs = append(cfg.Discv5BootStrapAddrs, listeners[len(listeners)-1].Self().String())
 		}
+
 		s := &Service{
 			cfg:                   cfg,
 			genesisTime:           genesisTime,
@@ -286,18 +292,22 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 		close(s.custodyInfoSet)
 
 		listener, err := s.startDiscoveryV5(ipAddr, pkey)
-		// Set for 2nd peer
+		assert.NoError(t, err, "Could not start discovery for node")
+
+		// Set listener for the service
+		s.dv5Listener = listener
+		s.metaData = wrapper.WrappedMetadataV0(new(ethpb.MetaDataV0))
+
+		// Set subnet for 2nd peer
 		if i == 2 {
-			s.dv5Listener = listener
-			s.metaData = wrapper.WrappedMetadataV0(new(ethpb.MetaDataV0))
 			bitV := bitfield.NewBitvector64()
 			bitV.SetBitAt(subnet, true)
 			err := s.updateSubnetRecordWithMetadata(bitV)
 			require.NoError(t, err)
 		}
-		assert.NoError(t, err, "Could not start discovery for node")
 		listeners = append(listeners, listener)
 		hosts = append(hosts, h)
+		configs = append(configs, cfg)
 	}
 	defer func() {
 		// Close down all peers.
@@ -332,7 +342,7 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 		pubsub:                ps1,
 		dv5Listener:           listeners[0],
 		joinedTopics:          map[string]*pubsub.Topic{},
-		cfg:                   cfg,
+		cfg:                   configs[0],
 		genesisTime:           time.Now(),
 		genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
 		subnetsLock:           make(map[uint64]*sync.RWMutex),
@@ -348,7 +358,7 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 		pubsub:                ps2,
 		dv5Listener:           listeners[1],
 		joinedTopics:          map[string]*pubsub.Topic{},
-		cfg:                   cfg,
+		cfg:                   configs[1],
 		genesisTime:           time.Now(),
 		genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
 		subnetsLock:           make(map[uint64]*sync.RWMutex),
@@ -361,14 +371,12 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 	go p2.listenForNewNodes()
 
 	msg := util.HydrateAttestation(&ethpb.Attestation{AggregationBits: bitfield.NewBitlist(7)})
-	topic := AttestationSubnetTopicFormat
-	GossipTypeMapping[reflect.TypeFor[*ethpb.Attestation]()] = topic
+	GossipTypeMapping[reflect.TypeFor[*ethpb.Attestation]()] = AttestationSubnetTopicFormat
 	digest, err := p.currentForkDigest()
 	require.NoError(t, err)
-	topic = fmt.Sprintf(topic, digest, subnet)
+	topic := AttestationSubnetTopic(digest, subnet)
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	// We don't use our internal subscribe method
 	// due to using floodsub over here.
 	tpHandle, err := p2.JoinTopic(topic)
@@ -381,15 +389,7 @@ func TestService_BroadcastAttestationWithDiscoveryAttempts(t *testing.T) {
 	_, err = tpHandle.Subscribe()
 	require.NoError(t, err)
 
-	// This test specifically tests discovery-based peer finding, which requires
-	// time for nodes to discover each other. Using a fixed sleep here is intentional
-	// as we're testing the discovery timing behavior.
-	time.Sleep(500 * time.Millisecond)
-
-	// Verify mesh establishment after discovery
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0 && len(p2.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(500 * time.Millisecond) // libp2p fails without this delay...
 
 	nodePeers := p.pubsub.ListPeers(topic)
 	nodePeers2 := p2.pubsub.ListPeers(topic)
@@ -447,21 +447,16 @@ func TestService_BroadcastSyncCommittee(t *testing.T) {
 	msg := util.HydrateSyncCommittee(&ethpb.SyncCommitteeMessage{})
 	subnet := uint64(5)
 
-	topic := SyncCommitteeSubnetTopicFormat
-	GossipTypeMapping[reflect.TypeFor[*ethpb.SyncCommitteeMessage]()] = topic
+	GossipTypeMapping[reflect.TypeFor[*ethpb.SyncCommitteeMessage]()] = SyncCommitteeSubnetTopicFormat
 	digest, err := p.currentForkDigest()
 	require.NoError(t, err)
-	topic = fmt.Sprintf(topic, digest, subnet)
+	topic := SyncCommitteeSubnetTopic(digest, subnet)
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -527,21 +522,16 @@ func TestService_BroadcastBlob(t *testing.T) {
 	}
 	subnet := uint64(0)
 
-	topic := BlobSubnetTopicFormat
-	GossipTypeMapping[reflect.TypeFor[*ethpb.BlobSidecar]()] = topic
+	GossipTypeMapping[reflect.TypeFor[*ethpb.BlobSidecar]()] = BlobSubnetTopicFormat
 	digest, err := p.currentForkDigest()
 	require.NoError(t, err)
-	topic = fmt.Sprintf(topic, digest, subnet)
+	topic := BlobSubnetTopic(digest, subnet)
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -597,17 +587,13 @@ func TestService_BroadcastLightClientOptimisticUpdate(t *testing.T) {
 	require.NoError(t, err)
 
 	GossipTypeMapping[reflect.TypeOf(msg)] = LightClientOptimisticUpdateTopicFormat
-	topic := fmt.Sprintf(LightClientOptimisticUpdateTopicFormat, params.ForkDigest(slots.ToEpoch(msg.AttestedHeader().Beacon().Slot)))
+	topic := LcOptimisticToTopic(params.ForkDigest(slots.ToEpoch(msg.AttestedHeader().Beacon().Slot)))
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -676,17 +662,13 @@ func TestService_BroadcastLightClientFinalityUpdate(t *testing.T) {
 	require.NoError(t, err)
 
 	GossipTypeMapping[reflect.TypeOf(msg)] = LightClientFinalityUpdateTopicFormat
-	topic := fmt.Sprintf(LightClientFinalityUpdateTopicFormat, params.ForkDigest(slots.ToEpoch(msg.AttestedHeader().Beacon().Slot)))
+	topic := LcFinalityToTopic(params.ForkDigest(slots.ToEpoch(msg.AttestedHeader().Beacon().Slot)))
 
 	// External peer subscribes to the topic.
-	topic += p.Encoding().ProtocolSuffix()
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(p.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
 
 	// Async listen for the pubsub, must be before the broadcast.
 	var wg sync.WaitGroup
@@ -730,7 +712,6 @@ func TestService_BroadcastDataColumn(t *testing.T) {
 	const (
 		port        = 2000
 		columnIndex = 12
-		topicFormat = DataColumnSubnetTopicFormat
 	)
 
 	ctx := t.Context()
@@ -788,7 +769,17 @@ func TestService_BroadcastDataColumn(t *testing.T) {
 	require.NoError(t, err)
 
 	subnet := peerdas.ComputeSubnetForDataColumnSidecar(columnIndex)
-	topic := fmt.Sprintf(topicFormat, digest, subnet) + service.Encoding().ProtocolSuffix()
+	topic := DataColumnSubnetTopic(digest, subnet)
+
+	crawler, err := NewGossipPeerCrawler(t.Context(), service, listener, 1*time.Second, 1*time.Second, 10,
+		func(n *enode.Node) bool { return true },
+		service.Peers().Scorers().Score)
+	require.NoError(t, err)
+	err = crawler.Start(func(ctx context.Context, node *enode.Node) ([]string, error) {
+		return []string{topic}, nil
+	})
+	require.NoError(t, err)
+	service.gossipDialer = NewGossipPeerDialer(t.Context(), crawler, service.PubSub().ListPeers, service.DialPeers)
 
 	_, verifiedRoSidecars := util.CreateTestVerifiedRoDataColumnSidecars(t, []util.DataColumnParam{{Index: columnIndex}})
 	verifiedRoSidecar := verifiedRoSidecars[0]
@@ -797,10 +788,8 @@ func TestService_BroadcastDataColumn(t *testing.T) {
 	sub, err := p2.SubscribeToTopic(topic)
 	require.NoError(t, err)
 
-	// Wait for libp2p mesh to establish
-	require.Eventually(t, func() bool {
-		return len(service.pubsub.ListPeers(topic)) > 0
-	}, 5*time.Second, 10*time.Millisecond, "libp2p mesh did not establish")
+	// libp2p fails without this delay
+	time.Sleep(50 * time.Millisecond)
 
 	// Broadcast to peers and wait.
 	err = service.BroadcastDataColumnSidecars(ctx, []blocks.VerifiedRODataColumn{verifiedRoSidecar})

beacon-chain/p2p/discovery.go

@@ -369,11 +369,11 @@ func (s *Service) listenForNewNodes() {
 	}
 }
 
-// FindAndDialPeersWithSubnets ensures that our node is connected to enough peers.
-// If, the threshold is met, then this function immediately returns.
+// findAndDialPeers ensures that our node is connected to enough peers.
+// If the threshold is met, then this function immediately returns.
 // Otherwise, it searches for new peers and dials them.
-// If `ctx“ is canceled while searching for peers, search is stopped, but new found peers are still dialed.
-// In this case, the function returns an error.
+// If `ctx` is canceled while searching for peers, search is stopped, but newly
+// found peers are still dialed. In this case, the function returns an error.
 func (s *Service) findAndDialPeers(ctx context.Context) error {
 	// Restrict dials if limit is applied.
 	maxConcurrentDials := math.MaxInt
@@ -404,8 +404,7 @@ func (s *Service) findAndDialPeers(ctx context.Context) error {
 			return err
 		}
 
-		dialedPeerCount := s.dialPeers(s.ctx, maxConcurrentDials, peersToDial)
-
+		dialedPeerCount := s.DialPeers(s.ctx, maxConcurrentDials, peersToDial)
 		if dialedPeerCount > missingPeerCount {
 			missingPeerCount = 0
 			continue
@@ -554,6 +553,7 @@ func (s *Service) createListener(
 		Bootnodes:               bootNodes,
 		PingInterval:            s.cfg.PingInterval,
 		NoFindnodeLivenessCheck: s.cfg.DisableLivenessCheck,
+		V5RespTimeout:           300 * time.Millisecond,
 	}
 
 	listener, err := discover.ListenV5(conn, localNode, dv5Cfg)

beacon-chain/p2p/discovery_test.go

@@ -482,12 +482,12 @@ func TestStaticPeering_PeersAreAdded(t *testing.T) {
 		s.Start()
 		<-exitRoutine
 	}()
-	time.Sleep(50 * time.Millisecond) // Wait for service initialization
+	time.Sleep(50 * time.Millisecond)
 	var vr [32]byte
 	require.NoError(t, cs.SetClock(startup.NewClock(time.Now(), vr)))
-	require.Eventually(t, func() bool {
-		return len(s.host.Network().Peers()) == 5
-	}, 10*time.Second, 100*time.Millisecond, "Not all peers added to peerstore")
+	time.Sleep(4 * time.Second)
+	ps := s.host.Network().Peers()
+	assert.Equal(t, 5, len(ps), "Not all peers added to peerstore")
 	require.NoError(t, s.Stop())
 	exitRoutine <- true
 }

beacon-chain/p2p/gossip_peer_controller.go

@@ -0,0 +1,343 @@
+package p2p
+
+import (
+	"context"
+	"math"
+	"slices"
+	"sync"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
+	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/libp2p/go-libp2p/core/peer"
+)
+
+const dialInterval = 500 * time.Millisecond
+const peerCountLogInterval = 5 * time.Minute
+const topicMonitorInterval = 200 * time.Millisecond
+
+// GossipPeerDialer maintains minimum peer counts for gossip topics by periodically
+// dialing new peers discovered by a crawler. It runs a background loop that checks each
+// topic's peer count and dials new peers when below the target threshold.
+type GossipPeerDialer struct {
+	ctx context.Context
+
+	listPeers func(topic string) []peer.ID
+	dialPeers func(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint
+
+	crawler        gossipcrawler.Crawler
+	topicsProvider gossipcrawler.SubnetTopicsProvider
+
+	cachedTopics map[string]int
+
+	once sync.Once
+}
+
+// NewGossipPeerDialer creates a new GossipPeerDialer instance.
+//
+// Parameters:
+//   - ctx: Parent context that controls the lifecycle of the dialer. When cancelled,
+//     the background dial loop will terminate.
+//   - crawler: Source of peer candidates for each topic. The crawler maintains a registry
+//     of peers discovered through DHT crawling, indexed by the topics they subscribe to.
+//   - listPeers: Function that returns the current peers connected for a given topic.
+//     Used to determine how many additional peers need to be dialed.
+//   - dialPeers: Function that dials the given enode.Node peers with a concurrency limit.
+//     Returns the number of successful dials.
+//
+// The dialer must be started with Start() before it begins maintaining peer counts.
+func NewGossipPeerDialer(
+	ctx context.Context,
+	crawler gossipcrawler.Crawler,
+	listPeers func(topic string) []peer.ID,
+	dialPeers func(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint,
+) *GossipPeerDialer {
+	return &GossipPeerDialer{
+		ctx:       ctx,
+		listPeers: listPeers,
+		dialPeers: dialPeers,
+		crawler:   crawler,
+	}
+}
+
+// Start begins the background dial loop that maintains peer counts for all topics.
+//
+// The provider function is called on each tick to get the current list of topics that
+// need peer maintenance. This allows the set of topics to change dynamically as the node
+// subscribes/unsubscribes from subnets.
+//
+// Start is idempotent - calling it multiple times has no effect after the first call.
+// Only the provider from the first call will be used; subsequent calls are ignored.
+//
+// The dial loop runs every dialInterval (1 second) and for each topic:
+//  1. Checks current peer count via listPeers()
+//  2. If below the per-topic min peer count, requests candidates from the crawler
+//  3. Deduplicates peers across all topics to avoid redundant dials
+//  4. Dials missing peers with rate limiting if enabled
+//
+// Returns nil always (error return preserved for interface compatibility).
+func (g *GossipPeerDialer) Start(provider gossipcrawler.SubnetTopicsProvider) error {
+	g.once.Do(func() {
+		g.topicsProvider = provider
+		g.cachedTopics = make(map[string]int)
+		go g.dialLoop()
+		go g.logPeerCountsLoop()
+		go g.topicMonitorLoop()
+	})
+
+	return nil
+}
+
+func (g *GossipPeerDialer) dialLoop() {
+	ticker := time.NewTicker(dialInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			peersToDial := g.selectPeersForTopics()
+			if len(peersToDial) == 0 {
+				continue
+			}
+			g.dialPeersWithRatelimiting(peersToDial)
+
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+func (g *GossipPeerDialer) logPeerCountsLoop() {
+	ticker := time.NewTicker(peerCountLogInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			topics := g.topicsProvider()
+			for topic, minPeers := range topics {
+				currentPeers := len(g.listPeers(topic))
+				log.WithField("topic", topic).
+					WithField("currentPeers", currentPeers).
+					WithField("minPeers", minPeers).
+					Debug("Gossip topic peer count")
+			}
+
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+// topicsChanged compares the new topics with cached topics and returns true
+// if topics have been added or removed. Changes to min peer counts are ignored.
+func (g *GossipPeerDialer) topicsChanged(newTopics map[string]int) bool {
+	if len(newTopics) != len(g.cachedTopics) {
+		return true
+	}
+	for topic := range newTopics {
+		if _, ok := g.cachedTopics[topic]; !ok {
+			return true
+		}
+	}
+	return false
+}
+
+func (g *GossipPeerDialer) topicMonitorLoop() {
+	ticker := time.NewTicker(topicMonitorInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			topics := g.topicsProvider()
+			if g.topicsChanged(topics) {
+				g.cachedTopics = topics
+				g.crawler.TriggerCrawl()
+			}
+
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+// selectPeersForTopics builds a bidirectional mapping of topics to peers and selects
+// peers to dial using a greedy algorithm that prioritizes peers serving multiple topics.
+// When a peer is selected, the needed count is decremented for ALL topics that peer serves,
+// avoiding redundant dials when one peer can satisfy multiple topic requirements.
+func (g *GossipPeerDialer) selectPeersForTopics() []*enode.Node {
+	topicsWithMinPeers := g.topicsProvider()
+
+	// Calculate how many peers each topic still needs.
+	neededByTopic := make(map[string]int)
+	for topic, minPeers := range topicsWithMinPeers {
+		currentCount := len(g.listPeers(topic))
+		if needed := minPeers - currentCount; needed > 0 {
+			neededByTopic[topic] = needed
+		}
+	}
+
+	if len(neededByTopic) == 0 {
+		return nil
+	}
+
+	peerToTopics := make(map[enode.ID][]string)
+	nodeByID := make(map[enode.ID]*enode.Node)
+
+	for topic := range neededByTopic {
+		candidates := g.crawler.PeersForTopic(topic)
+		for _, node := range candidates {
+			id := node.ID()
+			if _, exists := nodeByID[id]; !exists {
+				nodeByID[id] = node
+			}
+			peerToTopics[id] = append(peerToTopics[id], topic)
+		}
+	}
+
+	// Build candidate list sorted by topic count (descending).
+	// Peers serving more topics are prioritized.
+	type candidate struct {
+		node   *enode.Node
+		topics []string
+	}
+	candidates := make([]candidate, 0, len(peerToTopics))
+	for id, topics := range peerToTopics {
+		candidates = append(candidates, candidate{node: nodeByID[id], topics: topics})
+	}
+
+	// sort candidates by topic count (descending)
+	slices.SortFunc(candidates, func(a, b candidate) int {
+		return len(b.topics) - len(a.topics)
+	})
+
+	// Greedy selection with cross-topic accounting.
+	var selected []*enode.Node
+	for _, c := range candidates {
+		// Check if this peer serves any topic we still need.
+		servesNeededTopic := false
+		for _, topic := range c.topics {
+			if neededByTopic[topic] > 0 {
+				servesNeededTopic = true
+				break
+			}
+		}
+
+		if !servesNeededTopic {
+			continue
+		}
+
+		// Select this peer and decrement needed count for ALL topics it serves.
+		selected = append(selected, c.node)
+		for _, topic := range c.topics {
+			if neededByTopic[topic] > 0 {
+				neededByTopic[topic]--
+			}
+		}
+	}
+
+	return selected
+}
+
+// DialPeersForTopicBlocking blocks until the specified topic has at least nPeers connected,
+// or until the context is cancelled.
+//
+// This method is useful when you need to ensure a minimum number of peers are connected
+// for a specific topic before proceeding (e.g., before publishing a message).
+//
+// The method polls in a loop:
+//  1. Check if current peer count >= nPeers, return nil if satisfied
+//  2. Get peer candidates from crawler for this topic
+//  3. Dial candidates with rate limiting
+//  4. Wait 100ms for connections to establish in pubsub layer
+//  5. Repeat until target reached or context cancelled
+//
+// Parameters:
+//   - ctx: Context to cancel the blocking operation. Takes precedence for cancellation.
+//   - topic: The gossipsub topic to ensure peers for.
+//   - nPeers: Minimum number of peers required before returning.
+//
+// Returns:
+//   - nil: Successfully reached the target peer count.
+//   - ctx.Err(): The provided context was cancelled.
+//   - g.ctx.Err(): The dialer's parent context was cancelled.
+//
+// Note: This may block indefinitely if the crawler cannot provide enough peers
+// and the context has no deadline.
+func (g *GossipPeerDialer) DialPeersForTopicBlocking(ctx context.Context, topic string, nPeers int) error {
+	for {
+		peers := g.listPeers(topic)
+		if len(peers) >= nPeers {
+			return nil
+		}
+
+		newPeers := g.peersForTopic(topic, nPeers)
+		if len(newPeers) > 0 {
+			g.dialPeersWithRatelimiting(newPeers)
+		}
+
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+			// some wait here is good after dialing as connections take some time to show up in pubsub
+		case <-time.After(100 * time.Millisecond):
+		case <-g.ctx.Done():
+			return g.ctx.Err()
+		}
+	}
+}
+
+func (g *GossipPeerDialer) peersForTopic(topic string, targetCount int) []*enode.Node {
+	peers := g.listPeers(topic)
+	peerCount := len(peers)
+	if peerCount >= targetCount {
+		return nil
+	}
+	missing := targetCount - peerCount
+	newPeers := g.crawler.PeersForTopic(topic)
+	if len(newPeers) > missing {
+		newPeers = newPeers[:missing]
+	}
+	return newPeers
+}
+
+// ProtectedPeers returns peer IDs that should be protected from pruning.
+// For each topic, one connected peer is marked as protected to ensure
+// we maintain connectivity to all subscribed topics.
+func (g *GossipPeerDialer) ProtectedPeers() []peer.ID {
+	if g.topicsProvider == nil {
+		return nil
+	}
+
+	topics := g.topicsProvider()
+	protectedPeers := make(map[peer.ID]struct{})
+
+	for topic := range topics {
+		connectedPeers := g.listPeers(topic)
+
+		// Skip if no peers connected
+		if len(connectedPeers) == 0 {
+			continue
+		}
+
+		// Protect the first peer for this topic
+		protectedPeers[connectedPeers[0]] = struct{}{}
+	}
+
+	result := make([]peer.ID, 0, len(protectedPeers))
+	for pid := range protectedPeers {
+		result = append(result, pid)
+	}
+	return result
+}
+
+func (g *GossipPeerDialer) dialPeersWithRatelimiting(peers []*enode.Node) {
+	// Dial new peers in batches.
+	maxConcurrentDials := math.MaxInt
+	if flags.MaxDialIsActive() {
+		maxConcurrentDials = flags.Get().MaxConcurrentDials
+	}
+	g.dialPeers(g.ctx, maxConcurrentDials, peers)
+}

beacon-chain/p2p/gossip_peer_controller_test.go

@@ -0,0 +1,691 @@
+package p2p
+
+import (
+	"context"
+	"crypto/rand"
+	"net"
+	"slices"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
+	"github.com/OffchainLabs/prysm/v7/crypto/ecdsa"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/ethereum/go-ethereum/p2p/enr"
+	"github.com/libp2p/go-libp2p/core/crypto"
+	"github.com/libp2p/go-libp2p/core/peer"
+	"github.com/stretchr/testify/require"
+)
+
+func TestGossipPeerDialer_Start(t *testing.T) {
+	tests := []struct {
+		name             string
+		newCrawler       func(t *testing.T) *mockCrawler
+		provider         gossipcrawler.SubnetTopicsProvider
+		expectedConnects int
+		expectStartErr   bool
+	}{
+		{
+			name: "dials unique peers across topics",
+			newCrawler: func(t *testing.T) *mockCrawler {
+				nodeA := newTestNode(t, "127.0.0.1", 30101)
+				nodeB := newTestNode(t, "127.0.0.1", 30102)
+				return &mockCrawler{
+					consume: true,
+					peers: map[string][]*enode.Node{
+						"topic/a": {nodeA, nodeB},
+						"topic/b": {nodeA},
+					},
+				}
+			},
+			provider: func() map[string]int {
+				return map[string]int{"topic/a": 2, "topic/b": 2}
+			},
+			expectedConnects: 2,
+		},
+		{
+			name: "uses per-topic min peer counts",
+			newCrawler: func(t *testing.T) *mockCrawler {
+				nodes := make([]*enode.Node, 5)
+				for i := range nodes {
+					nodes[i] = newTestNode(t, "127.0.0.1", uint16(30110+i))
+				}
+				return &mockCrawler{
+					consume: true,
+					peers: map[string][]*enode.Node{
+						// topic/mesh has 3 available peers, minPeers=2 -> should dial 2
+						"topic/mesh": {nodes[0], nodes[1], nodes[2]},
+						// topic/fanout has 3 available peers, minPeers=1 -> should dial 1
+						"topic/fanout": {nodes[3], nodes[4]},
+					},
+				}
+			},
+			provider: func() map[string]int {
+				return map[string]int{
+					"topic/mesh":   2,
+					"topic/fanout": 1,
+				}
+			},
+			// Total: 2 from mesh + 1 from fanout = 3 peers dialed
+			expectedConnects: 3,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			md := &mockDialer{}
+			listPeers := func(topic string) []peer.ID { return nil }
+
+			dialer := NewGossipPeerDialer(t.Context(), tt.newCrawler(t), listPeers, md.DialPeers)
+
+			err := dialer.Start(tt.provider)
+			if tt.expectStartErr {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+
+			require.Eventually(t, func() bool {
+				return md.dialCount() >= tt.expectedConnects
+			}, 2*time.Second, 20*time.Millisecond)
+
+			require.Equal(t, tt.expectedConnects, md.dialCount())
+		})
+	}
+}
+
+func TestGossipPeerDialer_DialPeersForTopicBlocking(t *testing.T) {
+	tests := []struct {
+		name             string
+		connectedPeers   int
+		newCrawler       func(t *testing.T) *mockCrawler
+		targetPeers      int
+		ctx              func() (context.Context, context.CancelFunc)
+		expectedConnects int
+		expectErr        bool
+	}{
+		{
+			name:           "returns immediately when enough peers",
+			connectedPeers: 1,
+			newCrawler: func(t *testing.T) *mockCrawler {
+				return &mockCrawler{}
+			},
+			targetPeers:      1,
+			ctx:              func() (context.Context, context.CancelFunc) { return context.WithCancel(context.Background()) },
+			expectedConnects: 0,
+			expectErr:        false,
+		},
+		{
+			name:           "dials when peers are missing",
+			connectedPeers: 0,
+			newCrawler: func(t *testing.T) *mockCrawler {
+				nodeA := newTestNode(t, "127.0.0.1", 30201)
+				nodeB := newTestNode(t, "127.0.0.1", 30202)
+				return &mockCrawler{
+					peers: map[string][]*enode.Node{
+						"topic/a": {nodeA, nodeB},
+					},
+				}
+			},
+			targetPeers: 2,
+			ctx: func() (context.Context, context.CancelFunc) {
+				return context.WithTimeout(context.Background(), 1*time.Second)
+			},
+			expectedConnects: 2,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			md := &mockDialer{}
+			var mu sync.Mutex
+			connected := make([]peer.ID, 0)
+			for i := 0; i < tt.connectedPeers; i++ {
+				connected = append(connected, peer.ID(string(rune(i))))
+			}
+
+			listPeers := func(topic string) []peer.ID {
+				mu.Lock()
+				defer mu.Unlock()
+				return connected
+			}
+
+			dialPeers := func(ctx context.Context, max int, nodes []*enode.Node) uint {
+				cnt := md.DialPeers(ctx, max, nodes)
+				mu.Lock()
+				defer mu.Unlock()
+				for range nodes {
+					// Just add a dummy peer ID to simulate connection success
+					connected = append(connected, peer.ID("dummy"))
+				}
+				return cnt
+			}
+
+			crawler := tt.newCrawler(t)
+			dialer := NewGossipPeerDialer(t.Context(), crawler, listPeers, dialPeers)
+			topic := "topic/a"
+
+			ctx, cancel := tt.ctx()
+			defer cancel()
+
+			err := dialer.DialPeersForTopicBlocking(ctx, topic, tt.targetPeers)
+			if tt.expectErr {
+				require.Error(t, err)
+			} else {
+				require.NoError(t, err)
+			}
+
+			require.Equal(t, tt.expectedConnects, md.dialCount())
+		})
+	}
+}
+
+func TestGossipPeerDialer_peersForTopic(t *testing.T) {
+	tests := []struct {
+		name        string
+		connected   int
+		targetCount int
+		buildPeers  func(t *testing.T) ([]*enode.Node, []*enode.Node)
+	}{
+		{
+			name:        "returns nil when enough peers already connected",
+			connected:   1,
+			targetCount: 1,
+			buildPeers: func(t *testing.T) ([]*enode.Node, []*enode.Node) {
+				return []*enode.Node{newTestNode(t, "127.0.0.1", 30301)}, nil
+			},
+		},
+		{
+			name:        "returns crawler peers when none connected",
+			connected:   0,
+			targetCount: 2,
+			buildPeers: func(t *testing.T) ([]*enode.Node, []*enode.Node) {
+				nodeA := newTestNode(t, "127.0.0.1", 30311)
+				nodeB := newTestNode(t, "127.0.0.1", 30312)
+				return []*enode.Node{nodeA, nodeB}, []*enode.Node{nodeA, nodeB}
+			},
+		},
+		{
+			name:        "truncates peers when more than needed",
+			connected:   0,
+			targetCount: 1,
+			buildPeers: func(t *testing.T) ([]*enode.Node, []*enode.Node) {
+				nodeA := newTestNode(t, "127.0.0.1", 30321)
+				nodeB := newTestNode(t, "127.0.0.1", 30322)
+				nodeC := newTestNode(t, "127.0.0.1", 30323)
+				return []*enode.Node{nodeA, nodeB, nodeC}, []*enode.Node{nodeA}
+			},
+		},
+		{
+			name:        "only returns missing peers",
+			connected:   1,
+			targetCount: 3,
+			buildPeers: func(t *testing.T) ([]*enode.Node, []*enode.Node) {
+				nodeA := newTestNode(t, "127.0.0.1", 30331)
+				nodeB := newTestNode(t, "127.0.0.1", 30332)
+				nodeC := newTestNode(t, "127.0.0.1", 30333)
+				return []*enode.Node{nodeA, nodeB, nodeC}, []*enode.Node{nodeA, nodeB}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			listPeers := func(topic string) []peer.ID {
+				peers := make([]peer.ID, tt.connected)
+				for i := 0; i < tt.connected; i++ {
+					peers[i] = peer.ID(string(rune(i))) // Fake peer ID
+				}
+				return peers
+			}
+
+			crawlerPeers, expected := tt.buildPeers(t)
+			crawler := &mockCrawler{
+				peers:   map[string][]*enode.Node{"topic/test": crawlerPeers},
+				consume: false,
+			}
+			dialer := NewGossipPeerDialer(t.Context(), crawler, listPeers, func(ctx context.Context,
+				maxConcurrentDials int, nodes []*enode.Node) uint {
+				return 0
+			})
+
+			got := dialer.peersForTopic("topic/test", tt.targetCount)
+			if expected == nil {
+				require.Nil(t, got)
+				return
+			}
+
+			require.Equal(t, len(expected), len(got))
+
+			for i := range expected {
+				require.Equal(t, expected[i], got[i])
+			}
+		})
+	}
+}
+
+func TestGossipPeerDialer_selectPeersForTopics(t *testing.T) {
+	tests := []struct {
+		name           string
+		connectedPeers map[string]int // topic -> connected peer count
+		topicsProvider func() map[string]int
+		buildPeers     func(t *testing.T) (map[string][]*enode.Node, []*enode.Node)
+	}{
+		{
+			name:           "prioritizes multi-topic peer over single-topic peers",
+			connectedPeers: map[string]int{},
+			topicsProvider: func() map[string]int {
+				return map[string]int{
+					"topic/a": 1,
+					"topic/b": 1,
+					"topic/c": 1,
+				}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				// Peer X serves all 3 topics
+				nodeX := newTestNode(t, "127.0.0.1", 30401)
+				// Peer Y serves only topic/a
+				nodeY := newTestNode(t, "127.0.0.1", 30402)
+				// Peer Z serves only topic/b
+				nodeZ := newTestNode(t, "127.0.0.1", 30403)
+
+				crawlerPeers := map[string][]*enode.Node{
+					"topic/a": {nodeX, nodeY},
+					"topic/b": {nodeX, nodeZ},
+					"topic/c": {nodeX},
+				}
+				// Only nodeX should be dialed (satisfies all 3 topics)
+				return crawlerPeers, []*enode.Node{nodeX}
+			},
+		},
+		{
+			name:           "cross-topic decrement works correctly",
+			connectedPeers: map[string]int{},
+			topicsProvider: func() map[string]int {
+				return map[string]int{
+					"topic/a": 2, // Need 2 peers
+					"topic/b": 1, // Need 1 peer
+				}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				// Peer X serves both topics
+				nodeX := newTestNode(t, "127.0.0.1", 30411)
+				// Peer Y serves only topic/a
+				nodeY := newTestNode(t, "127.0.0.1", 30412)
+
+				crawlerPeers := map[string][]*enode.Node{
+					"topic/a": {nodeX, nodeY},
+					"topic/b": {nodeX},
+				}
+				// nodeX covers topic/b fully, and 1 of 2 for topic/a
+				// nodeY covers remaining 1 for topic/a
+				return crawlerPeers, []*enode.Node{nodeX, nodeY}
+			},
+		},
+		{
+			name:           "no redundant dials when one peer satisfies all",
+			connectedPeers: map[string]int{},
+			topicsProvider: func() map[string]int {
+				return map[string]int{
+					"topic/a": 1,
+					"topic/b": 1,
+					"topic/c": 1,
+				}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				nodeX := newTestNode(t, "127.0.0.1", 30421)
+				crawlerPeers := map[string][]*enode.Node{
+					"topic/a": {nodeX},
+					"topic/b": {nodeX},
+					"topic/c": {nodeX},
+				}
+				// Only 1 dial needed for all 3 topics
+				return crawlerPeers, []*enode.Node{nodeX}
+			},
+		},
+		{
+			name: "skips topics with enough peers already",
+			connectedPeers: map[string]int{
+				"topic/a": 2, // Already has 2
+			},
+			topicsProvider: func() map[string]int {
+				return map[string]int{
+					"topic/a": 2, // min 2, already have 2
+					"topic/b": 1, // min 1, have 0
+				}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				nodeX := newTestNode(t, "127.0.0.1", 30431)
+				nodeY := newTestNode(t, "127.0.0.1", 30432)
+				crawlerPeers := map[string][]*enode.Node{
+					"topic/a": {nodeX},
+					"topic/b": {nodeY},
+				}
+				// Only nodeY should be dialed (topic/a already satisfied)
+				return crawlerPeers, []*enode.Node{nodeY}
+			},
+		},
+		{
+			name:           "returns nil when all topics satisfied",
+			connectedPeers: map[string]int{"topic/a": 2, "topic/b": 1},
+			topicsProvider: func() map[string]int {
+				return map[string]int{
+					"topic/a": 2,
+					"topic/b": 1,
+				}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				nodeX := newTestNode(t, "127.0.0.1", 30441)
+				crawlerPeers := map[string][]*enode.Node{
+					"topic/a": {nodeX},
+					"topic/b": {nodeX},
+				}
+				// No dials needed
+				return crawlerPeers, nil
+			},
+		},
+		{
+			name:           "handles empty crawler response",
+			connectedPeers: map[string]int{},
+			topicsProvider: func() map[string]int {
+				return map[string]int{"topic/a": 1}
+			},
+			buildPeers: func(t *testing.T) (map[string][]*enode.Node, []*enode.Node) {
+				return map[string][]*enode.Node{}, nil
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			listPeers := func(topic string) []peer.ID {
+				count := tt.connectedPeers[topic]
+				peers := make([]peer.ID, count)
+				for i := range count {
+					peers[i] = peer.ID(topic + string(rune(i)))
+				}
+				return peers
+			}
+
+			crawlerPeers, expected := tt.buildPeers(t)
+			crawler := &mockCrawler{
+				peers:   crawlerPeers,
+				consume: false,
+			}
+
+			dialer := NewGossipPeerDialer(t.Context(), crawler, listPeers, func(ctx context.Context,
+				maxConcurrentDials int, nodes []*enode.Node) uint {
+				return 0
+			})
+			dialer.topicsProvider = tt.topicsProvider
+
+			got := dialer.selectPeersForTopics()
+
+			if expected == nil {
+				require.Nil(t, got)
+				return
+			}
+
+			require.Equal(t, len(expected), len(got), "expected %d peers, got %d", len(expected), len(got))
+
+			// Verify all expected nodes are present (order may vary for equal topic counts)
+			expectedIDs := make(map[enode.ID]struct{})
+			for _, n := range expected {
+				expectedIDs[n.ID()] = struct{}{}
+			}
+			for _, n := range got {
+				_, ok := expectedIDs[n.ID()]
+				require.True(t, ok, "unexpected peer %s in result", n.ID())
+			}
+		})
+	}
+}
+
+func TestGossipPeerDialer_ProtectedPeers(t *testing.T) {
+	peerA := peer.ID("peerA")
+	peerB := peer.ID("peerB")
+	peerC := peer.ID("peerC")
+
+	tests := []struct {
+		name           string
+		topicsProvider func() map[string]int
+		connectedPeers map[string][]peer.ID // topic -> connected peers
+		expected       []peer.ID
+	}{
+		{
+			name:           "nil topics provider",
+			topicsProvider: nil,
+			connectedPeers: map[string][]peer.ID{},
+			expected:       nil,
+		},
+		{
+			name:           "no topics",
+			topicsProvider: func() map[string]int { return map[string]int{} },
+			connectedPeers: map[string][]peer.ID{},
+			expected:       []peer.ID{},
+		},
+		{
+			name:           "no peers for any topic",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 1, "topic/b": 1} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {}, "topic/b": {}},
+			expected:       []peer.ID{},
+		},
+		{
+			name:           "multiple peers for all topics protects first peer from each",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 2, "topic/b": 2} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {peerA, peerB}, "topic/b": {peerB, peerC}},
+			expected:       []peer.ID{peerA, peerB},
+		},
+		{
+			name:           "single peer for one topic",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 1} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {peerA}},
+			expected:       []peer.ID{peerA},
+		},
+		{
+			name:           "same peer is first for multiple topics",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 1, "topic/b": 1} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {peerA}, "topic/b": {peerA}},
+			expected:       []peer.ID{peerA},
+		},
+		{
+			name:           "different first peers for different topics",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 1, "topic/b": 1} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {peerA}, "topic/b": {peerB}},
+			expected:       []peer.ID{peerA, peerB},
+		},
+		{
+			name:           "protects first peer from each topic",
+			topicsProvider: func() map[string]int { return map[string]int{"topic/a": 1, "topic/b": 2, "topic/c": 1} },
+			connectedPeers: map[string][]peer.ID{"topic/a": {peerA}, "topic/b": {peerB, peerC}, "topic/c": {peerC}},
+			expected:       []peer.ID{peerA, peerB, peerC},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			listPeers := func(topic string) []peer.ID {
+				return tt.connectedPeers[topic]
+			}
+
+			dialer := &GossipPeerDialer{
+				topicsProvider: tt.topicsProvider,
+				listPeers:      listPeers,
+			}
+
+			got := dialer.ProtectedPeers()
+
+			if tt.expected == nil {
+				require.Nil(t, got)
+				return
+			}
+
+			require.NotNil(t, got)
+			require.Equal(t, len(tt.expected), len(got), "expected %d peers, got %d", len(tt.expected), len(got))
+
+			if len(tt.expected) == 0 {
+				return
+			}
+
+			// Check all expected peers are present (order may vary due to map iteration)
+			expectedSet := make(map[peer.ID]struct{})
+			for _, p := range tt.expected {
+				expectedSet[p] = struct{}{}
+			}
+			for _, p := range got {
+				_, ok := expectedSet[p]
+				require.True(t, ok, "unexpected peer %s in result", p)
+			}
+		})
+	}
+}
+
+func TestGossipPeerDialer_topicsChanged(t *testing.T) {
+	tests := []struct {
+		name         string
+		cachedTopics map[string]int
+		newTopics    map[string]int
+		expected     bool
+	}{
+		{
+			name:         "both empty",
+			cachedTopics: map[string]int{},
+			newTopics:    map[string]int{},
+			expected:     false,
+		},
+		{
+			name:         "same topics",
+			cachedTopics: map[string]int{"topic/a": 1, "topic/b": 2},
+			newTopics:    map[string]int{"topic/a": 1, "topic/b": 2},
+			expected:     false,
+		},
+		{
+			name:         "same topics different min peer counts",
+			cachedTopics: map[string]int{"topic/a": 1, "topic/b": 2},
+			newTopics:    map[string]int{"topic/a": 5, "topic/b": 10},
+			expected:     false,
+		},
+		{
+			name:         "new topic added",
+			cachedTopics: map[string]int{"topic/a": 1},
+			newTopics:    map[string]int{"topic/a": 1, "topic/b": 2},
+			expected:     true,
+		},
+		{
+			name:         "topic removed",
+			cachedTopics: map[string]int{"topic/a": 1, "topic/b": 2},
+			newTopics:    map[string]int{"topic/a": 1},
+			expected:     true,
+		},
+		{
+			name:         "same length different topics",
+			cachedTopics: map[string]int{"topic/a": 1, "topic/b": 2},
+			newTopics:    map[string]int{"topic/a": 1, "topic/c": 2},
+			expected:     true,
+		},
+		{
+			name:         "from empty to non-empty",
+			cachedTopics: map[string]int{},
+			newTopics:    map[string]int{"topic/a": 1},
+			expected:     true,
+		},
+		{
+			name:         "from non-empty to empty",
+			cachedTopics: map[string]int{"topic/a": 1},
+			newTopics:    map[string]int{},
+			expected:     true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			dialer := &GossipPeerDialer{
+				cachedTopics: tt.cachedTopics,
+			}
+			got := dialer.topicsChanged(tt.newTopics)
+			require.Equal(t, tt.expected, got)
+		})
+	}
+}
+
+type mockCrawler struct {
+	mu      sync.Mutex
+	peers   map[string][]*enode.Node
+	consume bool
+}
+
+func (m *mockCrawler) Start(gossipcrawler.TopicExtractor) error {
+	return nil
+}
+
+func (m *mockCrawler) Stop()                      {}
+func (m *mockCrawler) RemovePeerByPeerId(peer.ID) {}
+func (m *mockCrawler) RemoveTopic(string)         {}
+func (m *mockCrawler) TriggerCrawl()              {}
+func (m *mockCrawler) PeersForTopic(topic string) []*enode.Node {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	nodes := m.peers[topic]
+	if len(nodes) == 0 {
+		return nil
+	}
+
+	copied := slices.Clone(nodes)
+	if m.consume {
+		m.peers[topic] = nil
+	}
+	return copied
+}
+
+type mockDialer struct {
+	mu    sync.Mutex
+	dials []*enode.Node
+}
+
+func (m *mockDialer) DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	m.dials = append(m.dials, nodes...)
+	return uint(len(nodes))
+}
+
+func (m *mockDialer) dialCount() int {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	return len(m.dials)
+}
+
+func (m *mockDialer) dialedNodes() []*enode.Node {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+	return slices.Clone(m.dials)
+}
+
+func newTestNode(t *testing.T, ip string, tcpPort uint16) *enode.Node {
+	priv, _, err := crypto.GenerateSecp256k1Key(rand.Reader)
+	require.NoError(t, err)
+
+	return newTestNodeWithPriv(t, priv, ip, tcpPort)
+}
+
+func newTestNodeWithPriv(t *testing.T, priv crypto.PrivKey, ip string, tcpPort uint16) *enode.Node {
+	t.Helper()
+
+	db, err := enode.OpenDB("")
+	require.NoError(t, err)
+	t.Cleanup(func() {
+		db.Close()
+	})
+
+	convertedKey, err := ecdsa.ConvertFromInterfacePrivKey(priv)
+	require.NoError(t, err)
+
+	localNode := enode.NewLocalNode(db, convertedKey)
+	localNode.SetStaticIP(net.ParseIP(ip))
+	localNode.Set(enr.TCP(tcpPort))
+	localNode.Set(enr.UDP(tcpPort))
+
+	return localNode.Node()
+}

beacon-chain/p2p/gossip_peer_crawler.go

@@ -0,0 +1,606 @@
+package p2p
+
+import (
+	"context"
+	"fmt"
+	"slices"
+	"sync"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
+	"github.com/pkg/errors"
+	"golang.org/x/sync/semaphore"
+
+	"github.com/libp2p/go-libp2p/core/peer"
+
+	"github.com/ethereum/go-ethereum/p2p/enode"
+)
+
+const (
+	semaphoreWeight = int64(1)
+	// pingBufferSizeScaleFactor determines the ping channel buffer size as a multiple
+	// of maxConcurrentPings. The crawl loop blocks when the ping buffer is full, so we
+	// need headroom beyond the number of concurrent pings allowed. Since pings to
+	// unreachable peers may timeout (taking longer to complete), a larger buffer ensures
+	// the crawler can continue discovering peers without stalling while waiting for slow
+	// or failed pings to drain.
+	pingBufferSizeScaleFactor = 4
+)
+
+type peerNode struct {
+	isPinged bool
+	node     *enode.Node
+	peerID   peer.ID
+	topics   map[string]struct{}
+}
+
+type crawledPeers struct {
+	mu              sync.RWMutex
+	peerNodeByEnode map[enode.ID]*peerNode
+	peerNodeByPid   map[peer.ID]*peerNode
+	peersByTopic    map[string]map[*peerNode]struct{}
+}
+
+func (cp *crawledPeers) updateStatusToPinged(enodeID enode.ID) {
+	cp.mu.Lock()
+	defer cp.mu.Unlock()
+
+	existingPNode, ok := cp.peerNodeByEnode[enodeID]
+	if !ok {
+		return
+	}
+
+	// we only want to ping a node with a given NodeId once -> not on every sequence number change
+	// as ping is simply a test of a node being reachable and not fake
+	existingPNode.isPinged = true
+}
+
+func (cp *crawledPeers) updatePeer(node *enode.Node, topics []string) (bool, error) {
+	if node == nil {
+		return false, errors.New("node is nil")
+	}
+
+	cp.mu.Lock()
+	defer cp.mu.Unlock()
+
+	enodeID := node.ID()
+	existingPNode, ok := cp.peerNodeByEnode[enodeID]
+
+	if ok && existingPNode.node == nil {
+		return false, errors.New("enode is nil for enodeId")
+	}
+
+	// we don't want to update enodes with a lower sequence number as they're stale records
+	if ok && existingPNode.node.Seq() >= node.Seq() {
+		return false, nil
+	}
+
+	if !ok {
+		// this is a new peer
+		peerID, err := enodeToPeerID(node)
+		if err != nil {
+			return false, fmt.Errorf("converting enode to peer ID: %w", err)
+		}
+		existingPNode = &peerNode{
+			node:   node,
+			peerID: peerID,
+			topics: make(map[string]struct{}),
+		}
+		cp.peerNodeByEnode[enodeID] = existingPNode
+		cp.peerNodeByPid[peerID] = existingPNode
+	} else {
+		existingPNode.node = node
+	}
+
+	cp.updateTopicsUnlocked(existingPNode, topics)
+	cp.recordMetricsUnlocked()
+
+	if existingPNode.isPinged || len(topics) == 0 {
+		return false, nil
+	}
+	return true, nil
+}
+
+func (cp *crawledPeers) removeTopic(topic string) {
+	cp.mu.Lock()
+	defer cp.mu.Unlock()
+
+	// Get all peers subscribed to this topic
+	peers, ok := cp.peersByTopic[topic]
+	if !ok {
+		return // Topic doesn't exist
+	}
+
+	// Remove the topic from each peer's topic list
+	for pnode := range peers {
+		delete(pnode.topics, topic)
+		// remove the peer if it has no more topics left
+		if len(pnode.topics) == 0 {
+			cp.updateTopicsUnlocked(pnode, nil)
+		}
+	}
+
+	// Remove the topic from byTopic map
+	delete(cp.peersByTopic, topic)
+	cp.recordMetricsUnlocked()
+}
+
+func (cp *crawledPeers) removePeerByPeerId(peerID peer.ID) {
+	cp.mu.Lock()
+	defer cp.mu.Unlock()
+
+	pnode, ok := cp.peerNodeByPid[peerID]
+	if !ok {
+		return
+	}
+
+	// Use updateTopicsUnlocked with empty topics to remove the peer
+	cp.updateTopicsUnlocked(pnode, nil)
+	cp.recordMetricsUnlocked()
+}
+
+func (cp *crawledPeers) removePeerByNodeId(enodeID enode.ID) {
+	cp.mu.Lock()
+	defer cp.mu.Unlock()
+	pnode, ok := cp.peerNodeByEnode[enodeID]
+	if !ok {
+		return
+	}
+	cp.updateTopicsUnlocked(pnode, nil)
+	cp.recordMetricsUnlocked()
+}
+
+func (cp *crawledPeers) recordMetricsUnlocked() {
+	gossipCrawlerPeersByEnodeCount.Set(float64(len(cp.peerNodeByEnode)))
+	gossipCrawlerPeersByPidCount.Set(float64(len(cp.peerNodeByPid)))
+	gossipCrawlerTopicsCount.Set(float64(len(cp.peersByTopic)))
+}
+
+func (cp *crawledPeers) logPeerCounts() {
+	cp.mu.RLock()
+	defer cp.mu.RUnlock()
+
+	for topic, peers := range cp.peersByTopic {
+		// Count only pinged peers (verified reachable)
+		pingedCount := 0
+		for pnode := range peers {
+			if pnode.isPinged {
+				pingedCount++
+			}
+		}
+		log.WithField("topic", topic).
+			WithField("totalPeers", len(peers)).
+			WithField("pingedPeers", pingedCount).
+			Debug("Crawler indexed peers for topic")
+	}
+}
+
+func (cp *crawledPeers) cleanupPeer(pnode *peerNode) {
+	delete(cp.peerNodeByPid, pnode.peerID)
+	delete(cp.peerNodeByEnode, pnode.node.ID())
+	for t := range pnode.topics {
+		if peers, ok := cp.peersByTopic[t]; ok {
+			delete(peers, pnode)
+			if len(peers) == 0 {
+				delete(cp.peersByTopic, t)
+			}
+		}
+	}
+	pnode.topics = nil // Clear topics to indicate removal.
+}
+
+func (cp *crawledPeers) removeOldTopicsFromPeer(pnode *peerNode, newTopics map[string]struct{}) {
+	for oldTopic := range pnode.topics {
+		if _, ok := newTopics[oldTopic]; !ok {
+			if peers, ok := cp.peersByTopic[oldTopic]; ok {
+				delete(peers, pnode)
+				if len(peers) == 0 {
+					delete(cp.peersByTopic, oldTopic)
+				}
+			}
+		}
+	}
+}
+
+func (cp *crawledPeers) addNewTopicsToPeer(pnode *peerNode, newTopics map[string]struct{}) {
+	for newTopic := range newTopics {
+		if _, ok := pnode.topics[newTopic]; !ok {
+			if _, ok := cp.peersByTopic[newTopic]; !ok {
+				cp.peersByTopic[newTopic] = make(map[*peerNode]struct{})
+			}
+			cp.peersByTopic[newTopic][pnode] = struct{}{}
+		}
+	}
+}
+
+// updateTopicsUnlocked updates the topics associated with a peer node.
+// If the topics slice is empty, the peer is completely removed from the crawled peers.
+// Otherwise, it updates the peer's topics by removing old topics that are no longer
+// present and adding new topics. This method assumes the caller holds the lock on cp.mu.
+// If a topic has no peers after this update, it is removed from the list of topics we track peers for.
+func (cp *crawledPeers) updateTopicsUnlocked(pnode *peerNode, topics []string) {
+	// If topics is empty, remove the peer completely.
+	if len(topics) == 0 {
+		cp.cleanupPeer(pnode)
+		return
+	}
+
+	newTopics := make(map[string]struct{})
+	for _, t := range topics {
+		newTopics[t] = struct{}{}
+	}
+
+	// Remove old topics that are no longer present.
+	cp.removeOldTopicsFromPeer(pnode, newTopics)
+
+	// Add new topics.
+	cp.addNewTopicsToPeer(pnode, newTopics)
+
+	pnode.topics = newTopics
+}
+
+func (cp *crawledPeers) peersForTopic(topic string, filter gossipcrawler.PeerFilterFunc) []peerNode {
+	cp.mu.RLock()
+	defer cp.mu.RUnlock()
+
+	peers, ok := cp.peersByTopic[topic]
+	if !ok {
+		return nil
+	}
+
+	var peerNodes []peerNode
+	for pnode := range peers {
+		if pnode.node == nil {
+			continue
+		}
+		if pnode.isPinged && filter(pnode.node) {
+			peerNodes = append(peerNodes, *pnode)
+		}
+	}
+	return peerNodes
+}
+
+// GossipPeerCrawler discovers and maintains a registry of peers subscribed to gossipsub topics.
+// It uses discv5 to find peers, extracts their topic subscriptions from ENR records, and verifies
+// their reachability via ping. Only peers that have been successfully pinged are returned when
+// querying for peers on a given topic. The crawler runs three background loops: one for discovery,
+// one for ping verification, and one for periodic cleanup of stale or filtered-out peers.
+type GossipPeerCrawler struct {
+	ctx context.Context
+
+	crawlInterval, crawlTimeout time.Duration
+
+	crawledPeers *crawledPeers
+
+	// Discovery interface for finding peers
+	dv5 ListenerRebooter
+
+	p2pSvc *Service
+
+	topicExtractor gossipcrawler.TopicExtractor
+
+	peerFilter gossipcrawler.PeerFilterFunc
+	scorer     PeerScoreFunc
+
+	pingCh        chan enode.Node
+	pingSemaphore *semaphore.Weighted
+
+	triggerCrawlCh chan struct{}
+
+	once sync.Once
+}
+
+// cleanupInterval controls how frequently we sweep crawled peers and prune
+// those that are no longer useful.
+const cleanupInterval = 5 * time.Minute
+
+// crawlerLogInterval controls how frequently we log peer counts per topic.
+const crawlerLogInterval = 10 * time.Minute
+
+// PeerScoreFunc calculates a reputation score for a given peer ID.
+// Higher scores indicate more desirable peers. This function is used by PeersForTopic
+// to sort returned peers in descending order of quality, allowing callers to prioritize
+// connections to the most reliable peers.
+type PeerScoreFunc func(peer.ID) float64
+
+// NewGossipPeerCrawler creates a new crawler for discovering gossipsub peers.
+// The crawler uses the provided discv5 listener to discover peers and tracks their
+// topic subscriptions. Parameters:
+//   - p2pSvc: The P2P service for network operations
+//   - dv5: The discv5 listener used for peer discovery and ping verification
+//   - crawlTimeout: Maximum duration for each crawl iteration
+//   - crawlInterval: The duration between each crawl iteration
+//   - maxConcurrentPings: Limits parallel ping operations to avoid overwhelming the network
+//   - peerFilter: Determines which discovered peers should be tracked
+//   - scorer: Calculates peer quality scores for sorting results
+//
+// Returns an error if any required parameter is nil or invalid.
+func NewGossipPeerCrawler(
+	ctx context.Context,
+	p2pSvc *Service,
+	dv5 ListenerRebooter,
+	crawlTimeout time.Duration,
+	crawlInterval time.Duration,
+	maxConcurrentPings int64,
+	peerFilter gossipcrawler.PeerFilterFunc,
+	scorer PeerScoreFunc,
+) (*GossipPeerCrawler, error) {
+	if p2pSvc == nil {
+		return nil, errors.New("p2pSvc is nil")
+	}
+	if dv5 == nil {
+		return nil, errors.New("dv5 is nil")
+	}
+	if crawlTimeout <= 0 {
+		return nil, errors.New("crawl timeout must be greater than 0")
+	}
+	if crawlInterval <= 0 {
+		return nil, errors.New("crawl interval must be greater than 0")
+	}
+	if maxConcurrentPings <= 0 {
+		return nil, errors.New("max concurrent pings must be greater than 0")
+	}
+	if peerFilter == nil {
+		return nil, errors.New("peer filter is nil")
+	}
+	if scorer == nil {
+		return nil, errors.New("peer scorer is nil")
+	}
+
+	g := &GossipPeerCrawler{
+		ctx:           ctx,
+		crawlInterval: crawlInterval,
+		crawlTimeout:  crawlTimeout,
+		p2pSvc:        p2pSvc,
+		dv5:           dv5,
+		peerFilter:    peerFilter,
+		scorer:        scorer,
+	}
+	g.pingCh = make(chan enode.Node, pingBufferSizeScaleFactor*maxConcurrentPings)
+	g.pingSemaphore = semaphore.NewWeighted(maxConcurrentPings)
+	g.triggerCrawlCh = make(chan struct{}, 1)
+	g.crawledPeers = &crawledPeers{
+		peerNodeByEnode: make(map[enode.ID]*peerNode),
+		peerNodeByPid:   make(map[peer.ID]*peerNode),
+		peersByTopic:    make(map[string]map[*peerNode]struct{}),
+	}
+	return g, nil
+}
+
+// PeersForTopic returns a list of enode records for peers subscribed to the given topic.
+// Only peers that have been successfully pinged (verified as reachable) and pass the
+// configured peer filter are included. Results are sorted in descending order by peer
+// score, so higher-quality peers appear first. Returns nil if no peers are found for
+// the topic. The returned slice should not be modified as it contains pointers to
+// internal enode records.
+func (g *GossipPeerCrawler) PeersForTopic(topic string) []*enode.Node {
+	peerNodes := g.crawledPeers.peersForTopic(topic, g.peerFilter)
+
+	slices.SortFunc(peerNodes, func(a, b peerNode) int {
+		scoreA := g.scorer(a.peerID)
+		scoreB := g.scorer(b.peerID)
+		if scoreA > scoreB {
+			return -1
+		}
+		if scoreA < scoreB {
+			return 1
+		}
+		return 0
+	})
+
+	nodes := make([]*enode.Node, 0, len(peerNodes))
+	for _, pn := range peerNodes {
+		nodes = append(nodes, pn.node)
+	}
+
+	return nodes
+}
+
+// RemovePeerByPeerId removes a peer from the crawler's registry by their libp2p peer ID.
+// This also removes the peer from all topic subscriptions they were associated with.
+// If the peer is not found, this operation is a no-op.
+func (g *GossipPeerCrawler) RemovePeerByPeerId(peerID peer.ID) {
+	g.crawledPeers.removePeerByPeerId(peerID)
+}
+
+// RemoveTopic removes a topic and all its peer associations from the crawler.
+// Peers that were only subscribed to this topic are completely removed from the registry.
+// Peers subscribed to other topics remain tracked for those topics.
+// If the topic does not exist, this operation is a no-op.
+func (g *GossipPeerCrawler) RemoveTopic(topic string) {
+	g.crawledPeers.removeTopic(topic)
+}
+
+// Start begins the crawler's background operations. It launches three goroutines:
+// a crawl loop that periodically discovers new peers via discv5, a ping loop that
+// verifies peer reachability, and a cleanup loop that removes stale or filtered peers.
+// The provided TopicExtractor is used to determine which gossipsub topics each
+// discovered peer subscribes to. Start is idempotent; subsequent calls after the
+// first are no-ops. Returns an error if the topic extractor is nil.
+func (g *GossipPeerCrawler) Start(te gossipcrawler.TopicExtractor) error {
+	if te == nil {
+		return errors.New("topic extractor is nil")
+	}
+	g.once.Do(func() {
+		g.topicExtractor = te
+		go g.crawlLoop()
+		go g.pingLoop()
+		go g.cleanupLoop()
+		go g.logPeerCountsLoop()
+	})
+
+	return nil
+}
+
+func (g *GossipPeerCrawler) pingLoop() {
+	for {
+		select {
+		case node := <-g.pingCh:
+			if err := g.pingSemaphore.Acquire(g.ctx, semaphoreWeight); err != nil {
+				return
+			}
+			go func(node *enode.Node) {
+				defer g.pingSemaphore.Release(semaphoreWeight)
+
+				if err := g.dv5.Ping(node); err != nil {
+					log.WithError(err).WithField("node", node.ID()).Debug("Failed to ping node")
+					g.crawledPeers.removePeerByNodeId(node.ID())
+					return
+				}
+
+				g.crawledPeers.updateStatusToPinged(node.ID())
+			}(&node)
+
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+func (g *GossipPeerCrawler) crawlLoop() {
+
+	for {
+		g.crawl()
+		select {
+		case <-time.After(g.crawlInterval):
+		case <-g.triggerCrawlCh:
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+func (g *GossipPeerCrawler) crawl() {
+	ctx, cancel := context.WithTimeout(g.ctx, g.crawlTimeout)
+	defer cancel()
+
+	iterator := g.dv5.RandomNodes()
+
+	// Ensure iterator unblocks on context cancellation or timeout
+	go func() {
+		<-ctx.Done()
+		iterator.Close()
+	}()
+
+	for iterator.Next() {
+		if ctx.Err() != nil {
+			return
+		}
+
+		node := iterator.Node()
+		if node == nil {
+			continue
+		}
+
+		if !g.peerFilter(node) {
+			g.crawledPeers.removePeerByNodeId(node.ID())
+			continue
+		}
+
+		topics, err := g.topicExtractor(ctx, node)
+		if err != nil {
+			log.WithError(err).WithField("node", node.ID()).Debug("Failed to extract topics, skipping")
+			continue
+		}
+
+		shouldPing, err := g.crawledPeers.updatePeer(node, topics)
+		if err != nil {
+			log.WithError(err).WithField("node", node.ID()).Error("Failed to update crawled peers")
+		}
+		if !shouldPing {
+			continue
+		}
+		select {
+		case g.pingCh <- *node:
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+// cleanupLoop periodically removes peers that the filter rejects or that
+// have no topics of interest. It uses the same context lifecycle as other
+// background loops.
+func (g *GossipPeerCrawler) cleanupLoop() {
+	ticker := time.NewTicker(cleanupInterval)
+	defer ticker.Stop()
+
+	// Initial cleanup to catch any leftovers from startup state
+	g.cleanup()
+
+	for {
+		select {
+		case <-ticker.C:
+			g.cleanup()
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+// cleanup scans the crawled peer set and removes entries that either fail
+// the current peer filter or have no topics of interest remaining.
+func (g *GossipPeerCrawler) cleanup() {
+	cp := g.crawledPeers
+
+	// Snapshot current peers to evaluate without holding the lock during
+	// filter and topic extraction.
+	cp.mu.RLock()
+	peers := make([]*peerNode, 0, len(cp.peerNodeByPid))
+	for _, p := range cp.peerNodeByPid {
+		peers = append(peers, p)
+	}
+	cp.mu.RUnlock()
+
+	for _, p := range peers {
+		// Remove peers that no longer pass the filter
+		if !g.peerFilter(p.node) {
+			cp.removePeerByNodeId(p.node.ID())
+			continue
+		}
+
+		// Re-extract topics; if the extractor errors or yields none, drop the peer.
+		topics, err := g.topicExtractor(g.ctx, p.node)
+		if err != nil || len(topics) == 0 {
+			cp.removePeerByNodeId(p.node.ID())
+		}
+	}
+}
+
+func (g *GossipPeerCrawler) logPeerCountsLoop() {
+	ticker := time.NewTicker(crawlerLogInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ticker.C:
+			g.crawledPeers.logPeerCounts()
+		case <-g.ctx.Done():
+			return
+		}
+	}
+}
+
+// TriggerCrawl requests an immediate crawl. If a crawl trigger is already
+// pending, this call is ignored (non-blocking). This allows external systems
+// to request a crawl without waiting for the regular interval.
+func (g *GossipPeerCrawler) TriggerCrawl() {
+	select {
+	case g.triggerCrawlCh <- struct{}{}:
+		log.Info("Triggering crawl")
+	default:
+		// Channel full, crawl already triggered
+	}
+}
+
+// enodeToPeerID converts an enode record to a peer ID.
+func enodeToPeerID(n *enode.Node) (peer.ID, error) {
+	info, _, err := convertToAddrInfo(n)
+	if err != nil {
+		return "", fmt.Errorf("converting enode to addr info: %w", err)
+	}
+	if info == nil {
+		return "", errors.New("peer info is nil")
+	}
+	return info.ID, nil
+}

beacon-chain/p2p/gossip_peer_crawler_test.go

@@ -0,0 +1,787 @@
+package p2p
+
+import (
+	"context"
+	"net"
+	"testing"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
+	p2ptest "github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/testing"
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/libp2p/go-libp2p/core/peer"
+	"github.com/prometheus/client_golang/prometheus/testutil"
+	"github.com/stretchr/testify/require"
+	require2 "github.com/stretchr/testify/require"
+)
+
+// Helpers for crawledPeers tests
+func newTestCrawledPeers() *crawledPeers {
+	return &crawledPeers{
+		peerNodeByEnode: make(map[enode.ID]*peerNode),
+		peerNodeByPid:   make(map[peer.ID]*peerNode),
+		peersByTopic:    make(map[string]map[*peerNode]struct{}),
+	}
+}
+
+func addPeerWithTopics(t *testing.T, cp *crawledPeers, node *enode.Node, topics []string, pinged bool) *peerNode {
+	t.Helper()
+	pid, err := enodeToPeerID(node)
+	require.NoError(t, err)
+	p := &peerNode{
+		isPinged: pinged,
+		node:     node,
+		peerID:   pid,
+		topics:   make(map[string]struct{}),
+	}
+	cp.mu.Lock()
+	cp.peerNodeByEnode[p.node.ID()] = p
+	cp.peerNodeByPid[p.peerID] = p
+	cp.updateTopicsUnlocked(p, topics)
+	cp.mu.Unlock()
+	return p
+}
+
+func TestUpdateStatusToPinged(t *testing.T) {
+	localNode := createTestNodeRandom(t)
+	node1 := localNode.Node()
+	localNode2 := createTestNodeRandom(t)
+	node2 := localNode2.Node()
+
+	cases := []struct {
+		name         string
+		prep         func(*crawledPeers)
+		target       *enode.Node
+		expectPinged map[enode.ID]bool
+	}{
+		{
+			name: "sets pinged for existing peer",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"a"}, false)
+			},
+			target: node1,
+			expectPinged: map[enode.ID]bool{
+				node1.ID(): true,
+			},
+		},
+		{
+			name: "idempotent when already pinged",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"a"}, true)
+			},
+			target: node1,
+			expectPinged: map[enode.ID]bool{
+				node1.ID(): true,
+			},
+		},
+		{
+			name: "no change when peer missing",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"a"}, false)
+			},
+			target: node2,
+			expectPinged: map[enode.ID]bool{
+				node1.ID(): false,
+			},
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			cp := newTestCrawledPeers()
+			tc.prep(cp)
+			cp.updateStatusToPinged(tc.target.ID())
+			cp.mu.RLock()
+			defer cp.mu.RUnlock()
+			for id, exp := range tc.expectPinged {
+				if p := cp.peerNodeByEnode[id]; p != nil {
+					require.Equal(t, exp, p.isPinged)
+				}
+			}
+		})
+	}
+}
+
+func TestRemoveTopic(t *testing.T) {
+	localNode := createTestNodeRandom(t)
+	node1 := localNode.Node()
+	localNode2 := createTestNodeRandom(t)
+	node2 := localNode2.Node()
+
+	topic1 := "t1"
+	topic2 := "t2"
+
+	cases := []struct {
+		name  string
+		prep  func(*crawledPeers)
+		topic string
+		check func(*testing.T, *crawledPeers)
+	}{
+		{
+			name: "removes topic from all peers and index",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1", "t2"}, true)
+				addPeerWithTopics(t, cp, node2, []string{"t1"}, true)
+			},
+			topic: topic1,
+			check: func(t *testing.T, cp *crawledPeers) {
+				_, ok := cp.peersByTopic[topic1]
+				require.False(t, ok)
+				for _, p := range cp.peerNodeByPid {
+					_, has := p.topics[topic1]
+					require.False(t, has)
+				}
+				// Ensure other topics remain
+				_, ok = cp.peersByTopic[topic2]
+				require.True(t, ok)
+			},
+		},
+		{
+			name: "no-op when topic missing",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t2"}, true)
+			},
+			topic: topic1,
+			check: func(t *testing.T, cp *crawledPeers) {
+				_, ok := cp.peersByTopic[topic2]
+				require.True(t, ok)
+			},
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			cp := newTestCrawledPeers()
+			tc.prep(cp)
+			cp.removeTopic(tc.topic)
+			tc.check(t, cp)
+		})
+	}
+}
+
+func TestRemovePeer(t *testing.T) {
+	localNode := createTestNodeRandom(t)
+	node1 := localNode.Node()
+	localNode2 := createTestNodeRandom(t)
+	node2 := localNode2.Node()
+
+	cases := []struct {
+		name       string
+		prep       func(*crawledPeers)
+		target     enode.ID
+		wantTopics int
+	}{
+		{
+			name: "removes existing peer and prunes empty topic",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+			},
+			target:     node1.ID(),
+			wantTopics: 0,
+		},
+		{
+			name: "removes only targeted peer; keeps topic for other",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+				addPeerWithTopics(t, cp, node2, []string{"t1"}, true)
+			},
+			target:     node1.ID(),
+			wantTopics: 1, // byTopic should still have t1 with one peer
+		},
+		{
+			name: "no-op when peer missing",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+			},
+			target:     node2.ID(),
+			wantTopics: 1,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			cp := newTestCrawledPeers()
+			tc.prep(cp)
+			cp.removePeerByNodeId(tc.target)
+			cp.mu.RLock()
+			defer cp.mu.RUnlock()
+			require.Len(t, cp.peersByTopic, tc.wantTopics)
+		})
+	}
+}
+
+func TestRemovePeerId(t *testing.T) {
+	localNode := createTestNodeRandom(t)
+	node1 := localNode.Node()
+	localNode2 := createTestNodeRandom(t)
+	node2 := localNode2.Node()
+
+	pid1, err := enodeToPeerID(node1)
+	require.NoError(t, err)
+	pid2, err := enodeToPeerID(node2)
+	require.NoError(t, err)
+
+	cases := []struct {
+		name       string
+		prep       func(*crawledPeers)
+		target     peer.ID
+		wantTopics int
+		wantPeers  int
+	}{
+		{
+			name: "removes existing peer by id and prunes topic",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+			},
+			target:     pid1,
+			wantTopics: 0,
+			wantPeers:  0,
+		},
+		{
+			name: "removes only targeted peer id; keeps topic for other",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+				addPeerWithTopics(t, cp, node2, []string{"t1"}, true)
+			},
+			target:     pid1,
+			wantTopics: 1,
+			wantPeers:  1,
+		},
+		{
+			name: "no-op when peer id missing",
+			prep: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, node1, []string{"t1"}, true)
+			},
+			target:     pid2,
+			wantTopics: 1,
+			wantPeers:  1,
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			cp := newTestCrawledPeers()
+			tc.prep(cp)
+			cp.removePeerByPeerId(tc.target)
+			cp.mu.RLock()
+			defer cp.mu.RUnlock()
+			require.Len(t, cp.peersByTopic, tc.wantTopics)
+			require.Len(t, cp.peerNodeByPid, tc.wantPeers)
+		})
+	}
+}
+
+func TestUpdateCrawledIfNewer(t *testing.T) {
+	newCrawler := func() (*crawledPeers, *GossipPeerCrawler, func()) {
+		ctx, cancel := context.WithCancel(context.Background())
+		g := &GossipPeerCrawler{
+			ctx:    ctx,
+			pingCh: make(chan enode.Node, 8),
+		}
+		cp := newTestCrawledPeers()
+		return cp, g, cancel
+	}
+
+	// Helper: local node that will cause enodeToPeerID to fail (no TCP/UDP multiaddrs)
+	newNodeNoPorts := func(t *testing.T) *enode.Node {
+		_, privKey := createAddrAndPrivKey(t)
+		db, err := enode.OpenDB("")
+		require.NoError(t, err)
+		t.Cleanup(func() { db.Close() })
+		ln := enode.NewLocalNode(db, privKey)
+		// Do not set TCP/UDP; keep only IP
+		ln.SetStaticIP(net.ParseIP("127.0.0.1"))
+		return ln.Node()
+	}
+
+	// Ensure both A nodes have the same enode.ID but differing seq
+	ln := createTestNodeRandom(t)
+	nodeA1 := ln.Node()
+	setNodeSeq(ln, nodeA1.Seq()+1)
+	nodeA2 := ln.Node()
+
+	tests := []struct {
+		name               string
+		arrange            func(*crawledPeers)
+		invokeNode         *enode.Node
+		invokeTopics       []string
+		expectedShouldPing bool
+		expectErr          bool
+		assert             func(*testing.T, *crawledPeers, <-chan enode.Node)
+	}{
+		{
+			name:               "new peer with topics adds peer and pings",
+			arrange:            func(cp *crawledPeers) {},
+			invokeNode:         nodeA1,
+			invokeTopics:       []string{"a"},
+			expectedShouldPing: true,
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Len(t, cp.peerNodeByEnode, 1)
+				require.Len(t, cp.peerNodeByPid, 1)
+				require.Contains(t, cp.peersByTopic, "a")
+				cp.mu.RUnlock()
+
+			},
+		},
+		{
+			name:         "new peer with empty topics is removed",
+			arrange:      func(cp *crawledPeers) {},
+			invokeNode:   nodeA1,
+			invokeTopics: nil,
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Empty(t, cp.peerNodeByEnode)
+				require.Empty(t, cp.peerNodeByPid)
+				require.Empty(t, cp.peersByTopic)
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name: "existing peer lower seq is ignored",
+			arrange: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, nodeA2, []string{"x"}, false) // higher seq exists
+			},
+			invokeNode:   nodeA1, // lower seq
+			invokeTopics: []string{"a", "b"},
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Contains(t, cp.peersByTopic, "x")
+				require.NotContains(t, cp.peersByTopic, "a")
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name: "existing peer equal seq is ignored",
+			arrange: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, nodeA1, []string{"x"}, false)
+			},
+			invokeNode:   nodeA1,
+			invokeTopics: []string{"a"},
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Contains(t, cp.peersByTopic, "x")
+				require.NotContains(t, cp.peersByTopic, "a")
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name: "existing peer higher seq updates topics and pings",
+			arrange: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, nodeA1, []string{"x"}, false)
+			},
+			invokeNode:         nodeA2,
+			invokeTopics:       []string{"a"},
+			expectedShouldPing: true,
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.NotContains(t, cp.peersByTopic, "x")
+				require.Contains(t, cp.peersByTopic, "a")
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name: "existing peer higher seq but empty topics removes peer",
+			arrange: func(cp *crawledPeers) {
+				addPeerWithTopics(t, cp, nodeA1, []string{"x"}, false)
+			},
+			invokeNode:   nodeA2,
+			invokeTopics: nil,
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Empty(t, cp.peerNodeByEnode)
+				require.Empty(t, cp.peerNodeByPid)
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name: "corrupted existing entry with nil node is ignored",
+			arrange: func(cp *crawledPeers) {
+				pid, _ := enodeToPeerID(nodeA1)
+				cp.mu.Lock()
+				pn := &peerNode{node: nil, peerID: pid, topics: map[string]struct{}{"x": {}}}
+				cp.peerNodeByEnode[nodeA1.ID()] = pn
+				cp.peerNodeByPid[pid] = pn
+				cp.peersByTopic["x"] = map[*peerNode]struct{}{pn: {}}
+				cp.mu.Unlock()
+			},
+			expectErr:    true,
+			invokeNode:   nodeA2,
+			invokeTopics: []string{"a"},
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Contains(t, cp.peersByTopic, "x")
+				cp.mu.RUnlock()
+			},
+		},
+		{
+			name:         "new peer with no ports causes enodeToPeerID error; no add",
+			arrange:      func(cp *crawledPeers) {},
+			invokeNode:   newNodeNoPorts(t),
+			invokeTopics: []string{"a"},
+			expectErr:    true,
+			assert: func(t *testing.T, cp *crawledPeers, ch <-chan enode.Node) {
+				cp.mu.RLock()
+				require.Empty(t, cp.peerNodeByEnode)
+				require.Empty(t, cp.peerNodeByPid)
+				require.Empty(t, cp.peersByTopic)
+				cp.mu.RUnlock()
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			cp, g, cancel := newCrawler()
+			defer cancel()
+			tc.arrange(cp)
+			shouldPing, err := cp.updatePeer(tc.invokeNode, tc.invokeTopics)
+			if tc.expectErr {
+				require.Error(t, err)
+			} else {
+				require.NoError(t, err)
+			}
+			require.Equal(t, shouldPing, tc.expectedShouldPing)
+			tc.assert(t, cp, g.pingCh)
+		})
+	}
+}
+
+func TestPeersForTopic(t *testing.T) {
+	t.Parallel()
+
+	newCrawler := func(filter gossipcrawler.PeerFilterFunc) (*GossipPeerCrawler, *crawledPeers) {
+		g := &GossipPeerCrawler{
+			peerFilter:   filter,
+			scorer:       func(peer.ID) float64 { return 0 },
+			crawledPeers: newTestCrawledPeers(),
+		}
+		return g, g.crawledPeers
+	}
+
+	// Prepare nodes
+	ln1 := createTestNodeRandom(t)
+	ln2 := createTestNodeRandom(t)
+	ln3 := createTestNodeRandom(t)
+	n1, n2, n3 := ln1.Node(), ln2.Node(), ln3.Node()
+	topic := "top"
+
+	cases := []struct {
+		name    string
+		filter  gossipcrawler.PeerFilterFunc
+		setup   func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers)
+		wantIDs []enode.ID
+	}{
+		{
+			name:    "no peers for topic returns empty",
+			filter:  func(*enode.Node) bool { return true },
+			setup:   func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers) {},
+			wantIDs: nil,
+		},
+		{
+			name:   "excludes unpinged peers",
+			filter: func(*enode.Node) bool { return true },
+			setup: func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers) {
+				// Add one pinged and one not pinged on same topic
+				addPeerWithTopics(t, cp, n1, []string{string(topic)}, true)
+				addPeerWithTopics(t, cp, n2, []string{string(topic)}, false)
+			},
+			wantIDs: []enode.ID{n1.ID()},
+		},
+		{
+			name:   "applies peer filter to exclude",
+			filter: func(n *enode.Node) bool { return n.ID() != n2.ID() },
+			setup: func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers) {
+				addPeerWithTopics(t, cp, n1, []string{string(topic)}, true)
+				addPeerWithTopics(t, cp, n2, []string{string(topic)}, true)
+			},
+			wantIDs: []enode.ID{n1.ID()},
+		},
+		{
+			name:   "ignores peerNode with nil node",
+			filter: func(*enode.Node) bool { return true },
+			setup: func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers) {
+				addPeerWithTopics(t, cp, n1, []string{string(topic)}, true)
+				// Add n2 then set its node to nil to simulate corrupted entry
+				p2 := addPeerWithTopics(t, cp, n2, []string{string(topic)}, true)
+				cp.mu.Lock()
+				p2.node = nil
+				cp.mu.Unlock()
+			},
+			wantIDs: []enode.ID{n1.ID()},
+		},
+		{
+			name:   "sorted by score descending",
+			filter: func(*enode.Node) bool { return true },
+			setup: func(t *testing.T, g *GossipPeerCrawler, cp *crawledPeers) {
+				// Add three pinged peers
+				p1 := addPeerWithTopics(t, cp, n1, []string{string(topic)}, true)
+				p2 := addPeerWithTopics(t, cp, n2, []string{string(topic)}, true)
+				p3 := addPeerWithTopics(t, cp, n3, []string{string(topic)}, true)
+				// Provide a deterministic scoring function
+				scores := map[peer.ID]float64{
+					p1.peerID: 3.0,
+					p2.peerID: 2.0,
+					p3.peerID: 1.0,
+				}
+				g.scorer = func(id peer.ID) float64 { return scores[id] }
+			},
+			wantIDs: []enode.ID{n1.ID(), n2.ID(), n3.ID()},
+		},
+	}
+
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			g, cp := newCrawler(tc.filter)
+			tc.setup(t, g, cp)
+			got := g.PeersForTopic(topic)
+			var gotIDs []enode.ID
+			for _, n := range got {
+				gotIDs = append(gotIDs, n.ID())
+			}
+			if tc.wantIDs == nil {
+				require.Empty(t, gotIDs)
+				return
+			}
+			require.Equal(t, tc.wantIDs, gotIDs)
+		})
+	}
+}
+
+func TestCrawler_AddsAndPingsPeer(t *testing.T) {
+	// Create a test node with valid ENR entries (IP/TCP/UDP)
+	localNode := createTestNodeRandom(t)
+	node := localNode.Node()
+
+	// Prepare a mock iterator returning our single node
+	iterator := p2ptest.NewMockIterator([]*enode.Node{node})
+	// Prepare a mock listener with successful Ping
+	mockListener := p2ptest.NewMockListener(localNode, iterator)
+	mockListener.PingFunc = func(*enode.Node) error { return nil }
+
+	// Inject a permissive peer filter
+	filter := gossipcrawler.PeerFilterFunc(func(n *enode.Node) bool { return true })
+
+	// Create crawler with small intervals
+	scorer := func(peer.ID) float64 { return 0 }
+	g, err := NewGossipPeerCrawler(t.Context(), &Service{}, mockListener, 2*time.Second, 10*time.Millisecond, 4, filter, scorer)
+	require.NoError(t, err)
+
+	// Assign a simple topic extractor
+	topic := "test/topic"
+	topicExtractor := func(ctx context.Context, n *enode.Node) ([]string, error) {
+		return []string{topic}, nil
+	}
+
+	// Run ping loop in background and perform a single crawl
+	require.NoError(t, g.Start(topicExtractor))
+
+	// Verify that the peer has been indexed under the topic and marked as pinged
+	require2.Eventually(t, func() bool {
+		g.crawledPeers.mu.RLock()
+		defer g.crawledPeers.mu.RUnlock()
+
+		peers := g.crawledPeers.peersByTopic[topic]
+		if len(peers) == 0 {
+			return false
+		}
+		// Fetch the single peerNode and check status
+		for pn := range peers {
+			if pn == nil {
+				return false
+			}
+			return pn.isPinged
+		}
+		return false
+	}, 2*time.Second, 10*time.Millisecond)
+}
+
+func TestCrawler_SkipsPeer_WhenFilterRejects(t *testing.T) {
+	t.Parallel()
+
+	localNode := createTestNodeRandom(t)
+	node := localNode.Node()
+	iterator := p2ptest.NewMockIterator([]*enode.Node{node})
+	mockListener := p2ptest.NewMockListener(localNode, iterator)
+	mockListener.PingFunc = func(*enode.Node) error { return nil }
+
+	// Reject all peers via injected filter
+	filter := gossipcrawler.PeerFilterFunc(func(n *enode.Node) bool { return false })
+
+	scorer := func(peer.ID) float64 { return 0 }
+	g, err := NewGossipPeerCrawler(t.Context(), &Service{}, mockListener, 2*time.Second, 10*time.Millisecond, 2, filter, scorer)
+	if err != nil {
+		t.Fatalf("NewGossipPeerCrawler error: %v", err)
+	}
+
+	topic := "test/topic"
+	g.topicExtractor = func(ctx context.Context, n *enode.Node) ([]string, error) { return []string{topic}, nil }
+
+	g.crawl()
+
+	// Verify no peers are indexed, because filter rejected the node
+	g.crawledPeers.mu.RLock()
+	defer g.crawledPeers.mu.RUnlock()
+	if len(g.crawledPeers.peerNodeByEnode) != 0 || len(g.crawledPeers.peerNodeByPid) != 0 || len(g.crawledPeers.peersByTopic) != 0 {
+		t.Fatalf("expected no peers indexed, got byEnode=%d byPeerId=%d byTopic=%d",
+			len(g.crawledPeers.peerNodeByEnode), len(g.crawledPeers.peerNodeByPid), len(g.crawledPeers.peersByTopic))
+	}
+}
+
+func TestCrawler_RemoveTopic_RemovesTopicFromIndexes(t *testing.T) {
+	t.Parallel()
+
+	localNode := createTestNodeRandom(t)
+	node := localNode.Node()
+	iterator := p2ptest.NewMockIterator([]*enode.Node{node})
+	mockListener := p2ptest.NewMockListener(localNode, iterator)
+	mockListener.PingFunc = func(*enode.Node) error { return nil }
+
+	filter := gossipcrawler.PeerFilterFunc(func(n *enode.Node) bool { return true })
+
+	scorer := func(peer.ID) float64 { return 0 }
+	g, err := NewGossipPeerCrawler(t.Context(), &Service{}, mockListener, 2*time.Second, 10*time.Millisecond, 2, filter, scorer)
+	if err != nil {
+		t.Fatalf("NewGossipPeerCrawler error: %v", err)
+	}
+
+	topic1 := "test/topic1"
+	topic2 := "test/topic2"
+	g.topicExtractor = func(ctx context.Context, n *enode.Node) ([]string, error) { return []string{topic1, topic2}, nil }
+
+	// Single crawl to index topics
+	g.crawl()
+
+	// Remove one topic and assert it is pruned from all indexes
+	g.RemoveTopic(topic1)
+
+	g.crawledPeers.mu.RLock()
+	defer g.crawledPeers.mu.RUnlock()
+
+	if _, ok := g.crawledPeers.peersByTopic[topic1]; ok {
+		t.Fatalf("expected topic1 to be removed from byTopic")
+	}
+
+	// Ensure peer still exists and retains topic2
+	for _, pn := range g.crawledPeers.peerNodeByEnode {
+		if _, has1 := pn.topics[topic1]; has1 {
+			t.Fatalf("expected topic1 to be removed from peer topics")
+		}
+		if _, has2 := pn.topics[topic2]; !has2 {
+			t.Fatalf("expected topic2 to remain for peer")
+		}
+	}
+}
+
+func TestCrawledPeersMetrics(t *testing.T) {
+	localNode1 := createTestNodeRandom(t)
+	node1 := localNode1.Node()
+	localNode2 := createTestNodeRandom(t)
+	node2 := localNode2.Node()
+
+	pid1, err := enodeToPeerID(node1)
+	require.NoError(t, err)
+
+	t.Run("updatePeer records metrics", func(t *testing.T) {
+		cp := newTestCrawledPeers()
+
+		// Add first peer with two topics
+		_, err := cp.updatePeer(node1, []string{"topic1", "topic2"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerTopicsCount))
+
+		// Add second peer with one overlapping topic
+		_, err = cp.updatePeer(node2, []string{"topic1", "topic3"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(3), testutil.ToFloat64(gossipCrawlerTopicsCount))
+	})
+
+	t.Run("removePeerByPeerId records metrics", func(t *testing.T) {
+		cp := newTestCrawledPeers()
+
+		// Add two peers
+		_, err := cp.updatePeer(node1, []string{"topic1"})
+		require.NoError(t, err)
+		_, err = cp.updatePeer(node2, []string{"topic1", "topic2"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerTopicsCount))
+
+		// Remove first peer by peer ID
+		cp.removePeerByPeerId(pid1)
+
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerTopicsCount))
+	})
+
+	t.Run("removePeerByNodeId records metrics", func(t *testing.T) {
+		cp := newTestCrawledPeers()
+
+		// Add two peers
+		_, err := cp.updatePeer(node1, []string{"topic1"})
+		require.NoError(t, err)
+		_, err = cp.updatePeer(node2, []string{"topic2"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerTopicsCount))
+
+		// Remove first peer by enode ID
+		cp.removePeerByNodeId(node1.ID())
+
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerTopicsCount))
+	})
+
+	t.Run("removeTopic records metrics", func(t *testing.T) {
+		cp := newTestCrawledPeers()
+
+		// Add two peers with overlapping topics
+		_, err := cp.updatePeer(node1, []string{"topic1", "topic2"})
+		require.NoError(t, err)
+		_, err = cp.updatePeer(node2, []string{"topic1"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(2), testutil.ToFloat64(gossipCrawlerTopicsCount))
+
+		// Remove topic1 - this should also remove node2 which only had topic1
+		cp.removeTopic("topic1")
+
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerTopicsCount))
+	})
+
+	t.Run("updatePeer with empty topics removes peer and records metrics", func(t *testing.T) {
+		cp := newTestCrawledPeers()
+
+		// Add peer with topics
+		_, err := cp.updatePeer(node1, []string{"topic1"})
+		require.NoError(t, err)
+
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(1), testutil.ToFloat64(gossipCrawlerTopicsCount))
+
+		// Increment sequence number to ensure update is processed
+		setNodeSeq(localNode1, node1.Seq()+1)
+		node1Updated := localNode1.Node()
+
+		// Update with empty topics - should remove the peer
+		_, err = cp.updatePeer(node1Updated, nil)
+		require.NoError(t, err)
+
+		require.Equal(t, float64(0), testutil.ToFloat64(gossipCrawlerPeersByEnodeCount))
+		require.Equal(t, float64(0), testutil.ToFloat64(gossipCrawlerPeersByPidCount))
+		require.Equal(t, float64(0), testutil.ToFloat64(gossipCrawlerTopicsCount))
+	})
+}

beacon-chain/p2p/gossipcrawler/BUILD.bazel

@@ -0,0 +1,14 @@
+load("@prysm//tools/go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["interface.go"],
+    importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler",
+    visibility = [
+        "//visibility:public",
+    ],
+    deps = [
+        "@com_github_ethereum_go_ethereum//p2p/enode:go_default_library",
+        "@com_github_libp2p_go_libp2p//core/peer:go_default_library",
+    ],
+)

beacon-chain/p2p/gossipcrawler/interface.go

@@ -0,0 +1,37 @@
+package gossipcrawler
+
+import (
+	"context"
+
+	"github.com/ethereum/go-ethereum/p2p/enode"
+	"github.com/libp2p/go-libp2p/core/peer"
+)
+
+// TopicExtractor is a function that can determine the set of topics a current or potential peer
+// is subscribed to based on key/value pairs from the ENR record.
+type TopicExtractor func(ctx context.Context, node *enode.Node) ([]string, error)
+
+// PeerFilterFunc defines the filtering interface used by the crawler to decide if a node
+// is a valid candidate to index in the crawler.
+type PeerFilterFunc func(*enode.Node) bool
+
+type Crawler interface {
+	Start(te TopicExtractor) error
+	RemovePeerByPeerId(peerID peer.ID)
+	RemoveTopic(topic string)
+	PeersForTopic(topic string) []*enode.Node
+	TriggerCrawl()
+}
+
+// SubnetTopicsProvider returns the set of gossipsub topics the node
+// should currently maintain peer connections for along with the minimum number of peers required
+// for each topic.
+type SubnetTopicsProvider func() map[string]int
+
+// GossipDialer controls dialing peers for gossipsub topics based
+// on a provided SubnetTopicsProvider and the p2p crawler.
+type GossipDialer interface {
+	Start(provider SubnetTopicsProvider) error
+	DialPeersForTopicBlocking(ctx context.Context, topic string, nPeers int) error
+	ProtectedPeers() []peer.ID
+}

beacon-chain/p2p/handshake.go

@@ -225,6 +225,10 @@ func (s *Service) AddDisconnectionHandler(handler func(ctx context.Context, id p
 					return
 				}
 
+				if s.crawler != nil {
+					s.crawler.RemovePeerByPeerId(peerID)
+				}
+
 				priorState, err := s.peers.ConnectionState(peerID)
 				if err != nil {
 					// Can happen if the peer has already disconnected, so...

beacon-chain/p2p/interfaces.go

@@ -4,8 +4,8 @@ import (
 	"context"
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/encoder"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -35,6 +35,7 @@ type (
 		PeersProvider
 		MetadataProvider
 		CustodyManager
+		Started() bool
 	}
 
 	// Accessor provides access to the Broadcaster, PeerManager and CustodyManager interfaces.
@@ -98,11 +99,13 @@ type (
 		PeerID() peer.ID
 		Host() host.Host
 		ENR() *enr.Record
+		GossipDialer() gossipcrawler.GossipDialer
 		NodeID() enode.ID
 		DiscoveryAddresses() ([]multiaddr.Multiaddr, error)
 		RefreshPersistentSubnets()
-		FindAndDialPeersWithSubnets(ctx context.Context, topicFormat string, digest [fieldparams.VersionLength]byte, minimumPeersPerSubnet int, subnets map[uint64]bool) error
+		DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint
 		AddPingMethod(reqFunc func(ctx context.Context, id peer.ID) error)
+		Crawler() gossipcrawler.Crawler
 	}
 
 	// Sender abstracts the sending functionality from libp2p.

beacon-chain/p2p/monitoring.go

@@ -97,6 +97,20 @@ var (
 		Help: "The number of data column sidecar message broadcast attempts.",
 	})
 
+	// Gossip Peer Crawler Metrics
+	gossipCrawlerPeersByEnodeCount = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "p2p_gossip_crawler_peers_by_enode_count",
+		Help: "The number of peers tracked by enode ID in the gossip peer crawler.",
+	})
+	gossipCrawlerPeersByPidCount = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "p2p_gossip_crawler_peers_by_pid_count",
+		Help: "The number of peers tracked by peer ID in the gossip peer crawler.",
+	})
+	gossipCrawlerTopicsCount = promauto.NewGauge(prometheus.GaugeOpts{
+		Name: "p2p_gossip_crawler_topics_count",
+		Help: "The number of topics tracked in the gossip peer crawler.",
+	})
+
 	// Gossip Tracer Metrics
 	pubsubTopicsActive = promauto.NewGaugeVec(prometheus.GaugeOpts{
 		Name: "p2p_pubsub_topic_active",

beacon-chain/p2p/service.go

@@ -6,11 +6,13 @@ package p2p
 import (
 	"context"
 	"crypto/ecdsa"
+	"fmt"
 	"sync"
 	"time"
 
 	"github.com/OffchainLabs/prysm/v7/async"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/encoder"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers/scorers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/types"
@@ -61,6 +63,10 @@ var (
 	// for the current peer limit status for the time period
 	// defined below.
 	pollingPeriod = 6 * time.Second
+
+	crawlTimeout       = 12 * time.Second
+	crawlInterval      = 1 * time.Second
+	maxConcurrentDials = int64(256)
 )
 
 // Service for managing peer to peer (p2p) networking.
@@ -95,6 +101,8 @@ type Service struct {
 	custodyInfoLock          sync.RWMutex // Lock access to custodyInfo
 	custodyInfoSet           chan struct{}
 	allForkDigests           map[[4]byte]struct{}
+	crawler                  gossipcrawler.Crawler
+	gossipDialer             gossipcrawler.GossipDialer
 }
 
 type custodyInfo struct {
@@ -163,7 +171,7 @@ func NewService(ctx context.Context, cfg *Config) (*Service, error) {
 
 	s.host = h
 
-	// Gossipsub registration is done before we add in any new peers
+	// Gossip registration is done before we add in any new peers
 	// due to libp2p's gossipsub implementation not taking into
 	// account previously added peers when creating the gossipsub
 	// object.
@@ -241,6 +249,25 @@ func (s *Service) Start() {
 
 		s.dv5Listener = listener
 		go s.listenForNewNodes()
+		crawler, err := NewGossipPeerCrawler(
+			s.ctx,
+			s,
+			s.dv5Listener,
+			crawlTimeout,
+			crawlInterval,
+			maxConcurrentDials,
+			s.filterPeer,
+			s.Peers().Scorers().Score,
+		)
+		if err != nil {
+			log.WithError(err).Fatal("Failed to create peer crawler")
+			s.startupErr = err
+			return
+		}
+		s.crawler = crawler
+		// Initialise the gossipsub dialer which will be started
+		// once the sync service is ready to provide subnet topics.
+		s.gossipDialer = NewGossipPeerDialer(s.ctx, s.crawler, s.PubSub().ListPeers, s.DialPeers)
 	}
 
 	s.started = true
@@ -311,12 +338,25 @@ func (s *Service) Start() {
 func (s *Service) Stop() error {
 	defer s.cancel()
 	s.started = false
+
 	if s.dv5Listener != nil {
 		s.dv5Listener.Close()
 	}
+
 	return nil
 }
 
+// Crawler returns the p2p service's peer crawler.
+func (s *Service) Crawler() gossipcrawler.Crawler {
+	return s.crawler
+}
+
+// GossipDialer returns the dialer responsible for maintaining
+// peer counts per gossipsub topic, if discovery is enabled.
+func (s *Service) GossipDialer() gossipcrawler.GossipDialer {
+	return s.gossipDialer
+}
+
 // Status of the p2p service. Will return an error if the service is considered unhealthy to
 // indicate that this node should not serve traffic until the issue has been resolved.
 func (s *Service) Status() error {
@@ -557,3 +597,80 @@ func (s *Service) downscorePeer(peerID peer.ID, reason string) {
 	newScore := s.Peers().Scorers().BadResponsesScorer().Increment(peerID)
 	log.WithFields(logrus.Fields{"peerID": peerID, "reason": reason, "newScore": newScore}).Debug("Downscore peer")
 }
+
+func AttestationSubnets(nodeID enode.ID, node *enode.Node, record *enr.Record) (map[uint64]bool, error) {
+	return attestationSubnets(record)
+}
+
+func SyncSubnets(nodeID enode.ID, node *enode.Node, record *enr.Record) (map[uint64]bool, error) {
+	return syncSubnets(record)
+}
+
+func DataColumnSubnets(nodeID enode.ID, node *enode.Node, record *enr.Record) (map[uint64]bool, error) {
+	return dataColumnSubnets(nodeID, record)
+}
+
+func DataColumnSubnetTopic(digest [4]byte, subnet uint64) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(DataColumnSubnetTopicFormat, digest, subnet) + e.ProtocolSuffix()
+}
+
+func SyncCommitteeSubnetTopic(digest [4]byte, subnet uint64) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(SyncCommitteeSubnetTopicFormat, digest, subnet) + e.ProtocolSuffix()
+}
+
+func AttestationSubnetTopic(digest [4]byte, subnet uint64) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(AttestationSubnetTopicFormat, digest, subnet) + e.ProtocolSuffix()
+}
+
+func BlobSubnetTopic(digest [4]byte, subnet uint64) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(BlobSubnetTopicFormat, digest, subnet) + e.ProtocolSuffix()
+}
+
+func LcOptimisticToTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(LightClientOptimisticUpdateTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func LcFinalityToTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(LightClientFinalityUpdateTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func BlockSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(BlockSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func AggregateAndProofSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(AggregateAndProofSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func VoluntaryExitSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(ExitSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func ProposerSlashingSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(ProposerSlashingSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func AttesterSlashingSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(AttesterSlashingSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func SyncContributionAndProofSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(SyncContributionAndProofSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}
+
+func BlsToExecutionChangeSubnetTopic(forkDigest [4]byte) string {
+	e := &encoder.SszNetworkEncoder{}
+	return fmt.Sprintf(BlsToExecutionChangeSubnetTopicFormat, forkDigest) + e.ProtocolSuffix()
+}

beacon-chain/p2p/service_test.go

@@ -35,7 +35,8 @@ func createHost(t *testing.T, port uint) (host.Host, *ecdsa.PrivateKey, net.IP)
 	ipAddr := net.ParseIP("127.0.0.1")
 	listen, err := multiaddr.NewMultiaddr(fmt.Sprintf("/ip4/%s/tcp/%d", ipAddr, port))
 	require.NoError(t, err, "Failed to p2p listen")
-	h, err := libp2p.New([]libp2p.Option{privKeyOption(pkey), libp2p.ListenAddrs(listen), libp2p.Security(noise.ID, noise.New)}...)
+	h, err := libp2p.New([]libp2p.Option{privKeyOption(pkey), libp2p.ListenAddrs(listen),
+		libp2p.Security(noise.ID, noise.New)}...)
 	require.NoError(t, err)
 	return h, pkey, ipAddr
 }
@@ -80,9 +81,8 @@ func TestService_Start_OnlyStartsOnce(t *testing.T) {
 	}()
 	var vr [32]byte
 	require.NoError(t, cs.SetClock(startup.NewClock(time.Now(), vr)))
-	require.Eventually(t, func() bool {
-		return s.started
-	}, 5*time.Second, 100*time.Millisecond, "Expected service to be started")
+	time.Sleep(time.Second * 2)
+	assert.Equal(t, true, s.started, "Expected service to be started")
 	s.Start()
 	require.LogsContain(t, hook, "Attempted to start p2p service when it was already started")
 	require.NoError(t, s.Stop())
@@ -261,9 +261,17 @@ func TestListenForNewNodes(t *testing.T) {
 	err = cs.SetClock(startup.NewClock(genesisTime, gvr))
 	require.NoError(t, err, "Could not set clock in service")
 
-	require.Eventually(t, func() bool {
-		return len(s.host.Network().Peers()) == peerCount
-	}, 5*time.Second, 100*time.Millisecond, "Not all peers added to peerstore")
+	actualPeerCount := len(s.host.Network().Peers())
+	for range 40 {
+		if actualPeerCount == peerCount {
+			break
+		}
+
+		time.Sleep(100 * time.Millisecond)
+		actualPeerCount = len(s.host.Network().Peers())
+	}
+
+	assert.Equal(t, peerCount, actualPeerCount, "Not all peers added to peerstore")
 
 	err = s.Stop()
 	require.NoError(t, err, "Failed to stop service")

beacon-chain/p2p/subnets.go

@@ -3,9 +3,6 @@ package p2p
 import (
 	"context"
 	"fmt"
-	"maps"
-	"math"
-	"strings"
 	"sync"
 	"time"
 
@@ -14,19 +11,16 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/helpers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/peerdas"
 	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/wrapper"
 	"github.com/OffchainLabs/prysm/v7/crypto/hash"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
-	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
 	pb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/enr"
 	"github.com/holiman/uint256"
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
 )
 
 var (
@@ -61,223 +55,9 @@ const dataColumnSubnetVal = 150
 
 const errSavingSequenceNumber = "saving sequence number after updating subnets: %w"
 
-// nodeFilter returns a function that filters nodes based on the subnet topic and subnet index.
-func (s *Service) nodeFilter(topic string, indices map[uint64]int) (func(node *enode.Node) (map[uint64]bool, error), error) {
-	switch {
-	case strings.Contains(topic, GossipAttestationMessage):
-		return s.filterPeerForAttSubnet(indices), nil
-	case strings.Contains(topic, GossipSyncCommitteeMessage):
-		return s.filterPeerForSyncSubnet(indices), nil
-	case strings.Contains(topic, GossipBlobSidecarMessage):
-		return s.filterPeerForBlobSubnet(indices), nil
-	case strings.Contains(topic, GossipDataColumnSidecarMessage):
-		return s.filterPeerForDataColumnsSubnet(indices), nil
-	default:
-		return nil, errors.Errorf("no subnet exists for provided topic: %s", topic)
-	}
-}
-
-// FindAndDialPeersWithSubnets ensures that our node is connected to at least `minimumPeersPerSubnet`
-// peers for each subnet listed in `subnets`.
-// If, for all subnets, the threshold is met, then this function immediately returns.
-// Otherwise, it searches for new peers for defective subnets, and dials them.
-// If `ctx“ is canceled while searching for peers, search is stopped, but new found peers are still dialed.
-// In this case, the function returns an error.
-func (s *Service) FindAndDialPeersWithSubnets(
-	ctx context.Context,
-	topicFormat string,
-	digest [fieldparams.VersionLength]byte,
-	minimumPeersPerSubnet int,
-	subnets map[uint64]bool,
-) error {
-	ctx, span := trace.StartSpan(ctx, "p2p.FindAndDialPeersWithSubnet")
-	defer span.End()
-
-	// Return early if the discovery listener isn't set.
-	if s.dv5Listener == nil {
-		return nil
-	}
-
-	// Restrict dials if limit is applied.
-	maxConcurrentDials := math.MaxInt
-	if flags.MaxDialIsActive() {
-		maxConcurrentDials = flags.Get().MaxConcurrentDials
-	}
-
-	defectiveSubnets := s.defectiveSubnets(topicFormat, digest, minimumPeersPerSubnet, subnets)
-	for len(defectiveSubnets) > 0 {
-		// Stop the search/dialing loop if the context is canceled.
-		if err := ctx.Err(); err != nil {
-			return err
-		}
-
-		peersToDial, err := func() ([]*enode.Node, error) {
-			ctx, cancel := context.WithTimeout(ctx, batchPeriod)
-			defer cancel()
-
-			peersToDial, err := s.findPeersWithSubnets(ctx, topicFormat, digest, minimumPeersPerSubnet, defectiveSubnets)
-			if err != nil && !errors.Is(err, context.DeadlineExceeded) {
-				return nil, errors.Wrap(err, "find peers with subnets")
-			}
-
-			return peersToDial, nil
-		}()
-
-		if err != nil {
-			return err
-		}
-
-		// Dial new peers in batches.
-		s.dialPeers(s.ctx, maxConcurrentDials, peersToDial)
-
-		defectiveSubnets = s.defectiveSubnets(topicFormat, digest, minimumPeersPerSubnet, subnets)
-	}
-
-	return nil
-}
-
-// updateDefectiveSubnets updates the defective subnets map when a node with matching subnets is found.
-// It decrements the defective count for each subnet the node satisfies and removes subnets
-// that are fully satisfied (count reaches 0).
-func updateDefectiveSubnets(
-	nodeSubnets map[uint64]bool,
-	defectiveSubnets map[uint64]int,
-) {
-	for subnet := range defectiveSubnets {
-		if !nodeSubnets[subnet] {
-			continue
-		}
-		defectiveSubnets[subnet]--
-		if defectiveSubnets[subnet] == 0 {
-			delete(defectiveSubnets, subnet)
-		}
-	}
-}
-
-// findPeersWithSubnets finds peers subscribed to defective subnets in batches
-// until enough peers are found or the context is canceled.
-// It returns new peers found during the search.
-func (s *Service) findPeersWithSubnets(
-	ctx context.Context,
-	topicFormat string,
-	digest [fieldparams.VersionLength]byte,
-	minimumPeersPerSubnet int,
-	defectiveSubnetsOrigin map[uint64]int,
-) ([]*enode.Node, error) {
-	// Copy the defective subnets map to avoid modifying the original map.
-	defectiveSubnets := make(map[uint64]int, len(defectiveSubnetsOrigin))
-	maps.Copy(defectiveSubnets, defectiveSubnetsOrigin)
-
-	// Create an discovery iterator to find new peers.
-	iterator := s.dv5Listener.RandomNodes()
-
-	// `iterator.Next` can block indefinitely. `iterator.Close` unblocks it.
-	// So it is important to close the iterator when the context is done to ensure
-	// that the search does not hang indefinitely.
-	go func() {
-		<-ctx.Done()
-		iterator.Close()
-	}()
-
-	// Retrieve the filter function that will be used to filter nodes based on the defective subnets.
-	filter, err := s.nodeFilter(topicFormat, defectiveSubnets)
-	if err != nil {
-		return nil, errors.Wrap(err, "node filter")
-	}
-
-	// Crawl the network for peers subscribed to the defective subnets.
-	nodeByNodeID := make(map[enode.ID]*enode.Node)
-
-	for len(defectiveSubnets) > 0 && iterator.Next() {
-		if err := ctx.Err(); err != nil {
-			// Convert the map to a slice.
-			peersToDial := make([]*enode.Node, 0, len(nodeByNodeID))
-			for _, node := range nodeByNodeID {
-				peersToDial = append(peersToDial, node)
-			}
-
-			return peersToDial, err
-		}
-
-		node := iterator.Node()
-
-		// Remove duplicates, keeping the node with higher seq.
-		existing, ok := nodeByNodeID[node.ID()]
-		if ok && existing.Seq() >= node.Seq() {
-			continue // keep existing and skip.
-		}
-
-		// Treat nodes that exist in nodeByNodeID with higher seq numbers as new peers
-		// Skip peer not matching the filter.
-		if !s.filterPeer(node) {
-			if ok {
-				// this means the existing peer with the lower sequence number is no longer valid
-				delete(nodeByNodeID, existing.ID())
-				// Note: We are choosing to not rollback changes to the defective subnets map in favor of calling s.defectiveSubnets once again after dialing peers.
-				// This is a case that should rarely happen and should be handled through a second iteration in FindAndDialPeersWithSubnets
-			}
-			continue
-		}
-
-		// Get all needed subnets that the node is subscribed to.
-		// Skip nodes that are not subscribed to any of the defective subnets.
-		nodeSubnets, err := filter(node)
-		if err != nil {
-			log.WithError(err).WithFields(logrus.Fields{
-				"nodeID":      node.ID(),
-				"topicFormat": topicFormat,
-			}).Debug("Could not get needed subnets from peer")
-
-			continue
-		}
-
-		if len(nodeSubnets) == 0 {
-			continue
-		}
-
-		// We found a new peer. Modify the defective subnets map
-		// and the filter accordingly.
-		nodeByNodeID[node.ID()] = node
-
-		updateDefectiveSubnets(nodeSubnets, defectiveSubnets)
-		filter, err = s.nodeFilter(topicFormat, defectiveSubnets)
-		if err != nil {
-			return nil, errors.Wrap(err, "node filter")
-		}
-	}
-
-	// Convert the map to a slice.
-	peersToDial := make([]*enode.Node, 0, len(nodeByNodeID))
-	for _, node := range nodeByNodeID {
-		peersToDial = append(peersToDial, node)
-	}
-
-	return peersToDial, nil
-}
-
-// defectiveSubnets returns a map of subnets that have fewer than the minimum peer count.
-func (s *Service) defectiveSubnets(
-	topicFormat string,
-	digest [fieldparams.VersionLength]byte,
-	minimumPeersPerSubnet int,
-	subnets map[uint64]bool,
-) map[uint64]int {
-	missingCountPerSubnet := make(map[uint64]int, len(subnets))
-	for subnet := range subnets {
-		topic := fmt.Sprintf(topicFormat, digest, subnet) + s.Encoding().ProtocolSuffix()
-		peers := s.pubsub.ListPeers(topic)
-		peerCount := len(peers)
-		if peerCount < minimumPeersPerSubnet {
-			missingCountPerSubnet[subnet] = minimumPeersPerSubnet - peerCount
-		}
-	}
-
-	return missingCountPerSubnet
-}
-
-// dialPeers dials multiple peers concurrently up to `maxConcurrentDials` at a time.
+// DialPeers dials multiple peers concurrently up to `maxConcurrentDials` at a time.
 // In case of a dial failure, it logs the error but continues dialing other peers.
-func (s *Service) dialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
+func (s *Service) DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
 	var mut sync.Mutex
 
 	counter := uint(0)
@@ -319,75 +99,13 @@ func (s *Service) dialPeers(ctx context.Context, maxConcurrentDials int, nodes [
 	return counter
 }
 
-// filterPeerForAttSubnet returns a method with filters peers specifically for a particular attestation subnet.
-func (s *Service) filterPeerForAttSubnet(indices map[uint64]int) func(node *enode.Node) (map[uint64]bool, error) {
-	return func(node *enode.Node) (map[uint64]bool, error) {
-		if !s.filterPeer(node) {
-			return map[uint64]bool{}, nil
-		}
-
-		subnets, err := attestationSubnets(node.Record())
-		if err != nil {
-			return nil, errors.Wrap(err, "attestation subnets")
-		}
-
-		return intersect(indices, subnets), nil
-	}
-}
-
-// returns a method with filters peers specifically for a particular sync subnet.
-func (s *Service) filterPeerForSyncSubnet(indices map[uint64]int) func(node *enode.Node) (map[uint64]bool, error) {
-	return func(node *enode.Node) (map[uint64]bool, error) {
-		if !s.filterPeer(node) {
-			return map[uint64]bool{}, nil
-		}
-
-		subnets, err := syncSubnets(node.Record())
-		if err != nil {
-			return nil, errors.Wrap(err, "sync subnets")
-		}
-
-		return intersect(indices, subnets), nil
-	}
-}
-
-// returns a method with filters peers specifically for a particular blob subnet.
-// All peers are supposed to be subscribed to all blob subnets.
-func (s *Service) filterPeerForBlobSubnet(indices map[uint64]int) func(_ *enode.Node) (map[uint64]bool, error) {
-	result := make(map[uint64]bool, len(indices))
-	for i := range indices {
-		result[i] = true
-	}
-
-	return func(_ *enode.Node) (map[uint64]bool, error) {
-		return result, nil
-	}
-}
-
-// returns a method with filters peers specifically for a particular data column subnet.
-func (s *Service) filterPeerForDataColumnsSubnet(indices map[uint64]int) func(node *enode.Node) (map[uint64]bool, error) {
-	return func(node *enode.Node) (map[uint64]bool, error) {
-		if !s.filterPeer(node) {
-			return map[uint64]bool{}, nil
-		}
-
-		subnets, err := dataColumnSubnets(node.ID(), node.Record())
-		if err != nil {
-			return nil, errors.Wrap(err, "data column subnets")
-		}
-
-		return intersect(indices, subnets), nil
-	}
-}
-
 // lower threshold to broadcast object compared to searching
 // for a subnet. So that even in the event of poor peer
 // connectivity, we can still broadcast an attestation.
-func (s *Service) hasPeerWithSubnet(subnetTopic string) bool {
+func (s *Service) hasPeerWithTopic(topic string) bool {
 	// In the event peer threshold is lower, we will choose the lower
 	// threshold.
 	minPeers := min(1, flags.Get().MinimumPeersPerSubnet)
-	topic := subnetTopic + s.Encoding().ProtocolSuffix()
 	peersWithSubnet := s.pubsub.ListPeers(topic)
 	peersWithSubnetCount := len(peersWithSubnet)
 
@@ -712,16 +430,3 @@ func byteCount(bitCount int) int {
 	}
 	return numOfBytes
 }
-
-// interesect intersects two maps and returns a new map containing only the keys
-// that are present in both maps.
-func intersect(left map[uint64]int, right map[uint64]bool) map[uint64]bool {
-	result := make(map[uint64]bool, min(len(left), len(right)))
-	for i := range left {
-		if right[i] {
-			result[i] = true
-		}
-	}
-
-	return result
-}

beacon-chain/p2p/subnets_test.go

@@ -3,14 +3,15 @@ package p2p
 import (
 	"context"
 	"crypto/rand"
-	"fmt"
 	"testing"
 	"time"
 
 	"github.com/OffchainLabs/go-bitfield"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/cache"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/peerdas"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/db"
 	testDB "github.com/OffchainLabs/prysm/v7/beacon-chain/db/testing"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers/scorers"
 	testp2p "github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/testing"
@@ -24,6 +25,7 @@ import (
 	"github.com/ethereum/go-ethereum/p2p/enr"
 	"github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/libp2p/go-libp2p/core/network"
+	require2 "github.com/stretchr/testify/require"
 )
 
 func TestStartDiscV5_FindAndDialPeersWithSubnet(t *testing.T) {
@@ -122,6 +124,21 @@ func TestStartDiscV5_FindAndDialPeersWithSubnet(t *testing.T) {
 		// Start the service.
 		service.Start()
 
+		// start the crawler with a topic extractor that maps ENR attestation subnets
+		// to full attestation topics for the current fork digest and encoding.
+		_ = service.Crawler().Start(func(ctx context.Context, node *enode.Node) ([]string, error) {
+			subs, err := attestationSubnets(node.Record())
+			if err != nil {
+				return nil, err
+			}
+			var topics []string
+			for subnet := range subs {
+				t := AttestationSubnetTopic(bootNodeForkDigest, subnet)
+				topics = append(topics, t)
+			}
+			return topics, nil
+		})
+
 		// Set the ENR `attnets`, used by Prysm to filter peers by subnet.
 		bitV := bitfield.NewBitvector64()
 		bitV.SetBitAt(i, true)
@@ -129,7 +146,7 @@ func TestStartDiscV5_FindAndDialPeersWithSubnet(t *testing.T) {
 		service.dv5Listener.LocalNode().Set(entry)
 
 		// Join and subscribe to the subnet, needed by libp2p.
-		topicName := fmt.Sprintf(AttestationSubnetTopicFormat, bootNodeForkDigest, i) + "/ssz_snappy"
+		topicName := AttestationSubnetTopic(bootNodeForkDigest, i)
 		topic, err := service.pubsub.Join(topicName)
 		require.NoError(t, err)
 
@@ -169,23 +186,65 @@ func TestStartDiscV5_FindAndDialPeersWithSubnet(t *testing.T) {
 	close(service.custodyInfoSet)
 
 	service.Start()
+
+	subnets := map[uint64]bool{1: true, 2: true, 3: true}
+	var topics []string
+	for subnet := range subnets {
+		t := AttestationSubnetTopic(bootNodeForkDigest, subnet)
+		topics = append(topics, t)
+	}
+
+	// start the crawler with a topic extractor that maps ENR attestation subnets
+	// to full attestation topics for the current fork digest and encoding.
+	_ = service.Crawler().Start(func(ctx context.Context, node *enode.Node) ([]string, error) {
+		var topics []string
+		subs, err := attestationSubnets(node.Record())
+		if err != nil {
+			return nil, err
+		}
+		for subnet := range subs {
+			t := AttestationSubnetTopic(bootNodeForkDigest, subnet)
+			topics = append(topics, t)
+		}
+		return topics, nil
+	})
 	defer func() {
 		err := service.Stop()
 		require.NoError(t, err)
 	}()
 
-	subnets := map[uint64]bool{1: true, 2: true, 3: true}
-	defectiveSubnets := service.defectiveSubnets(AttestationSubnetTopicFormat, bootNodeForkDigest, minimumPeersPerSubnet, subnets)
-	require.Equal(t, subnetCount, len(defectiveSubnets))
+	builder := func(idx uint64) string {
+		return AttestationSubnetTopic(bootNodeForkDigest, idx)
+	}
+	defectiveSubnetsCount := defectiveSubnets(service, topics, minimumPeersPerSubnet)
+	require.Equal(t, subnetCount, defectiveSubnetsCount)
 
-	ctxWithTimeOut, cancel := context.WithTimeout(ctx, 5*time.Second)
+	var topicsToDial []string
+	for s := range subnets {
+		topicsToDial = append(topicsToDial, builder(s))
+	}
+
+	ctx, cancel := context.WithTimeout(ctx, 15*time.Second)
 	defer cancel()
 
-	err = service.FindAndDialPeersWithSubnets(ctxWithTimeOut, AttestationSubnetTopicFormat, bootNodeForkDigest, minimumPeersPerSubnet, subnets)
-	require.NoError(t, err)
+	for _, topic := range topicsToDial {
+		err = service.GossipDialer().DialPeersForTopicBlocking(ctx, topic, minimumPeersPerSubnet)
+		require.NoError(t, err)
+	}
 
-	defectiveSubnets = service.defectiveSubnets(AttestationSubnetTopicFormat, bootNodeForkDigest, minimumPeersPerSubnet, subnets)
-	require.Equal(t, 0, len(defectiveSubnets))
+	defectiveSubnetsCount = defectiveSubnets(service, topics, minimumPeersPerSubnet)
+	require.Equal(t, 0, defectiveSubnetsCount)
+}
+
+func defectiveSubnets(service *Service, topics []string, minimumPeersPerSubnet int) int {
+	count := 0
+	for _, topic := range topics {
+		peers := service.pubsub.ListPeers(topic)
+		if len(peers) < minimumPeersPerSubnet {
+			count++
+		}
+	}
+	return count
 }
 
 func Test_AttSubnets(t *testing.T) {
@@ -581,7 +640,6 @@ func TestFindPeersWithSubnets_NodeDeduplication(t *testing.T) {
 	cache.SubnetIDs.EmptyAllCaches()
 	defer cache.SubnetIDs.EmptyAllCaches()
 
-	ctx := context.Background()
 	db := testDB.SetupDB(t)
 
 	localNode1 := createTestNodeWithID(t, "node1")
@@ -742,47 +800,13 @@ func TestFindPeersWithSubnets_NodeDeduplication(t *testing.T) {
 			flags.Init(gFlags)
 			defer flags.Init(new(flags.GlobalFlags))
 
-			fakePeer := testp2p.NewTestP2P(t)
-
-			s := &Service{
-				cfg: &Config{
-					MaxPeers: 30,
-					DB:       db,
-				},
-				genesisTime:           time.Now(),
-				genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
-				peers: peers.NewStatus(ctx, &peers.StatusConfig{
-					PeerLimit:    30,
-					ScorerParams: &scorers.Config{},
-				}),
-				host: fakePeer.BHost,
-			}
-
+			s := createTestService(t, db)
 			localNode := createTestNodeRandom(t)
-
 			mockIter := testp2p.NewMockIterator(tt.nodes)
 			s.dv5Listener = testp2p.NewMockListener(localNode, mockIter)
 
-			digest, err := s.currentForkDigest()
-			require.NoError(t, err)
-
-			ctxWithTimeout, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-			defer cancel()
-
-			result, err := s.findPeersWithSubnets(
-				ctxWithTimeout,
-				AttestationSubnetTopicFormat,
-				digest,
-				1,
-				tt.defectiveSubnets,
-			)
-
-			require.NoError(t, err, tt.description)
-			require.Equal(t, tt.expectedCount, len(result), tt.description)
-
-			if tt.eval != nil {
-				tt.eval(t, result)
-			}
+			crawler := startTestCrawler(t, s, s.dv5Listener.(*testp2p.MockListener))
+			verifyCrawlerPeers(t, crawler, s, tt.defectiveSubnets, tt.expectedCount, tt.description, tt.eval)
 		})
 	}
 }
@@ -792,7 +816,6 @@ func TestFindPeersWithSubnets_FilterPeerRemoval(t *testing.T) {
 	cache.SubnetIDs.EmptyAllCaches()
 	defer cache.SubnetIDs.EmptyAllCaches()
 
-	ctx := context.Background()
 	db := testDB.SetupDB(t)
 
 	localNode1 := createTestNodeWithID(t, "node1")
@@ -945,23 +968,7 @@ func TestFindPeersWithSubnets_FilterPeerRemoval(t *testing.T) {
 			flags.Init(gFlags)
 			defer flags.Init(new(flags.GlobalFlags))
 
-			// Create test P2P instance
-			fakePeer := testp2p.NewTestP2P(t)
-
-			// Create mock service
-			s := &Service{
-				cfg: &Config{
-					MaxPeers: 30,
-					DB:       db,
-				},
-				genesisTime:           time.Now(),
-				genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
-				peers: peers.NewStatus(ctx, &peers.StatusConfig{
-					PeerLimit:    30,
-					ScorerParams: &scorers.Config{},
-				}),
-				host: fakePeer.BHost,
-			}
+			s := createTestService(t, db)
 
 			// Mark specific node versions as "bad" to simulate filterPeer failures
 			for _, node := range tt.nodes {
@@ -979,30 +986,11 @@ func TestFindPeersWithSubnets_FilterPeerRemoval(t *testing.T) {
 			}
 
 			localNode := createTestNodeRandom(t)
-
 			mockIter := testp2p.NewMockIterator(tt.nodes)
 			s.dv5Listener = testp2p.NewMockListener(localNode, mockIter)
 
-			digest, err := s.currentForkDigest()
-			require.NoError(t, err)
-
-			ctxWithTimeout, cancel := context.WithTimeout(ctx, 100*time.Millisecond)
-			defer cancel()
-
-			result, err := s.findPeersWithSubnets(
-				ctxWithTimeout,
-				AttestationSubnetTopicFormat,
-				digest,
-				1,
-				tt.defectiveSubnets,
-			)
-
-			require.NoError(t, err, tt.description)
-			require.Equal(t, tt.expectedCount, len(result), tt.description)
-
-			if tt.eval != nil {
-				tt.eval(t, result)
-			}
+			crawler := startTestCrawler(t, s, s.dv5Listener.(*testp2p.MockListener))
+			verifyCrawlerPeers(t, crawler, s, tt.defectiveSubnets, tt.expectedCount, tt.description, tt.eval)
 		})
 	}
 }
@@ -1046,7 +1034,6 @@ func TestFindPeersWithSubnets_received_bad_existing_node(t *testing.T) {
 	cache.SubnetIDs.EmptyAllCaches()
 	defer cache.SubnetIDs.EmptyAllCaches()
 
-	ctx := context.Background()
 	db := testDB.SetupDB(t)
 
 	// Create LocalNode with same ID but different sequences
@@ -1067,21 +1054,7 @@ func TestFindPeersWithSubnets_received_bad_existing_node(t *testing.T) {
 	flags.Init(gFlags)
 	defer flags.Init(new(flags.GlobalFlags))
 
-	fakePeer := testp2p.NewTestP2P(t)
-
-	service := &Service{
-		cfg: &Config{
-			MaxPeers: 30,
-			DB:       db,
-		},
-		genesisTime:           time.Now(),
-		genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
-		peers: peers.NewStatus(ctx, &peers.StatusConfig{
-			PeerLimit:    30,
-			ScorerParams: &scorers.Config{},
-		}),
-		host: fakePeer.BHost,
-	}
+	service := createTestService(t, db)
 
 	// Create iterator with callback that marks peer as bad before processing node1_seq2
 	iter := &callbackIteratorForSubnets{
@@ -1105,22 +1078,80 @@ func TestFindPeersWithSubnets_received_bad_existing_node(t *testing.T) {
 	localNode := createTestNodeRandom(t)
 	service.dv5Listener = testp2p.NewMockListener(localNode, iter)
 
-	digest, err := service.currentForkDigest()
-	require.NoError(t, err)
+	crawler := startTestCrawler(t, service, service.dv5Listener.(*testp2p.MockListener))
 
-	// Run findPeersWithSubnets - node1_seq1 gets processed first, then callback marks peer bad, then node1_seq2 fails
-	ctxWithTimeout, cancel := context.WithTimeout(ctx, 1*time.Second)
-	defer cancel()
-
-	result, err := service.findPeersWithSubnets(
-		ctxWithTimeout,
-		AttestationSubnetTopicFormat,
-		digest,
-		1,
-		map[uint64]int{1: 2}, // Need 2 peers for subnet 1
-	)
-
-	require.NoError(t, err)
-	require.Equal(t, 1, len(result))
-	require.Equal(t, localNode2.Node().ID(), result[0].ID()) // only node2 should remain
+	// Verification using verifyCrawlerPeers with a custom eval function
+	verifyCrawlerPeers(t, crawler, service, map[uint64]int{1: 1}, 1, "only node2 should remain", func(t *testing.T, result []*enode.Node) {
+		require.Equal(t, localNode2.Node().ID(), result[0].ID())
+	})
+}
+
+func createTestService(t *testing.T, d db.Database) *Service {
+	fakePeer := testp2p.NewTestP2P(t)
+	s := &Service{
+		cfg: &Config{
+			MaxPeers: 30,
+			DB:       d,
+		},
+		genesisTime:           time.Now(),
+		genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
+		peers: peers.NewStatus(t.Context(), &peers.StatusConfig{
+			PeerLimit:    30,
+			ScorerParams: &scorers.Config{},
+		}),
+		host: fakePeer.BHost,
+	}
+	return s
+}
+
+func startTestCrawler(t *testing.T, s *Service, listener *testp2p.MockListener) *GossipPeerCrawler {
+	digest, err := s.currentForkDigest()
+	require.NoError(t, err)
+	crawler, err := NewGossipPeerCrawler(t.Context(), s, listener,
+		1*time.Second, 100*time.Millisecond, 10, gossipcrawler.PeerFilterFunc(s.filterPeer),
+		s.Peers().Scorers().Score)
+	require.NoError(t, err)
+	s.crawler = crawler
+	require.NoError(t, crawler.Start(func(ctx context.Context, n *enode.Node) ([]string, error) {
+		subs, err := attestationSubnets(n.Record())
+		if err != nil {
+			return nil, err
+		}
+		var topics []string
+		for subnet := range subs {
+			t := AttestationSubnetTopic(digest, subnet)
+			topics = append(topics, t)
+		}
+		return topics, nil
+	}))
+	return crawler
+}
+
+func verifyCrawlerPeers(t *testing.T, crawler *GossipPeerCrawler, s *Service, subnets map[uint64]int, expectedCount int, description string, eval func(t *testing.T, result []*enode.Node)) {
+	digest, err := s.currentForkDigest()
+	require.NoError(t, err)
+	var topics []string
+	for subnet := range subnets {
+		topics = append(topics, AttestationSubnetTopic(digest, subnet))
+	}
+
+	var results []*enode.Node
+	require2.Eventually(t, func() bool {
+		results = results[:0]
+		seen := make(map[enode.ID]struct{})
+		for _, topic := range topics {
+			peers := crawler.PeersForTopic(topic)
+			for _, peer := range peers {
+				if _, ok := seen[peer.ID()]; !ok {
+					seen[peer.ID()] = struct{}{}
+					results = append(results, peer)
+				}
+			}
+		}
+		return len(results) == expectedCount
+	}, 1*time.Second, 100*time.Millisecond, description)
+
+	if eval != nil {
+		eval(t, results)
+	}
 }

beacon-chain/p2p/testing/BUILD.bazel

@@ -21,9 +21,9 @@ go_library(
     deps = [
         "//beacon-chain/core/peerdas:go_default_library",
         "//beacon-chain/p2p/encoder:go_default_library",
+        "//beacon-chain/p2p/gossipcrawler:go_default_library",
         "//beacon-chain/p2p/peers:go_default_library",
         "//beacon-chain/p2p/peers/scorers:go_default_library",
-        "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",

beacon-chain/p2p/testing/fuzz_p2p.go

@@ -4,8 +4,8 @@ import (
 	"context"
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/encoder"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -41,6 +41,20 @@ func (*FakeP2P) AddConnectionHandler(_, _ func(ctx context.Context, id peer.ID)
 
 }
 
+// Crawler -- fake.
+func (*FakeP2P) Crawler() gossipcrawler.Crawler {
+	return &MockCrawler{}
+}
+
+// GossipDialer -- fake.
+func (*FakeP2P) GossipDialer() gossipcrawler.GossipDialer {
+	return nil
+}
+
+func (*FakeP2P) Started() bool {
+	return true
+}
+
 // AddDisconnectionHandler -- fake.
 func (*FakeP2P) AddDisconnectionHandler(_ func(ctx context.Context, id peer.ID) error) {
 }
@@ -70,11 +84,6 @@ func (*FakeP2P) DiscoveryAddresses() ([]multiaddr.Multiaddr, error) {
 	return nil, nil
 }
 
-// FindAndDialPeersWithSubnets mocks the p2p func.
-func (*FakeP2P) FindAndDialPeersWithSubnets(ctx context.Context, topicFormat string, digest [fieldparams.VersionLength]byte, minimumPeersPerSubnet int, subnets map[uint64]bool) error {
-	return nil
-}
-
 // RefreshPersistentSubnets mocks the p2p func.
 func (*FakeP2P) RefreshPersistentSubnets() {}
 
@@ -93,6 +102,11 @@ func (*FakeP2P) Peers() *peers.Status {
 	return nil
 }
 
+// DialPeers -- fake.
+func (*FakeP2P) DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
+	return 0
+}
+
 // PublishToTopic -- fake.
 func (*FakeP2P) PublishToTopic(_ context.Context, _ string, _ []byte, _ ...pubsub.PubOpt) error {
 	return nil

beacon-chain/p2p/testing/mock_peermanager.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"errors"
 
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/ethereum/go-ethereum/p2p/enode"
 	"github.com/ethereum/go-ethereum/p2p/enr"
 	"github.com/libp2p/go-libp2p/core/host"
@@ -19,6 +19,7 @@ type MockPeerManager struct {
 	BHost             host.Host
 	DiscoveryAddr     []multiaddr.Multiaddr
 	FailDiscoveryAddr bool
+	Dialer            gossipcrawler.GossipDialer
 }
 
 // Disconnect .
@@ -46,6 +47,11 @@ func (m MockPeerManager) NodeID() enode.ID {
 	return enode.ID{}
 }
 
+// GossipDialer returns the configured dialer mock, if any.
+func (m MockPeerManager) GossipDialer() gossipcrawler.GossipDialer {
+	return m.Dialer
+}
+
 // DiscoveryAddresses .
 func (m *MockPeerManager) DiscoveryAddresses() ([]multiaddr.Multiaddr, error) {
 	if m.FailDiscoveryAddr {
@@ -57,10 +63,15 @@ func (m *MockPeerManager) DiscoveryAddresses() ([]multiaddr.Multiaddr, error) {
 // RefreshPersistentSubnets .
 func (*MockPeerManager) RefreshPersistentSubnets() {}
 
-// FindAndDialPeersWithSubnet .
-func (*MockPeerManager) FindAndDialPeersWithSubnets(ctx context.Context, topicFormat string, digest [fieldparams.VersionLength]byte, minimumPeersPerSubnet int, subnets map[uint64]bool) error {
-	return nil
+// DialPeers
+func (p *MockPeerManager) DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
+	return 0
 }
 
 // AddPingMethod .
 func (*MockPeerManager) AddPingMethod(_ func(ctx context.Context, id peer.ID) error) {}
+
+// Crawler.
+func (*MockPeerManager) Crawler() gossipcrawler.Crawler {
+	return nil
+}

beacon-chain/p2p/testing/p2p.go

@@ -13,9 +13,9 @@ import (
 
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/peerdas"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/encoder"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/gossipcrawler"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/peers/scorers"
-	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
@@ -66,6 +66,7 @@ type TestP2P struct {
 	earliestAvailableSlot primitives.Slot
 	custodyGroupCount     uint64
 	enr                   *enr.Record
+	dialer                gossipcrawler.GossipDialer
 }
 
 // NewTestP2P initializes a new p2p test service.
@@ -119,6 +120,10 @@ func NewTestP2PWithPubsubOptions(t *testing.T, pubsubOpts []pubsub.Option, userO
 	}
 }
 
+func (p *TestP2P) Status() error {
+	return nil
+}
+
 // Connect two test peers together.
 func (p *TestP2P) Connect(b *TestP2P) {
 	if err := connect(p.BHost, b.BHost); err != nil {
@@ -192,11 +197,7 @@ func (p *TestP2P) ReceivePubSub(topic string, msg proto.Message) {
 	if _, err := p.Encoding().EncodeGossip(buf, castedMsg); err != nil {
 		p.t.Fatalf("Failed to encode message: %v", err)
 	}
-	digest, err := p.ForkDigest()
-	if err != nil {
-		p.t.Fatal(err)
-	}
-	topicHandle, err := ps.Join(fmt.Sprintf(topic, digest) + p.Encoding().ProtocolSuffix())
+	topicHandle, err := ps.Join(topic)
 	if err != nil {
 		p.t.Fatal(err)
 	}
@@ -288,6 +289,9 @@ func (p *TestP2P) SubscribeToTopic(topic string, opts ...pubsub.SubOpt) (*pubsub
 // LeaveTopic closes topic and removes corresponding handler from list of joined topics.
 // This method will return error if there are outstanding event handlers or subscriptions.
 func (p *TestP2P) LeaveTopic(topic string) error {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
 	if t, ok := p.joinedTopics[topic]; ok {
 		if err := t.Close(); err != nil {
 			return err
@@ -428,9 +432,8 @@ func (p *TestP2P) Peers() *peers.Status {
 	return p.peers
 }
 
-// FindAndDialPeersWithSubnets mocks the p2p func.
-func (*TestP2P) FindAndDialPeersWithSubnets(ctx context.Context, topicFormat string, digest [fieldparams.VersionLength]byte, minimumPeersPerSubnet int, subnets map[uint64]bool) error {
-	return nil
+func (p *TestP2P) DialPeers(ctx context.Context, maxConcurrentDials int, nodes []*enode.Node) uint {
+	return 0
 }
 
 // RefreshPersistentSubnets mocks the p2p func.
@@ -567,3 +570,43 @@ func (s *TestP2P) custodyGroupCountFromPeerENR(pid peer.ID) uint64 {
 
 	return custodyGroupCount
 }
+
+// MockCrawler is a minimal mock implementation of PeerCrawler for testing
+type MockCrawler struct{}
+
+// Start does nothing as this is a mock
+func (m *MockCrawler) Start(gossipcrawler.TopicExtractor) error {
+	return nil
+}
+
+// Stop does nothing as this is a mock
+func (m *MockCrawler) Stop() {}
+
+// SetTopicExtractor does nothing as this is a mock
+func (m *MockCrawler) SetTopicExtractor(extractor func(context.Context, *enode.Node) ([]string, error)) error {
+	return nil
+}
+
+// RemoveTopic does nothing as this is a mock
+func (m *MockCrawler) RemoveTopic(topic string) {}
+
+// RemovePeerID does nothing as this is a mock
+func (m *MockCrawler) RemovePeerByPeerId(pid peer.ID) {}
+
+// PeersForTopic returns empty list as this is a mock
+func (m *MockCrawler) PeersForTopic(topic string) []*enode.Node {
+	return []*enode.Node{}
+}
+
+// TriggerCrawl does nothing as this is a mock
+func (m *MockCrawler) TriggerCrawl() {}
+
+// Crawler returns a mock crawler implementation for testing.
+func (*TestP2P) Crawler() gossipcrawler.Crawler {
+	return &MockCrawler{}
+}
+
+// GossipDialer returns nil for tests that do not exercise dialer behaviour.
+func (p *TestP2P) GossipDialer() gossipcrawler.GossipDialer {
+	return p.dialer
+}

beacon-chain/rpc/endpoints.go

@@ -575,7 +575,7 @@ func (s *Service) beaconEndpoints(
 			name:     namespace + ".PublishBlockV2",
 			middleware: []middleware.Middleware{
 				middleware.ContentTypeHandler([]string{api.JsonMediaType, api.OctetStreamMediaType}),
-				middleware.AcceptHeaderHandler([]string{api.JsonMediaType, api.OctetStreamMediaType}),
+				middleware.AcceptHeaderHandler([]string{api.JsonMediaType}),
 				middleware.AcceptEncodingHeaderHandler(),
 			},
 			handler: server.PublishBlockV2,
@@ -586,7 +586,7 @@ func (s *Service) beaconEndpoints(
 			name:     namespace + ".PublishBlindedBlockV2",
 			middleware: []middleware.Middleware{
 				middleware.ContentTypeHandler([]string{api.JsonMediaType, api.OctetStreamMediaType}),
-				middleware.AcceptHeaderHandler([]string{api.JsonMediaType, api.OctetStreamMediaType}),
+				middleware.AcceptHeaderHandler([]string{api.JsonMediaType}),
 				middleware.AcceptEncodingHeaderHandler(),
 			},
 			handler: server.PublishBlindedBlockV2,