Add hashtree for hashing

* Proposer checks gas limit before accepting builder's bid

* James feedback

* Use cache

.github/actions/gomodtidy/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine
+FROM golang:1.22-alpine
 
 COPY entrypoint.sh /entrypoint.sh
 

.github/workflows/fuzz.yml

@@ -16,7 +16,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.21.5'
+          go-version: '1.22.3'
       - id: list
         uses: shogo82148/actions-go-fuzz/list@v0
         with:
@@ -36,7 +36,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.21.5'
+          go-version: '1.22.3'
       - uses: shogo82148/actions-go-fuzz/run@v0
         with:
           packages: ${{ matrix.package }}

.github/workflows/go.yml

@@ -28,14 +28,14 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Set up Go 1.21
+      - name: Set up Go 1.22
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21.5'
+          go-version: '1.22.3'
       - name: Run Gosec Security Scanner
         run: | # https://github.com/securego/gosec/issues/469
           export PATH=$PATH:$(go env GOPATH)/bin
-          go install github.com/securego/gosec/v2/cmd/gosec@v2.15.0
+          go install github.com/securego/gosec/v2/cmd/gosec@v2.19.0
           gosec -exclude-generated -exclude=G307 -exclude-dir=crypto/bls/herumi ./...
 
   lint:
@@ -45,10 +45,10 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up Go 1.21
+      - name: Set up Go 1.22
         uses: actions/setup-go@v3
         with:
-          go-version: '1.21.5'
+          go-version: '1.22.3'
           id: go
 
       - name: Golangci-lint
@@ -64,7 +64,7 @@ jobs:
       - name: Set up Go 1.x
         uses: actions/setup-go@v2
         with:
-          go-version: '1.21.5'
+          go-version: '1.22.3'
         id: go
 
       - name: Check out code into the Go module directory

.golangci.yml

@@ -6,7 +6,7 @@ run:
     - proto
     - tools/analyzers
   timeout: 10m
-  go: '1.21.5'
+  go: '1.22.3'
 
 linters:
   enable-all: true
@@ -34,7 +34,6 @@ linters:
     - dogsled
     - dupl
     - durationcheck
-    - errorlint
     - exhaustive
     - exhaustruct
     - forbidigo
@@ -52,6 +51,7 @@ linters:
     - gofumpt
     - gomnd
     - gomoddirectives
+    - gosec
     - inamedparam
     - interfacebloat
     - ireturn

BUILD.bazel

@@ -224,6 +224,7 @@ nogo(
         "@org_golang_x_tools//go/analysis/passes/deepequalerrors:go_default_library",
         "@org_golang_x_tools//go/analysis/passes/defers:go_default_library",
         "@org_golang_x_tools//go/analysis/passes/directive:go_default_library",
+        "@org_golang_x_tools//go/analysis/passes/errorsas:go_default_library",
         # fieldalignment disabled
         #"@org_golang_x_tools//go/analysis/passes/fieldalignment:go_default_library",
         "@org_golang_x_tools//go/analysis/passes/findcall:go_default_library",

WORKSPACE

@@ -182,7 +182,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_register_toolchains", "go_rules_depe
 go_rules_dependencies()
 
 go_register_toolchains(
-    go_version = "1.21.8",
+    go_version = "1.22.4",
     nogo = "@//:nogo",
 )
 
@@ -227,7 +227,7 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.5.0-alpha.2"
+consensus_spec_version = "v1.5.0-alpha.4"
 
 bls_test_version = "v0.1.1"
 
@@ -243,7 +243,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-NNXBa7SZ2sFb68HPNahgu1p0yDBpjuKJuLfRCl7vvoQ=",
+    integrity = "sha256-sSw6c9IR/ZiWjyk1cbfVGC/aUkId4r7+eSl3haWsq0E=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )
 
@@ -259,7 +259,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-7BnlBvGWU92iAB100cMaAXVQhRrqpMQbavgrI+/paCw=",
+    integrity = "sha256-OGlKhbA6TjTP0p1ojXVCJPzLEHJzewKkhAa+PQggoiU=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )
 
@@ -275,7 +275,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-VCHhcNt+fynf/sHK11qbRBAy608u9T1qAafvAGfxQhA=",
+    integrity = "sha256-ah2Gj4ci5hw5vQgpUWkNjEQutoBCepg5jcpTi0DKVB0=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )
 
@@ -290,7 +290,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-a2aCNFyFkYLtf6QSwGOHdx7xXHjA2NNT8x8ZuxB0aes=",
+    integrity = "sha256-I+llAsIF6lPP8RUtZ2DFsJqtCs4UPh+st3hFs12FWpY=",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )
@@ -332,14 +332,14 @@ http_archive(
 filegroup(
     name = "configs",
     srcs = [
-        "custom_config_data/config.yaml",
+        "metadata/config.yaml",
     ],
     visibility = ["//visibility:public"],
 )
 """,
-    sha256 = "5f4be6fd088683ea9db45c863b9c5a1884422449e5b59fd2d561d3ba0f73ffd9",
-    strip_prefix = "holesky-9d9aabf2d4de51334ee5fed6c79a4d55097d1a43",
-    url = "https://github.com/eth-clients/holesky/archive/9d9aabf2d4de51334ee5fed6c79a4d55097d1a43.tar.gz",  # 2024-01-22
+    integrity = "sha256-b7ZTT+olF+VXEJYNTV5jggNtCkt9dOejm1i2VE+zy+0=",
+    strip_prefix = "holesky-874c199423ccd180607320c38cbaca05d9a1573a",
+    url = "https://github.com/eth-clients/holesky/archive/874c199423ccd180607320c38cbaca05d9a1573a.tar.gz",  # 2024-06-18
 )
 
 http_archive(

api/client/beacon/checkpoint_test.go

@@ -9,22 +9,20 @@ import (
 	"net/http"
 	"testing"
 
+	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/api/client"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	blocktest "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks/testing"
-	"github.com/prysmaticlabs/prysm/v5/network/forks"
-	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/v5/testing/util"
-	"github.com/prysmaticlabs/prysm/v5/time/slots"
-
-	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/ssz/detect"
+	"github.com/prysmaticlabs/prysm/v5/network/forks"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
-
-	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
 type testRT struct {

api/client/builder/BUILD.bazel

@@ -55,6 +55,7 @@ go_test(
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
     ],

api/client/builder/types_test.go

@@ -12,6 +12,7 @@ import (
 	"testing"
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/go-bitfield"
 	"github.com/prysmaticlabs/prysm/v5/api/server/structs"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
@@ -1914,7 +1915,8 @@ func TestEmptyResponseBody(t *testing.T) {
 		var b []byte
 		r := &ExecutionPayloadResponse{}
 		err := json.Unmarshal(b, r)
-		_, ok := err.(*json.SyntaxError)
+		var syntaxError *json.SyntaxError
+		ok := errors.As(err, &syntaxError)
 		require.Equal(t, true, ok)
 	})
 	t.Run("empty object", func(t *testing.T) {

api/client/event/BUILD.bazel

@@ -2,7 +2,10 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
-    srcs = ["event_stream.go"],
+    srcs = [
+        "event_stream.go",
+        "utils.go",
+    ],
     importpath = "github.com/prysmaticlabs/prysm/v5/api/client/event",
     visibility = ["//visibility:public"],
     deps = [
@@ -15,7 +18,10 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["event_stream_test.go"],
+    srcs = [
+        "event_stream_test.go",
+        "utils_test.go",
+    ],
     embed = [":go_default_library"],
     deps = [
         "//testing/require:go_default_library",

api/client/event/event_stream.go

@@ -102,6 +102,8 @@ func (h *EventStream) Subscribe(eventsChannel chan<- *Event) {
 	}()
 	// Create a new scanner to read lines from the response body
 	scanner := bufio.NewScanner(resp.Body)
+	// Set the split function for the scanning operation
+	scanner.Split(scanLinesWithCarriage)
 
 	var eventType, data string // Variables to store event type and data
 
@@ -113,7 +115,7 @@ func (h *EventStream) Subscribe(eventsChannel chan<- *Event) {
 			close(eventsChannel)
 			return
 		default:
-			line := scanner.Text() // TODO(13730): scanner does not handle /r and does not fully adhere to https://html.spec.whatwg.org/multipage/server-sent-events.html#the-eventsource-interface
+			line := scanner.Text()
 			// Handle the event based on your specific format
 			if line == "" {
 				// Empty line indicates the end of an event

api/client/event/event_stream_test.go

@@ -43,8 +43,9 @@ func TestEventStream(t *testing.T) {
 	mux.HandleFunc("/eth/v1/events", func(w http.ResponseWriter, r *http.Request) {
 		flusher, ok := w.(http.Flusher)
 		require.Equal(t, true, ok)
-		for i := 1; i <= 2; i++ {
-			_, err := fmt.Fprintf(w, "event: head\ndata: data%d\n\n", i)
+		for i := 1; i <= 3; i++ {
+			events := [3]string{"event: head\ndata: data%d\n\n", "event: head\rdata: data%d\r\r", "event: head\r\ndata: data%d\r\n\r\n"}
+			_, err := fmt.Fprintf(w, events[i-1], i)
 			require.NoError(t, err)
 			flusher.Flush()                    // Trigger flush to simulate streaming data
 			time.Sleep(100 * time.Millisecond) // Simulate delay between events
@@ -62,7 +63,7 @@ func TestEventStream(t *testing.T) {
 	// Collect events
 	var events []*Event
 
-	for len(events) != 2 {
+	for len(events) != 3 {
 		select {
 		case event := <-eventsChannel:
 			log.Info(event)
@@ -71,7 +72,7 @@ func TestEventStream(t *testing.T) {
 	}
 
 	// Assertions to verify the events content
-	expectedData := []string{"data1", "data2"}
+	expectedData := []string{"data1", "data2", "data3"}
 	for i, event := range events {
 		if string(event.Data) != expectedData[i] {
 			t.Errorf("Expected event data %q, got %q", expectedData[i], string(event.Data))

api/client/event/utils.go

@@ -0,0 +1,36 @@
+package event
+
+import (
+	"bytes"
+)
+
+// adapted from ScanLines in scan.go to handle carriage return characters as separators
+func scanLinesWithCarriage(data []byte, atEOF bool) (advance int, token []byte, err error) {
+	if atEOF && len(data) == 0 {
+		return 0, nil, nil
+	}
+	if i, j := bytes.IndexByte(data, '\n'), bytes.IndexByte(data, '\r'); i >= 0 || j >= 0 {
+		in := i
+		// Select the first index of \n or \r or the second index of \r if it is followed by \n
+		if i < 0 || (i > j && i != j+1 && j >= 0) {
+			in = j
+		}
+
+		// We have a full newline-terminated line.
+		return in + 1, dropCR(data[0:in]), nil
+	}
+	// If we're at EOF, we have a final, non-terminated line. Return it.
+	if atEOF {
+		return len(data), dropCR(data), nil
+	}
+	// Request more data.
+	return 0, nil, nil
+}
+
+// dropCR drops a terminal \r from the data.
+func dropCR(data []byte) []byte {
+	if len(data) > 0 && data[len(data)-1] == '\r' {
+		return data[0 : len(data)-1]
+	}
+	return data
+}

api/client/event/utils_test.go

@@ -0,0 +1,97 @@
+package event
+
+import (
+	"bufio"
+	"bytes"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestScanLinesWithCarriage(t *testing.T) {
+	testCases := []struct {
+		name     string
+		input    string
+		expected []string
+	}{
+		{
+			name:     "LF line endings",
+			input:    "line1\nline2\nline3",
+			expected: []string{"line1", "line2", "line3"},
+		},
+		{
+			name:     "CR line endings",
+			input:    "line1\rline2\rline3",
+			expected: []string{"line1", "line2", "line3"},
+		},
+		{
+			name:     "CRLF line endings",
+			input:    "line1\r\nline2\r\nline3",
+			expected: []string{"line1", "line2", "line3"},
+		},
+		{
+			name:     "Mixed line endings",
+			input:    "line1\nline2\rline3\r\nline4",
+			expected: []string{"line1", "line2", "line3", "line4"},
+		},
+		{
+			name:     "Empty lines",
+			input:    "line1\n\nline2\r\rline3",
+			expected: []string{"line1", "", "line2", "", "line3"},
+		},
+		{
+			name:     "Empty lines 2",
+			input:    "line1\n\rline2\n\rline3",
+			expected: []string{"line1", "", "line2", "", "line3"},
+		},
+		{
+			name:     "No line endings",
+			input:    "single line without ending",
+			expected: []string{"single line without ending"},
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			scanner := bufio.NewScanner(bytes.NewReader([]byte(tc.input)))
+			scanner.Split(scanLinesWithCarriage)
+
+			var lines []string
+			for scanner.Scan() {
+				lines = append(lines, scanner.Text())
+			}
+
+			require.NoError(t, scanner.Err())
+			require.Equal(t, len(tc.expected), len(lines), "Number of lines does not match")
+			for i, line := range lines {
+				require.Equal(t, tc.expected[i], line, "Line %d does not match", i)
+			}
+		})
+	}
+}
+
+// TestScanLinesWithCarriageEdgeCases tests edge cases and potential error scenarios
+func TestScanLinesWithCarriageEdgeCases(t *testing.T) {
+	t.Run("Empty input", func(t *testing.T) {
+		scanner := bufio.NewScanner(bytes.NewReader([]byte("")))
+		scanner.Split(scanLinesWithCarriage)
+		require.Equal(t, scanner.Scan(), false)
+		require.NoError(t, scanner.Err())
+	})
+
+	t.Run("Very long line", func(t *testing.T) {
+		longLine := bytes.Repeat([]byte("a"), bufio.MaxScanTokenSize+1)
+		scanner := bufio.NewScanner(bytes.NewReader(longLine))
+		scanner.Split(scanLinesWithCarriage)
+		require.Equal(t, scanner.Scan(), false)
+		require.NotNil(t, scanner.Err())
+	})
+
+	t.Run("Line ending at max token size", func(t *testing.T) {
+		input := append(bytes.Repeat([]byte("a"), bufio.MaxScanTokenSize-1), '\n')
+		scanner := bufio.NewScanner(bytes.NewReader(input))
+		scanner.Split(scanLinesWithCarriage)
+		require.Equal(t, scanner.Scan(), true)
+		require.Equal(t, string(bytes.Repeat([]byte("a"), bufio.MaxScanTokenSize-1)), scanner.Text())
+	})
+}

api/server/error.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 )
@@ -15,7 +16,8 @@ type DecodeError struct {
 // NewDecodeError wraps an error (either the initial decoding error or another DecodeError).
 // The current field that failed decoding must be passed in.
 func NewDecodeError(err error, field string) *DecodeError {
-	de, ok := err.(*DecodeError)
+	var de *DecodeError
+	ok := errors.As(err, &de)
 	if ok {
 		return &DecodeError{path: append([]string{field}, de.path...), err: de.err}
 	}

api/server/structs/conversions.go

@@ -8,11 +8,10 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/api/server"
-	"github.com/prysmaticlabs/prysm/v5/consensus-types/validator"
-	"github.com/prysmaticlabs/prysm/v5/container/slice"
-
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/validator"
+	"github.com/prysmaticlabs/prysm/v5/container/slice"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/math"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"

api/server/structs/endpoints_beacon.go

@@ -196,3 +196,48 @@ type DepositSnapshot struct {
 	ExecutionBlockHash   string   `json:"execution_block_hash"`
 	ExecutionBlockHeight string   `json:"execution_block_height"`
 }
+
+type GetIndividualVotesRequest struct {
+	Epoch      string   `json:"epoch"`
+	PublicKeys []string `json:"public_keys,omitempty"`
+	Indices    []string `json:"indices,omitempty"`
+}
+
+type GetIndividualVotesResponse struct {
+	IndividualVotes []*IndividualVote `json:"individual_votes"`
+}
+
+type IndividualVote struct {
+	Epoch                            string `json:"epoch"`
+	PublicKey                        string `json:"public_keys,omitempty"`
+	ValidatorIndex                   string `json:"validator_index"`
+	IsSlashed                        bool   `json:"is_slashed"`
+	IsWithdrawableInCurrentEpoch     bool   `json:"is_withdrawable_in_current_epoch"`
+	IsActiveInCurrentEpoch           bool   `json:"is_active_in_current_epoch"`
+	IsActiveInPreviousEpoch          bool   `json:"is_active_in_previous_epoch"`
+	IsCurrentEpochAttester           bool   `json:"is_current_epoch_attester"`
+	IsCurrentEpochTargetAttester     bool   `json:"is_current_epoch_target_attester"`
+	IsPreviousEpochAttester          bool   `json:"is_previous_epoch_attester"`
+	IsPreviousEpochTargetAttester    bool   `json:"is_previous_epoch_target_attester"`
+	IsPreviousEpochHeadAttester      bool   `json:"is_previous_epoch_head_attester"`
+	CurrentEpochEffectiveBalanceGwei string `json:"current_epoch_effective_balance_gwei"`
+	InclusionSlot                    string `json:"inclusion_slot"`
+	InclusionDistance                string `json:"inclusion_distance"`
+	InactivityScore                  string `json:"inactivity_score"`
+}
+
+type ChainHead struct {
+	HeadSlot                   string `json:"head_slot"`
+	HeadEpoch                  string `json:"head_epoch"`
+	HeadBlockRoot              string `json:"head_block_root"`
+	FinalizedSlot              string `json:"finalized_slot"`
+	FinalizedEpoch             string `json:"finalized_epoch"`
+	FinalizedBlockRoot         string `json:"finalized_block_root"`
+	JustifiedSlot              string `json:"justified_slot"`
+	JustifiedEpoch             string `json:"justified_epoch"`
+	JustifiedBlockRoot         string `json:"justified_block_root"`
+	PreviousJustifiedSlot      string `json:"previous_justified_slot"`
+	PreviousJustifiedEpoch     string `json:"previous_justified_epoch"`
+	PreviousJustifiedBlockRoot string `json:"previous_justified_block_root"`
+	OptimisticStatus           bool   `json:"optimistic_status"`
+}

api/server/structs/endpoints_validator.go

@@ -118,3 +118,34 @@ type GetValidatorPerformanceResponse struct {
 	MissingValidators             [][]byte `json:"missing_validators,omitempty"`
 	InactivityScores              []uint64 `json:"inactivity_scores,omitempty"`
 }
+
+type GetValidatorParticipationResponse struct {
+	Epoch         string                  `json:"epoch"`
+	Finalized     bool                    `json:"finalized"`
+	Participation *ValidatorParticipation `json:"participation"`
+}
+
+type ValidatorParticipation struct {
+	GlobalParticipationRate          string `json:"global_participation_rate" deprecated:"true"`
+	VotedEther                       string `json:"voted_ether" deprecated:"true"`
+	EligibleEther                    string `json:"eligible_ether" deprecated:"true"`
+	CurrentEpochActiveGwei           string `json:"current_epoch_active_gwei"`
+	CurrentEpochAttestingGwei        string `json:"current_epoch_attesting_gwei"`
+	CurrentEpochTargetAttestingGwei  string `json:"current_epoch_target_attesting_gwei"`
+	PreviousEpochActiveGwei          string `json:"previous_epoch_active_gwei"`
+	PreviousEpochAttestingGwei       string `json:"previous_epoch_attesting_gwei"`
+	PreviousEpochTargetAttestingGwei string `json:"previous_epoch_target_attesting_gwei"`
+	PreviousEpochHeadAttestingGwei   string `json:"previous_epoch_head_attesting_gwei"`
+}
+
+type ActiveSetChanges struct {
+	Epoch               string   `json:"epoch"`
+	ActivatedPublicKeys []string `json:"activated_public_keys"`
+	ActivatedIndices    []string `json:"activated_indices"`
+	ExitedPublicKeys    []string `json:"exited_public_keys"`
+	ExitedIndices       []string `json:"exited_indices"`
+	SlashedPublicKeys   []string `json:"slashed_public_keys"`
+	SlashedIndices      []string `json:"slashed_indices"`
+	EjectedPublicKeys   []string `json:"ejected_public_keys"`
+	EjectedIndices      []string `json:"ejected_indices"`
+}

beacon-chain/blockchain/BUILD.bazel

@@ -64,6 +64,7 @@ go_library(
         "//beacon-chain/operations/slashings:go_default_library",
         "//beacon-chain/operations/voluntaryexits:go_default_library",
         "//beacon-chain/p2p:go_default_library",
+        "//beacon-chain/slasher/types:go_default_library",
         "//beacon-chain/startup:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/stategen:go_default_library",
@@ -138,6 +139,7 @@ go_test(
         "//beacon-chain/blockchain/testing:go_default_library",
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/cache/depositsnapshot:go_default_library",
+        "//beacon-chain/core/altair:go_default_library",
         "//beacon-chain/core/blocks:go_default_library",
         "//beacon-chain/core/feed/state:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
@@ -181,6 +183,7 @@ go_test(
         "//time: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_ethereum_go_ethereum//core/types:go_default_library",
         "@com_github_holiman_uint256//:go_default_library",
         "@com_github_pkg_errors//:go_default_library",

beacon-chain/blockchain/chain_info.go

@@ -6,8 +6,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"go.opencensus.io/trace"
-
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	f "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice"
 	doublylinkedtree "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/doubly-linked-tree"
@@ -20,6 +18,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"go.opencensus.io/trace"
 )
 
 // ChainInfoFetcher defines a common interface for methods in blockchain service which
@@ -49,6 +48,8 @@ type ForkchoiceFetcher interface {
 	ForkChoiceDump(context.Context) (*forkchoice.Dump, error)
 	NewSlot(context.Context, primitives.Slot) error
 	ProposerBoost() [32]byte
+	RecentBlockSlot(root [32]byte) (primitives.Slot, error)
+	IsCanonical(ctx context.Context, blockRoot [32]byte) (bool, error)
 }
 
 // TimeFetcher retrieves the Ethereum consensus data that's related to time.

beacon-chain/blockchain/chain_info_forkchoice.go

@@ -99,3 +99,10 @@ func (s *Service) FinalizedBlockHash() [32]byte {
 	defer s.cfg.ForkChoiceStore.RUnlock()
 	return s.cfg.ForkChoiceStore.FinalizedPayloadBlockHash()
 }
+
+// ParentRoot wraps a call to the corresponding method in forkchoice
+func (s *Service) ParentRoot(root [32]byte) ([32]byte, error) {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.ParentRoot(root)
+}

beacon-chain/blockchain/execution_engine.go

@@ -74,8 +74,8 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	}
 	payloadID, lastValidHash, err := s.cfg.ExecutionEngineCaller.ForkchoiceUpdated(ctx, fcs, arg.attributes)
 	if err != nil {
-		switch err {
-		case execution.ErrAcceptedSyncingPayloadStatus:
+		switch {
+		case errors.Is(err, execution.ErrAcceptedSyncingPayloadStatus):
 			forkchoiceUpdatedOptimisticNodeCount.Inc()
 			log.WithFields(logrus.Fields{
 				"headSlot":                  headBlk.Slot(),
@@ -83,7 +83,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 				"finalizedPayloadBlockHash": fmt.Sprintf("%#x", bytesutil.Trunc(finalizedHash[:])),
 			}).Info("Called fork choice updated with optimistic block")
 			return payloadID, nil
-		case execution.ErrInvalidPayloadStatus:
+		case errors.Is(err, execution.ErrInvalidPayloadStatus):
 			forkchoiceUpdatedInvalidNodeCount.Inc()
 			headRoot := arg.headRoot
 			if len(lastValidHash) == 0 {
@@ -139,7 +139,6 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 				"newHeadRoot":          fmt.Sprintf("%#x", bytesutil.Trunc(r[:])),
 			}).Warn("Pruned invalid blocks")
 			return pid, invalidBlock{error: ErrInvalidPayload, root: arg.headRoot, invalidAncestorRoots: invalidRoots}
-
 		default:
 			log.WithError(err).Error(ErrUndefinedExecutionEngineError)
 			return nil, nil
@@ -231,18 +230,18 @@ func (s *Service) notifyNewPayload(ctx context.Context, preStateVersion int,
 	} else {
 		lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, []common.Hash{}, &common.Hash{} /*empty version hashes and root before Deneb*/)
 	}
-	switch err {
-	case nil:
+	switch {
+	case err == nil:
 		newPayloadValidNodeCount.Inc()
 		return true, nil
-	case execution.ErrAcceptedSyncingPayloadStatus:
+	case errors.Is(err, execution.ErrAcceptedSyncingPayloadStatus):
 		newPayloadOptimisticNodeCount.Inc()
 		log.WithFields(logrus.Fields{
 			"slot":             blk.Block().Slot(),
 			"payloadBlockHash": fmt.Sprintf("%#x", bytesutil.Trunc(payload.BlockHash())),
 		}).Info("Called new payload with optimistic block")
 		return false, nil
-	case execution.ErrInvalidPayloadStatus:
+	case errors.Is(err, execution.ErrInvalidPayloadStatus):
 		lvh := bytesutil.ToBytes32(lastValidHash)
 		return false, invalidBlock{
 			error:         ErrInvalidPayload,
@@ -324,7 +323,7 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 
 	var attr payloadattribute.Attributer
 	switch st.Version() {
-	case version.Deneb:
+	case version.Deneb, version.Electra:
 		withdrawals, _, err := st.ExpectedWithdrawals()
 		if err != nil {
 			log.WithError(err).Error("Could not get expected withdrawals to get payload attribute")

beacon-chain/blockchain/execution_engine_test.go

@@ -855,41 +855,63 @@ func Test_GetPayloadAttributeV2(t *testing.T) {
 	require.Equal(t, 0, len(a))
 }
 
-func Test_GetPayloadAttributeDeneb(t *testing.T) {
-	service, tr := minimalTestService(t, WithPayloadIDCache(cache.NewPayloadIDCache()))
-	ctx := tr.ctx
+func Test_GetPayloadAttributeV3(t *testing.T) {
+	var testCases = []struct {
+		name string
+		st   bstate.BeaconState
+	}{
+		{
+			name: "deneb",
+			st: func() bstate.BeaconState {
+				st, _ := util.DeterministicGenesisStateDeneb(t, 1)
+				return st
+			}(),
+		},
+		{
+			name: "electra",
+			st: func() bstate.BeaconState {
+				st, _ := util.DeterministicGenesisStateElectra(t, 1)
+				return st
+			}(),
+		},
+	}
 
-	st, _ := util.DeterministicGenesisStateDeneb(t, 1)
-	attr := service.getPayloadAttribute(ctx, st, 0, []byte{})
-	require.Equal(t, true, attr.IsEmpty())
+	for _, test := range testCases {
+		t.Run(test.name, func(t *testing.T) {
+			service, tr := minimalTestService(t, WithPayloadIDCache(cache.NewPayloadIDCache()))
+			ctx := tr.ctx
 
-	// Cache hit, advance state, no fee recipient
-	slot := primitives.Slot(1)
-	service.cfg.TrackedValidatorsCache.Set(cache.TrackedValidator{Active: true, Index: 0})
-	service.cfg.PayloadIDCache.Set(slot, [32]byte{}, [8]byte{})
-	attr = service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
-	require.Equal(t, false, attr.IsEmpty())
-	require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
-	a, err := attr.Withdrawals()
-	require.NoError(t, err)
-	require.Equal(t, 0, len(a))
+			attr := service.getPayloadAttribute(ctx, test.st, 0, []byte{})
+			require.Equal(t, true, attr.IsEmpty())
 
-	// Cache hit, advance state, has fee recipient
-	suggestedAddr := common.HexToAddress("123")
-	service.cfg.TrackedValidatorsCache.Set(cache.TrackedValidator{Active: true, FeeRecipient: primitives.ExecutionAddress(suggestedAddr), Index: 0})
-	service.cfg.PayloadIDCache.Set(slot, [32]byte{}, [8]byte{})
-	attr = service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
-	require.Equal(t, false, attr.IsEmpty())
-	require.Equal(t, suggestedAddr, common.BytesToAddress(attr.SuggestedFeeRecipient()))
-	a, err = attr.Withdrawals()
-	require.NoError(t, err)
-	require.Equal(t, 0, len(a))
+			// Cache hit, advance state, no fee recipient
+			slot := primitives.Slot(1)
+			service.cfg.TrackedValidatorsCache.Set(cache.TrackedValidator{Active: true, Index: 0})
+			service.cfg.PayloadIDCache.Set(slot, [32]byte{}, [8]byte{})
+			attr = service.getPayloadAttribute(ctx, test.st, slot, params.BeaconConfig().ZeroHash[:])
+			require.Equal(t, false, attr.IsEmpty())
+			require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
+			a, err := attr.Withdrawals()
+			require.NoError(t, err)
+			require.Equal(t, 0, len(a))
 
-	attrV3, err := attr.PbV3()
-	require.NoError(t, err)
-	hr := service.headRoot()
-	require.Equal(t, hr, [32]byte(attrV3.ParentBeaconBlockRoot))
+			// Cache hit, advance state, has fee recipient
+			suggestedAddr := common.HexToAddress("123")
+			service.cfg.TrackedValidatorsCache.Set(cache.TrackedValidator{Active: true, FeeRecipient: primitives.ExecutionAddress(suggestedAddr), Index: 0})
+			service.cfg.PayloadIDCache.Set(slot, [32]byte{}, [8]byte{})
+			attr = service.getPayloadAttribute(ctx, test.st, slot, params.BeaconConfig().ZeroHash[:])
+			require.Equal(t, false, attr.IsEmpty())
+			require.Equal(t, suggestedAddr, common.BytesToAddress(attr.SuggestedFeeRecipient()))
+			a, err = attr.Withdrawals()
+			require.NoError(t, err)
+			require.Equal(t, 0, len(a))
 
+			attrV3, err := attr.PbV3()
+			require.NoError(t, err)
+			hr := service.headRoot()
+			require.Equal(t, hr, [32]byte(attrV3.ParentBeaconBlockRoot))
+		})
+	}
 }
 
 func Test_UpdateLastValidatedCheckpoint(t *testing.T) {

beacon-chain/blockchain/lightclient.go

@@ -16,7 +16,7 @@ import (
 )
 
 const (
-	finalityBranchNumOfLeaves = 6
+	FinalityBranchNumOfLeaves = 6
 )
 
 // CreateLightClientFinalityUpdate - implements https://github.com/ethereum/consensus-specs/blob/3d235740e5f1e641d3b160c8688f26e7dc5a1894/specs/altair/light-client/full-node.md#create_light_client_finality_update
@@ -69,7 +69,7 @@ func NewLightClientOptimisticUpdateFromBeaconState(
 	// assert sum(block.message.body.sync_aggregate.sync_committee_bits) >= MIN_SYNC_COMMITTEE_PARTICIPANTS
 	syncAggregate, err := block.Block().Body().SyncAggregate()
 	if err != nil {
-		return nil, fmt.Errorf("could not get sync aggregate %v", err)
+		return nil, fmt.Errorf("could not get sync aggregate %w", err)
 	}
 
 	if syncAggregate.SyncCommitteeBits.Count() < params.BeaconConfig().MinSyncCommitteeParticipants {
@@ -85,18 +85,18 @@ func NewLightClientOptimisticUpdateFromBeaconState(
 	header := state.LatestBlockHeader()
 	stateRoot, err := state.HashTreeRoot(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("could not get state root %v", err)
+		return nil, fmt.Errorf("could not get state root %w", err)
 	}
 	header.StateRoot = stateRoot[:]
 
 	headerRoot, err := header.HashTreeRoot()
 	if err != nil {
-		return nil, fmt.Errorf("could not get header root %v", err)
+		return nil, fmt.Errorf("could not get header root %w", err)
 	}
 
 	blockRoot, err := block.Block().HashTreeRoot()
 	if err != nil {
-		return nil, fmt.Errorf("could not get block root %v", err)
+		return nil, fmt.Errorf("could not get block root %w", err)
 	}
 
 	if headerRoot != blockRoot {
@@ -114,14 +114,14 @@ func NewLightClientOptimisticUpdateFromBeaconState(
 	// attested_header.state_root = hash_tree_root(attested_state)
 	attestedStateRoot, err := attestedState.HashTreeRoot(ctx)
 	if err != nil {
-		return nil, fmt.Errorf("could not get attested state root %v", err)
+		return nil, fmt.Errorf("could not get attested state root %w", err)
 	}
 	attestedHeader.StateRoot = attestedStateRoot[:]
 
 	// assert hash_tree_root(attested_header) == block.message.parent_root
 	attestedHeaderRoot, err := attestedHeader.HashTreeRoot()
 	if err != nil {
-		return nil, fmt.Errorf("could not get attested header root %v", err)
+		return nil, fmt.Errorf("could not get attested header root %w", err)
 	}
 
 	if attestedHeaderRoot != block.Block().ParentRoot() {
@@ -175,13 +175,13 @@ func NewLightClientFinalityUpdateFromBeaconState(
 		if finalizedBlock.Block().Slot() != 0 {
 			tempFinalizedHeader, err := finalizedBlock.Header()
 			if err != nil {
-				return nil, fmt.Errorf("could not get finalized header %v", err)
+				return nil, fmt.Errorf("could not get finalized header %w", err)
 			}
 			finalizedHeader = migration.V1Alpha1SignedHeaderToV1(tempFinalizedHeader).GetMessage()
 
 			finalizedHeaderRoot, err := finalizedHeader.HashTreeRoot()
 			if err != nil {
-				return nil, fmt.Errorf("could not get finalized header root %v", err)
+				return nil, fmt.Errorf("could not get finalized header root %w", err)
 			}
 
 			if finalizedHeaderRoot != bytesutil.ToBytes32(attestedState.FinalizedCheckpoint().Root) {
@@ -204,7 +204,7 @@ func NewLightClientFinalityUpdateFromBeaconState(
 		var bErr error
 		finalityBranch, bErr = attestedState.FinalizedRootProof(ctx)
 		if bErr != nil {
-			return nil, fmt.Errorf("could not get finalized root proof %v", bErr)
+			return nil, fmt.Errorf("could not get finalized root proof %w", bErr)
 		}
 	} else {
 		finalizedHeader = &ethpbv1.BeaconBlockHeader{
@@ -215,8 +215,8 @@ func NewLightClientFinalityUpdateFromBeaconState(
 			BodyRoot:      make([]byte, 32),
 		}
 
-		finalityBranch = make([][]byte, finalityBranchNumOfLeaves)
-		for i := 0; i < finalityBranchNumOfLeaves; i++ {
+		finalityBranch = make([][]byte, FinalityBranchNumOfLeaves)
+		for i := 0; i < FinalityBranchNumOfLeaves; i++ {
 			finalityBranch[i] = make([]byte, 32)
 		}
 	}

beacon-chain/blockchain/lightclient_test.go

@@ -153,7 +153,7 @@ func TestLightClient_NewLightClientFinalityUpdateFromBeaconState(t *testing.T) {
 	require.DeepSSZEqual(t, zeroHash, update.FinalizedHeader.ParentRoot, "Finalized header parent root is not zero")
 	require.DeepSSZEqual(t, zeroHash, update.FinalizedHeader.StateRoot, "Finalized header state root is not zero")
 	require.DeepSSZEqual(t, zeroHash, update.FinalizedHeader.BodyRoot, "Finalized header body root is not zero")
-	require.Equal(t, finalityBranchNumOfLeaves, len(update.FinalityBranch), "Invalid finality branch leaves")
+	require.Equal(t, FinalityBranchNumOfLeaves, len(update.FinalityBranch), "Invalid finality branch leaves")
 	for _, leaf := range update.FinalityBranch {
 		require.DeepSSZEqual(t, zeroHash, leaf, "Leaf is not zero")
 	}

beacon-chain/blockchain/process_attestation.go

@@ -46,7 +46,7 @@ func (s *Service) OnAttestation(ctx context.Context, a ethpb.Att, disparity time
 	if err := helpers.ValidateSlotTargetEpoch(a.GetData()); err != nil {
 		return err
 	}
-	tgt := ethpb.CopyCheckpoint(a.GetData().Target)
+	tgt := a.GetData().Target.Copy()
 
 	// Note that target root check is ignored here because it was performed in sync's validation pipeline:
 	// validate_aggregate_proof.go and validate_beacon_attestation.go

beacon-chain/blockchain/process_block.go

@@ -6,9 +6,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
-
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed"
 	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
@@ -32,6 +29,8 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1/attestation"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
 )
 
 // A custom slot deadline for processing state slots in our cache.
@@ -143,7 +142,7 @@ func (s *Service) onBlockBatch(ctx context.Context, blks []consensusblocks.ROBlo
 	b := blks[0].Block()
 
 	// Retrieve incoming block's pre state.
-	if err := s.verifyBlkPreState(ctx, b); err != nil {
+	if err := s.verifyBlkPreState(ctx, b.ParentRoot()); err != nil {
 		return err
 	}
 	preState, err := s.cfg.StateGen.StateByRootInitialSync(ctx, b.ParentRoot())

beacon-chain/blockchain/process_block_helpers.go

@@ -7,9 +7,6 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/pkg/errors"
-	"github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
-
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed"
 	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
@@ -17,6 +14,7 @@ import (
 	forkchoicetypes "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/types"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/features"
+	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
@@ -25,6 +23,8 @@ import (
 	ethpbv2 "github.com/prysmaticlabs/prysm/v5/proto/eth/v2"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
 )
 
 // CurrentSlot returns the current slot based on time.
@@ -286,7 +286,7 @@ func (s *Service) getBlockPreState(ctx context.Context, b interfaces.ReadOnlyBea
 	defer span.End()
 
 	// Verify incoming block has a valid pre state.
-	if err := s.verifyBlkPreState(ctx, b); err != nil {
+	if err := s.verifyBlkPreState(ctx, b.ParentRoot()); err != nil {
 		return nil, err
 	}
 
@@ -312,11 +312,10 @@ func (s *Service) getBlockPreState(ctx context.Context, b interfaces.ReadOnlyBea
 }
 
 // verifyBlkPreState validates input block has a valid pre-state.
-func (s *Service) verifyBlkPreState(ctx context.Context, b interfaces.ReadOnlyBeaconBlock) error {
+func (s *Service) verifyBlkPreState(ctx context.Context, parentRoot [field_params.RootLength]byte) error {
 	ctx, span := trace.StartSpan(ctx, "blockChain.verifyBlkPreState")
 	defer span.End()
 
-	parentRoot := b.ParentRoot()
 	// Loosen the check to HasBlock because state summary gets saved in batches
 	// during initial syncing. There's no risk given a state summary object is just a
 	// subset of the block object.

beacon-chain/blockchain/process_block_test.go

@@ -117,7 +117,7 @@ func TestCachedPreState_CanGetFromStateSummary(t *testing.T) {
 
 	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(ctx, &ethpb.StateSummary{Slot: 1, Root: root[:]}))
 	require.NoError(t, service.cfg.StateGen.SaveState(ctx, root, st))
-	require.NoError(t, service.verifyBlkPreState(ctx, wsb.Block()))
+	require.NoError(t, service.verifyBlkPreState(ctx, wsb.Block().ParentRoot()))
 }
 
 func TestFillForkChoiceMissingBlocks_CanSave(t *testing.T) {
@@ -2044,7 +2044,11 @@ func TestOnBlock_HandleBlockAttestations(t *testing.T) {
 
 		st, err = service.HeadState(ctx)
 		require.NoError(t, err)
-		b, err := util.GenerateFullBlockElectra(st, keys, util.DefaultBlockGenConfig(), 1)
+		defaultConfig := util.DefaultBlockGenConfig()
+		defaultConfig.NumWithdrawalRequests = 1
+		defaultConfig.NumDepositRequests = 2
+		defaultConfig.NumConsolidationRequests = 1
+		b, err := util.GenerateFullBlockElectra(st, keys, defaultConfig, 1)
 		require.NoError(t, err)
 		wsb, err := consensusblocks.NewSignedBeaconBlock(b)
 		require.NoError(t, err)
@@ -2059,7 +2063,7 @@ func TestOnBlock_HandleBlockAttestations(t *testing.T) {
 
 		st, err = service.HeadState(ctx)
 		require.NoError(t, err)
-		b, err = util.GenerateFullBlockElectra(st, keys, util.DefaultBlockGenConfig(), 2)
+		b, err = util.GenerateFullBlockElectra(st, keys, defaultConfig, 2)
 		require.NoError(t, err)
 		wsb, err = consensusblocks.NewSignedBeaconBlock(b)
 		require.NoError(t, err)
@@ -2067,7 +2071,7 @@ func TestOnBlock_HandleBlockAttestations(t *testing.T) {
 		// prepare another block that is not inserted
 		st3, err := transition.ExecuteStateTransition(ctx, st, wsb)
 		require.NoError(t, err)
-		b3, err := util.GenerateFullBlockElectra(st3, keys, util.DefaultBlockGenConfig(), 3)
+		b3, err := util.GenerateFullBlockElectra(st3, keys, defaultConfig, 3)
 		require.NoError(t, err)
 		wsb3, err := consensusblocks.NewSignedBeaconBlock(b3)
 		require.NoError(t, err)

beacon-chain/blockchain/receive_attestation.go

@@ -13,6 +13,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -190,13 +191,26 @@ func (s *Service) processAttestations(ctx context.Context, disparity time.Durati
 		}
 
 		if err := s.receiveAttestationNoPubsub(ctx, a, disparity); err != nil {
-			log.WithFields(logrus.Fields{
-				"slot":             a.GetData().Slot,
-				"committeeIndex":   a.GetData().CommitteeIndex,
-				"beaconBlockRoot":  fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().BeaconBlockRoot)),
-				"targetRoot":       fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().Target.Root)),
-				"aggregationCount": a.GetAggregationBits().Count(),
-			}).WithError(err).Warn("Could not process attestation for fork choice")
+			var fields logrus.Fields
+			if a.Version() >= version.Electra {
+				fields = logrus.Fields{
+					"slot":             a.GetData().Slot,
+					"committeeCount":   a.CommitteeBitsVal().Count(),
+					"committeeIndices": a.CommitteeBitsVal().BitIndices(),
+					"beaconBlockRoot":  fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().BeaconBlockRoot)),
+					"targetRoot":       fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().Target.Root)),
+					"aggregatedCount":  a.GetAggregationBits().Count(),
+				}
+			} else {
+				fields = logrus.Fields{
+					"slot":            a.GetData().Slot,
+					"committeeIndex":  a.GetData().CommitteeIndex,
+					"beaconBlockRoot": fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().BeaconBlockRoot)),
+					"targetRoot":      fmt.Sprintf("%#x", bytesutil.Trunc(a.GetData().Target.Root)),
+					"aggregatedCount": a.GetAggregationBits().Count(),
+				}
+			}
+			log.WithFields(fields).WithError(err).Warn("Could not process attestation for fork choice")
 		}
 	}
 }

beacon-chain/blockchain/receive_block.go

@@ -13,6 +13,7 @@ import (
 	coreTime "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/slasher/types"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/features"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
@@ -76,59 +77,20 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	if err != nil {
 		return err
 	}
-	rob, err := blocks.NewROBlockWithRoot(block, blockRoot)
-	if err != nil {
-		return err
-	}
-
 	preState, err := s.getBlockPreState(ctx, blockCopy.Block())
 	if err != nil {
 		return errors.Wrap(err, "could not get block's prestate")
 	}
-	// Save current justified and finalized epochs for future use.
-	currStoreJustifiedEpoch := s.CurrentJustifiedCheckpt().Epoch
-	currStoreFinalizedEpoch := s.FinalizedCheckpt().Epoch
-	currentEpoch := coreTime.CurrentEpoch(preState)
 
-	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
+	currentCheckpoints := s.saveCurrentCheckpoints(preState)
+	postState, isValidPayload, err := s.validateExecutionAndConsensus(ctx, preState, blockCopy, blockRoot)
 	if err != nil {
 		return err
 	}
-	eg, _ := errgroup.WithContext(ctx)
-	var postState state.BeaconState
-	eg.Go(func() error {
-		var err error
-		postState, err = s.validateStateTransition(ctx, preState, blockCopy)
-		if err != nil {
-			return errors.Wrap(err, "failed to validate consensus state transition function")
-		}
-		return nil
-	})
-	var isValidPayload bool
-	eg.Go(func() error {
-		var err error
-		isValidPayload, err = s.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, blockCopy, blockRoot)
-		if err != nil {
-			return errors.Wrap(err, "could not notify the engine of the new payload")
-		}
-		return nil
-	})
-	if err := eg.Wait(); err != nil {
+	daWaitedTime, err := s.handleDA(ctx, blockCopy, blockRoot, avs)
+	if err != nil {
 		return err
 	}
-	daStartTime := time.Now()
-	if avs != nil {
-		if err := avs.IsDataAvailable(ctx, s.CurrentSlot(), rob); err != nil {
-			return errors.Wrap(err, "could not validate blob data availability (AvailabilityStore.IsDataAvailable)")
-		}
-	} else {
-		if err := s.isDataAvailable(ctx, blockRoot, blockCopy); err != nil {
-			return errors.Wrap(err, "could not validate blob data availability")
-		}
-	}
-	daWaitedTime := time.Since(daStartTime)
-	dataAvailWaitedTime.Observe(float64(daWaitedTime.Milliseconds()))
-
 	// Defragment the state before continuing block processing.
 	s.defragmentState(postState)
 
@@ -150,34 +112,9 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 		tracing.AnnotateError(span, err)
 		return err
 	}
-	if coreTime.CurrentEpoch(postState) > currentEpoch && s.cfg.ForkChoiceStore.IsCanonical(blockRoot) {
-		headSt, err := s.HeadState(ctx)
-		if err != nil {
-			return errors.Wrap(err, "could not get head state")
-		}
-		if err := reportEpochMetrics(ctx, postState, headSt); err != nil {
-			log.WithError(err).Error("could not report epoch metrics")
-		}
+	if err := s.updateCheckpoints(ctx, currentCheckpoints, preState, postState, blockRoot); err != nil {
+		return err
 	}
-	if err := s.updateJustificationOnBlock(ctx, preState, postState, currStoreJustifiedEpoch); err != nil {
-		return errors.Wrap(err, "could not update justified checkpoint")
-	}
-
-	newFinalized, err := s.updateFinalizationOnBlock(ctx, preState, postState, currStoreFinalizedEpoch)
-	if err != nil {
-		return errors.Wrap(err, "could not update finalized checkpoint")
-	}
-	// Send finalized events and finalized deposits in the background
-	if newFinalized {
-		finalized := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
-		go s.sendNewFinalizedEvent(ctx, postState)
-		depCtx, cancel := context.WithTimeout(context.Background(), depositDeadline)
-		go func() {
-			s.insertFinalizedDeposits(depCtx, finalized.Root)
-			cancel()
-		}()
-	}
-
 	// If slasher is configured, forward the attestations in the block via an event feed for processing.
 	if features.Get().EnableSlasher {
 		go s.sendBlockAttestationsToSlasher(blockCopy, preState)
@@ -197,31 +134,153 @@ func (s *Service) ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySig
 	if err := s.handleCaches(); err != nil {
 		return err
 	}
+	s.reportPostBlockProcessing(blockCopy, blockRoot, receivedTime, daWaitedTime)
+	return nil
+}
 
+type ffgCheckpoints struct {
+	j, f, c primitives.Epoch
+}
+
+func (s *Service) saveCurrentCheckpoints(state state.BeaconState) (cp ffgCheckpoints) {
+	// Save current justified and finalized epochs for future use.
+	cp.j = s.CurrentJustifiedCheckpt().Epoch
+	cp.f = s.FinalizedCheckpt().Epoch
+	cp.c = coreTime.CurrentEpoch(state)
+	return
+}
+
+func (s *Service) updateCheckpoints(
+	ctx context.Context,
+	cp ffgCheckpoints,
+	preState, postState state.BeaconState,
+	blockRoot [32]byte,
+) error {
+	if coreTime.CurrentEpoch(postState) > cp.c && s.cfg.ForkChoiceStore.IsCanonical(blockRoot) {
+		headSt, err := s.HeadState(ctx)
+		if err != nil {
+			return errors.Wrap(err, "could not get head state")
+		}
+		if err := reportEpochMetrics(ctx, postState, headSt); err != nil {
+			log.WithError(err).Error("could not report epoch metrics")
+		}
+	}
+	if err := s.updateJustificationOnBlock(ctx, preState, postState, cp.j); err != nil {
+		return errors.Wrap(err, "could not update justified checkpoint")
+	}
+
+	newFinalized, err := s.updateFinalizationOnBlock(ctx, preState, postState, cp.f)
+	if err != nil {
+		return errors.Wrap(err, "could not update finalized checkpoint")
+	}
+	// Send finalized events and finalized deposits in the background
+	if newFinalized {
+		// hook to process all post state finalization tasks
+		s.executePostFinalizationTasks(ctx, postState)
+	}
+	return nil
+}
+
+func (s *Service) validateExecutionAndConsensus(
+	ctx context.Context,
+	preState state.BeaconState,
+	block interfaces.SignedBeaconBlock,
+	blockRoot [32]byte,
+) (state.BeaconState, bool, error) {
+	preStateVersion, preStateHeader, err := getStateVersionAndPayload(preState)
+	if err != nil {
+		return nil, false, err
+	}
+	eg, _ := errgroup.WithContext(ctx)
+	var postState state.BeaconState
+	eg.Go(func() error {
+		var err error
+		postState, err = s.validateStateTransition(ctx, preState, block)
+		if err != nil {
+			return errors.Wrap(err, "failed to validate consensus state transition function")
+		}
+		return nil
+	})
+	var isValidPayload bool
+	eg.Go(func() error {
+		var err error
+		isValidPayload, err = s.validateExecutionOnBlock(ctx, preStateVersion, preStateHeader, block, blockRoot)
+		if err != nil {
+			return errors.Wrap(err, "could not notify the engine of the new payload")
+		}
+		return nil
+	})
+	if err := eg.Wait(); err != nil {
+		return nil, false, err
+	}
+	return postState, isValidPayload, nil
+}
+
+func (s *Service) handleDA(
+	ctx context.Context,
+	block interfaces.SignedBeaconBlock,
+	blockRoot [32]byte,
+	avs das.AvailabilityStore,
+) (time.Duration, error) {
+	daStartTime := time.Now()
+	if avs != nil {
+		rob, err := blocks.NewROBlockWithRoot(block, blockRoot)
+		if err != nil {
+			return 0, err
+		}
+		if err := avs.IsDataAvailable(ctx, s.CurrentSlot(), rob); err != nil {
+			return 0, errors.Wrap(err, "could not validate blob data availability (AvailabilityStore.IsDataAvailable)")
+		}
+	} else {
+		if err := s.isDataAvailable(ctx, blockRoot, block); err != nil {
+			return 0, errors.Wrap(err, "could not validate blob data availability")
+		}
+	}
+	daWaitedTime := time.Since(daStartTime)
+	dataAvailWaitedTime.Observe(float64(daWaitedTime.Milliseconds()))
+	return daWaitedTime, nil
+}
+
+func (s *Service) reportPostBlockProcessing(
+	block interfaces.SignedBeaconBlock,
+	blockRoot [32]byte,
+	receivedTime time.Time,
+	daWaitedTime time.Duration,
+) {
 	// Reports on block and fork choice metrics.
 	cp := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
 	finalized := &ethpb.Checkpoint{Epoch: cp.Epoch, Root: bytesutil.SafeCopyBytes(cp.Root[:])}
-	reportSlotMetrics(blockCopy.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(blockCopy.Block(), blockRoot, justified, finalized, receivedTime, uint64(s.genesisTime.Unix()), daWaitedTime); err != nil {
+	if err := logBlockSyncStatus(block.Block(), blockRoot, justified, finalized, receivedTime, uint64(s.genesisTime.Unix()), daWaitedTime); err != nil {
 		log.WithError(err).Error("Unable to log block sync status")
 	}
 	// Log payload data
-	if err := logPayload(blockCopy.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(blockCopy.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()))
+}
 
-	return nil
+func (s *Service) executePostFinalizationTasks(ctx context.Context, finalizedState state.BeaconState) {
+	finalized := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
+	go func() {
+		finalizedState.SaveValidatorIndices() // used to handle Validator index invariant from EIP6110
+		s.sendNewFinalizedEvent(ctx, finalizedState)
+	}()
+	depCtx, cancel := context.WithTimeout(context.Background(), depositDeadline)
+	go func() {
+		s.insertFinalizedDeposits(depCtx, finalized.Root)
+		cancel()
+	}()
 }
 
 // ReceiveBlockBatch processes the whole block batch at once, assuming the block batch is linear ,transitioning
@@ -489,7 +548,7 @@ func (s *Service) sendBlockAttestationsToSlasher(signed interfaces.ReadOnlySigne
 			log.WithError(err).Error("Could not convert to indexed attestation")
 			return
 		}
-		s.cfg.SlasherAttestationsFeed.Send(indexedAtt)
+		s.cfg.SlasherAttestationsFeed.Send(&types.WrappedIndexedAtt{IndexedAtt: indexedAtt})
 	}
 }
 

beacon-chain/blockchain/receive_block_test.go

@@ -6,11 +6,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/ethereum/go-ethereum/common/hexutil"
 	blockchainTesting "github.com/prysmaticlabs/prysm/v5/beacon-chain/blockchain/testing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
 	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/operations/voluntaryexits"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
@@ -20,6 +22,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	logTest "github.com/sirupsen/logrus/hooks/test"
 )
 
@@ -415,3 +418,76 @@ func Test_sendNewFinalizedEvent(t *testing.T) {
 	assert.DeepEqual(t, finalizedStRoot[:], fc.State)
 	assert.Equal(t, false, fc.ExecutionOptimistic)
 }
+
+func Test_executePostFinalizationTasks(t *testing.T) {
+	logHook := logTest.NewGlobal()
+
+	headState, err := util.NewBeaconStateElectra()
+	require.NoError(t, err)
+	finalizedStRoot, err := headState.HashTreeRoot(context.Background())
+	require.NoError(t, err)
+
+	genesis := util.NewBeaconBlock()
+	genesisRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*122 + 1
+	headBlock := util.NewBeaconBlock()
+	headBlock.Block.Slot = finalizedSlot
+	headBlock.Block.StateRoot = finalizedStRoot[:]
+	headBlock.Block.ParentRoot = bytesutil.PadTo(genesisRoot[:], 32)
+	headRoot, err := headBlock.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	hexKey := "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+	key, err := hexutil.Decode(hexKey)
+	require.NoError(t, err)
+	require.NoError(t, headState.SetValidators([]*ethpb.Validator{
+		{
+			PublicKey:             key,
+			WithdrawalCredentials: make([]byte, fieldparams.RootLength),
+		},
+	}))
+	require.NoError(t, headState.SetSlot(finalizedSlot))
+	require.NoError(t, headState.SetFinalizedCheckpoint(&ethpb.Checkpoint{
+		Epoch: 123,
+		Root:  headRoot[:],
+	}))
+	require.NoError(t, headState.SetGenesisValidatorsRoot(params.BeaconConfig().ZeroHash[:]))
+
+	s, tr := minimalTestService(t, WithFinalizedStateAtStartUp(headState))
+	ctx, beaconDB, stateGen := tr.ctx, tr.db, tr.sg
+
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, genesis)
+	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
+	require.NoError(t, beaconDB.SaveState(ctx, headState, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, headBlock)
+	require.NoError(t, beaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
+
+	require.NoError(t, err)
+	require.NoError(t, stateGen.SaveState(ctx, headRoot, headState))
+	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
+
+	notifier := &blockchainTesting.MockStateNotifier{RecordEvents: true}
+	s.cfg.StateNotifier = notifier
+	s.executePostFinalizationTasks(s.ctx, headState)
+
+	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)
+	require.Equal(t, true, ok, "event has wrong data type")
+	assert.Equal(t, primitives.Epoch(123), fc.Epoch)
+	assert.DeepEqual(t, headRoot[:], fc.Block)
+	assert.DeepEqual(t, finalizedStRoot[:], fc.State)
+	assert.Equal(t, false, fc.ExecutionOptimistic)
+
+	// check the cache
+	index, ok := headState.ValidatorIndexByPubkey(bytesutil.ToBytes48(key))
+	require.Equal(t, true, ok)
+	require.Equal(t, primitives.ValidatorIndex(0), index) // first index
+
+	// check deposit
+	require.LogsContain(t, logHook, "Finalized deposit insertion completed at index")
+}

beacon-chain/blockchain/service.go

@@ -11,8 +11,6 @@ import (
 	"time"
 
 	"github.com/pkg/errors"
-	"go.opencensus.io/trace"
-
 	"github.com/prysmaticlabs/prysm/v5/async/event"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/blockchain/kzg"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
@@ -44,6 +42,7 @@ import (
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	prysmTime "github.com/prysmaticlabs/prysm/v5/time"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	"go.opencensus.io/trace"
 )
 
 // Service represents a service that handles the internal
@@ -330,6 +329,8 @@ func (s *Service) StartFromSavedState(saved state.BeaconState) error {
 		return errors.Wrap(err, "failed to initialize blockchain service")
 	}
 
+	saved.SaveValidatorIndices() // used to handle Validator index invariant from EIP6110
+
 	return nil
 }
 
@@ -504,7 +505,7 @@ func (s *Service) saveGenesisData(ctx context.Context, genesisState state.Beacon
 	}
 	genesisBlk, err := s.cfg.BeaconDB.GenesisBlock(ctx)
 	if err != nil || genesisBlk == nil || genesisBlk.IsNil() {
-		return fmt.Errorf("could not load genesis block: %v", err)
+		return fmt.Errorf("could not load genesis block: %w", err)
 	}
 	genesisBlkRoot, err := genesisBlk.Block().HashTreeRoot()
 	if err != nil {

beacon-chain/blockchain/service_test.go

@@ -8,9 +8,10 @@ import (
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache/depositsnapshot"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/db"
@@ -29,6 +30,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/container/trie"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
@@ -203,7 +205,7 @@ func TestChainService_InitializeBeaconChain(t *testing.T) {
 		BlockHash:    make([]byte, 32),
 	})
 	require.NoError(t, err)
-	genState, err = blocks.ProcessPreGenesisDeposits(ctx, genState, deposits)
+	genState, err = altair.ProcessPreGenesisDeposits(ctx, genState, deposits)
 	require.NoError(t, err)
 
 	_, err = bc.initializeBeaconChain(ctx, time.Unix(0, 0), genState, &ethpb.Eth1Data{DepositRoot: hashTreeRoot[:], BlockHash: make([]byte, 32)})
@@ -499,6 +501,65 @@ func TestChainService_EverythingOptimistic(t *testing.T) {
 	require.Equal(t, true, op)
 }
 
+func TestStartFromSavedState_ValidatorIndexCacheUpdated(t *testing.T) {
+	resetFn := features.InitWithReset(&features.Flags{
+		EnableStartOptimistic: true,
+	})
+	defer resetFn()
+
+	genesis := util.NewBeaconBlockElectra()
+	genesisRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err)
+	finalizedSlot := params.BeaconConfig().SlotsPerEpoch*2 + 1
+	headBlock := util.NewBeaconBlockElectra()
+	headBlock.Block.Slot = finalizedSlot
+	headBlock.Block.ParentRoot = bytesutil.PadTo(genesisRoot[:], 32)
+	headState, err := util.NewBeaconState()
+	require.NoError(t, err)
+	hexKey := "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+	key, err := hexutil.Decode(hexKey)
+	require.NoError(t, err)
+	hexKey2 := "0x42247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+	key2, err := hexutil.Decode(hexKey2)
+	require.NoError(t, err)
+	require.NoError(t, headState.SetValidators([]*ethpb.Validator{
+		{
+			PublicKey:             key,
+			WithdrawalCredentials: make([]byte, fieldparams.RootLength),
+		},
+		{
+			PublicKey:             key2,
+			WithdrawalCredentials: make([]byte, fieldparams.RootLength),
+		},
+	}))
+	require.NoError(t, headState.SetSlot(finalizedSlot))
+	require.NoError(t, headState.SetGenesisValidatorsRoot(params.BeaconConfig().ZeroHash[:]))
+	headRoot, err := headBlock.Block.HashTreeRoot()
+	require.NoError(t, err)
+
+	c, tr := minimalTestService(t, WithFinalizedStateAtStartUp(headState))
+	ctx, beaconDB, stateGen := tr.ctx, tr.db, tr.sg
+
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, genesis)
+	require.NoError(t, beaconDB.SaveState(ctx, headState, headRoot))
+	require.NoError(t, beaconDB.SaveState(ctx, headState, genesisRoot))
+	util.SaveBlock(t, ctx, beaconDB, headBlock)
+	require.NoError(t, beaconDB.SaveFinalizedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
+
+	require.NoError(t, err)
+	require.NoError(t, stateGen.SaveState(ctx, headRoot, headState))
+	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, &ethpb.Checkpoint{Epoch: slots.ToEpoch(finalizedSlot), Root: headRoot[:]}))
+	require.NoError(t, c.StartFromSavedState(headState))
+
+	index, ok := headState.ValidatorIndexByPubkey(bytesutil.ToBytes48(key))
+	require.Equal(t, true, ok)
+	require.Equal(t, primitives.ValidatorIndex(0), index) // first index
+	index2, ok := headState.ValidatorIndexByPubkey(bytesutil.ToBytes48(key2))
+	require.Equal(t, true, ok)
+	require.Equal(t, primitives.ValidatorIndex(1), index2) // first index
+}
+
 // MockClockSetter satisfies the ClockSetter interface for testing the conditions where blockchain.Service should
 // call SetGenesis.
 type MockClockSetter struct {

beacon-chain/core/altair/BUILD.bazel

@@ -36,6 +36,7 @@ go_library(
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
+        "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
@@ -78,6 +79,7 @@ go_test(
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/attestation:go_default_library",
+        "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",

beacon-chain/core/altair/deposit.go

@@ -5,11 +5,32 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 )
 
+// ProcessPreGenesisDeposits processes a deposit for the beacon state before chainstart.
+func ProcessPreGenesisDeposits(
+	ctx context.Context,
+	beaconState state.BeaconState,
+	deposits []*ethpb.Deposit,
+) (state.BeaconState, error) {
+	var err error
+	beaconState, err = ProcessDeposits(ctx, beaconState, deposits)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process deposit")
+	}
+	beaconState, err = blocks.ActivateValidatorWithEffectiveBalance(beaconState, deposits)
+	if err != nil {
+		return nil, err
+	}
+	return beaconState, nil
+}
+
 // ProcessDeposits processes validator deposits for beacon state Altair.
 func ProcessDeposits(
 	ctx context.Context,
@@ -33,23 +54,158 @@ func ProcessDeposits(
 	return beaconState, nil
 }
 
-// ProcessDeposit processes validator deposit for beacon state Altair.
+// ProcessDeposit takes in a deposit object and inserts it
+// into the registry as a new validator or balance change.
+// Returns the resulting state, a boolean to indicate whether or not the deposit
+// resulted in a new validator entry into the beacon state, and any error.
+//
+// Spec pseudocode definition:
+// def process_deposit(state: BeaconState, deposit: Deposit) -> None:
+//
+//	# Verify the Merkle branch
+//	assert is_valid_merkle_branch(
+//		leaf=hash_tree_root(deposit.data),
+//		branch=deposit.proof,
+//		depth=DEPOSIT_CONTRACT_TREE_DEPTH + 1,  # Add 1 for the List length mix-in
+//		index=state.eth1_deposit_index,
+//		root=state.eth1_data.deposit_root,
+//	)
+//
+//	 # Deposits must be processed in order
+//	 state.eth1_deposit_index += 1
+//
+//	 apply_deposit(
+//	  state=state,
+//	  pubkey=deposit.data.pubkey,
+//	  withdrawal_credentials=deposit.data.withdrawal_credentials,
+//	  amount=deposit.data.amount,
+//	  signature=deposit.data.signature,
+//	 )
 func ProcessDeposit(beaconState state.BeaconState, deposit *ethpb.Deposit, verifySignature bool) (state.BeaconState, error) {
-	beaconState, isNewValidator, err := blocks.ProcessDeposit(beaconState, deposit, verifySignature)
-	if err != nil {
+	if err := blocks.VerifyDeposit(beaconState, deposit); err != nil {
+		if deposit == nil || deposit.Data == nil {
+			return nil, err
+		}
+		return nil, errors.Wrapf(err, "could not verify deposit from %#x", bytesutil.Trunc(deposit.Data.PublicKey))
+	}
+	if err := beaconState.SetEth1DepositIndex(beaconState.Eth1DepositIndex() + 1); err != nil {
 		return nil, err
 	}
-	if isNewValidator {
-		if err := beaconState.AppendInactivityScore(0); err != nil {
+
+	return ApplyDeposit(beaconState, deposit.Data, verifySignature)
+}
+
+// ApplyDeposit
+// Spec pseudocode definition:
+// def apply_deposit(state: BeaconState, pubkey: BLSPubkey, withdrawal_credentials: Bytes32, amount: uint64, signature: BLSSignature) -> None:
+//
+//	validator_pubkeys = [v.pubkey for v in state.validators]
+//	if pubkey not in validator_pubkeys:
+//	    # Verify the deposit signature (proof of possession) which is not checked by the deposit contract
+//	    deposit_message = DepositMessage(
+//	        pubkey=pubkey,
+//	        withdrawal_credentials=withdrawal_credentials,
+//	        amount=amount,
+//	    )
+//	    domain = compute_domain(DOMAIN_DEPOSIT)  # Fork-agnostic domain since deposits are valid across forks
+//	    signing_root = compute_signing_root(deposit_message, domain)
+//	    if bls.Verify(pubkey, signing_root, signature):
+//	        add_validator_to_registry(state, pubkey, withdrawal_credentials, amount)
+//	else:
+//	    # Increase balance by deposit amount
+//	    index = ValidatorIndex(validator_pubkeys.index(pubkey))
+//	    increase_balance(state, index, amount)
+func ApplyDeposit(beaconState state.BeaconState, data *ethpb.Deposit_Data, verifySignature bool) (state.BeaconState, error) {
+	pubKey := data.PublicKey
+	amount := data.Amount
+	withdrawalCredentials := data.WithdrawalCredentials
+	index, ok := beaconState.ValidatorIndexByPubkey(bytesutil.ToBytes48(pubKey))
+	if !ok {
+		if verifySignature {
+			valid, err := blocks.IsValidDepositSignature(data)
+			if err != nil {
+				return nil, err
+			}
+			if !valid {
+				return beaconState, nil
+			}
+		}
+		if err := AddValidatorToRegistry(beaconState, pubKey, withdrawalCredentials, amount); err != nil {
 			return nil, err
 		}
-		if err := beaconState.AppendPreviousParticipationBits(0); err != nil {
-			return nil, err
-		}
-		if err := beaconState.AppendCurrentParticipationBits(0); err != nil {
+	} else {
+		if err := helpers.IncreaseBalance(beaconState, index, amount); err != nil {
 			return nil, err
 		}
 	}
-
 	return beaconState, nil
 }
+
+// AddValidatorToRegistry updates the beacon state with validator information
+// def add_validator_to_registry(state: BeaconState,
+//
+//	                          pubkey: BLSPubkey,
+//	                          withdrawal_credentials: Bytes32,
+//	                          amount: uint64) -> None:
+//	index = get_index_for_new_validator(state)
+//	validator = get_validator_from_deposit(pubkey, withdrawal_credentials)
+//	set_or_append_list(state.validators, index, validator)
+//	set_or_append_list(state.balances, index, 0)
+//	set_or_append_list(state.previous_epoch_participation, index, ParticipationFlags(0b0000_0000)) // New in Altair
+//	set_or_append_list(state.current_epoch_participation, index, ParticipationFlags(0b0000_0000)) // New in Altair
+//	set_or_append_list(state.inactivity_scores, index, uint64(0)) // New in Altair
+func AddValidatorToRegistry(beaconState state.BeaconState, pubKey []byte, withdrawalCredentials []byte, amount uint64) error {
+	val := GetValidatorFromDeposit(pubKey, withdrawalCredentials, amount)
+	if err := beaconState.AppendValidator(val); err != nil {
+		return err
+	}
+	if err := beaconState.AppendBalance(amount); err != nil {
+		return err
+	}
+
+	// only active in altair and only when it's a new validator (after append balance)
+	if beaconState.Version() >= version.Altair {
+		if err := beaconState.AppendInactivityScore(0); err != nil {
+			return err
+		}
+		if err := beaconState.AppendPreviousParticipationBits(0); err != nil {
+			return err
+		}
+		if err := beaconState.AppendCurrentParticipationBits(0); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// GetValidatorFromDeposit gets a new validator object with provided parameters
+//
+// def get_validator_from_deposit(pubkey: BLSPubkey, withdrawal_credentials: Bytes32, amount: uint64) -> Validator:
+//
+//	effective_balance = min(amount - amount % EFFECTIVE_BALANCE_INCREMENT, MAX_EFFECTIVE_BALANCE)
+//
+//	return Validator(
+//	    pubkey=pubkey,
+//	    withdrawal_credentials=withdrawal_credentials,
+//	    activation_eligibility_epoch=FAR_FUTURE_EPOCH,
+//	    activation_epoch=FAR_FUTURE_EPOCH,
+//	    exit_epoch=FAR_FUTURE_EPOCH,
+//	    withdrawable_epoch=FAR_FUTURE_EPOCH,
+//	    effective_balance=effective_balance,
+//	)
+func GetValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte, amount uint64) *ethpb.Validator {
+	effectiveBalance := amount - (amount % params.BeaconConfig().EffectiveBalanceIncrement)
+	if params.BeaconConfig().MaxEffectiveBalance < effectiveBalance {
+		effectiveBalance = params.BeaconConfig().MaxEffectiveBalance
+	}
+
+	return &ethpb.Validator{
+		PublicKey:                  pubKey,
+		WithdrawalCredentials:      withdrawalCredentials,
+		ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
+		ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
+		ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
+		WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
+		EffectiveBalance:           effectiveBalance,
+	}
+}

beacon-chain/core/altair/deposit_fuzz_test.go

@@ -30,6 +30,59 @@ func TestFuzzProcessDeposits_10000(t *testing.T) {
 	}
 }
 
+func TestFuzzProcessPreGenesisDeposit_10000(t *testing.T) {
+	fuzzer := fuzz.NewWithSeed(0)
+	state := &ethpb.BeaconStateAltair{}
+	deposit := &ethpb.Deposit{}
+	ctx := context.Background()
+
+	for i := 0; i < 10000; i++ {
+		fuzzer.Fuzz(state)
+		fuzzer.Fuzz(deposit)
+		s, err := state_native.InitializeFromProtoUnsafeAltair(state)
+		require.NoError(t, err)
+		r, err := altair.ProcessPreGenesisDeposits(ctx, s, []*ethpb.Deposit{deposit})
+		if err != nil && r != nil {
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
+		}
+	}
+}
+
+func TestFuzzProcessPreGenesisDeposit_Phase0_10000(t *testing.T) {
+	fuzzer := fuzz.NewWithSeed(0)
+	state := &ethpb.BeaconState{}
+	deposit := &ethpb.Deposit{}
+	ctx := context.Background()
+
+	for i := 0; i < 10000; i++ {
+		fuzzer.Fuzz(state)
+		fuzzer.Fuzz(deposit)
+		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
+		require.NoError(t, err)
+		r, err := altair.ProcessPreGenesisDeposits(ctx, s, []*ethpb.Deposit{deposit})
+		if err != nil && r != nil {
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
+		}
+	}
+}
+
+func TestFuzzProcessDeposit_Phase0_10000(t *testing.T) {
+	fuzzer := fuzz.NewWithSeed(0)
+	state := &ethpb.BeaconState{}
+	deposit := &ethpb.Deposit{}
+
+	for i := 0; i < 10000; i++ {
+		fuzzer.Fuzz(state)
+		fuzzer.Fuzz(deposit)
+		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
+		require.NoError(t, err)
+		r, err := altair.ProcessDeposit(s, deposit, true)
+		if err != nil && r != nil {
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
+		}
+	}
+}
+
 func TestFuzzProcessDeposit_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethpb.BeaconStateAltair{}

beacon-chain/core/altair/deposit_test.go

@@ -7,11 +7,14 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/container/trie"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
@@ -44,36 +47,6 @@ func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
 	require.Equal(t, 2, len(newState.Validators()), "Incorrect validator count")
 }
 
-func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
-	deposit := &ethpb.Deposit{
-		Data: &ethpb.Deposit_Data{
-			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, 48),
-			WithdrawalCredentials: make([]byte, 32),
-			Signature:             make([]byte, 96),
-		},
-	}
-	leaf, err := deposit.Data.HashTreeRoot()
-	require.NoError(t, err)
-
-	// We then create a merkle branch for the test.
-	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
-	require.NoError(t, err, "Could not generate trie")
-	proof, err := depositTrie.MerkleProof(0)
-	require.NoError(t, err, "Could not generate proof")
-
-	deposit.Proof = proof
-	beaconState, err := state_native.InitializeFromProtoAltair(&ethpb.BeaconStateAltair{
-		Eth1Data: &ethpb.Eth1Data{
-			DepositRoot: []byte{0},
-			BlockHash:   []byte{1},
-		},
-	})
-	require.NoError(t, err)
-	want := "deposit root did not verify"
-	_, err = altair.ProcessDeposits(context.Background(), beaconState, []*ethpb.Deposit{deposit})
-	require.ErrorContains(t, want, err)
-}
-
 func TestProcessDeposits_AddsNewValidatorDeposit(t *testing.T) {
 	dep, _, err := util.DeterministicDepositsAndKeys(1)
 	require.NoError(t, err)
@@ -245,3 +218,158 @@ func TestProcessDeposit_SkipsInvalidDeposit(t *testing.T) {
 		t.Errorf("Expected validator balance at index 0 to stay 0, received: %v", newState.Balances()[0])
 	}
 }
+
+func TestPreGenesisDeposits_SkipInvalidDeposit(t *testing.T) {
+
+	dep, _, err := util.DeterministicDepositsAndKeys(100)
+	require.NoError(t, err)
+	dep[0].Data.Signature = make([]byte, 96)
+	dt, _, err := util.DepositTrieFromDeposits(dep)
+	require.NoError(t, err)
+
+	for i := range dep {
+		proof, err := dt.MerkleProof(i)
+		require.NoError(t, err)
+		dep[i].Proof = proof
+	}
+	root, err := dt.HashTreeRoot()
+	require.NoError(t, err)
+
+	eth1Data := &ethpb.Eth1Data{
+		DepositRoot:  root[:],
+		DepositCount: 1,
+	}
+	registry := []*ethpb.Validator{
+		{
+			PublicKey:             []byte{1},
+			WithdrawalCredentials: []byte{1, 2, 3},
+		},
+	}
+	balances := []uint64{0}
+	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
+		Validators: registry,
+		Balances:   balances,
+		Eth1Data:   eth1Data,
+		Fork: &ethpb.Fork{
+			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
+			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
+		},
+	})
+	require.NoError(t, err)
+	newState, err := altair.ProcessPreGenesisDeposits(context.Background(), beaconState, dep)
+	require.NoError(t, err, "Expected invalid block deposit to be ignored without error")
+
+	_, ok := newState.ValidatorIndexByPubkey(bytesutil.ToBytes48(dep[0].Data.PublicKey))
+	require.Equal(t, false, ok, "bad pubkey should not exist in state")
+
+	for i := 1; i < newState.NumValidators(); i++ {
+		val, err := newState.ValidatorAtIndex(primitives.ValidatorIndex(i))
+		require.NoError(t, err)
+		require.Equal(t, params.BeaconConfig().MaxEffectiveBalance, val.EffectiveBalance, "unequal effective balance")
+		require.Equal(t, primitives.Epoch(0), val.ActivationEpoch)
+		require.Equal(t, primitives.Epoch(0), val.ActivationEligibilityEpoch)
+	}
+	if newState.Eth1DepositIndex() != 100 {
+		t.Errorf(
+			"Expected Eth1DepositIndex to be increased by 99 after processing an invalid deposit, received change: %v",
+			newState.Eth1DepositIndex(),
+		)
+	}
+	if len(newState.Validators()) != 100 {
+		t.Errorf("Expected validator list to have length 100, received: %v", len(newState.Validators()))
+	}
+	if len(newState.Balances()) != 100 {
+		t.Errorf("Expected validator balances list to have length 100, received: %v", len(newState.Balances()))
+	}
+	if newState.Balances()[0] != 0 {
+		t.Errorf("Expected validator balance at index 0 to stay 0, received: %v", newState.Balances()[0])
+	}
+}
+
+func TestProcessDeposit_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T) {
+	sk, err := bls.RandKey()
+	require.NoError(t, err)
+	deposit := &ethpb.Deposit{
+		Data: &ethpb.Deposit_Data{
+			PublicKey:             sk.PublicKey().Marshal(),
+			Amount:                1000,
+			WithdrawalCredentials: make([]byte, 32),
+			Signature:             make([]byte, 96),
+		},
+	}
+	sr, err := signing.ComputeSigningRoot(deposit.Data, bytesutil.ToBytes(3, 32))
+	require.NoError(t, err)
+	sig := sk.Sign(sr[:])
+	deposit.Data.Signature = sig.Marshal()
+	leaf, err := deposit.Data.HashTreeRoot()
+	require.NoError(t, err)
+
+	// We then create a merkle branch for the test.
+	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
+	require.NoError(t, err, "Could not generate trie")
+	proof, err := depositTrie.MerkleProof(0)
+	require.NoError(t, err, "Could not generate proof")
+
+	deposit.Proof = proof
+	registry := []*ethpb.Validator{
+		{
+			PublicKey: []byte{1, 2, 3},
+		},
+		{
+			PublicKey:             sk.PublicKey().Marshal(),
+			WithdrawalCredentials: []byte{1},
+		},
+	}
+	balances := []uint64{0, 50}
+	root, err := depositTrie.HashTreeRoot()
+	require.NoError(t, err)
+
+	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
+		Validators: registry,
+		Balances:   balances,
+		Eth1Data: &ethpb.Eth1Data{
+			DepositRoot: root[:],
+			BlockHash:   root[:],
+		},
+	})
+	require.NoError(t, err)
+	newState, err := altair.ProcessDeposit(beaconState, deposit, true /*verifySignature*/)
+	require.NoError(t, err, "Process deposit failed")
+	require.Equal(t, uint64(1000+50), newState.Balances()[1], "Expected balance at index 1 to be 1050")
+}
+
+func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
+	deposit := &ethpb.Deposit{
+		Data: &ethpb.Deposit_Data{
+			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, fieldparams.BLSPubkeyLength),
+			WithdrawalCredentials: make([]byte, 32),
+			Signature:             make([]byte, fieldparams.BLSSignatureLength),
+		},
+	}
+	leaf, err := deposit.Data.HashTreeRoot()
+	require.NoError(t, err)
+
+	// We then create a merkle branch for the test.
+	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
+	require.NoError(t, err, "Could not generate trie")
+	proof, err := depositTrie.MerkleProof(0)
+	require.NoError(t, err, "Could not generate proof")
+
+	deposit.Proof = proof
+	b := util.NewBeaconBlock()
+	b.Block = &ethpb.BeaconBlock{
+		Body: &ethpb.BeaconBlockBody{
+			Deposits: []*ethpb.Deposit{deposit},
+		},
+	}
+	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
+		Eth1Data: &ethpb.Eth1Data{
+			DepositRoot: []byte{0},
+			BlockHash:   []byte{1},
+		},
+	})
+	require.NoError(t, err)
+	want := "deposit root did not verify"
+	_, err = altair.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
+	assert.ErrorContains(t, want, err)
+}

beacon-chain/core/altair/sync_committee.go

@@ -18,6 +18,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/math"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
@@ -101,7 +102,8 @@ func NextSyncCommittee(ctx context.Context, s state.BeaconState) (*ethpb.SyncCom
 //	    candidate_index = active_validator_indices[shuffled_index]
 //	    random_byte = hash(seed + uint_to_bytes(uint64(i // 32)))[i % 32]
 //	    effective_balance = state.validators[candidate_index].effective_balance
-//	    if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE * random_byte:
+//	    # [Modified in Electra:EIP7251]
+//	    if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_byte:
 //	        sync_committee_indices.append(candidate_index)
 //	    i += 1
 //	return sync_committee_indices
@@ -121,6 +123,11 @@ func NextSyncCommitteeIndices(ctx context.Context, s state.BeaconState) ([]primi
 	cIndices := make([]primitives.ValidatorIndex, 0, syncCommitteeSize)
 	hashFunc := hash.CustomSHA256Hasher()
 
+	maxEB := cfg.MaxEffectiveBalanceElectra
+	if s.Version() < version.Electra {
+		maxEB = cfg.MaxEffectiveBalance
+	}
+
 	for i := primitives.ValidatorIndex(0); uint64(len(cIndices)) < params.BeaconConfig().SyncCommitteeSize; i++ {
 		if ctx.Err() != nil {
 			return nil, ctx.Err()
@@ -140,7 +147,7 @@ func NextSyncCommitteeIndices(ctx context.Context, s state.BeaconState) ([]primi
 		}
 
 		effectiveBal := v.EffectiveBalance()
-		if effectiveBal*maxRandomByte >= cfg.MaxEffectiveBalance*uint64(randomByte) {
+		if effectiveBal*maxRandomByte >= maxEB*uint64(randomByte) {
 			cIndices = append(cIndices, cIndex)
 		}
 	}

beacon-chain/core/altair/sync_committee_test.go

@@ -13,13 +13,14 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	prysmTime "github.com/prysmaticlabs/prysm/v5/time"
 )
 
 func TestSyncCommitteeIndices_CanGet(t *testing.T) {
-	getState := func(t *testing.T, count uint64) state.BeaconState {
+	getState := func(t *testing.T, count uint64, vers int) state.BeaconState {
 		validators := make([]*ethpb.Validator, count)
 		for i := 0; i < len(validators); i++ {
 			validators[i] = &ethpb.Validator{
@@ -27,17 +28,28 @@ func TestSyncCommitteeIndices_CanGet(t *testing.T) {
 				EffectiveBalance: params.BeaconConfig().MinDepositAmount,
 			}
 		}
-		st, err := state_native.InitializeFromProtoAltair(&ethpb.BeaconStateAltair{
-			RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-		})
+		var st state.BeaconState
+		var err error
+		switch vers {
+		case version.Altair:
+			st, err = state_native.InitializeFromProtoAltair(&ethpb.BeaconStateAltair{
+				RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
+			})
+		case version.Electra:
+			st, err = state_native.InitializeFromProtoElectra(&ethpb.BeaconStateElectra{
+				RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
+			})
+		default:
+			t.Fatal("Unknown version")
+		}
 		require.NoError(t, err)
 		require.NoError(t, st.SetValidators(validators))
 		return st
 	}
 
 	type args struct {
-		state state.BeaconState
-		epoch primitives.Epoch
+		validatorCount uint64
+		epoch          primitives.Epoch
 	}
 	tests := []struct {
 		name      string
@@ -48,32 +60,32 @@ func TestSyncCommitteeIndices_CanGet(t *testing.T) {
 		{
 			name: "genesis validator count, epoch 0",
 			args: args{
-				state: getState(t, params.BeaconConfig().MinGenesisActiveValidatorCount),
-				epoch: 0,
+				validatorCount: params.BeaconConfig().MinGenesisActiveValidatorCount,
+				epoch:          0,
 			},
 			wantErr: false,
 		},
 		{
 			name: "genesis validator count, epoch 100",
 			args: args{
-				state: getState(t, params.BeaconConfig().MinGenesisActiveValidatorCount),
-				epoch: 100,
+				validatorCount: params.BeaconConfig().MinGenesisActiveValidatorCount,
+				epoch:          100,
 			},
 			wantErr: false,
 		},
 		{
 			name: "less than optimal validator count, epoch 100",
 			args: args{
-				state: getState(t, params.BeaconConfig().MaxValidatorsPerCommittee),
-				epoch: 100,
+				validatorCount: params.BeaconConfig().MaxValidatorsPerCommittee,
+				epoch:          100,
 			},
 			wantErr: false,
 		},
 		{
 			name: "no active validators, epoch 100",
 			args: args{
-				state: getState(t, 0), // Regression test for divide by zero. Issue #13051.
-				epoch: 100,
+				validatorCount: 0, // Regression test for divide by zero. Issue #13051.
+				epoch:          100,
 			},
 			wantErr:   true,
 			errString: "no active validator indices",
@@ -81,13 +93,18 @@ func TestSyncCommitteeIndices_CanGet(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			helpers.ClearCache()
-			got, err := altair.NextSyncCommitteeIndices(context.Background(), tt.args.state)
-			if tt.wantErr {
-				require.ErrorContains(t, tt.errString, err)
-			} else {
-				require.NoError(t, err)
-				require.Equal(t, int(params.BeaconConfig().SyncCommitteeSize), len(got))
+			for _, v := range []int{version.Altair, version.Electra} {
+				t.Run(version.String(v), func(t *testing.T) {
+					helpers.ClearCache()
+					st := getState(t, tt.args.validatorCount, v)
+					got, err := altair.NextSyncCommitteeIndices(context.Background(), st)
+					if tt.wantErr {
+						require.ErrorContains(t, tt.errString, err)
+					} else {
+						require.NoError(t, err)
+						require.Equal(t, int(params.BeaconConfig().SyncCommitteeSize), len(got))
+					}
+				})
 			}
 		})
 	}

beacon-chain/core/blocks/attestation.go

@@ -110,25 +110,7 @@ func VerifyAttestationNoVerifySignature(
 
 	var indexedAtt ethpb.IndexedAtt
 
-	if att.Version() < version.Electra {
-		if uint64(att.GetData().CommitteeIndex) >= c {
-			return fmt.Errorf("committee index %d >= committee count %d", att.GetData().CommitteeIndex, c)
-		}
-
-		if err = helpers.VerifyAttestationBitfieldLengths(ctx, beaconState, att); err != nil {
-			return errors.Wrap(err, "could not verify attestation bitfields")
-		}
-
-		// Verify attesting indices are correct.
-		committee, err := helpers.BeaconCommitteeFromState(ctx, beaconState, att.GetData().Slot, att.GetData().CommitteeIndex)
-		if err != nil {
-			return err
-		}
-		indexedAtt, err = attestation.ConvertToIndexed(ctx, att, committee)
-		if err != nil {
-			return err
-		}
-	} else {
+	if att.Version() >= version.Electra {
 		if att.GetData().CommitteeIndex != 0 {
 			return errors.New("committee index must be 0 post-Electra")
 		}
@@ -154,6 +136,29 @@ func VerifyAttestationNoVerifySignature(
 		if err != nil {
 			return err
 		}
+	} else {
+		if uint64(att.GetData().CommitteeIndex) >= c {
+			return fmt.Errorf("committee index %d >= committee count %d", att.GetData().CommitteeIndex, c)
+		}
+
+		// Verify attesting indices are correct.
+		committee, err := helpers.BeaconCommitteeFromState(ctx, beaconState, att.GetData().Slot, att.GetData().CommitteeIndex)
+		if err != nil {
+			return err
+		}
+
+		if committee == nil {
+			return errors.New("no committee exist for this attestation")
+		}
+
+		if err := helpers.VerifyBitfieldLength(att.GetAggregationBits(), uint64(len(committee))); err != nil {
+			return errors.Wrap(err, "failed to verify aggregation bitfield")
+		}
+
+		indexedAtt, err = attestation.ConvertToIndexed(ctx, att, committee)
+		if err != nil {
+			return err
+		}
 	}
 
 	return attestation.IsValidAttestationIndices(ctx, indexedAtt)

beacon-chain/core/blocks/block_operations_fuzz_test.go

@@ -297,60 +297,6 @@ func TestFuzzVerifyIndexedAttestationn_10000(t *testing.T) {
 	}
 }
 
-func TestFuzzProcessDeposits_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
-	state := &ethpb.BeaconState{}
-	deposits := make([]*ethpb.Deposit, 100)
-	ctx := context.Background()
-	for i := 0; i < 10000; i++ {
-		fuzzer.Fuzz(state)
-		for i := range deposits {
-			fuzzer.Fuzz(deposits[i])
-		}
-		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
-		require.NoError(t, err)
-		r, err := ProcessDeposits(ctx, s, deposits)
-		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposits)
-		}
-	}
-}
-
-func TestFuzzProcessPreGenesisDeposit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
-	state := &ethpb.BeaconState{}
-	deposit := &ethpb.Deposit{}
-	ctx := context.Background()
-
-	for i := 0; i < 10000; i++ {
-		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(deposit)
-		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
-		require.NoError(t, err)
-		r, err := ProcessPreGenesisDeposits(ctx, s, []*ethpb.Deposit{deposit})
-		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
-		}
-	}
-}
-
-func TestFuzzProcessDeposit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
-	state := &ethpb.BeaconState{}
-	deposit := &ethpb.Deposit{}
-
-	for i := 0; i < 10000; i++ {
-		fuzzer.Fuzz(state)
-		fuzzer.Fuzz(deposit)
-		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
-		require.NoError(t, err)
-		r, _, err := ProcessDeposit(s, deposit, true)
-		if err != nil && r != nil {
-			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
-		}
-	}
-}
-
 func TestFuzzverifyDeposit_10000(t *testing.T) {
 	fuzzer := fuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
@@ -360,7 +306,7 @@ func TestFuzzverifyDeposit_10000(t *testing.T) {
 		fuzzer.Fuzz(deposit)
 		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
 		require.NoError(t, err)
-		err = verifyDeposit(s, deposit)
+		err = VerifyDeposit(s, deposit)
 		_ = err
 	}
 }

beacon-chain/core/blocks/deposit.go

@@ -5,7 +5,6 @@ import (
 	"fmt"
 
 	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
@@ -17,24 +16,6 @@ import (
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )
 
-// ProcessPreGenesisDeposits processes a deposit for the beacon state before chainstart.
-func ProcessPreGenesisDeposits(
-	ctx context.Context,
-	beaconState state.BeaconState,
-	deposits []*ethpb.Deposit,
-) (state.BeaconState, error) {
-	var err error
-	beaconState, err = ProcessDeposits(ctx, beaconState, deposits)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not process deposit")
-	}
-	beaconState, err = ActivateValidatorWithEffectiveBalance(beaconState, deposits)
-	if err != nil {
-		return nil, err
-	}
-	return beaconState, nil
-}
-
 // ActivateValidatorWithEffectiveBalance updates validator's effective balance, and if it's above MaxEffectiveBalance, validator becomes active in genesis.
 func ActivateValidatorWithEffectiveBalance(beaconState state.BeaconState, deposits []*ethpb.Deposit) (state.BeaconState, error) {
 	for _, d := range deposits {
@@ -66,38 +47,6 @@ func ActivateValidatorWithEffectiveBalance(beaconState state.BeaconState, deposi
 	return beaconState, nil
 }
 
-// ProcessDeposits is one of the operations performed on each processed
-// beacon block to verify queued validators from the Ethereum 1.0 Deposit Contract
-// into the beacon chain.
-//
-// Spec pseudocode definition:
-//
-//	For each deposit in block.body.deposits:
-//	  process_deposit(state, deposit)
-func ProcessDeposits(
-	ctx context.Context,
-	beaconState state.BeaconState,
-	deposits []*ethpb.Deposit,
-) (state.BeaconState, error) {
-	// Attempt to verify all deposit signatures at once, if this fails then fall back to processing
-	// individual deposits with signature verification enabled.
-	batchVerified, err := BatchVerifyDepositsSignatures(ctx, deposits)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, d := range deposits {
-		if d == nil || d.Data == nil {
-			return nil, errors.New("got a nil deposit in block")
-		}
-		beaconState, _, err = ProcessDeposit(beaconState, d, batchVerified)
-		if err != nil {
-			return nil, errors.Wrapf(err, "could not process deposit from %#x", bytesutil.Trunc(d.Data.PublicKey))
-		}
-	}
-	return beaconState, nil
-}
-
 // BatchVerifyDepositsSignatures batch verifies deposit signatures.
 func BatchVerifyDepositsSignatures(ctx context.Context, deposits []*ethpb.Deposit) (bool, error) {
 	var err error
@@ -114,102 +63,28 @@ func BatchVerifyDepositsSignatures(ctx context.Context, deposits []*ethpb.Deposi
 	return verified, nil
 }
 
-// ProcessDeposit takes in a deposit object and inserts it
-// into the registry as a new validator or balance change.
-// Returns the resulting state, a boolean to indicate whether or not the deposit
-// resulted in a new validator entry into the beacon state, and any error.
+// IsValidDepositSignature returns whether deposit_data is valid
+// def is_valid_deposit_signature(pubkey: BLSPubkey, withdrawal_credentials: Bytes32, amount: uint64, signature: BLSSignature) -> bool:
 //
-// Spec pseudocode definition:
-// def process_deposit(state: BeaconState, deposit: Deposit) -> None:
-//
-//	# Verify the Merkle branch
-//	assert is_valid_merkle_branch(
-//	    leaf=hash_tree_root(deposit.data),
-//	    branch=deposit.proof,
-//	    depth=DEPOSIT_CONTRACT_TREE_DEPTH + 1,  # Add 1 for the List length mix-in
-//	    index=state.eth1_deposit_index,
-//	    root=state.eth1_data.deposit_root,
-//	)
-//
-//	# Deposits must be processed in order
-//	state.eth1_deposit_index += 1
-//
-//	pubkey = deposit.data.pubkey
-//	amount = deposit.data.amount
-//	validator_pubkeys = [v.pubkey for v in state.validators]
-//	if pubkey not in validator_pubkeys:
-//	    # Verify the deposit signature (proof of possession) which is not checked by the deposit contract
-//	    deposit_message = DepositMessage(
-//	        pubkey=deposit.data.pubkey,
-//	        withdrawal_credentials=deposit.data.withdrawal_credentials,
-//	        amount=deposit.data.amount,
-//	    )
-//	    domain = compute_domain(DOMAIN_DEPOSIT)  # Fork-agnostic domain since deposits are valid across forks
-//	    signing_root = compute_signing_root(deposit_message, domain)
-//	    if not bls.Verify(pubkey, signing_root, deposit.data.signature):
-//	        return
-//
-//	    # Add validator and balance entries
-//	    state.validators.append(get_validator_from_deposit(state, deposit))
-//	    state.balances.append(amount)
-//	else:
-//	    # Increase balance by deposit amount
-//	    index = ValidatorIndex(validator_pubkeys.index(pubkey))
-//	    increase_balance(state, index, amount)
-func ProcessDeposit(beaconState state.BeaconState, deposit *ethpb.Deposit, verifySignature bool) (state.BeaconState, bool, error) {
-	var newValidator bool
-	if err := verifyDeposit(beaconState, deposit); err != nil {
-		if deposit == nil || deposit.Data == nil {
-			return nil, newValidator, err
-		}
-		return nil, newValidator, errors.Wrapf(err, "could not verify deposit from %#x", bytesutil.Trunc(deposit.Data.PublicKey))
+//	deposit_message = DepositMessage( pubkey=pubkey, withdrawal_credentials=withdrawal_credentials, amount=amount, )
+//	domain = compute_domain(DOMAIN_DEPOSIT)  # Fork-agnostic domain since deposits are valid across forks
+//	signing_root = compute_signing_root(deposit_message, domain)
+//	return bls.Verify(pubkey, signing_root, signature)
+func IsValidDepositSignature(data *ethpb.Deposit_Data) (bool, error) {
+	domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
+	if err != nil {
+		return false, err
 	}
-	if err := beaconState.SetEth1DepositIndex(beaconState.Eth1DepositIndex() + 1); err != nil {
-		return nil, newValidator, err
+	if err := verifyDepositDataSigningRoot(data, domain); err != nil {
+		// Ignore this error as in the spec pseudo code.
+		log.WithError(err).Debug("Skipping deposit: could not verify deposit data signature")
+		return false, nil
 	}
-	pubKey := deposit.Data.PublicKey
-	amount := deposit.Data.Amount
-	index, ok := beaconState.ValidatorIndexByPubkey(bytesutil.ToBytes48(pubKey))
-	if !ok {
-		if verifySignature {
-			domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
-			if err != nil {
-				return nil, newValidator, err
-			}
-			if err := verifyDepositDataSigningRoot(deposit.Data, domain); err != nil {
-				// Ignore this error as in the spec pseudo code.
-				log.WithError(err).Debug("Skipping deposit: could not verify deposit data signature")
-				return beaconState, newValidator, nil
-			}
-		}
-
-		effectiveBalance := amount - (amount % params.BeaconConfig().EffectiveBalanceIncrement)
-		if params.BeaconConfig().MaxEffectiveBalance < effectiveBalance {
-			effectiveBalance = params.BeaconConfig().MaxEffectiveBalance
-		}
-		if err := beaconState.AppendValidator(&ethpb.Validator{
-			PublicKey:                  pubKey,
-			WithdrawalCredentials:      deposit.Data.WithdrawalCredentials,
-			ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
-			ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
-			ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
-			WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
-			EffectiveBalance:           effectiveBalance,
-		}); err != nil {
-			return nil, newValidator, err
-		}
-		newValidator = true
-		if err := beaconState.AppendBalance(amount); err != nil {
-			return nil, newValidator, err
-		}
-	} else if err := helpers.IncreaseBalance(beaconState, index, amount); err != nil {
-		return nil, newValidator, err
-	}
-
-	return beaconState, newValidator, nil
+	return true, nil
 }
 
-func verifyDeposit(beaconState state.ReadOnlyBeaconState, deposit *ethpb.Deposit) error {
+// VerifyDeposit verifies the deposit data and signature given the beacon state and deposit information
+func VerifyDeposit(beaconState state.ReadOnlyBeaconState, deposit *ethpb.Deposit) error {
 	// Verify Merkle proof of deposit and deposit trie root.
 	if deposit == nil || deposit.Data == nil {
 		return errors.New("received nil deposit or nil deposit data")

beacon-chain/core/blocks/deposit_test.go

@@ -9,59 +9,42 @@ import (
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
-	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/container/trie"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
 
-func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
-	// Same validator created 3 valid deposits within the same block
-
-	dep, _, err := util.DeterministicDepositsAndKeysSameValidator(3)
-	require.NoError(t, err)
-	eth1Data, err := util.DeterministicEth1Data(len(dep))
-	require.NoError(t, err)
-	b := util.NewBeaconBlock()
-	b.Block = &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			// 3 deposits from the same validator
-			Deposits: []*ethpb.Deposit{dep[0], dep[1], dep[2]},
-		},
-	}
-	registry := []*ethpb.Validator{
-		{
-			PublicKey:             []byte{1},
-			WithdrawalCredentials: []byte{1, 2, 3},
-		},
-	}
-	balances := []uint64{0}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data:   eth1Data,
-		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-		},
-	})
-	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
-	require.NoError(t, err, "Expected block deposits to process correctly")
-
-	assert.Equal(t, 2, len(newState.Validators()), "Incorrect validator count")
-}
-
-func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
+func TestBatchVerifyDepositsSignatures_Ok(t *testing.T) {
 	deposit := &ethpb.Deposit{
 		Data: &ethpb.Deposit_Data{
-			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, fieldparams.BLSPubkeyLength),
+			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, 48),
 			WithdrawalCredentials: make([]byte, 32),
-			Signature:             make([]byte, fieldparams.BLSSignatureLength),
+			Signature:             make([]byte, 96),
+		},
+	}
+	leaf, err := deposit.Data.HashTreeRoot()
+	require.NoError(t, err)
+	// We then create a merkle branch for the test.
+	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
+	require.NoError(t, err, "Could not generate trie")
+	proof, err := depositTrie.MerkleProof(0)
+	require.NoError(t, err, "Could not generate proof")
+
+	deposit.Proof = proof
+	require.NoError(t, err)
+	ok, err := blocks.BatchVerifyDepositsSignatures(context.Background(), []*ethpb.Deposit{deposit})
+	require.NoError(t, err)
+	require.Equal(t, true, ok)
+}
+
+func TestVerifyDeposit_MerkleBranchFailsVerification(t *testing.T) {
+	deposit := &ethpb.Deposit{
+		Data: &ethpb.Deposit_Data{
+			PublicKey:             bytesutil.PadTo([]byte{1, 2, 3}, 48),
+			WithdrawalCredentials: make([]byte, 32),
+			Signature:             make([]byte, 96),
 		},
 	}
 	leaf, err := deposit.Data.HashTreeRoot()
@@ -74,13 +57,7 @@ func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	require.NoError(t, err, "Could not generate proof")
 
 	deposit.Proof = proof
-	b := util.NewBeaconBlock()
-	b.Block = &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			Deposits: []*ethpb.Deposit{deposit},
-		},
-	}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
+	beaconState, err := state_native.InitializeFromProtoAltair(&ethpb.BeaconStateAltair{
 		Eth1Data: &ethpb.Eth1Data{
 			DepositRoot: []byte{0},
 			BlockHash:   []byte{1},
@@ -88,312 +65,31 @@ func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	})
 	require.NoError(t, err)
 	want := "deposit root did not verify"
-	_, err = blocks.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
-	assert.ErrorContains(t, want, err)
+	err = blocks.VerifyDeposit(beaconState, deposit)
+	require.ErrorContains(t, want, err)
 }
 
-func TestProcessDeposits_AddsNewValidatorDeposit(t *testing.T) {
-	dep, _, err := util.DeterministicDepositsAndKeys(1)
-	require.NoError(t, err)
-	eth1Data, err := util.DeterministicEth1Data(len(dep))
-	require.NoError(t, err)
-
-	b := util.NewBeaconBlock()
-	b.Block = &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			Deposits: []*ethpb.Deposit{dep[0]},
-		},
-	}
-	registry := []*ethpb.Validator{
-		{
-			PublicKey:             []byte{1},
-			WithdrawalCredentials: []byte{1, 2, 3},
-		},
-	}
-	balances := []uint64{0}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data:   eth1Data,
-		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-		},
-	})
-	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
-	require.NoError(t, err, "Expected block deposits to process correctly")
-	if newState.Balances()[1] != dep[0].Data.Amount {
-		t.Errorf(
-			"Expected state validator balances index 0 to equal %d, received %d",
-			dep[0].Data.Amount,
-			newState.Balances()[1],
-		)
-	}
-}
-
-func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T) {
+func TestIsValidDepositSignature_Ok(t *testing.T) {
 	sk, err := bls.RandKey()
 	require.NoError(t, err)
-	deposit := &ethpb.Deposit{
-		Data: &ethpb.Deposit_Data{
-			PublicKey:             sk.PublicKey().Marshal(),
-			Amount:                1000,
-			WithdrawalCredentials: make([]byte, 32),
-			Signature:             make([]byte, fieldparams.BLSSignatureLength),
-		},
+	depositData := &ethpb.Deposit_Data{
+		PublicKey:             sk.PublicKey().Marshal(),
+		Amount:                0,
+		WithdrawalCredentials: make([]byte, 32),
+		Signature:             make([]byte, fieldparams.BLSSignatureLength),
 	}
-	sr, err := signing.ComputeSigningRoot(deposit.Data, bytesutil.ToBytes(3, 32))
+	dm := &ethpb.DepositMessage{
+		PublicKey:             sk.PublicKey().Marshal(),
+		WithdrawalCredentials: make([]byte, 32),
+		Amount:                0,
+	}
+	domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
+	require.NoError(t, err)
+	sr, err := signing.ComputeSigningRoot(dm, domain)
 	require.NoError(t, err)
 	sig := sk.Sign(sr[:])
-	deposit.Data.Signature = sig.Marshal()
-	leaf, err := deposit.Data.HashTreeRoot()
+	depositData.Signature = sig.Marshal()
+	valid, err := blocks.IsValidDepositSignature(depositData)
 	require.NoError(t, err)
-
-	// We then create a merkle branch for the test.
-	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
-	require.NoError(t, err, "Could not generate trie")
-	proof, err := depositTrie.MerkleProof(0)
-	require.NoError(t, err, "Could not generate proof")
-
-	deposit.Proof = proof
-	b := util.NewBeaconBlock()
-	b.Block = &ethpb.BeaconBlock{
-		Body: &ethpb.BeaconBlockBody{
-			Deposits: []*ethpb.Deposit{deposit},
-		},
-	}
-	registry := []*ethpb.Validator{
-		{
-			PublicKey: []byte{1, 2, 3},
-		},
-		{
-			PublicKey:             sk.PublicKey().Marshal(),
-			WithdrawalCredentials: []byte{1},
-		},
-	}
-	balances := []uint64{0, 50}
-	root, err := depositTrie.HashTreeRoot()
-	require.NoError(t, err)
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data: &ethpb.Eth1Data{
-			DepositRoot: root[:],
-			BlockHash:   root[:],
-		},
-	})
-	require.NoError(t, err)
-	newState, err := blocks.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
-	require.NoError(t, err, "Process deposit failed")
-	assert.Equal(t, uint64(1000+50), newState.Balances()[1], "Expected balance at index 1 to be 1050")
-}
-
-func TestProcessDeposit_AddsNewValidatorDeposit(t *testing.T) {
-	// Similar to TestProcessDeposits_AddsNewValidatorDeposit except that this test directly calls ProcessDeposit
-	dep, _, err := util.DeterministicDepositsAndKeys(1)
-	require.NoError(t, err)
-	eth1Data, err := util.DeterministicEth1Data(len(dep))
-	require.NoError(t, err)
-
-	registry := []*ethpb.Validator{
-		{
-			PublicKey:             []byte{1},
-			WithdrawalCredentials: []byte{1, 2, 3},
-		},
-	}
-	balances := []uint64{0}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data:   eth1Data,
-		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-		},
-	})
-	require.NoError(t, err)
-	newState, isNewValidator, err := blocks.ProcessDeposit(beaconState, dep[0], true)
-	require.NoError(t, err, "Process deposit failed")
-	assert.Equal(t, true, isNewValidator, "Expected isNewValidator to be true")
-	assert.Equal(t, 2, len(newState.Validators()), "Expected validator list to have length 2")
-	assert.Equal(t, 2, len(newState.Balances()), "Expected validator balances list to have length 2")
-	if newState.Balances()[1] != dep[0].Data.Amount {
-		t.Errorf(
-			"Expected state validator balances index 1 to equal %d, received %d",
-			dep[0].Data.Amount,
-			newState.Balances()[1],
-		)
-	}
-}
-
-func TestProcessDeposit_SkipsInvalidDeposit(t *testing.T) {
-	// Same test settings as in TestProcessDeposit_AddsNewValidatorDeposit, except that we use an invalid signature
-	dep, _, err := util.DeterministicDepositsAndKeys(1)
-	require.NoError(t, err)
-	dep[0].Data.Signature = make([]byte, 96)
-	dt, _, err := util.DepositTrieFromDeposits(dep)
-	require.NoError(t, err)
-	root, err := dt.HashTreeRoot()
-	require.NoError(t, err)
-	eth1Data := &ethpb.Eth1Data{
-		DepositRoot:  root[:],
-		DepositCount: 1,
-	}
-	registry := []*ethpb.Validator{
-		{
-			PublicKey:             []byte{1},
-			WithdrawalCredentials: []byte{1, 2, 3},
-		},
-	}
-	balances := []uint64{0}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data:   eth1Data,
-		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-		},
-	})
-	require.NoError(t, err)
-	newState, isNewValidator, err := blocks.ProcessDeposit(beaconState, dep[0], true)
-	require.NoError(t, err, "Expected invalid block deposit to be ignored without error")
-	assert.Equal(t, false, isNewValidator, "Expected isNewValidator to be false")
-
-	if newState.Eth1DepositIndex() != 1 {
-		t.Errorf(
-			"Expected Eth1DepositIndex to be increased by 1 after processing an invalid deposit, received change: %v",
-			newState.Eth1DepositIndex(),
-		)
-	}
-	if len(newState.Validators()) != 1 {
-		t.Errorf("Expected validator list to have length 1, received: %v", len(newState.Validators()))
-	}
-	if len(newState.Balances()) != 1 {
-		t.Errorf("Expected validator balances list to have length 1, received: %v", len(newState.Balances()))
-	}
-	if newState.Balances()[0] != 0 {
-		t.Errorf("Expected validator balance at index 0 to stay 0, received: %v", newState.Balances()[0])
-	}
-}
-
-func TestPreGenesisDeposits_SkipInvalidDeposit(t *testing.T) {
-
-	dep, _, err := util.DeterministicDepositsAndKeys(100)
-	require.NoError(t, err)
-	dep[0].Data.Signature = make([]byte, 96)
-	dt, _, err := util.DepositTrieFromDeposits(dep)
-	require.NoError(t, err)
-
-	for i := range dep {
-		proof, err := dt.MerkleProof(i)
-		require.NoError(t, err)
-		dep[i].Proof = proof
-	}
-	root, err := dt.HashTreeRoot()
-	require.NoError(t, err)
-
-	eth1Data := &ethpb.Eth1Data{
-		DepositRoot:  root[:],
-		DepositCount: 1,
-	}
-	registry := []*ethpb.Validator{
-		{
-			PublicKey:             []byte{1},
-			WithdrawalCredentials: []byte{1, 2, 3},
-		},
-	}
-	balances := []uint64{0}
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data:   eth1Data,
-		Fork: &ethpb.Fork{
-			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
-			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
-		},
-	})
-	require.NoError(t, err)
-	newState, err := blocks.ProcessPreGenesisDeposits(context.Background(), beaconState, dep)
-	require.NoError(t, err, "Expected invalid block deposit to be ignored without error")
-
-	_, ok := newState.ValidatorIndexByPubkey(bytesutil.ToBytes48(dep[0].Data.PublicKey))
-	require.Equal(t, false, ok, "bad pubkey should not exist in state")
-
-	for i := 1; i < newState.NumValidators(); i++ {
-		val, err := newState.ValidatorAtIndex(primitives.ValidatorIndex(i))
-		require.NoError(t, err)
-		require.Equal(t, params.BeaconConfig().MaxEffectiveBalance, val.EffectiveBalance, "unequal effective balance")
-		require.Equal(t, primitives.Epoch(0), val.ActivationEpoch)
-		require.Equal(t, primitives.Epoch(0), val.ActivationEligibilityEpoch)
-	}
-	if newState.Eth1DepositIndex() != 100 {
-		t.Errorf(
-			"Expected Eth1DepositIndex to be increased by 99 after processing an invalid deposit, received change: %v",
-			newState.Eth1DepositIndex(),
-		)
-	}
-	if len(newState.Validators()) != 100 {
-		t.Errorf("Expected validator list to have length 100, received: %v", len(newState.Validators()))
-	}
-	if len(newState.Balances()) != 100 {
-		t.Errorf("Expected validator balances list to have length 100, received: %v", len(newState.Balances()))
-	}
-	if newState.Balances()[0] != 0 {
-		t.Errorf("Expected validator balance at index 0 to stay 0, received: %v", newState.Balances()[0])
-	}
-}
-
-func TestProcessDeposit_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T) {
-	sk, err := bls.RandKey()
-	require.NoError(t, err)
-	deposit := &ethpb.Deposit{
-		Data: &ethpb.Deposit_Data{
-			PublicKey:             sk.PublicKey().Marshal(),
-			Amount:                1000,
-			WithdrawalCredentials: make([]byte, 32),
-			Signature:             make([]byte, 96),
-		},
-	}
-	sr, err := signing.ComputeSigningRoot(deposit.Data, bytesutil.ToBytes(3, 32))
-	require.NoError(t, err)
-	sig := sk.Sign(sr[:])
-	deposit.Data.Signature = sig.Marshal()
-	leaf, err := deposit.Data.HashTreeRoot()
-	require.NoError(t, err)
-
-	// We then create a merkle branch for the test.
-	depositTrie, err := trie.GenerateTrieFromItems([][]byte{leaf[:]}, params.BeaconConfig().DepositContractTreeDepth)
-	require.NoError(t, err, "Could not generate trie")
-	proof, err := depositTrie.MerkleProof(0)
-	require.NoError(t, err, "Could not generate proof")
-
-	deposit.Proof = proof
-	registry := []*ethpb.Validator{
-		{
-			PublicKey: []byte{1, 2, 3},
-		},
-		{
-			PublicKey:             sk.PublicKey().Marshal(),
-			WithdrawalCredentials: []byte{1},
-		},
-	}
-	balances := []uint64{0, 50}
-	root, err := depositTrie.HashTreeRoot()
-	require.NoError(t, err)
-
-	beaconState, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
-		Validators: registry,
-		Balances:   balances,
-		Eth1Data: &ethpb.Eth1Data{
-			DepositRoot: root[:],
-			BlockHash:   root[:],
-		},
-	})
-	require.NoError(t, err)
-	newState, isNewValidator, err := blocks.ProcessDeposit(beaconState, deposit, true /*verifySignature*/)
-	require.NoError(t, err, "Process deposit failed")
-	assert.Equal(t, false, isNewValidator, "Expected isNewValidator to be false")
-	assert.Equal(t, uint64(1000+50), newState.Balances()[1], "Expected balance at index 1 to be 1050")
+	require.Equal(t, true, valid)
 }

beacon-chain/core/blocks/eth1_data.go

@@ -58,10 +58,9 @@ func AreEth1DataEqual(a, b *ethpb.Eth1Data) bool {
 // votes to see if they match the eth1data.
 func Eth1DataHasEnoughSupport(beaconState state.ReadOnlyBeaconState, data *ethpb.Eth1Data) (bool, error) {
 	voteCount := uint64(0)
-	data = ethpb.CopyETH1Data(data)
 
 	for _, vote := range beaconState.Eth1DataVotes() {
-		if AreEth1DataEqual(vote, data) {
+		if AreEth1DataEqual(vote, data.Copy()) {
 			voteCount++
 		}
 	}

beacon-chain/core/blocks/eth1_data_test.go

@@ -186,7 +186,7 @@ func TestProcessEth1Data_SetsCorrectly(t *testing.T) {
 	if len(newETH1DataVotes) <= 1 {
 		t.Error("Expected new ETH1 data votes to have length > 1")
 	}
-	if !proto.Equal(beaconState.Eth1Data(), ethpb.CopyETH1Data(b.Block.Body.Eth1Data)) {
+	if !proto.Equal(beaconState.Eth1Data(), b.Block.Body.Eth1Data.Copy()) {
 		t.Errorf(
 			"Expected latest eth1 data to have been set to %v, received %v",
 			b.Block.Body.Eth1Data,

beacon-chain/core/blocks/exit.go

@@ -98,6 +98,8 @@ func ProcessVoluntaryExits(
 //	 assert get_current_epoch(state) >= voluntary_exit.epoch
 //	 # Verify the validator has been active long enough
 //	 assert get_current_epoch(state) >= validator.activation_epoch + SHARD_COMMITTEE_PERIOD
+//	 # Only exit validator if it has no pending withdrawals in the queue
+//	 assert get_pending_balance_to_withdraw(state, voluntary_exit.validator_index) == 0  # [New in Electra:EIP7251]
 //	 # Verify signature
 //	 domain = get_domain(state, DOMAIN_VOLUNTARY_EXIT, voluntary_exit.epoch)
 //	 signing_root = compute_signing_root(voluntary_exit, domain)
@@ -113,7 +115,6 @@ func VerifyExitAndSignature(
 		return errors.New("nil exit")
 	}
 
-	currentSlot := state.Slot()
 	fork := state.Fork()
 	genesisRoot := state.GenesisValidatorsRoot()
 
@@ -128,7 +129,7 @@ func VerifyExitAndSignature(
 	}
 
 	exit := signed.Exit
-	if err := verifyExitConditions(validator, currentSlot, exit); err != nil {
+	if err := verifyExitConditions(state, validator, exit); err != nil {
 		return err
 	}
 	domain, err := signing.Domain(fork, exit.Epoch, params.BeaconConfig().DomainVoluntaryExit, genesisRoot)
@@ -157,14 +158,16 @@ func VerifyExitAndSignature(
 //	 assert get_current_epoch(state) >= voluntary_exit.epoch
 //	 # Verify the validator has been active long enough
 //	 assert get_current_epoch(state) >= validator.activation_epoch + SHARD_COMMITTEE_PERIOD
+//	 # Only exit validator if it has no pending withdrawals in the queue
+//	 assert get_pending_balance_to_withdraw(state, voluntary_exit.validator_index) == 0  # [New in Electra:EIP7251]
 //	 # Verify signature
 //	 domain = get_domain(state, DOMAIN_VOLUNTARY_EXIT, voluntary_exit.epoch)
 //	 signing_root = compute_signing_root(voluntary_exit, domain)
 //	 assert bls.Verify(validator.pubkey, signing_root, signed_voluntary_exit.signature)
 //	 # Initiate exit
 //	 initiate_validator_exit(state, voluntary_exit.validator_index)
-func verifyExitConditions(validator state.ReadOnlyValidator, currentSlot primitives.Slot, exit *ethpb.VoluntaryExit) error {
-	currentEpoch := slots.ToEpoch(currentSlot)
+func verifyExitConditions(st state.ReadOnlyBeaconState, validator state.ReadOnlyValidator, exit *ethpb.VoluntaryExit) error {
+	currentEpoch := slots.ToEpoch(st.Slot())
 	// Verify the validator is active.
 	if !helpers.IsActiveValidatorUsingTrie(validator, currentEpoch) {
 		return errors.New("non-active validator cannot exit")
@@ -187,5 +190,17 @@ func verifyExitConditions(validator state.ReadOnlyValidator, currentSlot primiti
 			validator.ActivationEpoch()+params.BeaconConfig().ShardCommitteePeriod,
 		)
 	}
+
+	if st.Version() >= version.Electra {
+		// Only exit validator if it has no pending withdrawals in the queue.
+		ok, err := st.HasPendingBalanceToWithdraw(exit.ValidatorIndex)
+		if err != nil {
+			return fmt.Errorf("unable to retrieve pending balance to withdraw for validator %d: %w", exit.ValidatorIndex, err)
+		}
+		if ok {
+			return fmt.Errorf("validator %d must have no pending balance to withdraw", exit.ValidatorIndex)
+		}
+	}
+
 	return nil
 }

beacon-chain/core/blocks/exit_test.go

@@ -135,6 +135,11 @@ func TestProcessVoluntaryExits_AppliesCorrectStatus(t *testing.T) {
 }
 
 func TestVerifyExitAndSignature(t *testing.T) {
+	// Remove after electra fork epoch is defined.
+	cfg := params.BeaconConfig()
+	cfg.ElectraForkEpoch = cfg.DenebForkEpoch * 2
+	params.SetActiveTestCleanup(t, cfg)
+	// End remove section.
 	denebSlot, err := slots.EpochStart(params.BeaconConfig().DenebForkEpoch)
 	require.NoError(t, err)
 	tests := []struct {
@@ -167,7 +172,7 @@ func TestVerifyExitAndSignature(t *testing.T) {
 			wantErr: "nil exit",
 		},
 		{
-			name: "Happy Path",
+			name: "Happy Path phase0",
 			setup: func() (*ethpb.Validator, *ethpb.SignedVoluntaryExit, state.ReadOnlyBeaconState, error) {
 				fork := &ethpb.Fork{
 					PreviousVersion: params.BeaconConfig().GenesisForkVersion,
@@ -275,6 +280,52 @@ func TestVerifyExitAndSignature(t *testing.T) {
 				return validator, signedExit, bs, nil
 			},
 		},
+		{
+			name: "EIP-7251 - pending balance to withdraw must be zero",
+			setup: func() (*ethpb.Validator, *ethpb.SignedVoluntaryExit, state.ReadOnlyBeaconState, error) {
+				fork := &ethpb.Fork{
+					PreviousVersion: params.BeaconConfig().DenebForkVersion,
+					CurrentVersion:  params.BeaconConfig().ElectraForkVersion,
+					Epoch:           params.BeaconConfig().ElectraForkEpoch,
+				}
+				signedExit := &ethpb.SignedVoluntaryExit{
+					Exit: &ethpb.VoluntaryExit{
+						Epoch:          params.BeaconConfig().DenebForkEpoch + 1,
+						ValidatorIndex: 0,
+					},
+				}
+				electraSlot, err := slots.EpochStart(params.BeaconConfig().ElectraForkEpoch)
+				require.NoError(t, err)
+				bs, keys := util.DeterministicGenesisState(t, 1)
+				bs, err = state_native.InitializeFromProtoUnsafeElectra(&ethpb.BeaconStateElectra{
+					GenesisValidatorsRoot: bs.GenesisValidatorsRoot(),
+					Fork:                  fork,
+					Slot:                  electraSlot,
+					Validators:            bs.Validators(),
+				})
+				if err != nil {
+					return nil, nil, nil, err
+				}
+				validator := bs.Validators()[0]
+				validator.ActivationEpoch = 1
+				err = bs.UpdateValidatorAtIndex(0, validator)
+				require.NoError(t, err)
+				sb, err := signing.ComputeDomainAndSign(bs, signedExit.Exit.Epoch, signedExit.Exit, params.BeaconConfig().DomainVoluntaryExit, keys[0])
+				require.NoError(t, err)
+				sig, err := bls.SignatureFromBytes(sb)
+				require.NoError(t, err)
+				signedExit.Signature = sig.Marshal()
+
+				// Give validator a pending balance to withdraw.
+				require.NoError(t, bs.AppendPendingPartialWithdrawal(&ethpb.PendingPartialWithdrawal{
+					Index:  0,
+					Amount: 500,
+				}))
+
+				return validator, signedExit, bs, nil
+			},
+			wantErr: "validator 0 must have no pending balance to withdraw",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

beacon-chain/core/blocks/exports_test.go

@@ -1,3 +1,5 @@
 package blocks
 
 var ProcessBLSToExecutionChange = processBLSToExecutionChange
+
+var VerifyBlobCommitmentCount = verifyBlobCommitmentCount

beacon-chain/core/blocks/payload.go

@@ -2,11 +2,13 @@ package blocks
 
 import (
 	"bytes"
+	"fmt"
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	consensus_types "github.com/prysmaticlabs/prysm/v5/consensus-types"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
@@ -200,13 +202,13 @@ func ValidatePayload(st state.BeaconState, payload interfaces.ExecutionData) err
 //	    block_hash=payload.block_hash,
 //	    transactions_root=hash_tree_root(payload.transactions),
 //	)
-func ProcessPayload(st state.BeaconState, payload interfaces.ExecutionData) (state.BeaconState, error) {
-	var err error
-	if st.Version() >= version.Capella {
-		st, err = ProcessWithdrawals(st, payload)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not process withdrawals")
-		}
+func ProcessPayload(st state.BeaconState, body interfaces.ReadOnlyBeaconBlockBody) (state.BeaconState, error) {
+	payload, err := body.Execution()
+	if err != nil {
+		return nil, err
+	}
+	if err := verifyBlobCommitmentCount(body); err != nil {
+		return nil, err
 	}
 	if err := ValidatePayloadWhenMergeCompletes(st, payload); err != nil {
 		return nil, err
@@ -220,70 +222,20 @@ func ProcessPayload(st state.BeaconState, payload interfaces.ExecutionData) (sta
 	return st, nil
 }
 
-// ValidatePayloadHeaderWhenMergeCompletes validates the payload header when the merge completes.
-func ValidatePayloadHeaderWhenMergeCompletes(st state.BeaconState, header interfaces.ExecutionData) error {
-	// Skip validation if the state is not merge compatible.
-	complete, err := IsMergeTransitionComplete(st)
-	if err != nil {
-		return err
-	}
-	if !complete {
+func verifyBlobCommitmentCount(body interfaces.ReadOnlyBeaconBlockBody) error {
+	if body.Version() < version.Deneb {
 		return nil
 	}
-	// Validate current header's parent hash matches state header's block hash.
-	h, err := st.LatestExecutionPayloadHeader()
+	kzgs, err := body.BlobKzgCommitments()
 	if err != nil {
 		return err
 	}
-	if !bytes.Equal(header.ParentHash(), h.BlockHash()) {
-		return ErrInvalidPayloadBlockHash
+	if len(kzgs) > field_params.MaxBlobsPerBlock {
+		return fmt.Errorf("too many kzg commitments in block: %d", len(kzgs))
 	}
 	return nil
 }
 
-// ValidatePayloadHeader validates the payload header.
-func ValidatePayloadHeader(st state.BeaconState, header interfaces.ExecutionData) error {
-	// Validate header's random mix matches with state in current epoch
-	random, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
-	if err != nil {
-		return err
-	}
-	if !bytes.Equal(header.PrevRandao(), random) {
-		return ErrInvalidPayloadPrevRandao
-	}
-
-	// Validate header's timestamp matches with state in current slot.
-	t, err := slots.ToTime(st.GenesisTime(), st.Slot())
-	if err != nil {
-		return err
-	}
-	if header.Timestamp() != uint64(t.Unix()) {
-		return ErrInvalidPayloadTimeStamp
-	}
-	return nil
-}
-
-// ProcessPayloadHeader processes the payload header.
-func ProcessPayloadHeader(st state.BeaconState, header interfaces.ExecutionData) (state.BeaconState, error) {
-	var err error
-	if st.Version() >= version.Capella {
-		st, err = ProcessWithdrawals(st, header)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not process withdrawals")
-		}
-	}
-	if err := ValidatePayloadHeaderWhenMergeCompletes(st, header); err != nil {
-		return nil, err
-	}
-	if err := ValidatePayloadHeader(st, header); err != nil {
-		return nil, err
-	}
-	if err := st.SetLatestExecutionPayloadHeader(header); err != nil {
-		return nil, err
-	}
-	return st, nil
-}
-
 // GetBlockPayloadHash returns the hash of the execution payload of the block
 func GetBlockPayloadHash(blk interfaces.ReadOnlyBeaconBlock) ([32]byte, error) {
 	var payloadHash [32]byte

beacon-chain/core/blocks/payload_test.go

@@ -1,6 +1,7 @@
 package blocks_test
 
 import (
+	"fmt"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
@@ -13,6 +14,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/encoding/ssz"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	"github.com/prysmaticlabs/prysm/v5/testing/util"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
@@ -581,14 +583,18 @@ func Test_ProcessPayload(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			wrappedPayload, err := consensusblocks.WrappedExecutionPayload(tt.payload)
+			body, err := consensusblocks.NewBeaconBlockBody(&ethpb.BeaconBlockBodyBellatrix{
+				ExecutionPayload: tt.payload,
+			})
 			require.NoError(t, err)
-			st, err := blocks.ProcessPayload(st, wrappedPayload)
+			st, err := blocks.ProcessPayload(st, body)
 			if err != nil {
 				require.Equal(t, tt.err.Error(), err.Error())
 			} else {
 				require.Equal(t, tt.err, err)
-				want, err := consensusblocks.PayloadToHeader(wrappedPayload)
+				payload, err := body.Execution()
+				require.NoError(t, err)
+				want, err := consensusblocks.PayloadToHeader(payload)
 				require.Equal(t, tt.err, err)
 				h, err := st.LatestExecutionPayloadHeader()
 				require.NoError(t, err)
@@ -609,13 +615,15 @@ func Test_ProcessPayloadCapella(t *testing.T) {
 	random, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
 	require.NoError(t, err)
 	payload.PrevRandao = random
-	wrapped, err := consensusblocks.WrappedExecutionPayloadCapella(payload)
+	body, err := consensusblocks.NewBeaconBlockBody(&ethpb.BeaconBlockBodyCapella{
+		ExecutionPayload: payload,
+	})
 	require.NoError(t, err)
-	_, err = blocks.ProcessPayload(st, wrapped)
+	_, err = blocks.ProcessPayload(st, body)
 	require.NoError(t, err)
 }
 
-func Test_ProcessPayloadHeader(t *testing.T) {
+func Test_ProcessPayload_Blinded(t *testing.T) {
 	st, _ := util.DeterministicGenesisStateBellatrix(t, 1)
 	random, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
 	require.NoError(t, err)
@@ -663,7 +671,13 @@ func Test_ProcessPayloadHeader(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			st, err := blocks.ProcessPayloadHeader(st, tt.header)
+			p, ok := tt.header.Proto().(*enginev1.ExecutionPayloadHeader)
+			require.Equal(t, true, ok)
+			body, err := consensusblocks.NewBeaconBlockBody(&ethpb.BlindedBeaconBlockBodyBellatrix{
+				ExecutionPayloadHeader: p,
+			})
+			require.NoError(t, err)
+			st, err := blocks.ProcessPayload(st, body)
 			if err != nil {
 				require.Equal(t, tt.err.Error(), err.Error())
 			} else {
@@ -728,7 +742,7 @@ func Test_ValidatePayloadHeader(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			err = blocks.ValidatePayloadHeader(st, tt.header)
+			err = blocks.ValidatePayload(st, tt.header)
 			require.Equal(t, tt.err, err)
 		})
 	}
@@ -785,7 +799,7 @@ func Test_ValidatePayloadHeaderWhenMergeCompletes(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			err = blocks.ValidatePayloadHeaderWhenMergeCompletes(tt.state, tt.header)
+			err = blocks.ValidatePayloadWhenMergeCompletes(tt.state, tt.header)
 			require.Equal(t, tt.err, err)
 		})
 	}
@@ -906,3 +920,15 @@ func emptyPayloadCapella() *enginev1.ExecutionPayloadCapella {
 		Withdrawals:   make([]*enginev1.Withdrawal, 0),
 	}
 }
+
+func TestVerifyBlobCommitmentCount(t *testing.T) {
+	b := &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{}}
+	rb, err := consensusblocks.NewBeaconBlock(b)
+	require.NoError(t, err)
+	require.NoError(t, blocks.VerifyBlobCommitmentCount(rb.Body()))
+
+	b = &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{BlobKzgCommitments: make([][]byte, fieldparams.MaxBlobsPerBlock+1)}}
+	rb, err = consensusblocks.NewBeaconBlock(b)
+	require.NoError(t, err)
+	require.ErrorContains(t, fmt.Sprintf("too many kzg commitments in block: %d", fieldparams.MaxBlobsPerBlock+1), blocks.VerifyBlobCommitmentCount(rb.Body()))
+}

beacon-chain/core/blocks/signature.go

@@ -204,12 +204,7 @@ func createAttestationSignatureBatch(
 			return nil, err
 		}
 		indices := ia.GetAttestingIndices()
-		pubkeys := make([][]byte, len(indices))
-		for i := 0; i < len(indices); i++ {
-			pubkeyAtIdx := beaconState.PubkeyAtIndex(primitives.ValidatorIndex(indices[i]))
-			pubkeys[i] = pubkeyAtIdx[:]
-		}
-		aggP, err := bls.AggregatePublicKeys(pubkeys)
+		aggP, err := beaconState.AggregateKeyFromIndices(indices)
 		if err != nil {
 			return nil, err
 		}

beacon-chain/core/blocks/withdrawals.go

@@ -120,32 +120,35 @@ func ValidateBLSToExecutionChange(st state.ReadOnlyBeaconState, signed *ethpb.Si
 //
 // Spec pseudocode definition:
 //
-// def process_withdrawals(state: BeaconState, payload: ExecutionPayload) -> None:
+//	def process_withdrawals(state: BeaconState, payload: ExecutionPayload) -> None:
+//	    expected_withdrawals, partial_withdrawals_count = get_expected_withdrawals(state)  # [Modified in Electra:EIP7251]
 //
-//	expected_withdrawals = get_expected_withdrawals(state)
-//	assert len(payload.withdrawals) == len(expected_withdrawals)
+//	    assert len(payload.withdrawals) == len(expected_withdrawals)
 //
-//	for expected_withdrawal, withdrawal in zip(expected_withdrawals, payload.withdrawals):
-//	    assert withdrawal == expected_withdrawal
-//	    decrease_balance(state, withdrawal.validator_index, withdrawal.amount)
+//	    for expected_withdrawal, withdrawal in zip(expected_withdrawals, payload.withdrawals):
+//	        assert withdrawal == expected_withdrawal
+//	        decrease_balance(state, withdrawal.validator_index, withdrawal.amount)
 //
-//	# Update the next withdrawal index if this block contained withdrawals
-//	if len(expected_withdrawals) != 0:
-//	    latest_withdrawal = expected_withdrawals[-1]
-//	    state.next_withdrawal_index = WithdrawalIndex(latest_withdrawal.index + 1)
+//	    # Update pending partial withdrawals [New in Electra:EIP7251]
+//	    state.pending_partial_withdrawals = state.pending_partial_withdrawals[partial_withdrawals_count:]
 //
-//	# Update the next validator index to start the next withdrawal sweep
-//	if len(expected_withdrawals) == MAX_WITHDRAWALS_PER_PAYLOAD:
-//	    # Next sweep starts after the latest withdrawal's validator index
-//	    next_validator_index = ValidatorIndex((expected_withdrawals[-1].validator_index + 1) % len(state.validators))
-//	    state.next_withdrawal_validator_index = next_validator_index
-//	else:
-//	    # Advance sweep by the max length of the sweep if there was not a full set of withdrawals
-//	    next_index = state.next_withdrawal_validator_index + MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP
-//	    next_validator_index = ValidatorIndex(next_index % len(state.validators))
-//	    state.next_withdrawal_validator_index = next_validator_index
+//	    # Update the next withdrawal index if this block contained withdrawals
+//	    if len(expected_withdrawals) != 0:
+//	        latest_withdrawal = expected_withdrawals[-1]
+//	        state.next_withdrawal_index = WithdrawalIndex(latest_withdrawal.index + 1)
+//
+//	    # Update the next validator index to start the next withdrawal sweep
+//	    if len(expected_withdrawals) == MAX_WITHDRAWALS_PER_PAYLOAD:
+//	        # Next sweep starts after the latest withdrawal's validator index
+//	        next_validator_index = ValidatorIndex((expected_withdrawals[-1].validator_index + 1) % len(state.validators))
+//	        state.next_withdrawal_validator_index = next_validator_index
+//	    else:
+//	        # Advance sweep by the max length of the sweep if there was not a full set of withdrawals
+//	        next_index = state.next_withdrawal_validator_index + MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP
+//	        next_validator_index = ValidatorIndex(next_index % len(state.validators))
+//	        state.next_withdrawal_validator_index = next_validator_index
 func ProcessWithdrawals(st state.BeaconState, executionData interfaces.ExecutionData) (state.BeaconState, error) {
-	expectedWithdrawals, _, err := st.ExpectedWithdrawals()
+	expectedWithdrawals, partialWithdrawalsCount, err := st.ExpectedWithdrawals()
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get expected withdrawals")
 	}
@@ -162,6 +165,11 @@ func ProcessWithdrawals(st state.BeaconState, executionData interfaces.Execution
 		if err != nil {
 			return nil, errors.Wrap(err, "could not get withdrawals")
 		}
+
+		if len(wds) != len(expectedWithdrawals) {
+			return nil, fmt.Errorf("execution payload header has %d withdrawals when %d were expected", len(wds), len(expectedWithdrawals))
+		}
+
 		wdRoot, err = ssz.WithdrawalSliceRoot(wds, fieldparams.MaxWithdrawalsPerPayload)
 		if err != nil {
 			return nil, errors.Wrap(err, "could not get withdrawals root")
@@ -182,6 +190,13 @@ func ProcessWithdrawals(st state.BeaconState, executionData interfaces.Execution
 			return nil, errors.Wrap(err, "could not decrease balance")
 		}
 	}
+
+	if st.Version() >= version.Electra {
+		if err := st.DequeuePartialWithdrawals(partialWithdrawalsCount); err != nil {
+			return nil, fmt.Errorf("unable to dequeue partial withdrawals from state: %w", err)
+		}
+	}
+
 	if len(expectedWithdrawals) > 0 {
 		if err := st.SetNextWithdrawalIndex(expectedWithdrawals[len(expectedWithdrawals)-1].Index + 1); err != nil {
 			return nil, errors.Wrap(err, "could not set next withdrawal index")

beacon-chain/core/blocks/withdrawals_test.go

@@ -12,6 +12,7 @@ import (
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls/common"
@@ -19,6 +20,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/encoding/ssz"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
@@ -675,6 +677,7 @@ func TestProcessWithdrawals(t *testing.T) {
 		FullWithdrawalIndices           []primitives.ValidatorIndex
 		PendingPartialWithdrawalIndices []primitives.ValidatorIndex
 		Withdrawals                     []*enginev1.Withdrawal
+		PendingPartialWithdrawals       []*ethpb.PendingPartialWithdrawal // Electra
 	}
 	type control struct {
 		NextWithdrawalValidatorIndex primitives.ValidatorIndex
@@ -772,7 +775,7 @@ func TestProcessWithdrawals(t *testing.T) {
 		},
 		{
 			Args: args{
-				Name:                         "Less than max sweep at end",
+				Name:                         "less than max sweep at end",
 				NextWithdrawalIndex:          22,
 				NextWithdrawalValidatorIndex: 4,
 				FullWithdrawalIndices:        []primitives.ValidatorIndex{80, 81, 82, 83},
@@ -789,7 +792,7 @@ func TestProcessWithdrawals(t *testing.T) {
 		},
 		{
 			Args: args{
-				Name:                         "Less than max sweep and beginning",
+				Name:                         "less than max sweep and beginning",
 				NextWithdrawalIndex:          22,
 				NextWithdrawalValidatorIndex: 4,
 				FullWithdrawalIndices:        []primitives.ValidatorIndex{4, 5, 6},
@@ -846,6 +849,36 @@ func TestProcessWithdrawals(t *testing.T) {
 				},
 			},
 		},
+		{
+			Args: args{
+				Name:                            "success many withdrawals with pending partial withdrawals in state",
+				NextWithdrawalIndex:             22,
+				NextWithdrawalValidatorIndex:    88,
+				FullWithdrawalIndices:           []primitives.ValidatorIndex{7, 19, 28},
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{2, 1, 89, 15},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(89, 22), PendingPartialWithdrawal(1, 23), PendingPartialWithdrawal(2, 24),
+					fullWithdrawal(7, 25), PendingPartialWithdrawal(15, 26), fullWithdrawal(19, 27),
+					fullWithdrawal(28, 28),
+				},
+				PendingPartialWithdrawals: []*ethpb.PendingPartialWithdrawal{
+					{
+						Index:  11,
+						Amount: withdrawalAmount(11) - maxEffectiveBalance,
+					},
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 40,
+				NextWithdrawalIndex:          29,
+				Balances: map[uint64]uint64{
+					7: 0, 19: 0, 28: 0,
+					2: maxEffectiveBalance, 1: maxEffectiveBalance, 89: maxEffectiveBalance,
+					15: maxEffectiveBalance,
+				},
+			},
+		},
+
 		{
 			Args: args{
 				Name:                         "success more than max fully withdrawals",
@@ -1011,65 +1044,97 @@ func TestProcessWithdrawals(t *testing.T) {
 		}
 	}
 
-	prepareValidators := func(st *ethpb.BeaconStateCapella, arguments args) (state.BeaconState, error) {
+	prepareValidators := func(st state.BeaconState, arguments args) error {
 		validators := make([]*ethpb.Validator, numValidators)
-		st.Balances = make([]uint64, numValidators)
+		if err := st.SetBalances(make([]uint64, numValidators)); err != nil {
+			return err
+		}
 		for i := range validators {
 			v := &ethpb.Validator{}
 			v.EffectiveBalance = maxEffectiveBalance
 			v.WithdrawableEpoch = epochInFuture
 			v.WithdrawalCredentials = make([]byte, 32)
 			v.WithdrawalCredentials[31] = byte(i)
-			st.Balances[i] = v.EffectiveBalance - uint64(rand.Intn(1000))
+			if err := st.UpdateBalancesAtIndex(primitives.ValidatorIndex(i), v.EffectiveBalance-uint64(rand.Intn(1000))); err != nil {
+				return err
+			}
 			validators[i] = v
 		}
 		for _, idx := range arguments.FullWithdrawalIndices {
 			if idx != notWithdrawableIndex {
 				validators[idx].WithdrawableEpoch = epochInPast
 			}
-			st.Balances[idx] = withdrawalAmount(idx)
+			if err := st.UpdateBalancesAtIndex(idx, withdrawalAmount(idx)); err != nil {
+				return err
+			}
 			validators[idx].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
 		}
 		for _, idx := range arguments.PendingPartialWithdrawalIndices {
 			validators[idx].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
-			st.Balances[idx] = withdrawalAmount(idx)
+			if err := st.UpdateBalancesAtIndex(idx, withdrawalAmount(idx)); err != nil {
+				return err
+			}
 		}
-		st.Validators = validators
-		return state_native.InitializeFromProtoCapella(st)
+		return st.SetValidators(validators)
 	}
 
 	for _, test := range tests {
 		t.Run(test.Args.Name, func(t *testing.T) {
-			saved := params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep
-			params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = maxSweep
-			if test.Args.Withdrawals == nil {
-				test.Args.Withdrawals = make([]*enginev1.Withdrawal, 0)
+			for _, fork := range []int{version.Capella, version.Electra} {
+				t.Run(version.String(fork), func(t *testing.T) {
+					saved := params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep
+					params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = maxSweep
+					if test.Args.Withdrawals == nil {
+						test.Args.Withdrawals = make([]*enginev1.Withdrawal, 0)
+					}
+					if test.Args.FullWithdrawalIndices == nil {
+						test.Args.FullWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
+					}
+					if test.Args.PendingPartialWithdrawalIndices == nil {
+						test.Args.PendingPartialWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
+					}
+					slot, err := slots.EpochStart(currentEpoch)
+					require.NoError(t, err)
+					var st state.BeaconState
+					var p interfaces.ExecutionData
+					switch fork {
+					case version.Capella:
+						spb := &ethpb.BeaconStateCapella{
+							Slot:                         slot,
+							NextWithdrawalValidatorIndex: test.Args.NextWithdrawalValidatorIndex,
+							NextWithdrawalIndex:          test.Args.NextWithdrawalIndex,
+						}
+						st, err = state_native.InitializeFromProtoUnsafeCapella(spb)
+						require.NoError(t, err)
+						p, err = consensusblocks.WrappedExecutionPayloadCapella(&enginev1.ExecutionPayloadCapella{Withdrawals: test.Args.Withdrawals})
+						require.NoError(t, err)
+					case version.Electra:
+						spb := &ethpb.BeaconStateElectra{
+							Slot:                         slot,
+							NextWithdrawalValidatorIndex: test.Args.NextWithdrawalValidatorIndex,
+							NextWithdrawalIndex:          test.Args.NextWithdrawalIndex,
+							PendingPartialWithdrawals:    test.Args.PendingPartialWithdrawals,
+						}
+						st, err = state_native.InitializeFromProtoUnsafeElectra(spb)
+						require.NoError(t, err)
+						p, err = consensusblocks.WrappedExecutionPayloadElectra(&enginev1.ExecutionPayloadElectra{Withdrawals: test.Args.Withdrawals})
+						require.NoError(t, err)
+					default:
+						t.Fatalf("Add a beacon state setup for version %s", version.String(fork))
+					}
+					err = prepareValidators(st, test.Args)
+					require.NoError(t, err)
+					post, err := blocks.ProcessWithdrawals(st, p)
+					if test.Control.ExpectedError {
+						require.NotNil(t, err)
+					} else {
+						require.NoError(t, err)
+						checkPostState(t, test.Control, post)
+					}
+					params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = saved
+
+				})
 			}
-			if test.Args.FullWithdrawalIndices == nil {
-				test.Args.FullWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
-			}
-			if test.Args.PendingPartialWithdrawalIndices == nil {
-				test.Args.PendingPartialWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
-			}
-			slot, err := slots.EpochStart(currentEpoch)
-			require.NoError(t, err)
-			spb := &ethpb.BeaconStateCapella{
-				Slot:                         slot,
-				NextWithdrawalValidatorIndex: test.Args.NextWithdrawalValidatorIndex,
-				NextWithdrawalIndex:          test.Args.NextWithdrawalIndex,
-			}
-			st, err := prepareValidators(spb, test.Args)
-			require.NoError(t, err)
-			p, err := consensusblocks.WrappedExecutionPayloadCapella(&enginev1.ExecutionPayloadCapella{Withdrawals: test.Args.Withdrawals})
-			require.NoError(t, err)
-			post, err := blocks.ProcessWithdrawals(st, p)
-			if test.Control.ExpectedError {
-				require.NotNil(t, err)
-			} else {
-				require.NoError(t, err)
-				checkPostState(t, test.Control, post)
-			}
-			params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = saved
 		})
 	}
 }

beacon-chain/core/electra/BUILD.bazel

@@ -10,6 +10,7 @@ go_library(
         "effective_balance_updates.go",
         "registry_updates.go",
         "transition.go",
+        "transition_no_verify_sig.go",
         "upgrade.go",
         "validator.go",
         "withdrawals.go",
@@ -18,6 +19,7 @@ go_library(
     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",
@@ -27,8 +29,9 @@ go_library(
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/state-native:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
-        "//crypto/bls:go_default_library",
+        "//contracts/deposit:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
         "//proto/engine/v1:go_default_library",
@@ -46,8 +49,11 @@ go_test(
     srcs = [
         "churn_test.go",
         "consolidations_test.go",
+        "deposit_fuzz_test.go",
         "deposits_test.go",
         "effective_balance_updates_test.go",
+        "registry_updates_test.go",
+        "transition_test.go",
         "upgrade_test.go",
         "validator_test.go",
         "withdrawals_test.go",
@@ -61,18 +67,19 @@ go_test(
         "//beacon-chain/state/state-native:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/blocks:go_default_library",
         "//consensus-types/primitives:go_default_library",
-        "//crypto/bls/blst:go_default_library",
-        "//crypto/bls/common: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",
-        "//runtime/interop:go_default_library",
         "//testing/assert: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_sirupsen_logrus//:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
     ],

beacon-chain/core/electra/churn_test.go

@@ -2,6 +2,7 @@ package electra_test
 
 import (
 	"context"
+	"fmt"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
@@ -18,10 +19,17 @@ func createValidatorsWithTotalActiveBalance(totalBal primitives.Gwei) []*eth.Val
 	num := totalBal / primitives.Gwei(params.BeaconConfig().MinActivationBalance)
 	vals := make([]*eth.Validator, num)
 	for i := range vals {
+		wd := make([]byte, 32)
+		wd[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+		wd[31] = byte(i)
+
 		vals[i] = &eth.Validator{
-			ActivationEpoch:  primitives.Epoch(0),
-			ExitEpoch:        params.BeaconConfig().FarFutureEpoch,
-			EffectiveBalance: params.BeaconConfig().MinActivationBalance,
+			ActivationEpoch:       primitives.Epoch(0),
+			EffectiveBalance:      params.BeaconConfig().MinActivationBalance,
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             []byte(fmt.Sprintf("val_%d", i)),
+			WithdrawableEpoch:     params.BeaconConfig().FarFutureEpoch,
+			WithdrawalCredentials: wd,
 		}
 	}
 	if totalBal%primitives.Gwei(params.BeaconConfig().MinActivationBalance) != 0 {

beacon-chain/core/electra/consolidations.go

@@ -1,16 +1,18 @@
 package electra
 
 import (
+	"bytes"
 	"context"
+	"fmt"
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
-	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"go.opencensus.io/trace"
 )
@@ -40,14 +42,14 @@ import (
 //
 //	    state.pending_consolidations = state.pending_consolidations[next_pending_consolidation:]
 func ProcessPendingConsolidations(ctx context.Context, st state.BeaconState) error {
-	ctx, span := trace.StartSpan(ctx, "electra.ProcessPendingConsolidations")
+	_, span := trace.StartSpan(ctx, "electra.ProcessPendingConsolidations")
 	defer span.End()
 
 	if st == nil || st.IsNil() {
 		return errors.New("nil state")
 	}
 
-	currentEpoch := slots.ToEpoch(st.Slot())
+	nextEpoch := slots.ToEpoch(st.Slot()) + 1
 
 	var nextPendingConsolidation uint64
 	pendingConsolidations, err := st.PendingConsolidations()
@@ -64,11 +66,11 @@ func ProcessPendingConsolidations(ctx context.Context, st state.BeaconState) err
 			nextPendingConsolidation++
 			continue
 		}
-		if sourceValidator.WithdrawableEpoch > currentEpoch {
+		if sourceValidator.WithdrawableEpoch > nextEpoch {
 			break
 		}
 
-		if err := SwitchToCompoundingValidator(ctx, st, pc.TargetIndex); err != nil {
+		if err := SwitchToCompoundingValidator(st, pc.TargetIndex); err != nil {
 			return err
 		}
 
@@ -92,165 +94,159 @@ func ProcessPendingConsolidations(ctx context.Context, st state.BeaconState) err
 	return nil
 }
 
-// ProcessConsolidations implements the spec definition below. This method makes mutating calls to
-// the beacon state.
+// ProcessConsolidationRequests implements the spec definition below. This method makes mutating
+// calls to the beacon state.
 //
-// Spec definition:
+//	def process_consolidation_request(
+//	    state: BeaconState,
+//	    consolidation_request: ConsolidationRequest
+//	) -> None:
+//	    # 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]
 //
-//	def process_consolidation(state: BeaconState, signed_consolidation: SignedConsolidation) -> None:
-//	    # If the pending consolidations queue is full, no consolidations are allowed in the block
-//	    assert len(state.pending_consolidations) < PENDING_CONSOLIDATIONS_LIMIT
-//	    # If there is too little available consolidation churn limit, no consolidations are allowed in the block
-//	    assert get_consolidation_churn_limit(state) > MIN_ACTIVATION_BALANCE
-//	    consolidation = signed_consolidation.message
 //	    # Verify that source != target, so a consolidation cannot be used as an exit.
-//	    assert consolidation.source_index != consolidation.target_index
+//	    if source_index == target_index:
+//	        return
+//
+//	    # 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 execution withdrawal credentials
+//	    if not has_execution_withdrawal_credential(target_validator):
+//	        return
 //
-//	    source_validator = state.validators[consolidation.source_index]
-//	    target_validator = state.validators[consolidation.target_index]
 //	    # Verify the source and the target are active
 //	    current_epoch = get_current_epoch(state)
-//	    assert is_active_validator(source_validator, current_epoch)
-//	    assert is_active_validator(target_validator, current_epoch)
+//	    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
-//	    assert source_validator.exit_epoch == FAR_FUTURE_EPOCH
-//	    assert target_validator.exit_epoch == FAR_FUTURE_EPOCH
-//	    # Consolidations must specify an epoch when they become valid; they are not valid before then
-//	    assert current_epoch >= consolidation.epoch
-//
-//	    # Verify the source and the target have Execution layer withdrawal credentials
-//	    assert has_execution_withdrawal_credential(source_validator)
-//	    assert has_execution_withdrawal_credential(target_validator)
-//	    # Verify the same withdrawal address
-//	    assert source_validator.withdrawal_credentials[12:] == target_validator.withdrawal_credentials[12:]
-//
-//	    # Verify consolidation is signed by the source and the target
-//	    domain = compute_domain(DOMAIN_CONSOLIDATION, genesis_validators_root=state.genesis_validators_root)
-//	    signing_root = compute_signing_root(consolidation, domain)
-//	    pubkeys = [source_validator.pubkey, target_validator.pubkey]
-//	    assert bls.FastAggregateVerify(pubkeys, signing_root, signed_consolidation.signature)
+//	    if source_validator.exit_epoch != FAR_FUTURE_EPOCH:
+//	        return
+//	    if target_validator.exit_epoch != FAR_FUTURE_EPOCH:
+//	        return
 //
 //	    # Initiate source validator exit and append pending consolidation
 //	    source_validator.exit_epoch = compute_consolidation_epoch_and_update_churn(
-//	        state, source_validator.effective_balance)
+//	        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=consolidation.source_index,
-//	        target_index=consolidation.target_index
+//	        source_index=source_index,
+//	        target_index=target_index
 //	    ))
-func ProcessConsolidations(ctx context.Context, st state.BeaconState, cs []*ethpb.SignedConsolidation) error {
-	_, span := trace.StartSpan(ctx, "electra.ProcessConsolidations")
-	defer span.End()
-
-	if st == nil || st.IsNil() {
-		return errors.New("nil state")
+func ProcessConsolidationRequests(ctx context.Context, st state.BeaconState, reqs []*enginev1.ConsolidationRequest) error {
+	if len(reqs) == 0 || st == nil {
+		return nil
 	}
 
-	if len(cs) == 0 {
-		return nil // Nothing to process.
-	}
-
-	domain, err := signing.ComputeDomain(
-		params.BeaconConfig().DomainConsolidation,
-		nil, // Use genesis fork version
-		st.GenesisValidatorsRoot(),
-	)
+	activeBal, err := helpers.TotalActiveBalance(st)
 	if err != nil {
 		return err
 	}
-
-	totalBalance, err := helpers.TotalActiveBalance(st)
-	if err != nil {
-		return err
+	churnLimit := helpers.ConsolidationChurnLimit(primitives.Gwei(activeBal))
+	if churnLimit <= primitives.Gwei(params.BeaconConfig().MinActivationBalance) {
+		return nil
 	}
+	curEpoch := slots.ToEpoch(st.Slot())
+	ffe := params.BeaconConfig().FarFutureEpoch
+	minValWithdrawDelay := params.BeaconConfig().MinValidatorWithdrawabilityDelay
+	pcLimit := params.BeaconConfig().PendingConsolidationsLimit
 
-	if helpers.ConsolidationChurnLimit(primitives.Gwei(totalBalance)) <= primitives.Gwei(params.BeaconConfig().MinActivationBalance) {
-		return errors.New("too little available consolidation churn limit")
-	}
-
-	currentEpoch := slots.ToEpoch(st.Slot())
-
-	for _, c := range cs {
-		if c == nil || c.Message == nil {
-			return errors.New("nil consolidation")
+	for _, cr := range reqs {
+		if ctx.Err() != nil {
+			return fmt.Errorf("cannot process consolidation requests: %w", ctx.Err())
+		}
+		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 {
+			return nil
 		}
 
-		if n, err := st.NumPendingConsolidations(); err != nil {
-			return err
-		} else if n >= params.BeaconConfig().PendingConsolidationsLimit {
-			return errors.New("pending consolidations queue is full")
+		srcIdx, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(cr.SourcePubkey))
+		if !ok {
+			continue
+		}
+		tgtIdx, ok := st.ValidatorIndexByPubkey(bytesutil.ToBytes48(cr.TargetPubkey))
+		if !ok {
+			continue
 		}
 
-		if c.Message.SourceIndex == c.Message.TargetIndex {
-			return errors.New("source and target index are the same")
+		if srcIdx == tgtIdx {
+			continue
 		}
-		source, err := st.ValidatorAtIndex(c.Message.SourceIndex)
+
+		srcV, err := st.ValidatorAtIndex(srcIdx)
 		if err != nil {
-			return err
-		}
-		target, err := st.ValidatorAtIndex(c.Message.TargetIndex)
-		if err != nil {
-			return err
-		}
-		if !helpers.IsActiveValidator(source, currentEpoch) {
-			return errors.New("source is not active")
-		}
-		if !helpers.IsActiveValidator(target, currentEpoch) {
-			return errors.New("target is not active")
-		}
-		if source.ExitEpoch != params.BeaconConfig().FarFutureEpoch {
-			return errors.New("source exit epoch has been initiated")
-		}
-		if target.ExitEpoch != params.BeaconConfig().FarFutureEpoch {
-			return errors.New("target exit epoch has been initiated")
-		}
-		if currentEpoch < c.Message.Epoch {
-			return errors.New("consolidation is not valid yet")
+			return fmt.Errorf("failed to fetch source validator: %w", err) // This should never happen.
 		}
 
-		if !helpers.HasExecutionWithdrawalCredentials(source) {
-			return errors.New("source does not have execution withdrawal credentials")
-		}
-		if !helpers.HasExecutionWithdrawalCredentials(target) {
-			return errors.New("target does not have execution withdrawal credentials")
-		}
-		if !helpers.IsSameWithdrawalCredentials(source, target) {
-			return errors.New("source and target have different withdrawal credentials")
+		tgtV, err := st.ValidatorAtIndexReadOnly(tgtIdx)
+		if err != nil {
+			return fmt.Errorf("failed to fetch target validator: %w", err) // This should never happen.
 		}
 
-		sr, err := signing.ComputeSigningRoot(c.Message, domain)
-		if err != nil {
-			return err
+		// Verify source withdrawal credentials
+		if !helpers.HasExecutionWithdrawalCredentials(srcV) {
+			continue
 		}
-		sourcePk, err := bls.PublicKeyFromBytes(source.PublicKey)
-		if err != nil {
-			return errors.Wrap(err, "could not convert source public key bytes to bls public key")
-		}
-		targetPk, err := bls.PublicKeyFromBytes(target.PublicKey)
-		if err != nil {
-			return errors.Wrap(err, "could not convert target public key bytes to bls public key")
-		}
-		sig, err := bls.SignatureFromBytes(c.Signature)
-		if err != nil {
-			return errors.Wrap(err, "could not convert bytes to signature")
-		}
-		if !sig.FastAggregateVerify([]bls.PublicKey{sourcePk, targetPk}, sr) {
-			return errors.New("consolidation signature verification failed")
+		// 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
 		}
 
-		sEE, err := ComputeConsolidationEpochAndUpdateChurn(ctx, st, primitives.Gwei(source.EffectiveBalance))
+		// Target validator must have their withdrawal credentials set appropriately.
+		if !helpers.HasExecutionWithdrawalCredentials(tgtV) {
+			continue
+		}
+
+		// Both validators must be active.
+		if !helpers.IsActiveValidator(srcV, curEpoch) || !helpers.IsActiveValidatorUsingTrie(tgtV, curEpoch) {
+			continue
+		}
+		// Neither validator are exiting.
+		if srcV.ExitEpoch != ffe || tgtV.ExitEpoch() != ffe {
+			continue
+		}
+
+		// Initiate the exit of the source validator.
+		exitEpoch, err := ComputeConsolidationEpochAndUpdateChurn(ctx, st, primitives.Gwei(srcV.EffectiveBalance))
 		if err != nil {
-			return err
+			return fmt.Errorf("failed to compute consolidaiton epoch: %w", err)
 		}
-		source.ExitEpoch = sEE
-		source.WithdrawableEpoch = sEE + params.BeaconConfig().MinValidatorWithdrawabilityDelay
-		if err := st.UpdateValidatorAtIndex(c.Message.SourceIndex, source); err != nil {
-			return err
+		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(c.Message.ToPendingConsolidation()); err != nil {
-			return err
+
+		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.
 		}
 	}
 

beacon-chain/core/electra/consolidations_test.go

@@ -5,19 +5,14 @@ import (
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
-	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/crypto/bls/blst"
-	"github.com/prysmaticlabs/prysm/v5/crypto/bls/common"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/v5/runtime/interop"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
 
 func TestProcessPendingConsolidations(t *testing.T) {
@@ -238,203 +233,197 @@ func stateWithActiveBalanceETH(t *testing.T, balETH uint64) state.BeaconState {
 	return st
 }
 
-func TestProcessConsolidations(t *testing.T) {
-	secretKeys, publicKeys, err := interop.DeterministicallyGenerateKeys(0, 2)
-	require.NoError(t, err)
-
-	genesisValidatorRoot := bytesutil.PadTo([]byte("genesisValidatorRoot"), fieldparams.RootLength)
-
-	_ = secretKeys
-
+func TestProcessConsolidationRequests(t *testing.T) {
 	tests := []struct {
-		name    string
-		state   state.BeaconState
-		scs     []*eth.SignedConsolidation
-		check   func(*testing.T, state.BeaconState)
-		wantErr string
+		name     string
+		state    state.BeaconState
+		reqs     []*enginev1.ConsolidationRequest
+		validate func(*testing.T, state.BeaconState)
 	}{
 		{
-			name:    "nil state",
-			scs:     make([]*eth.SignedConsolidation, 10),
-			wantErr: "nil state",
-		},
-		{
-			name:    "nil consolidation in slice",
-			state:   stateWithActiveBalanceETH(t, 19_000_000),
-			scs:     []*eth.SignedConsolidation{nil, nil},
-			wantErr: "nil consolidation",
-		},
-		{
-			name: "state is 100% full of pending consolidations",
+			name: "one valid request",
 			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				pc := make([]*eth.PendingConsolidation, params.BeaconConfig().PendingConsolidationsLimit)
-				require.NoError(t, st.SetPendingConsolidations(pc))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{}}},
-			wantErr: "pending consolidations queue is full",
-		},
-		{
-			name: "state has too little consolidation churn limit available to process a consolidation",
-			state: func() state.BeaconState {
-				st, _ := util.DeterministicGenesisStateElectra(t, 1)
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{}}},
-			wantErr: "too little available consolidation churn limit",
-		},
-		{
-			name:    "consolidation with source and target as the same index is rejected",
-			state:   stateWithActiveBalanceETH(t, 19_000_000),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 100}}},
-			wantErr: "source and target index are the same",
-		},
-		{
-			name: "consolidation with inactive source is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
+				st := &eth.BeaconStateElectra{
+					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(0)
+				st.Validators[9].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
+				st.Validators[12].ActivationEpoch = params.BeaconConfig().FarFutureEpoch
+				st.Validators[13].ExitEpoch = 10
+				st.Validators[16].ExitEpoch = 10
+				s, err := state_native.InitializeFromProtoElectra(st)
 				require.NoError(t, err)
-				val.ActivationEpoch = params.BeaconConfig().FarFutureEpoch
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
+				return s
 			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 25, TargetIndex: 100}}},
-			wantErr: "source is not active",
-		},
-		{
-			name: "consolidation with inactive target is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
+			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.
+				{
+					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"),
+				},
+				// 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)
-				val.ActivationEpoch = params.BeaconConfig().FarFutureEpoch
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25}}},
-			wantErr: "target is not active",
-		},
-		{
-			name: "consolidation with exiting source is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
+				require.Equal(t, uint64(1), numPC)
+				pcs, err := st.PendingConsolidations()
 				require.NoError(t, err)
-				val.ExitEpoch = 256
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 25, TargetIndex: 100}}},
-			wantErr: "source exit epoch has been initiated",
-		},
-		{
-			name: "consolidation with exiting target is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
-				require.NoError(t, err)
-				val.ExitEpoch = 256
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25}}},
-			wantErr: "target exit epoch has been initiated",
-		},
-		{
-			name:    "consolidation with future epoch is rejected",
-			state:   stateWithActiveBalanceETH(t, 19_000_000),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25, Epoch: 55}}},
-			wantErr: "consolidation is not valid yet",
-		},
-		{
-			name: "source validator without withdrawal credentials is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
-				require.NoError(t, err)
-				val.WithdrawalCredentials = []byte{}
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 25, TargetIndex: 100}}},
-			wantErr: "source does not have execution withdrawal credentials",
-		},
-		{
-			name: "target validator without withdrawal credentials is rejected",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				val, err := st.ValidatorAtIndex(25)
-				require.NoError(t, err)
-				val.WithdrawalCredentials = []byte{}
-				require.NoError(t, st.UpdateValidatorAtIndex(25, val))
-				return st
-			}(),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25}}},
-			wantErr: "target does not have execution withdrawal credentials",
-		},
-		{
-			name:    "source and target with different withdrawal credentials is rejected",
-			state:   stateWithActiveBalanceETH(t, 19_000_000),
-			scs:     []*eth.SignedConsolidation{{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25}}},
-			wantErr: "source and target have different withdrawal credentials",
-		},
-		{
-			name: "consolidation with valid signatures is OK",
-			state: func() state.BeaconState {
-				st := stateWithActiveBalanceETH(t, 19_000_000)
-				require.NoError(t, st.SetGenesisValidatorsRoot(genesisValidatorRoot))
-				source, err := st.ValidatorAtIndex(100)
-				require.NoError(t, err)
-				target, err := st.ValidatorAtIndex(25)
-				require.NoError(t, err)
-				source.PublicKey = publicKeys[0].Marshal()
-				source.WithdrawalCredentials = target.WithdrawalCredentials
-				require.NoError(t, st.UpdateValidatorAtIndex(100, source))
-				target.PublicKey = publicKeys[1].Marshal()
-				require.NoError(t, st.UpdateValidatorAtIndex(25, target))
-				return st
-			}(),
-			scs: func() []*eth.SignedConsolidation {
-				sc := &eth.SignedConsolidation{Message: &eth.Consolidation{SourceIndex: 100, TargetIndex: 25, Epoch: 8}}
+				require.Equal(t, primitives.ValidatorIndex(1), pcs[0].SourceIndex)
+				require.Equal(t, primitives.ValidatorIndex(2), pcs[0].TargetIndex)
 
-				domain, err := signing.ComputeDomain(
-					params.BeaconConfig().DomainConsolidation,
-					nil,
-					genesisValidatorRoot,
-				)
+				// Verify the source validator is exiting.
+				src, err := st.ValidatorAtIndex(1)
 				require.NoError(t, err)
-				sr, err := signing.ComputeSigningRoot(sc.Message, domain)
+				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)
-
-				sig0 := secretKeys[0].Sign(sr[:])
-				sig1 := secretKeys[1].Sign(sr[:])
-
-				sc.Signature = blst.AggregateSignatures([]common.Signature{sig0, sig1}).Marshal()
-
-				return []*eth.SignedConsolidation{sc}
+				return s
 			}(),
-			check: func(t *testing.T, st state.BeaconState) {
-				source, err := st.ValidatorAtIndex(100)
+			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)
-				// The consolidated validator is exiting.
-				require.Equal(t, primitives.Epoch(15), source.ExitEpoch) // 15 = state.Epoch(10) + MIN_SEED_LOOKAHEAD(4) + 1
-				require.Equal(t, primitives.Epoch(15+params.BeaconConfig().MinValidatorWithdrawabilityDelay), source.WithdrawableEpoch)
+				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{
+					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")
 			},
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			err := electra.ProcessConsolidations(context.TODO(), tt.state, tt.scs)
-			if len(tt.wantErr) > 0 {
-				require.ErrorContains(t, tt.wantErr, err)
-			} else {
-				require.NoError(t, err)
-			}
-			if tt.check != nil {
-				tt.check(t, tt.state)
+			err := electra.ProcessConsolidationRequests(context.TODO(), tt.state, tt.reqs)
+			require.NoError(t, err)
+			if tt.validate != nil {
+				tt.validate(t, tt.state)
 			}
 		})
 	}

beacon-chain/core/electra/deposit_fuzz_test.go

@@ -0,0 +1,48 @@
+package electra_test
+
+import (
+	"context"
+	"testing"
+
+	fuzz "github.com/google/gofuzz"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestFuzzProcessDeposits_10000(t *testing.T) {
+	fuzzer := fuzz.NewWithSeed(0)
+	state := &ethpb.BeaconStateElectra{}
+	deposits := make([]*ethpb.Deposit, 100)
+	ctx := context.Background()
+	for i := 0; i < 10000; i++ {
+		fuzzer.Fuzz(state)
+		for i := range deposits {
+			fuzzer.Fuzz(deposits[i])
+		}
+		s, err := state_native.InitializeFromProtoUnsafeElectra(state)
+		require.NoError(t, err)
+		r, err := electra.ProcessDeposits(ctx, s, deposits)
+		if err != nil && r != nil {
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposits)
+		}
+	}
+}
+
+func TestFuzzProcessDeposit_10000(t *testing.T) {
+	fuzzer := fuzz.NewWithSeed(0)
+	state := &ethpb.BeaconStateElectra{}
+	deposit := &ethpb.Deposit{}
+
+	for i := 0; i < 10000; i++ {
+		fuzzer.Fuzz(state)
+		fuzzer.Fuzz(deposit)
+		s, err := state_native.InitializeFromProtoUnsafeElectra(state)
+		require.NoError(t, err)
+		r, err := electra.ProcessDeposit(s, deposit, true)
+		if err != nil && r != nil {
+			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and block: %v", r, err, state, deposit)
+		}
+	}
+}

beacon-chain/core/electra/deposits.go

@@ -2,15 +2,189 @@ package electra
 
 import (
 	"context"
-	"errors"
+	"fmt"
 
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/contracts/deposit"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
+	log "github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
 )
 
+// ProcessDeposits is one of the operations performed on each processed
+// beacon block to verify queued validators from the Ethereum 1.0 Deposit Contract
+// into the beacon chain.
+//
+// Spec pseudocode definition:
+//
+//	For each deposit in block.body.deposits:
+//	  process_deposit(state, deposit)
+func ProcessDeposits(
+	ctx context.Context,
+	beaconState state.BeaconState,
+	deposits []*ethpb.Deposit,
+) (state.BeaconState, error) {
+	ctx, span := trace.StartSpan(ctx, "electra.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.
+	batchVerified, err := blocks.BatchVerifyDepositsSignatures(ctx, deposits)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not verify deposit signatures in batch")
+	}
+
+	for _, d := range deposits {
+		if d == nil || d.Data == nil {
+			return nil, errors.New("got a nil deposit in block")
+		}
+		beaconState, err = ProcessDeposit(beaconState, d, batchVerified)
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not process deposit from %#x", bytesutil.Trunc(d.Data.PublicKey))
+		}
+	}
+	return beaconState, nil
+}
+
+// ProcessDeposit takes in a deposit object and inserts it
+// into the registry as a new validator or balance change.
+// Returns the resulting state, a boolean to indicate whether or not the deposit
+// resulted in a new validator entry into the beacon state, and any error.
+//
+// Spec pseudocode definition:
+// def process_deposit(state: BeaconState, deposit: Deposit) -> None:
+//
+//	# Verify the Merkle branch
+//	assert is_valid_merkle_branch(
+//		leaf=hash_tree_root(deposit.data),
+//		branch=deposit.proof,
+//		depth=DEPOSIT_CONTRACT_TREE_DEPTH + 1,  # Add 1 for the List length mix-in
+//		index=state.eth1_deposit_index,
+//		root=state.eth1_data.deposit_root,
+//	)
+//
+//	 # Deposits must be processed in order
+//	 state.eth1_deposit_index += 1
+//
+//	 apply_deposit(
+//	  state=state,
+//	  pubkey=deposit.data.pubkey,
+//	  withdrawal_credentials=deposit.data.withdrawal_credentials,
+//	  amount=deposit.data.amount,
+//	  signature=deposit.data.signature,
+//	 )
+func ProcessDeposit(beaconState state.BeaconState, deposit *ethpb.Deposit, verifySignature bool) (state.BeaconState, error) {
+	if err := blocks.VerifyDeposit(beaconState, deposit); err != nil {
+		if deposit == nil || deposit.Data == nil {
+			return nil, err
+		}
+		return nil, errors.Wrapf(err, "could not verify deposit from %#x", bytesutil.Trunc(deposit.Data.PublicKey))
+	}
+	if err := beaconState.SetEth1DepositIndex(beaconState.Eth1DepositIndex() + 1); err != nil {
+		return nil, err
+	}
+	return ApplyDeposit(beaconState, deposit.Data, verifySignature)
+}
+
+// ApplyDeposit
+// def apply_deposit(state: BeaconState, pubkey: BLSPubkey, withdrawal_credentials: Bytes32, amount: uint64, signature: BLSSignature) -> None:
+// validator_pubkeys = [v.pubkey for v in state.validators]
+// if pubkey not in validator_pubkeys:
+//
+//	# Verify the deposit signature (proof of possession) which is not checked by the deposit contract
+//	if is_valid_deposit_signature(pubkey, withdrawal_credentials, amount, signature):
+//	  add_validator_to_registry(state, pubkey, withdrawal_credentials, amount)
+//
+// else:
+//
+//	# Increase balance by deposit amount
+//	index = ValidatorIndex(validator_pubkeys.index(pubkey))
+//	state.pending_balance_deposits.append(PendingBalanceDeposit(index=index, amount=amount))  # [Modified in Electra:EIP-7251]
+//	# Check if valid deposit switch to compounding credentials
+//
+// if ( is_compounding_withdrawal_credential(withdrawal_credentials) and has_eth1_withdrawal_credential(state.validators[index])
+//
+//	 and is_valid_deposit_signature(pubkey, withdrawal_credentials, amount, signature)
+//	):
+//	 switch_to_compounding_validator(state, index)
+func ApplyDeposit(beaconState state.BeaconState, data *ethpb.Deposit_Data, verifySignature bool) (state.BeaconState, error) {
+	pubKey := data.PublicKey
+	amount := data.Amount
+	withdrawalCredentials := data.WithdrawalCredentials
+	index, ok := beaconState.ValidatorIndexByPubkey(bytesutil.ToBytes48(pubKey))
+	if !ok {
+		if verifySignature {
+			valid, err := IsValidDepositSignature(data)
+			if err != nil {
+				return nil, errors.Wrap(err, "could not verify deposit signature")
+			}
+			if !valid {
+				return beaconState, nil
+			}
+		}
+		if err := AddValidatorToRegistry(beaconState, pubKey, withdrawalCredentials, amount); err != nil {
+			return nil, errors.Wrap(err, "could not add validator to registry")
+		}
+	} else {
+		// no validation on top-ups (phase0 feature). no validation before state change
+		if err := beaconState.AppendPendingBalanceDeposit(index, amount); err != nil {
+			return nil, err
+		}
+		val, err := beaconState.ValidatorAtIndex(index)
+		if err != nil {
+			return nil, err
+		}
+		if helpers.IsCompoundingWithdrawalCredential(withdrawalCredentials) && helpers.HasETH1WithdrawalCredential(val) {
+			if verifySignature {
+				valid, err := IsValidDepositSignature(data)
+				if err != nil {
+					return nil, errors.Wrap(err, "could not verify deposit signature")
+				}
+				if !valid {
+					return beaconState, nil
+				}
+			}
+			if err := SwitchToCompoundingValidator(beaconState, index); err != nil {
+				return nil, errors.Wrap(err, "could not switch to compound validator")
+			}
+		}
+	}
+	return beaconState, nil
+}
+
+// IsValidDepositSignature returns whether deposit_data is valid
+// def is_valid_deposit_signature(pubkey: BLSPubkey, withdrawal_credentials: Bytes32, amount: uint64, signature: BLSSignature) -> bool:
+//
+//	deposit_message = DepositMessage( pubkey=pubkey, withdrawal_credentials=withdrawal_credentials, amount=amount, )
+//	domain = compute_domain(DOMAIN_DEPOSIT)  # Fork-agnostic domain since deposits are valid across forks
+//	signing_root = compute_signing_root(deposit_message, domain)
+//	return bls.Verify(pubkey, signing_root, signature)
+func IsValidDepositSignature(data *ethpb.Deposit_Data) (bool, error) {
+	domain, err := signing.ComputeDomain(params.BeaconConfig().DomainDeposit, nil, nil)
+	if err != nil {
+		return false, err
+	}
+	if err := verifyDepositDataSigningRoot(data, domain); err != nil {
+		// Ignore this error as in the spec pseudo code.
+		log.WithError(err).Debug("Skipping deposit: could not verify deposit data signature")
+		return false, nil
+	}
+	return true, nil
+}
+
+func verifyDepositDataSigningRoot(obj *ethpb.Deposit_Data, domain []byte) error {
+	return deposit.VerifyDepositSignature(obj, domain)
+}
+
 // ProcessPendingBalanceDeposits implements the spec definition below. This method mutates the state.
 //
 // Spec definition:
@@ -19,12 +193,27 @@ import (
 //	    available_for_processing = state.deposit_balance_to_consume + get_activation_exit_churn_limit(state)
 //	    processed_amount = 0
 //	    next_deposit_index = 0
+//	    deposits_to_postpone = []
 //
 //	    for deposit in state.pending_balance_deposits:
-//	        if processed_amount + deposit.amount > available_for_processing:
-//	            break
-//	        increase_balance(state, deposit.index, deposit.amount)
-//	        processed_amount += deposit.amount
+//	        validator = state.validators[deposit.index]
+//	        # Validator is exiting, postpone the deposit until after withdrawable epoch
+//	        if validator.exit_epoch < FAR_FUTURE_EPOCH:
+//	            if get_current_epoch(state) <= validator.withdrawable_epoch:
+//	                deposits_to_postpone.append(deposit)
+//	            # Deposited balance will never become active. Increase balance but do not consume churn
+//	            else:
+//	                increase_balance(state, deposit.index, deposit.amount)
+//	        # Validator is not exiting, attempt to process deposit
+//	        else:
+//	            # Deposit does not fit in the churn, no more deposit processing in this epoch.
+//	            if processed_amount + deposit.amount > available_for_processing:
+//	                break
+//	            # Deposit fits in the churn, process it. Increase balance and consume churn.
+//	            else:
+//	                increase_balance(state, deposit.index, deposit.amount)
+//	                processed_amount += deposit.amount
+//	        # Regardless of how the deposit was handled, we move on in the queue.
 //	        next_deposit_index += 1
 //
 //	    state.pending_balance_deposits = state.pending_balance_deposits[next_deposit_index:]
@@ -33,6 +222,8 @@ import (
 //	        state.deposit_balance_to_consume = Gwei(0)
 //	    else:
 //	        state.deposit_balance_to_consume = available_for_processing - processed_amount
+//
+//	    state.pending_balance_deposits += deposits_to_postpone
 func ProcessPendingBalanceDeposits(ctx context.Context, st state.BeaconState, activeBalance primitives.Gwei) error {
 	_, span := trace.StartSpan(ctx, "electra.ProcessPendingBalanceDeposits")
 	defer span.End()
@@ -45,43 +236,136 @@ func ProcessPendingBalanceDeposits(ctx context.Context, st state.BeaconState, ac
 	if err != nil {
 		return err
 	}
-
 	availableForProcessing := depBalToConsume + helpers.ActivationExitChurnLimit(activeBalance)
+	processedAmount := uint64(0)
 	nextDepositIndex := 0
+	var depositsToPostpone []*eth.PendingBalanceDeposit
 
 	deposits, err := st.PendingBalanceDeposits()
 	if err != nil {
 		return err
 	}
 
-	for _, deposit := range deposits {
-		if primitives.Gwei(deposit.Amount) > availableForProcessing {
-			break
+	// constants
+	ffe := params.BeaconConfig().FarFutureEpoch
+	nextEpoch := slots.ToEpoch(st.Slot()) + 1
+
+	for _, balanceDeposit := range deposits {
+		v, err := st.ValidatorAtIndexReadOnly(balanceDeposit.Index)
+		if err != nil {
+			return fmt.Errorf("failed to fetch validator at index: %w", err)
 		}
-		if err := helpers.IncreaseBalance(st, deposit.Index, deposit.Amount); err != nil {
-			return err
+
+		// If the validator is currently exiting, postpone the deposit until after the withdrawable
+		// epoch.
+		if v.ExitEpoch() < ffe {
+			if nextEpoch <= v.WithdrawableEpoch() {
+				depositsToPostpone = append(depositsToPostpone, balanceDeposit)
+			} else {
+				// The deposited balance will never become active. Therefore, we increase the balance but do
+				// not consume the churn.
+				if err := helpers.IncreaseBalance(st, balanceDeposit.Index, balanceDeposit.Amount); err != nil {
+					return err
+				}
+			}
+		} else {
+			// Validator is not exiting, attempt to process deposit.
+			if primitives.Gwei(processedAmount+balanceDeposit.Amount) > availableForProcessing {
+				break
+			}
+			// Deposit fits in churn, process it. Increase balance and consume churn.
+			if err := helpers.IncreaseBalance(st, balanceDeposit.Index, balanceDeposit.Amount); err != nil {
+				return err
+			}
+			processedAmount += balanceDeposit.Amount
 		}
-		availableForProcessing -= primitives.Gwei(deposit.Amount)
+
+		// Regardless of how the deposit was handled, we move on in the queue.
 		nextDepositIndex++
 	}
 
-	deposits = deposits[nextDepositIndex:]
+	// Combined operation:
+	// - state.pending_balance_deposits = state.pending_balance_deposits[next_deposit_index:]
+	// - state.pending_balance_deposits += deposits_to_postpone
+	// However, the number of remaining deposits must be maintained to properly update the deposit
+	// balance to consume.
+	numRemainingDeposits := len(deposits[nextDepositIndex:])
+	deposits = append(deposits[nextDepositIndex:], depositsToPostpone...)
 	if err := st.SetPendingBalanceDeposits(deposits); err != nil {
 		return err
 	}
 
-	if len(deposits) == 0 {
+	if numRemainingDeposits == 0 {
 		return st.SetDepositBalanceToConsume(0)
 	} else {
-		return st.SetDepositBalanceToConsume(availableForProcessing)
+		return st.SetDepositBalanceToConsume(availableForProcessing - primitives.Gwei(processedAmount))
 	}
 }
 
 // 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")
+	ctx, span := trace.StartSpan(ctx, "electra.ProcessDepositRequests")
 	defer span.End()
-	// TODO: replace with 6110 logic
-	// return b.ProcessDepositRequests(beaconState, requests)
+
+	if len(requests) == 0 {
+		return beaconState, nil
+	}
+
+	deposits := make([]*ethpb.Deposit, 0)
+	for _, req := range requests {
+		if req == nil {
+			return nil, errors.New("got a nil DepositRequest")
+		}
+		deposits = append(deposits, &ethpb.Deposit{
+			Data: &ethpb.Deposit_Data{
+				PublicKey:             req.Pubkey,
+				WithdrawalCredentials: req.WithdrawalCredentials,
+				Amount:                req.Amount,
+				Signature:             req.Signature,
+			},
+		})
+	}
+	batchVerified, err := blocks.BatchVerifyDepositsSignatures(ctx, deposits)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not verify deposit signatures in batch")
+	}
+	for _, receipt := range requests {
+		beaconState, err = processDepositRequest(beaconState, receipt, batchVerified)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not apply deposit request")
+		}
+	}
 	return beaconState, nil
 }
+
+// processDepositRequest processes the specific deposit receipt
+// def process_deposit_request(state: BeaconState, deposit_request: DepositRequest) -> None:
+//
+//	# Set deposit request start index
+//	if state.deposit_requests_start_index == UNSET_DEPOSIT_REQUEST_START_INDEX:
+//	    state.deposit_requests_start_index = deposit_request.index
+//
+//	apply_deposit(
+//	    state=state,
+//	    pubkey=deposit_request.pubkey,
+//	    withdrawal_credentials=deposit_request.withdrawal_credentials,
+//	    amount=deposit_request.amount,
+//	    signature=deposit_request.signature,
+//	)
+func processDepositRequest(beaconState state.BeaconState, request *enginev1.DepositRequest, verifySignature bool) (state.BeaconState, error) {
+	requestsStartIndex, err := beaconState.DepositRequestsStartIndex()
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get deposit requests start index")
+	}
+	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")
+		}
+	}
+	return ApplyDeposit(beaconState, &ethpb.Deposit_Data{
+		PublicKey:             bytesutil.SafeCopyBytes(request.Pubkey),
+		Amount:                request.Amount,
+		WithdrawalCredentials: bytesutil.SafeCopyBytes(request.WithdrawalCredentials),
+		Signature:             bytesutil.SafeCopyBytes(request.Signature),
+	}, verifySignature)
+}

beacon-chain/core/electra/deposits_test.go

@@ -6,11 +6,18 @@ import (
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
 
 func TestProcessPendingBalanceDeposits(t *testing.T) {
@@ -100,6 +107,80 @@ func TestProcessPendingBalanceDeposits(t *testing.T) {
 					require.Equal(t, params.BeaconConfig().MinActivationBalance+uint64(amountAvailForProcessing)/5, b)
 				}
 
+				// All of the balance deposits should have been processed.
+				remaining, err := st.PendingBalanceDeposits()
+				require.NoError(t, err)
+				require.Equal(t, 0, len(remaining))
+			},
+		},
+		{
+			name: "exiting validator deposit postponed",
+			state: func() state.BeaconState {
+				st := stateWithActiveBalanceETH(t, 1_000)
+				require.NoError(t, st.SetDepositBalanceToConsume(0))
+				amountAvailForProcessing := helpers.ActivationExitChurnLimit(1_000 * 1e9)
+				deps := make([]*eth.PendingBalanceDeposit, 5)
+				for i := 0; i < len(deps); i += 1 {
+					deps[i] = &eth.PendingBalanceDeposit{
+						Amount: uint64(amountAvailForProcessing) / 5,
+						Index:  primitives.ValidatorIndex(i),
+					}
+				}
+				require.NoError(t, st.SetPendingBalanceDeposits(deps))
+				v, err := st.ValidatorAtIndex(0)
+				require.NoError(t, err)
+				v.ExitEpoch = 10
+				v.WithdrawableEpoch = 20
+				require.NoError(t, st.UpdateValidatorAtIndex(0, v))
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				amountAvailForProcessing := helpers.ActivationExitChurnLimit(1_000 * 1e9)
+				res, err := st.DepositBalanceToConsume()
+				require.NoError(t, err)
+				require.Equal(t, primitives.Gwei(0), res)
+				// Validators 1..4 should have their balance increased
+				for i := primitives.ValidatorIndex(1); i < 4; i++ {
+					b, err := st.BalanceAtIndex(i)
+					require.NoError(t, err)
+					require.Equal(t, params.BeaconConfig().MinActivationBalance+uint64(amountAvailForProcessing)/5, b)
+				}
+
+				// All of the balance deposits should have been processed, except validator index 0 was
+				// added back to the pending deposits queue.
+				remaining, err := st.PendingBalanceDeposits()
+				require.NoError(t, err)
+				require.Equal(t, 1, len(remaining))
+			},
+		},
+		{
+			name: "exited validator balance increased",
+			state: func() state.BeaconState {
+				st := stateWithActiveBalanceETH(t, 1_000)
+				deps := make([]*eth.PendingBalanceDeposit, 1)
+				for i := 0; i < len(deps); i += 1 {
+					deps[i] = &eth.PendingBalanceDeposit{
+						Amount: 1_000_000,
+						Index:  primitives.ValidatorIndex(i),
+					}
+				}
+				require.NoError(t, st.SetPendingBalanceDeposits(deps))
+				v, err := st.ValidatorAtIndex(0)
+				require.NoError(t, err)
+				v.ExitEpoch = 2
+				v.WithdrawableEpoch = 8
+				require.NoError(t, st.UpdateValidatorAtIndex(0, v))
+				require.NoError(t, st.UpdateBalancesAtIndex(0, 100_000))
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				res, err := st.DepositBalanceToConsume()
+				require.NoError(t, err)
+				require.Equal(t, primitives.Gwei(0), res)
+				b, err := st.BalanceAtIndex(0)
+				require.NoError(t, err)
+				require.Equal(t, uint64(1_100_000), b)
+
 				// All of the balance deposits should have been processed.
 				remaining, err := st.PendingBalanceDeposits()
 				require.NoError(t, err)
@@ -126,3 +207,194 @@ func TestProcessPendingBalanceDeposits(t *testing.T) {
 		})
 	}
 }
+
+func TestProcessDepositRequests(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, 1)
+	sk, err := bls.RandKey()
+	require.NoError(t, err)
+
+	t.Run("empty requests continues", func(t *testing.T) {
+		newSt, err := electra.ProcessDepositRequests(context.Background(), st, []*enginev1.DepositRequest{})
+		require.NoError(t, err)
+		require.DeepEqual(t, newSt, st)
+	})
+	t.Run("nil request errors", func(t *testing.T) {
+		_, err = electra.ProcessDepositRequests(context.Background(), st, []*enginev1.DepositRequest{nil})
+		require.ErrorContains(t, "got a nil DepositRequest", 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.SetPendingBalanceDeposits(make([]*eth.PendingBalanceDeposit, 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(context.Background(), st, requests)
+	require.NoError(t, err)
+
+	pbd, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 2, len(pbd))
+	require.Equal(t, uint64(1000), pbd[0].Amount)
+	require.Equal(t, uint64(2000), pbd[1].Amount)
+}
+
+func TestProcessDeposit_Electra_Simple(t *testing.T) {
+	deps, _, err := util.DeterministicDepositsAndKeysSameValidator(3)
+	require.NoError(t, err)
+	eth1Data, err := util.DeterministicEth1Data(len(deps))
+	require.NoError(t, err)
+	registry := []*eth.Validator{
+		{
+			PublicKey:             []byte{1},
+			WithdrawalCredentials: []byte{1, 2, 3},
+		},
+	}
+	balances := []uint64{0}
+	st, err := state_native.InitializeFromProtoElectra(&eth.BeaconStateElectra{
+		Validators: registry,
+		Balances:   balances,
+		Eth1Data:   eth1Data,
+		Fork: &eth.Fork{
+			PreviousVersion: params.BeaconConfig().ElectraForkVersion,
+			CurrentVersion:  params.BeaconConfig().ElectraForkVersion,
+		},
+	})
+	require.NoError(t, err)
+	pdSt, err := electra.ProcessDeposits(context.Background(), st, deps)
+	require.NoError(t, err)
+	pbd, err := pdSt.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().MinActivationBalance, pbd[2].Amount)
+	require.Equal(t, 3, len(pbd))
+}
+
+func TestProcessDeposit_SkipsInvalidDeposit(t *testing.T) {
+	// Same test settings as in TestProcessDeposit_AddsNewValidatorDeposit, except that we use an invalid signature
+	dep, _, err := util.DeterministicDepositsAndKeys(1)
+	require.NoError(t, err)
+	dep[0].Data.Signature = make([]byte, 96)
+	dt, _, err := util.DepositTrieFromDeposits(dep)
+	require.NoError(t, err)
+	root, err := dt.HashTreeRoot()
+	require.NoError(t, err)
+	eth1Data := &eth.Eth1Data{
+		DepositRoot:  root[:],
+		DepositCount: 1,
+	}
+	registry := []*eth.Validator{
+		{
+			PublicKey:             []byte{1},
+			WithdrawalCredentials: []byte{1, 2, 3},
+		},
+	}
+	balances := []uint64{0}
+	beaconState, err := state_native.InitializeFromProtoElectra(&eth.BeaconStateElectra{
+		Validators: registry,
+		Balances:   balances,
+		Eth1Data:   eth1Data,
+		Fork: &eth.Fork{
+			PreviousVersion: params.BeaconConfig().GenesisForkVersion,
+			CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
+		},
+	})
+	require.NoError(t, err)
+	newState, err := electra.ProcessDeposit(beaconState, dep[0], true)
+	require.NoError(t, err, "Expected invalid block deposit to be ignored without error")
+
+	if newState.Eth1DepositIndex() != 1 {
+		t.Errorf(
+			"Expected Eth1DepositIndex to be increased by 1 after processing an invalid deposit, received change: %v",
+			newState.Eth1DepositIndex(),
+		)
+	}
+	if len(newState.Validators()) != 1 {
+		t.Errorf("Expected validator list to have length 1, received: %v", len(newState.Validators()))
+	}
+	if len(newState.Balances()) != 1 {
+		t.Errorf("Expected validator balances list to have length 1, received: %v", len(newState.Balances()))
+	}
+	if newState.Balances()[0] != 0 {
+		t.Errorf("Expected validator balance at index 0 to stay 0, received: %v", newState.Balances()[0])
+	}
+}
+
+func TestApplyDeposit_TopUps_WithBadSignature(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, 3)
+	sk, err := bls.RandKey()
+	require.NoError(t, err)
+	withdrawalCred := make([]byte, 32)
+	withdrawalCred[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
+	topUpAmount := uint64(1234)
+	depositData := &eth.Deposit_Data{
+		PublicKey:             sk.PublicKey().Marshal(),
+		Amount:                topUpAmount,
+		WithdrawalCredentials: withdrawalCred,
+		Signature:             make([]byte, fieldparams.BLSSignatureLength),
+	}
+	vals := st.Validators()
+	vals[0].PublicKey = sk.PublicKey().Marshal()
+	vals[0].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+	require.NoError(t, st.SetValidators(vals))
+	adSt, err := electra.ApplyDeposit(st, depositData, true)
+	require.NoError(t, err)
+	pbd, err := adSt.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 1, len(pbd))
+	require.Equal(t, topUpAmount, pbd[0].Amount)
+}
+
+func TestApplyDeposit_Electra_SwitchToCompoundingValidator(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, 3)
+	sk, err := bls.RandKey()
+	require.NoError(t, err)
+	withdrawalCred := make([]byte, 32)
+	withdrawalCred[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
+	depositData := &eth.Deposit_Data{
+		PublicKey:             sk.PublicKey().Marshal(),
+		Amount:                1000,
+		WithdrawalCredentials: withdrawalCred,
+		Signature:             make([]byte, fieldparams.BLSSignatureLength),
+	}
+	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))
+	sr, err := signing.ComputeSigningRoot(depositData, bytesutil.ToBytes(3, 32))
+	require.NoError(t, err)
+	sig := sk.Sign(sr[:])
+	depositData.Signature = sig.Marshal()
+	adSt, err := electra.ApplyDeposit(st, depositData, false)
+	require.NoError(t, err)
+	pbd, err := adSt.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 2, len(pbd))
+	require.Equal(t, uint64(1000), pbd[0].Amount)
+	require.Equal(t, uint64(2000), pbd[1].Amount)
+}

beacon-chain/core/electra/effective_balance_updates.go

@@ -56,7 +56,7 @@ func ProcessEffectiveBalanceUpdates(state state.BeaconState) error {
 		if balance+downwardThreshold < val.EffectiveBalance || val.EffectiveBalance+upwardThreshold < balance {
 			effectiveBal := min(balance-balance%effBalanceInc, effectiveBalanceLimit)
 			val.EffectiveBalance = effectiveBal
-			return false, val, nil
+			return true, val, nil
 		}
 		return false, val, nil
 	}

beacon-chain/core/electra/registry_updates.go

@@ -2,12 +2,19 @@ package electra
 
 import (
 	"context"
+	"errors"
+	"fmt"
 
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/validators"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 )
 
-// ProcessRegistryUpdates rotates validators in and out of active pool.
-// the amount to rotate is determined churn limit.
+// ProcessRegistryUpdates processes all validators eligible for the activation queue, all validators
+// which should be ejected, and all validators which are eligible for activation from the queue.
 //
 // Spec pseudocode definition:
 //
@@ -28,7 +35,72 @@ import (
 //	         for validator in state.validators:
 //	             if is_eligible_for_activation(state, validator):
 //	                 validator.activation_epoch = activation_epoch
-func ProcessRegistryUpdates(ctx context.Context, state state.BeaconState) (state.BeaconState, error) {
-	// TODO: replace with real implementation
-	return state, nil
+func ProcessRegistryUpdates(ctx context.Context, st state.BeaconState) error {
+	currentEpoch := time.CurrentEpoch(st)
+	ejectionBal := params.BeaconConfig().EjectionBalance
+	activationEpoch := helpers.ActivationExitEpoch(currentEpoch)
+
+	// To avoid copying the state validator set via st.Validators(), we will perform a read only pass
+	// over the validator set while collecting validator indices where the validator copy is actually
+	// necessary, then we will process these operations.
+	eligibleForActivationQ := make([]primitives.ValidatorIndex, 0)
+	eligibleForEjection := make([]primitives.ValidatorIndex, 0)
+	eligibleForActivation := make([]primitives.ValidatorIndex, 0)
+
+	if err := st.ReadFromEveryValidator(func(idx int, val state.ReadOnlyValidator) error {
+		// Collect validators eligible to enter the activation queue.
+		if helpers.IsEligibleForActivationQueue(val, currentEpoch) {
+			eligibleForActivationQ = append(eligibleForActivationQ, primitives.ValidatorIndex(idx))
+		}
+
+		// Collect validators to eject.
+		if val.EffectiveBalance() <= ejectionBal && helpers.IsActiveValidatorUsingTrie(val, currentEpoch) {
+			eligibleForEjection = append(eligibleForEjection, primitives.ValidatorIndex(idx))
+		}
+
+		// Collect validators eligible for activation and not yet dequeued for activation.
+		if helpers.IsEligibleForActivationUsingROVal(st, val) {
+			eligibleForActivation = append(eligibleForActivation, primitives.ValidatorIndex(idx))
+		}
+
+		return nil
+	}); err != nil {
+		return fmt.Errorf("failed to read validators: %w", err)
+	}
+
+	// Handle validators eligible to join the activation queue.
+	for _, idx := range eligibleForActivationQ {
+		v, err := st.ValidatorAtIndex(idx)
+		if err != nil {
+			return err
+		}
+		v.ActivationEligibilityEpoch = currentEpoch + 1
+		if err := st.UpdateValidatorAtIndex(idx, v); err != nil {
+			return fmt.Errorf("failed to updated eligible validator at index %d: %w", idx, err)
+		}
+	}
+
+	// Handle validator ejections.
+	for _, idx := range eligibleForEjection {
+		var err error
+		// exitQueueEpoch and churn arguments are not used in electra.
+		st, _, err = validators.InitiateValidatorExit(ctx, st, idx, 0 /*exitQueueEpoch*/, 0 /*churn*/)
+		if err != nil && !errors.Is(err, validators.ErrValidatorAlreadyExited) {
+			return fmt.Errorf("failed to initiate validator exit at index %d: %w", idx, err)
+		}
+	}
+
+	for _, idx := range eligibleForActivation {
+		// Activate all eligible validators.
+		v, err := st.ValidatorAtIndex(idx)
+		if err != nil {
+			return err
+		}
+		v.ActivationEpoch = activationEpoch
+		if err := st.UpdateValidatorAtIndex(idx, v); err != nil {
+			return fmt.Errorf("failed to activate validator at index %d: %w", idx, err)
+		}
+	}
+
+	return nil
 }

beacon-chain/core/electra/registry_updates_test.go

@@ -0,0 +1,171 @@
+package electra_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+)
+
+func TestProcessRegistryUpdates(t *testing.T) {
+	finalizedEpoch := primitives.Epoch(4)
+
+	tests := []struct {
+		name  string
+		state state.BeaconState
+		check func(*testing.T, state.BeaconState)
+	}{
+		{
+			name: "No rotation",
+			state: func() state.BeaconState {
+				base := &eth.BeaconStateElectra{
+					Slot: 5 * params.BeaconConfig().SlotsPerEpoch,
+					Validators: []*eth.Validator{
+						{ExitEpoch: params.BeaconConfig().MaxSeedLookahead},
+						{ExitEpoch: params.BeaconConfig().MaxSeedLookahead},
+					},
+					Balances: []uint64{
+						params.BeaconConfig().MaxEffectiveBalance,
+						params.BeaconConfig().MaxEffectiveBalance,
+					},
+					FinalizedCheckpoint: &eth.Checkpoint{Root: make([]byte, fieldparams.RootLength)},
+				}
+				st, err := state_native.InitializeFromProtoElectra(base)
+				require.NoError(t, err)
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				for i, val := range st.Validators() {
+					require.Equal(t, params.BeaconConfig().MaxSeedLookahead, val.ExitEpoch, "validator updated unexpectedly at index %d", i)
+				}
+			},
+		},
+		{
+			name: "Validators are activated",
+			state: func() state.BeaconState {
+				base := &eth.BeaconStateElectra{
+					Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
+					FinalizedCheckpoint: &eth.Checkpoint{Epoch: finalizedEpoch, Root: make([]byte, fieldparams.RootLength)},
+				}
+				for i := uint64(0); i < 10; i++ {
+					base.Validators = append(base.Validators, &eth.Validator{
+						ActivationEligibilityEpoch: finalizedEpoch,
+						EffectiveBalance:           params.BeaconConfig().MaxEffectiveBalance,
+						ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
+					})
+				}
+				st, err := state_native.InitializeFromProtoElectra(base)
+				require.NoError(t, err)
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				activationEpoch := helpers.ActivationExitEpoch(5)
+				// All validators should be activated.
+				for i, val := range st.Validators() {
+					require.Equal(t, activationEpoch, val.ActivationEpoch, "failed to update validator at index %d", i)
+				}
+			},
+		},
+		{
+			name: "Validators are exited",
+			state: func() state.BeaconState {
+				base := &eth.BeaconStateElectra{
+					Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
+					FinalizedCheckpoint: &eth.Checkpoint{Epoch: finalizedEpoch, Root: make([]byte, fieldparams.RootLength)},
+				}
+				for i := uint64(0); i < 10; i++ {
+					base.Validators = append(base.Validators, &eth.Validator{
+						EffectiveBalance:  params.BeaconConfig().EjectionBalance - 1,
+						ExitEpoch:         params.BeaconConfig().FarFutureEpoch,
+						WithdrawableEpoch: params.BeaconConfig().FarFutureEpoch,
+					})
+				}
+				st, err := state_native.InitializeFromProtoElectra(base)
+				require.NoError(t, err)
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				// All validators should be exited
+				for i, val := range st.Validators() {
+					require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, val.ExitEpoch, "failed to update exit epoch on validator %d", i)
+					require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, val.WithdrawableEpoch, "failed to update withdrawable epoch on validator %d", i)
+				}
+			},
+		},
+		{
+			name: "Validators are exiting",
+			state: func() state.BeaconState {
+				base := &eth.BeaconStateElectra{
+					Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
+					FinalizedCheckpoint: &eth.Checkpoint{Epoch: finalizedEpoch, Root: make([]byte, fieldparams.RootLength)},
+				}
+				for i := uint64(0); i < 10; i++ {
+					base.Validators = append(base.Validators, &eth.Validator{
+						EffectiveBalance:  params.BeaconConfig().EjectionBalance - 1,
+						ExitEpoch:         10,
+						WithdrawableEpoch: 20,
+					})
+				}
+				st, err := state_native.InitializeFromProtoElectra(base)
+				require.NoError(t, err)
+				return st
+			}(),
+			check: func(t *testing.T, st state.BeaconState) {
+				// All validators should be exited
+				for i, val := range st.Validators() {
+					require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, val.ExitEpoch, "failed to update exit epoch on validator %d", i)
+					require.NotEqual(t, params.BeaconConfig().FarFutureEpoch, val.WithdrawableEpoch, "failed to update withdrawable epoch on validator %d", i)
+				}
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := electra.ProcessRegistryUpdates(context.TODO(), tt.state)
+			require.NoError(t, err)
+			if tt.check != nil {
+				tt.check(t, tt.state)
+			}
+		})
+	}
+}
+
+func Benchmark_ProcessRegistryUpdates_MassEjection(b *testing.B) {
+	bal := params.BeaconConfig().EjectionBalance - 1
+	ffe := params.BeaconConfig().FarFutureEpoch
+	genValidators := func(num uint64) []*eth.Validator {
+		vals := make([]*eth.Validator, num)
+		for i := range vals {
+			vals[i] = &eth.Validator{
+				EffectiveBalance: bal,
+				ExitEpoch:        ffe,
+			}
+		}
+		return vals
+	}
+
+	st, err := util.NewBeaconStateElectra()
+	require.NoError(b, err)
+
+	for i := 0; i < b.N; i++ {
+		b.StopTimer()
+		if err := st.SetValidators(genValidators(100000)); err != nil {
+			panic(err)
+		}
+		b.StartTimer()
+
+		if err := electra.ProcessRegistryUpdates(context.TODO(), st); err != nil {
+			panic(err)
+		}
+	}
+}

beacon-chain/core/electra/transition.go

@@ -2,12 +2,15 @@ package electra
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
 	e "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epoch/precompute"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"go.opencensus.io/trace"
 )
@@ -74,8 +77,7 @@ func ProcessEpoch(ctx context.Context, state state.BeaconState) error {
 		return errors.Wrap(err, "could not process rewards and penalties")
 	}
 
-	state, err = ProcessRegistryUpdates(ctx, state)
-	if err != nil {
+	if err := ProcessRegistryUpdates(ctx, state); err != nil {
 		return errors.Wrap(err, "could not process registry updates")
 	}
 
@@ -127,3 +129,33 @@ func ProcessEpoch(ctx context.Context, state state.BeaconState) error {
 
 	return nil
 }
+
+// VerifyBlockDepositLength
+//
+// Spec definition:
+//
+//	# [Modified in Electra:EIP6110]
+//	  # Disable former deposit mechanism once all prior deposits are processed
+//	  eth1_deposit_index_limit = min(state.eth1_data.deposit_count, state.deposit_requests_start_index)
+//	  if state.eth1_deposit_index < eth1_deposit_index_limit:
+//	      assert len(body.deposits) == min(MAX_DEPOSITS, eth1_deposit_index_limit - state.eth1_deposit_index)
+//	  else:
+//	      assert len(body.deposits) == 0
+func VerifyBlockDepositLength(body interfaces.ReadOnlyBeaconBlockBody, state state.BeaconState) error {
+	eth1Data := state.Eth1Data()
+	requestsStartIndex, err := state.DepositRequestsStartIndex()
+	if err != nil {
+		return errors.Wrap(err, "failed to get requests start index")
+	}
+	eth1DepositIndexLimit := min(eth1Data.DepositCount, requestsStartIndex)
+	if state.Eth1DepositIndex() < eth1DepositIndexLimit {
+		if uint64(len(body.Deposits())) != min(params.BeaconConfig().MaxDeposits, eth1DepositIndexLimit-state.Eth1DepositIndex()) {
+			return fmt.Errorf("incorrect outstanding deposits in block body, wanted: %d, got: %d", min(params.BeaconConfig().MaxDeposits, eth1DepositIndexLimit-state.Eth1DepositIndex()), len(body.Deposits()))
+		}
+	} else {
+		if len(body.Deposits()) != 0 {
+			return fmt.Errorf("incorrect outstanding deposits in block body, wanted: %d, got: %d", 0, len(body.Deposits()))
+		}
+	}
+	return nil
+}

beacon-chain/core/electra/transition_no_verify_sig.go

@@ -0,0 +1,101 @@
+package electra
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	v "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/validators"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+)
+
+var (
+	ProcessBLSToExecutionChanges = blocks.ProcessBLSToExecutionChanges
+	ProcessVoluntaryExits        = blocks.ProcessVoluntaryExits
+	ProcessAttesterSlashings     = blocks.ProcessAttesterSlashings
+	ProcessProposerSlashings     = blocks.ProcessProposerSlashings
+)
+
+// ProcessOperations
+//
+// Spec definition:
+//
+//  def process_operations(state: BeaconState, body: BeaconBlockBody) -> None:
+//      # [Modified in Electra:EIP6110]
+//      # Disable former deposit mechanism once all prior deposits are processed
+//      eth1_deposit_index_limit = min(state.eth1_data.deposit_count, state.deposit_requests_start_index)
+//      if state.eth1_deposit_index < eth1_deposit_index_limit:
+//          assert len(body.deposits) == min(MAX_DEPOSITS, eth1_deposit_index_limit - state.eth1_deposit_index)
+//      else:
+//          assert len(body.deposits) == 0
+//
+//      def for_ops(operations: Sequence[Any], fn: Callable[[BeaconState, Any], None]) -> None:
+//          for operation in operations:
+//              fn(state, operation)
+//
+//      for_ops(body.proposer_slashings, process_proposer_slashing)
+//      for_ops(body.attester_slashings, process_attester_slashing)
+//      for_ops(body.attestations, process_attestation)  # [Modified in Electra:EIP7549]
+//      for_ops(body.deposits, process_deposit)  # [Modified in Electra:EIP7251]
+//      for_ops(body.voluntary_exits, process_voluntary_exit)  # [Modified in Electra:EIP7251]
+//      for_ops(body.bls_to_execution_changes, process_bls_to_execution_change)
+//      for_ops(body.execution_payload.deposit_requests, process_deposit_request)  # [New in Electra:EIP6110]
+//      # [New in Electra:EIP7002:EIP7251]
+//      for_ops(body.execution_payload.withdrawal_requests, process_withdrawal_request)
+//      # [New in Electra:EIP7251]
+//      for_ops(body.execution_payload.consolidation_requests, process_consolidation_request)
+
+func ProcessOperations(
+	ctx context.Context,
+	st state.BeaconState,
+	block interfaces.ReadOnlyBeaconBlock) (state.BeaconState, error) {
+	// 6110 validations are in VerifyOperationLengths
+	bb := block.Body()
+	// Electra extends the altair operations.
+	st, err := ProcessProposerSlashings(ctx, st, bb.ProposerSlashings(), v.SlashValidator)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process altair proposer slashing")
+	}
+	st, err = ProcessAttesterSlashings(ctx, st, bb.AttesterSlashings(), v.SlashValidator)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process altair attester slashing")
+	}
+	st, err = ProcessAttestationsNoVerifySignature(ctx, st, block)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process altair attestation")
+	}
+	if _, err := ProcessDeposits(ctx, st, bb.Deposits()); err != nil { // new in electra
+		return nil, errors.Wrap(err, "could not process altair deposit")
+	}
+	st, err = ProcessVoluntaryExits(ctx, st, bb.VoluntaryExits())
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process voluntary exits")
+	}
+	st, err = ProcessBLSToExecutionChanges(st, block)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process bls-to-execution changes")
+	}
+	// new in electra
+	e, err := bb.Execution()
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get execution data from block")
+	}
+	exe, ok := e.(interfaces.ExecutionDataElectra)
+	if !ok {
+		return nil, errors.New("could not cast execution data to electra execution data")
+	}
+	st, err = ProcessDepositRequests(ctx, st, exe.DepositRequests())
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process deposit receipts")
+	}
+	st, err = ProcessWithdrawalRequests(ctx, st, exe.WithdrawalRequests())
+	if err != nil {
+		return nil, errors.Wrap(err, "could not process execution layer withdrawal requests")
+	}
+	if err := ProcessConsolidationRequests(ctx, st, exe.ConsolidationRequests()); err != nil {
+		return nil, fmt.Errorf("could not process consolidation requests: %w", err)
+	}
+	return st, nil
+}

beacon-chain/core/electra/transition_test.go

@@ -0,0 +1,118 @@
+package electra_test
+
+import (
+	"context"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	consensusblocks "github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+)
+
+func TestVerifyOperationLengths_Electra(t *testing.T) {
+	t.Run("happy path", func(t *testing.T) {
+		s, _ := util.DeterministicGenesisStateElectra(t, 1)
+		sb, err := consensusblocks.NewSignedBeaconBlock(util.NewBeaconBlockElectra())
+		require.NoError(t, err)
+		require.NoError(t, electra.VerifyBlockDepositLength(sb.Block().Body(), s))
+	})
+	t.Run("eth1depositIndex less than eth1depositIndexLimit & number of deposits incorrect", func(t *testing.T) {
+		s, _ := util.DeterministicGenesisStateElectra(t, 1)
+		sb, err := consensusblocks.NewSignedBeaconBlock(util.NewBeaconBlockElectra())
+		require.NoError(t, err)
+		require.NoError(t, s.SetEth1DepositIndex(0))
+		require.NoError(t, s.SetDepositRequestsStartIndex(1))
+		err = electra.VerifyBlockDepositLength(sb.Block().Body(), s)
+		require.ErrorContains(t, "incorrect outstanding deposits in block body", err)
+	})
+	t.Run("eth1depositIndex more than eth1depositIndexLimit & number of deposits is not 0", func(t *testing.T) {
+		s, _ := util.DeterministicGenesisStateElectra(t, 1)
+		sb, err := consensusblocks.NewSignedBeaconBlock(util.NewBeaconBlockElectra())
+		require.NoError(t, err)
+		sb.SetDeposits([]*ethpb.Deposit{
+			{
+				Data: &ethpb.Deposit_Data{
+					PublicKey:             []byte{1, 2, 3},
+					Amount:                1000,
+					WithdrawalCredentials: make([]byte, common.AddressLength),
+					Signature:             []byte{4, 5, 6},
+				},
+			},
+		})
+		require.NoError(t, s.SetEth1DepositIndex(1))
+		require.NoError(t, s.SetDepositRequestsStartIndex(1))
+		err = electra.VerifyBlockDepositLength(sb.Block().Body(), s)
+		require.ErrorContains(t, "incorrect outstanding deposits in block body", err)
+	})
+}
+
+func TestProcessEpoch_CanProcessElectra(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	require.NoError(t, st.SetSlot(10*params.BeaconConfig().SlotsPerEpoch))
+	require.NoError(t, st.SetDepositBalanceToConsume(100))
+	amountAvailForProcessing := helpers.ActivationExitChurnLimit(1_000 * 1e9)
+	deps := make([]*ethpb.PendingBalanceDeposit, 20)
+	for i := 0; i < len(deps); i += 1 {
+		deps[i] = &ethpb.PendingBalanceDeposit{
+			Amount: uint64(amountAvailForProcessing) / 10,
+			Index:  primitives.ValidatorIndex(i),
+		}
+	}
+	require.NoError(t, st.SetPendingBalanceDeposits(deps))
+	require.NoError(t, st.SetPendingConsolidations([]*ethpb.PendingConsolidation{
+		{
+			SourceIndex: 2,
+			TargetIndex: 3,
+		},
+		{
+			SourceIndex: 0,
+			TargetIndex: 1,
+		},
+	}))
+	err := electra.ProcessEpoch(context.Background(), st)
+	require.NoError(t, err)
+	require.Equal(t, uint64(0), st.Slashings()[2], "Unexpected slashed balance")
+
+	b := st.Balances()
+	require.Equal(t, params.BeaconConfig().MaxValidatorsPerCommittee, uint64(len(b)))
+	require.Equal(t, uint64(44799839993), b[0])
+
+	s, err := st.InactivityScores()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().MaxValidatorsPerCommittee, uint64(len(s)))
+
+	p, err := st.PreviousEpochParticipation()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().MaxValidatorsPerCommittee, uint64(len(p)))
+
+	p, err = st.CurrentEpochParticipation()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().MaxValidatorsPerCommittee, uint64(len(p)))
+
+	sc, err := st.CurrentSyncCommittee()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().SyncCommitteeSize, uint64(len(sc.Pubkeys)))
+
+	sc, err = st.NextSyncCommittee()
+	require.NoError(t, err)
+	require.Equal(t, params.BeaconConfig().SyncCommitteeSize, uint64(len(sc.Pubkeys)))
+
+	res, err := st.DepositBalanceToConsume()
+	require.NoError(t, err)
+	require.Equal(t, primitives.Gwei(100), res)
+
+	// Half of the balance deposits should have been processed.
+	remaining, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 10, len(remaining))
+
+	num, err := st.NumPendingConsolidations()
+	require.NoError(t, err)
+	require.Equal(t, uint64(2), num)
+}

beacon-chain/core/electra/upgrade.go

@@ -244,25 +244,26 @@ func UpgradeToElectra(beaconState state.BeaconState) (state.BeaconState, error)
 		CurrentSyncCommittee:        currentSyncCommittee,
 		NextSyncCommittee:           nextSyncCommittee,
 		LatestExecutionPayloadHeader: &enginev1.ExecutionPayloadHeaderElectra{
-			ParentHash:             payloadHeader.ParentHash(),
-			FeeRecipient:           payloadHeader.FeeRecipient(),
-			StateRoot:              payloadHeader.StateRoot(),
-			ReceiptsRoot:           payloadHeader.ReceiptsRoot(),
-			LogsBloom:              payloadHeader.LogsBloom(),
-			PrevRandao:             payloadHeader.PrevRandao(),
-			BlockNumber:            payloadHeader.BlockNumber(),
-			GasLimit:               payloadHeader.GasLimit(),
-			GasUsed:                payloadHeader.GasUsed(),
-			Timestamp:              payloadHeader.Timestamp(),
-			ExtraData:              payloadHeader.ExtraData(),
-			BaseFeePerGas:          payloadHeader.BaseFeePerGas(),
-			BlockHash:              payloadHeader.BlockHash(),
-			TransactionsRoot:       txRoot,
-			WithdrawalsRoot:        wdRoot,
-			ExcessBlobGas:          excessBlobGas,
-			BlobGasUsed:            blobGasUsed,
-			DepositRequestsRoot:    bytesutil.Bytes32(0), // [New in Electra:EIP6110]
-			WithdrawalRequestsRoot: bytesutil.Bytes32(0), // [New in Electra:EIP7002]
+			ParentHash:                payloadHeader.ParentHash(),
+			FeeRecipient:              payloadHeader.FeeRecipient(),
+			StateRoot:                 payloadHeader.StateRoot(),
+			ReceiptsRoot:              payloadHeader.ReceiptsRoot(),
+			LogsBloom:                 payloadHeader.LogsBloom(),
+			PrevRandao:                payloadHeader.PrevRandao(),
+			BlockNumber:               payloadHeader.BlockNumber(),
+			GasLimit:                  payloadHeader.GasLimit(),
+			GasUsed:                   payloadHeader.GasUsed(),
+			Timestamp:                 payloadHeader.Timestamp(),
+			ExtraData:                 payloadHeader.ExtraData(),
+			BaseFeePerGas:             payloadHeader.BaseFeePerGas(),
+			BlockHash:                 payloadHeader.BlockHash(),
+			TransactionsRoot:          txRoot,
+			WithdrawalsRoot:           wdRoot,
+			ExcessBlobGas:             excessBlobGas,
+			BlobGasUsed:               blobGasUsed,
+			DepositRequestsRoot:       bytesutil.Bytes32(0), // [New in Electra:EIP6110]
+			WithdrawalRequestsRoot:    bytesutil.Bytes32(0), // [New in Electra:EIP7002]
+			ConsolidationRequestsRoot: bytesutil.Bytes32(0), // [New in Electra:EIP7251]
 		},
 		NextWithdrawalIndex:          wi,
 		NextWithdrawalValidatorIndex: vi,
@@ -295,14 +296,14 @@ func UpgradeToElectra(beaconState state.BeaconState) (state.BeaconState, error)
 	}
 
 	for _, index := range preActivationIndices {
-		if err := helpers.QueueEntireBalanceAndResetValidator(post, index); err != nil {
+		if err := QueueEntireBalanceAndResetValidator(post, index); err != nil {
 			return nil, errors.Wrap(err, "failed to queue entire balance and reset validator")
 		}
 	}
 
 	// Ensure early adopters of compounding credentials go through the activation churn
 	for _, index := range compoundWithdrawalIndices {
-		if err := helpers.QueueExcessActiveBalance(post, index); err != nil {
+		if err := QueueExcessActiveBalance(post, index); err != nil {
 			return nil, errors.Wrap(err, "failed to queue excess active balance")
 		}
 	}

beacon-chain/core/electra/upgrade_test.go

@@ -113,23 +113,24 @@ func TestUpgradeToElectra(t *testing.T) {
 	wdRoot, err := prevHeader.WithdrawalsRoot()
 	require.NoError(t, err)
 	wanted := &enginev1.ExecutionPayloadHeaderElectra{
-		ParentHash:             prevHeader.ParentHash(),
-		FeeRecipient:           prevHeader.FeeRecipient(),
-		StateRoot:              prevHeader.StateRoot(),
-		ReceiptsRoot:           prevHeader.ReceiptsRoot(),
-		LogsBloom:              prevHeader.LogsBloom(),
-		PrevRandao:             prevHeader.PrevRandao(),
-		BlockNumber:            prevHeader.BlockNumber(),
-		GasLimit:               prevHeader.GasLimit(),
-		GasUsed:                prevHeader.GasUsed(),
-		Timestamp:              prevHeader.Timestamp(),
-		ExtraData:              prevHeader.ExtraData(),
-		BaseFeePerGas:          prevHeader.BaseFeePerGas(),
-		BlockHash:              prevHeader.BlockHash(),
-		TransactionsRoot:       txRoot,
-		WithdrawalsRoot:        wdRoot,
-		DepositRequestsRoot:    bytesutil.Bytes32(0),
-		WithdrawalRequestsRoot: bytesutil.Bytes32(0),
+		ParentHash:                prevHeader.ParentHash(),
+		FeeRecipient:              prevHeader.FeeRecipient(),
+		StateRoot:                 prevHeader.StateRoot(),
+		ReceiptsRoot:              prevHeader.ReceiptsRoot(),
+		LogsBloom:                 prevHeader.LogsBloom(),
+		PrevRandao:                prevHeader.PrevRandao(),
+		BlockNumber:               prevHeader.BlockNumber(),
+		GasLimit:                  prevHeader.GasLimit(),
+		GasUsed:                   prevHeader.GasUsed(),
+		Timestamp:                 prevHeader.Timestamp(),
+		ExtraData:                 prevHeader.ExtraData(),
+		BaseFeePerGas:             prevHeader.BaseFeePerGas(),
+		BlockHash:                 prevHeader.BlockHash(),
+		TransactionsRoot:          txRoot,
+		WithdrawalsRoot:           wdRoot,
+		DepositRequestsRoot:       bytesutil.Bytes32(0),
+		WithdrawalRequestsRoot:    bytesutil.Bytes32(0),
+		ConsolidationRequestsRoot: bytesutil.Bytes32(0),
 	}
 	require.DeepEqual(t, wanted, protoHeader)
 

beacon-chain/core/electra/validator.go

@@ -1,15 +1,80 @@
 package electra
 
 import (
-	"context"
 	"errors"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )
 
+// AddValidatorToRegistry updates the beacon state with validator information
+// def add_validator_to_registry(state: BeaconState,
+//
+//	                          pubkey: BLSPubkey,
+//	                          withdrawal_credentials: Bytes32,
+//	                          amount: uint64) -> None:
+//	index = get_index_for_new_validator(state)
+//	validator = get_validator_from_deposit(pubkey, withdrawal_credentials)
+//	set_or_append_list(state.validators, index, validator)
+//	set_or_append_list(state.balances, index, 0)  # [Modified in Electra:EIP7251]
+//	set_or_append_list(state.previous_epoch_participation, index, ParticipationFlags(0b0000_0000))
+//	set_or_append_list(state.current_epoch_participation, index, ParticipationFlags(0b0000_0000))
+//	set_or_append_list(state.inactivity_scores, index, uint64(0))
+//	state.pending_balance_deposits.append(PendingBalanceDeposit(index=index, amount=amount))  # [New in Electra:EIP7251]
+func AddValidatorToRegistry(beaconState state.BeaconState, pubKey []byte, withdrawalCredentials []byte, amount uint64) error {
+	val := ValidatorFromDeposit(pubKey, withdrawalCredentials)
+	if err := beaconState.AppendValidator(val); err != nil {
+		return err
+	}
+	index, ok := beaconState.ValidatorIndexByPubkey(bytesutil.ToBytes48(pubKey))
+	if !ok {
+		return errors.New("could not find validator in registry")
+	}
+	if err := beaconState.AppendBalance(0); err != nil {
+		return err
+	}
+	if err := beaconState.AppendPendingBalanceDeposit(index, amount); err != nil {
+		return err
+	}
+	if err := beaconState.AppendInactivityScore(0); err != nil {
+		return err
+	}
+	if err := beaconState.AppendPreviousParticipationBits(0); err != nil {
+		return err
+	}
+	return beaconState.AppendCurrentParticipationBits(0)
+}
+
+// ValidatorFromDeposit gets a new validator object with provided parameters
+//
+// def get_validator_from_deposit(pubkey: BLSPubkey, withdrawal_credentials: Bytes32) -> Validator:
+//
+//	return Validator(
+//	pubkey=pubkey,
+//	withdrawal_credentials=withdrawal_credentials,
+//	activation_eligibility_epoch=FAR_FUTURE_EPOCH,
+//	activation_epoch=FAR_FUTURE_EPOCH,
+//	exit_epoch=FAR_FUTURE_EPOCH,
+//	withdrawable_epoch=FAR_FUTURE_EPOCH,
+//	effective_balance=0,  # [Modified in Electra:EIP7251]
+//
+// )
+func ValidatorFromDeposit(pubKey []byte, withdrawalCredentials []byte) *ethpb.Validator {
+	return &ethpb.Validator{
+		PublicKey:                  pubKey,
+		WithdrawalCredentials:      withdrawalCredentials,
+		ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
+		ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
+		ExitEpoch:                  params.BeaconConfig().FarFutureEpoch,
+		WithdrawableEpoch:          params.BeaconConfig().FarFutureEpoch,
+		EffectiveBalance:           0, // [Modified in Electra:EIP7251]
+	}
+}
+
 // SwitchToCompoundingValidator
 //
 // Spec definition:
@@ -19,7 +84,7 @@ import (
 //		if has_eth1_withdrawal_credential(validator):
 //		    validator.withdrawal_credentials = COMPOUNDING_WITHDRAWAL_PREFIX + validator.withdrawal_credentials[1:]
 //		    queue_excess_active_balance(state, index)
-func SwitchToCompoundingValidator(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
+func SwitchToCompoundingValidator(s state.BeaconState, idx primitives.ValidatorIndex) error {
 	v, err := s.ValidatorAtIndex(idx)
 	if err != nil {
 		return err
@@ -32,12 +97,12 @@ func SwitchToCompoundingValidator(ctx context.Context, s state.BeaconState, idx
 		if err := s.UpdateValidatorAtIndex(idx, v); err != nil {
 			return err
 		}
-		return queueExcessActiveBalance(ctx, s, idx)
+		return QueueExcessActiveBalance(s, idx)
 	}
 	return nil
 }
 
-// queueExcessActiveBalance
+// QueueExcessActiveBalance queues validators with balances above the min activation balance and adds to pending balance deposit.
 //
 // Spec definition:
 //
@@ -49,7 +114,7 @@ func SwitchToCompoundingValidator(ctx context.Context, s state.BeaconState, idx
 //	        state.pending_balance_deposits.append(
 //	            PendingBalanceDeposit(index=index, amount=excess_balance)
 //	        )
-func queueExcessActiveBalance(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
+func QueueExcessActiveBalance(s state.BeaconState, idx primitives.ValidatorIndex) error {
 	bal, err := s.BalanceAtIndex(idx)
 	if err != nil {
 		return err
@@ -80,7 +145,7 @@ func queueExcessActiveBalance(ctx context.Context, s state.BeaconState, idx prim
 //	    )
 //
 //nolint:dupword
-func QueueEntireBalanceAndResetValidator(ctx context.Context, s state.BeaconState, idx primitives.ValidatorIndex) error {
+func QueueEntireBalanceAndResetValidator(s state.BeaconState, idx primitives.ValidatorIndex) error {
 	bal, err := s.BalanceAtIndex(idx)
 	if err != nil {
 		return err

beacon-chain/core/electra/validator_test.go

@@ -2,17 +2,32 @@ package electra_test
 
 import (
 	"bytes"
-	"context"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
 
+func TestAddValidatorToRegistry(t *testing.T) {
+	st, err := state_native.InitializeFromProtoElectra(&eth.BeaconStateElectra{})
+	require.NoError(t, err)
+	require.NoError(t, electra.AddValidatorToRegistry(st, make([]byte, fieldparams.BLSPubkeyLength), make([]byte, fieldparams.RootLength), 100))
+	balances := st.Balances()
+	require.Equal(t, 1, len(balances))
+	require.Equal(t, uint64(0), balances[0])
+	pbds, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 1, len(pbds))
+	require.Equal(t, uint64(100), pbds[0].Amount)
+	require.Equal(t, primitives.ValidatorIndex(0), pbds[0].Index)
+}
+
 func TestSwitchToCompoundingValidator(t *testing.T) {
 	s, err := state_native.InitializeFromProtoElectra(&eth.BeaconStateElectra{
 		Validators: []*eth.Validator{
@@ -34,10 +49,10 @@ func TestSwitchToCompoundingValidator(t *testing.T) {
 	})
 	// Test that a validator with no withdrawal credentials cannot be switched to compounding.
 	require.NoError(t, err)
-	require.ErrorContains(t, "validator has no withdrawal credentials", electra.SwitchToCompoundingValidator(context.TODO(), s, 0))
+	require.ErrorContains(t, "validator has no withdrawal credentials", electra.SwitchToCompoundingValidator(s, 0))
 
 	// Test that a validator with withdrawal credentials can be switched to compounding.
-	require.NoError(t, electra.SwitchToCompoundingValidator(context.TODO(), s, 1))
+	require.NoError(t, electra.SwitchToCompoundingValidator(s, 1))
 	v, err := s.ValidatorAtIndex(1)
 	require.NoError(t, err)
 	require.Equal(t, true, bytes.HasPrefix(v.WithdrawalCredentials, []byte{params.BeaconConfig().CompoundingWithdrawalPrefixByte}), "withdrawal credentials were not updated")
@@ -50,7 +65,7 @@ func TestSwitchToCompoundingValidator(t *testing.T) {
 	require.Equal(t, 0, len(pbd), "pending balance deposits should be empty")
 
 	// Test that a validator with excess balance can be switched to compounding, excess balance is queued.
-	require.NoError(t, electra.SwitchToCompoundingValidator(context.TODO(), s, 2))
+	require.NoError(t, electra.SwitchToCompoundingValidator(s, 2))
 	b, err = s.BalanceAtIndex(2)
 	require.NoError(t, err)
 	require.Equal(t, params.BeaconConfig().MinActivationBalance, b, "balance was not changed")
@@ -74,7 +89,7 @@ func TestQueueEntireBalanceAndResetValidator(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	require.NoError(t, electra.QueueEntireBalanceAndResetValidator(context.TODO(), s, 0))
+	require.NoError(t, electra.QueueEntireBalanceAndResetValidator(s, 0))
 	b, err := s.BalanceAtIndex(0)
 	require.NoError(t, err)
 	require.Equal(t, uint64(0), b, "balance was not changed")
@@ -88,3 +103,57 @@ func TestQueueEntireBalanceAndResetValidator(t *testing.T) {
 	require.Equal(t, params.BeaconConfig().MinActivationBalance+100_000, pbd[0].Amount, "pending balance deposit amount is incorrect")
 	require.Equal(t, primitives.ValidatorIndex(0), pbd[0].Index, "pending balance deposit index is incorrect")
 }
+
+func TestSwitchToCompoundingValidator_Ok(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	vals := st.Validators()
+	vals[0].WithdrawalCredentials = []byte{params.BeaconConfig().ETH1AddressWithdrawalPrefixByte}
+	require.NoError(t, st.SetValidators(vals))
+	bals := st.Balances()
+	bals[0] = params.BeaconConfig().MinActivationBalance + 1010
+	require.NoError(t, st.SetBalances(bals))
+	require.NoError(t, electra.SwitchToCompoundingValidator(st, 0))
+
+	pbd, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, uint64(1010), pbd[0].Amount) // appends it at the end
+	val, err := st.ValidatorAtIndex(0)
+	require.NoError(t, err)
+
+	bytes.HasPrefix(val.WithdrawalCredentials, []byte{params.BeaconConfig().CompoundingWithdrawalPrefixByte})
+}
+
+func TestQueueExcessActiveBalance_Ok(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	bals := st.Balances()
+	bals[0] = params.BeaconConfig().MinActivationBalance + 1000
+	require.NoError(t, st.SetBalances(bals))
+
+	err := electra.QueueExcessActiveBalance(st, 0)
+	require.NoError(t, err)
+
+	pbd, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, uint64(1000), pbd[0].Amount) // appends it at the end
+
+	bals = st.Balances()
+	require.Equal(t, params.BeaconConfig().MinActivationBalance, bals[0])
+}
+
+func TestQueueEntireBalanceAndResetValidator_Ok(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	// need to manually set this to 0 as after 6110 these balances are now 0 and instead populates pending balance deposits
+	bals := st.Balances()
+	bals[0] = params.BeaconConfig().MinActivationBalance - 1000
+	require.NoError(t, st.SetBalances(bals))
+	err := electra.QueueEntireBalanceAndResetValidator(st, 0)
+	require.NoError(t, err)
+
+	pbd, err := st.PendingBalanceDeposits()
+	require.NoError(t, err)
+	require.Equal(t, 1, len(pbd))
+	require.Equal(t, params.BeaconConfig().MinActivationBalance-1000, pbd[0].Amount)
+	bal, err := st.BalanceAtIndex(0)
+	require.NoError(t, err)
+	require.Equal(t, uint64(0), bal)
+}

beacon-chain/core/electra/withdrawals.go

@@ -26,66 +26,67 @@ import (
 //
 // def process_withdrawal_request(
 //
-//		state: BeaconState,
-//		withdrawal_request: WithdrawalRequest
+//	state: BeaconState,
+//	withdrawal_request: WithdrawalRequest
 //
-//	 ) -> None:
-//	   amount = execution_layer_withdrawal_request.amount
-//	   is_full_exit_request = amount == FULL_EXIT_REQUEST_AMOUNT
+// ) -> None:
 //
-//	   # If partial withdrawal queue is full, only full exits are processed
-//	   if len(state.pending_partial_withdrawals) == PENDING_PARTIAL_WITHDRAWALS_LIMIT and not is_full_exit_request:
-//	   return
+//	amount = withdrawal_request.amount
+//	is_full_exit_request = amount == FULL_EXIT_REQUEST_AMOUNT
 //
-//	   validator_pubkeys = [v.pubkey for v in state.validators]
-//	   # Verify pubkey exists
-//	   request_pubkey = execution_layer_withdrawal_request.validator_pubkey
-//	   if request_pubkey not in validator_pubkeys:
-//	   return
-//	   index = ValidatorIndex(validator_pubkeys.index(request_pubkey))
-//	   validator = state.validators[index]
+//	# If partial withdrawal queue is full, only full exits are processed
+//	if len(state.pending_partial_withdrawals) == PENDING_PARTIAL_WITHDRAWALS_LIMIT and not is_full_exit_request:
+//	    return
 //
-//	   # Verify withdrawal credentials
-//	   has_correct_credential = has_execution_withdrawal_credential(validator)
-//	   is_correct_source_address = (
-//	    validator.withdrawal_credentials[12:] == execution_layer_withdrawal_request.source_address
-//	   )
-//	   if not (has_correct_credential and is_correct_source_address):
-//	   return
-//	   # Verify the validator is active
-//	   if not is_active_validator(validator, get_current_epoch(state)):
-//	   return
-//	   # Verify exit has not been initiated
-//	   if validator.exit_epoch != FAR_FUTURE_EPOCH:
-//	   return
-//	   # Verify the validator has been active long enough
-//	   if get_current_epoch(state) < validator.activation_epoch + SHARD_COMMITTEE_PERIOD:
-//	   return
+//	validator_pubkeys = [v.pubkey for v in state.validators]
+//	# Verify pubkey exists
+//	request_pubkey = withdrawal_request.validator_pubkey
+//	if request_pubkey not in validator_pubkeys:
+//	    return
+//	index = ValidatorIndex(validator_pubkeys.index(request_pubkey))
+//	validator = state.validators[index]
 //
-//	   pending_balance_to_withdraw = get_pending_balance_to_withdraw(state, index)
+//	# Verify withdrawal credentials
+//	has_correct_credential = has_execution_withdrawal_credential(validator)
+//	is_correct_source_address = (
+//	    validator.withdrawal_credentials[12:] == withdrawal_request.source_address
+//	)
+//	if not (has_correct_credential and is_correct_source_address):
+//	    return
+//	# Verify the validator is active
+//	if not is_active_validator(validator, get_current_epoch(state)):
+//	    return
+//	# Verify exit has not been initiated
+//	if validator.exit_epoch != FAR_FUTURE_EPOCH:
+//	    return
+//	# Verify the validator has been active long enough
+//	if get_current_epoch(state) < validator.activation_epoch + SHARD_COMMITTEE_PERIOD:
+//	    return
 //
-//	   if is_full_exit_request:
-//	   # Only exit validator if it has no pending withdrawals in the queue
-//	   if pending_balance_to_withdraw == 0:
-//	   initiate_validator_exit(state, index)
-//	   return
+//	pending_balance_to_withdraw = get_pending_balance_to_withdraw(state, index)
 //
-//	   has_sufficient_effective_balance = validator.effective_balance >= MIN_ACTIVATION_BALANCE
-//	   has_excess_balance = state.balances[index] > MIN_ACTIVATION_BALANCE + pending_balance_to_withdraw
+//	if is_full_exit_request:
+//	    # Only exit validator if it has no pending withdrawals in the queue
+//	    if pending_balance_to_withdraw == 0:
+//	        initiate_validator_exit(state, index)
+//	    return
 //
-//	   # Only allow partial withdrawals with compounding withdrawal credentials
-//	   if has_compounding_withdrawal_credential(validator) and has_sufficient_effective_balance and has_excess_balance:
-//	   to_withdraw = min(
-//	   state.balances[index] - MIN_ACTIVATION_BALANCE - pending_balance_to_withdraw,
-//	    amount
-//	   )
-//	   exit_queue_epoch = compute_exit_epoch_and_update_churn(state, to_withdraw)
-//	   withdrawable_epoch = Epoch(exit_queue_epoch + MIN_VALIDATOR_WITHDRAWABILITY_DELAY)
-//	   state.pending_partial_withdrawals.append(PendingPartialWithdrawal(
-//	   index=index,
-//	   amount=to_withdraw,
-//	   withdrawable_epoch=withdrawable_epoch,
-//	   ))
+//	has_sufficient_effective_balance = validator.effective_balance >= MIN_ACTIVATION_BALANCE
+//	has_excess_balance = state.balances[index] > MIN_ACTIVATION_BALANCE + pending_balance_to_withdraw
+//
+//	# Only allow partial withdrawals with compounding withdrawal credentials
+//	if has_compounding_withdrawal_credential(validator) and has_sufficient_effective_balance and has_excess_balance:
+//	    to_withdraw = min(
+//	        state.balances[index] - MIN_ACTIVATION_BALANCE - pending_balance_to_withdraw,
+//	        amount
+//	    )
+//	    exit_queue_epoch = compute_exit_epoch_and_update_churn(state, to_withdraw)
+//	    withdrawable_epoch = Epoch(exit_queue_epoch + MIN_VALIDATOR_WITHDRAWABILITY_DELAY)
+//	    state.pending_partial_withdrawals.append(PendingPartialWithdrawal(
+//	        index=index,
+//	        amount=to_withdraw,
+//	        withdrawable_epoch=withdrawable_epoch,
+//	    ))
 func ProcessWithdrawalRequests(ctx context.Context, st state.BeaconState, wrs []*enginev1.WithdrawalRequest) (state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "electra.ProcessWithdrawalRequests")
 	defer span.End()

beacon-chain/core/electra/withdrawals_test.go

@@ -81,7 +81,6 @@ func TestProcessWithdrawRequests(t *testing.T) {
 				}))
 				_, err = wantPostSt.ExitEpochAndUpdateChurn(primitives.Gwei(v.EffectiveBalance))
 				require.NoError(t, err)
-				require.DeepEqual(t, wantPostSt.Validators(), got.Validators())
 				webc, err := wantPostSt.ExitBalanceToConsume()
 				require.NoError(t, err)
 				gebc, err := got.ExitBalanceToConsume()
@@ -110,10 +109,7 @@ func TestProcessWithdrawRequests(t *testing.T) {
 					prefix[0] = params.BeaconConfig().CompoundingWithdrawalPrefixByte
 					v.WithdrawalCredentials = append(prefix, source...)
 					require.NoError(t, preSt.SetValidators([]*eth.Validator{v}))
-					bal, err := preSt.BalanceAtIndex(0)
-					require.NoError(t, err)
-					bal += 200
-					require.NoError(t, preSt.SetBalances([]uint64{bal}))
+					require.NoError(t, preSt.SetBalances([]uint64{params.BeaconConfig().MinActivationBalance + 200}))
 					require.NoError(t, preSt.AppendPendingPartialWithdrawal(&eth.PendingPartialWithdrawal{
 						Index:             0,
 						Amount:            100,
@@ -168,7 +164,6 @@ func TestProcessWithdrawRequests(t *testing.T) {
 				require.Equal(t, wece, gece)
 				_, err = wantPostSt.ExitEpochAndUpdateChurn(primitives.Gwei(100))
 				require.NoError(t, err)
-				require.DeepEqual(t, wantPostSt.Validators(), got.Validators())
 				webc, err := wantPostSt.ExitBalanceToConsume()
 				require.NoError(t, err)
 				gebc, err := got.ExitBalanceToConsume()

beacon-chain/core/epoch/BUILD.bazel

@@ -2,7 +2,10 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
-    srcs = ["epoch_processing.go"],
+    srcs = [
+        "epoch_processing.go",
+        "sortable_indices.go",
+    ],
     importpath = "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epoch",
     visibility = [
         "//beacon-chain:__subpackages__",
@@ -19,7 +22,6 @@ go_library(
         "//consensus-types/primitives:go_default_library",
         "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
-        "//proto/prysm/v1alpha1/attestation:go_default_library",
         "//runtime/version:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
     ],
@@ -31,6 +33,7 @@ go_test(
     srcs = [
         "epoch_processing_fuzz_test.go",
         "epoch_processing_test.go",
+        "sortable_indices_test.go",
     ],
     embed = [":go_default_library"],
     deps = [
@@ -47,8 +50,8 @@ go_test(
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
+        "@com_github_google_go_cmp//cmp:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
-        "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )

beacon-chain/core/epoch/epoch_processing.go

@@ -20,53 +20,9 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/math"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1/attestation"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 )
 
-// sortableIndices implements the Sort interface to sort newly activated validator indices
-// by activation epoch and by index number.
-type sortableIndices struct {
-	indices    []primitives.ValidatorIndex
-	validators []*ethpb.Validator
-}
-
-// Len is the number of elements in the collection.
-func (s sortableIndices) Len() int { return len(s.indices) }
-
-// Swap swaps the elements with indexes i and j.
-func (s sortableIndices) Swap(i, j int) { s.indices[i], s.indices[j] = s.indices[j], s.indices[i] }
-
-// Less reports whether the element with index i must sort before the element with index j.
-func (s sortableIndices) Less(i, j int) bool {
-	if s.validators[s.indices[i]].ActivationEligibilityEpoch == s.validators[s.indices[j]].ActivationEligibilityEpoch {
-		return s.indices[i] < s.indices[j]
-	}
-	return s.validators[s.indices[i]].ActivationEligibilityEpoch < s.validators[s.indices[j]].ActivationEligibilityEpoch
-}
-
-// AttestingBalance returns the total balance from all the attesting indices.
-//
-// WARNING: This method allocates a new copy of the attesting validator indices set and is
-// considered to be very memory expensive. Avoid using this unless you really
-// need to get attesting balance from attestations.
-//
-// Spec pseudocode definition:
-//
-//	def get_attesting_balance(state: BeaconState, attestations: Sequence[PendingAttestation]) -> Gwei:
-//	  """
-//	  Return the combined effective balance of the set of unslashed validators participating in ``attestations``.
-//	  Note: ``get_total_balance`` returns ``EFFECTIVE_BALANCE_INCREMENT`` Gwei minimum to avoid divisions by zero.
-//	  """
-//	  return get_total_balance(state, get_unslashed_attesting_indices(state, attestations))
-func AttestingBalance(ctx context.Context, state state.ReadOnlyBeaconState, atts []*ethpb.PendingAttestation) (uint64, error) {
-	indices, err := UnslashedAttestingIndices(ctx, state, atts)
-	if err != nil {
-		return 0, errors.Wrap(err, "could not get attesting indices")
-	}
-	return helpers.TotalBalance(state, indices), nil
-}
-
 // ProcessRegistryUpdates rotates validators in and out of active pool.
 // the amount to rotate is determined churn limit.
 //
@@ -91,55 +47,78 @@ func AttestingBalance(ctx context.Context, state state.ReadOnlyBeaconState, atts
 //	 for index in activation_queue[:get_validator_churn_limit(state)]:
 //	     validator = state.validators[index]
 //	     validator.activation_epoch = compute_activation_exit_epoch(get_current_epoch(state))
-func ProcessRegistryUpdates(ctx context.Context, state state.BeaconState) (state.BeaconState, error) {
-	currentEpoch := time.CurrentEpoch(state)
-	vals := state.Validators()
+func ProcessRegistryUpdates(ctx context.Context, st state.BeaconState) (state.BeaconState, error) {
+	currentEpoch := time.CurrentEpoch(st)
 	var err error
 	ejectionBal := params.BeaconConfig().EjectionBalance
-	activationEligibilityEpoch := time.CurrentEpoch(state) + 1
-	for idx, validator := range vals {
-		// Process the validators for activation eligibility.
-		if helpers.IsEligibleForActivationQueue(validator, currentEpoch) {
-			validator.ActivationEligibilityEpoch = activationEligibilityEpoch
-			if err := state.UpdateValidatorAtIndex(primitives.ValidatorIndex(idx), validator); err != nil {
-				return nil, err
-			}
+
+	// To avoid copying the state validator set via st.Validators(), we will perform a read only pass
+	// over the validator set while collecting validator indices where the validator copy is actually
+	// necessary, then we will process these operations.
+	eligibleForActivationQ := make([]primitives.ValidatorIndex, 0)
+	eligibleForActivation := make([]primitives.ValidatorIndex, 0)
+	eligibleForEjection := make([]primitives.ValidatorIndex, 0)
+
+	if err := st.ReadFromEveryValidator(func(idx int, val state.ReadOnlyValidator) error {
+		// Collect validators eligible to enter the activation queue.
+		if helpers.IsEligibleForActivationQueue(val, currentEpoch) {
+			eligibleForActivationQ = append(eligibleForActivationQ, primitives.ValidatorIndex(idx))
 		}
 
-		// Process the validators for ejection.
-		isActive := helpers.IsActiveValidator(validator, currentEpoch)
-		belowEjectionBalance := validator.EffectiveBalance <= ejectionBal
+		// Collect validators to eject.
+		isActive := helpers.IsActiveValidatorUsingTrie(val, currentEpoch)
+		belowEjectionBalance := val.EffectiveBalance() <= ejectionBal
 		if isActive && belowEjectionBalance {
-			// Here is fine to do a quadratic loop since this should
-			// barely happen
-			maxExitEpoch, churn := validators.MaxExitEpochAndChurn(state)
-			state, _, err = validators.InitiateValidatorExit(ctx, state, primitives.ValidatorIndex(idx), maxExitEpoch, churn)
-			if err != nil && !errors.Is(err, validators.ErrValidatorAlreadyExited) {
-				return nil, errors.Wrapf(err, "could not initiate exit for validator %d", idx)
-			}
+			eligibleForEjection = append(eligibleForEjection, primitives.ValidatorIndex(idx))
+		}
+
+		// Collect validators eligible for activation and not yet dequeued for activation.
+		if helpers.IsEligibleForActivationUsingROVal(st, val) {
+			eligibleForActivation = append(eligibleForActivation, primitives.ValidatorIndex(idx))
+		}
+
+		return nil
+	}); err != nil {
+		return st, fmt.Errorf("failed to read validators: %w", err)
+	}
+
+	// Process validators for activation eligibility.
+	activationEligibilityEpoch := time.CurrentEpoch(st) + 1
+	for _, idx := range eligibleForActivationQ {
+		v, err := st.ValidatorAtIndex(idx)
+		if err != nil {
+			return nil, err
+		}
+		v.ActivationEligibilityEpoch = activationEligibilityEpoch
+		if err := st.UpdateValidatorAtIndex(idx, v); err != nil {
+			return nil, err
+		}
+	}
+
+	// Process validators eligible for ejection.
+	for _, idx := range eligibleForEjection {
+		// Here is fine to do a quadratic loop since this should
+		// barely happen
+		maxExitEpoch, churn := validators.MaxExitEpochAndChurn(st)
+		st, _, err = validators.InitiateValidatorExit(ctx, st, idx, maxExitEpoch, churn)
+		if err != nil && !errors.Is(err, validators.ErrValidatorAlreadyExited) {
+			return nil, errors.Wrapf(err, "could not initiate exit for validator %d", idx)
 		}
 	}
 
 	// Queue validators eligible for activation and not yet dequeued for activation.
-	var activationQ []primitives.ValidatorIndex
-	for idx, validator := range vals {
-		if helpers.IsEligibleForActivation(state, validator) {
-			activationQ = append(activationQ, primitives.ValidatorIndex(idx))
-		}
-	}
-
-	sort.Sort(sortableIndices{indices: activationQ, validators: vals})
+	sort.Sort(sortableIndices{indices: eligibleForActivation, state: st})
 
 	// Only activate just enough validators according to the activation churn limit.
-	limit := uint64(len(activationQ))
-	activeValidatorCount, err := helpers.ActiveValidatorCount(ctx, state, currentEpoch)
+	limit := uint64(len(eligibleForActivation))
+	activeValidatorCount, err := helpers.ActiveValidatorCount(ctx, st, currentEpoch)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get active validator count")
 	}
 
 	churnLimit := helpers.ValidatorActivationChurnLimit(activeValidatorCount)
 
-	if state.Version() >= version.Deneb {
+	if st.Version() >= version.Deneb {
 		churnLimit = helpers.ValidatorActivationChurnLimitDeneb(activeValidatorCount)
 	}
 
@@ -149,17 +128,17 @@ func ProcessRegistryUpdates(ctx context.Context, state state.BeaconState) (state
 	}
 
 	activationExitEpoch := helpers.ActivationExitEpoch(currentEpoch)
-	for _, index := range activationQ[:limit] {
-		validator, err := state.ValidatorAtIndex(index)
+	for _, index := range eligibleForActivation[:limit] {
+		validator, err := st.ValidatorAtIndex(index)
 		if err != nil {
 			return nil, err
 		}
 		validator.ActivationEpoch = activationExitEpoch
-		if err := state.UpdateValidatorAtIndex(index, validator); err != nil {
+		if err := st.UpdateValidatorAtIndex(index, validator); err != nil {
 			return nil, err
 		}
 	}
-	return state, nil
+	return st, nil
 }
 
 // ProcessSlashings processes the slashed validators during epoch processing,
@@ -453,51 +432,3 @@ func ProcessFinalUpdates(state state.BeaconState) (state.BeaconState, error) {
 
 	return state, nil
 }
-
-// UnslashedAttestingIndices returns all the attesting indices from a list of attestations,
-// it sorts the indices and filters out the slashed ones.
-//
-// Spec pseudocode definition:
-//
-//	def get_unslashed_attesting_indices(state: BeaconState,
-//	                                  attestations: Sequence[PendingAttestation]) -> Set[ValidatorIndex]:
-//	  output = set()  # type: Set[ValidatorIndex]
-//	  for a in attestations:
-//	      output = output.union(get_attesting_indices(state, a.data, a.aggregation_bits))
-//	  return set(filter(lambda index: not state.validators[index].slashed, output))
-func UnslashedAttestingIndices(ctx context.Context, state state.ReadOnlyBeaconState, atts []*ethpb.PendingAttestation) ([]primitives.ValidatorIndex, error) {
-	var setIndices []primitives.ValidatorIndex
-	seen := make(map[uint64]bool)
-
-	for _, att := range atts {
-		committee, err := helpers.BeaconCommitteeFromState(ctx, state, att.GetData().Slot, att.GetData().CommitteeIndex)
-		if err != nil {
-			return nil, err
-		}
-		attestingIndices, err := attestation.AttestingIndices(att, committee)
-		if err != nil {
-			return nil, err
-		}
-		// Create a set for attesting indices
-		for _, index := range attestingIndices {
-			if !seen[index] {
-				setIndices = append(setIndices, primitives.ValidatorIndex(index))
-			}
-			seen[index] = true
-		}
-	}
-	// Sort the attesting set indices by increasing order.
-	sort.Slice(setIndices, func(i, j int) bool { return setIndices[i] < setIndices[j] })
-	// Remove the slashed validator indices.
-	for i := 0; i < len(setIndices); i++ {
-		v, err := state.ValidatorAtIndexReadOnly(setIndices[i])
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to look up validator")
-		}
-		if !v.IsNil() && v.Slashed() {
-			setIndices = append(setIndices[:i], setIndices[i+1:]...)
-		}
-	}
-
-	return setIndices, nil
-}

beacon-chain/core/epoch/epoch_processing_test.go

@@ -6,7 +6,6 @@ import (
 	"math"
 	"testing"
 
-	"github.com/prysmaticlabs/go-bitfield"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
@@ -24,131 +23,6 @@ import (
 	"google.golang.org/protobuf/proto"
 )
 
-func TestUnslashedAttestingIndices_CanSortAndFilter(t *testing.T) {
-	// Generate 2 attestations.
-	atts := make([]*ethpb.PendingAttestation, 2)
-	for i := 0; i < len(atts); i++ {
-		atts[i] = &ethpb.PendingAttestation{
-			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)},
-				Target: &ethpb.Checkpoint{Epoch: 0, Root: make([]byte, fieldparams.RootLength)},
-			},
-			AggregationBits: bitfield.Bitlist{0x00, 0xFF, 0xFF, 0xFF},
-		}
-	}
-
-	// Generate validators and state for the 2 attestations.
-	validatorCount := 1000
-	validators := make([]*ethpb.Validator, validatorCount)
-	for i := 0; i < len(validators); i++ {
-		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-		}
-	}
-	base := &ethpb.BeaconState{
-		Validators:  validators,
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	}
-	beaconState, err := state_native.InitializeFromProtoPhase0(base)
-	require.NoError(t, err)
-
-	indices, err := epoch.UnslashedAttestingIndices(context.Background(), beaconState, atts)
-	require.NoError(t, err)
-	for i := 0; i < len(indices)-1; i++ {
-		if indices[i] >= indices[i+1] {
-			t.Error("sorted indices not sorted or duplicated")
-		}
-	}
-
-	// Verify the slashed validator is filtered.
-	slashedValidator := indices[0]
-	validators = beaconState.Validators()
-	validators[slashedValidator].Slashed = true
-	require.NoError(t, beaconState.SetValidators(validators))
-	indices, err = epoch.UnslashedAttestingIndices(context.Background(), beaconState, atts)
-	require.NoError(t, err)
-	for i := 0; i < len(indices); i++ {
-		assert.NotEqual(t, slashedValidator, indices[i], "Slashed validator %d is not filtered", slashedValidator)
-	}
-}
-
-func TestUnslashedAttestingIndices_DuplicatedAttestations(t *testing.T) {
-	// Generate 5 of the same attestations.
-	atts := make([]*ethpb.PendingAttestation, 5)
-	for i := 0; i < len(atts); i++ {
-		atts[i] = &ethpb.PendingAttestation{
-			Data: &ethpb.AttestationData{Source: &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)},
-				Target: &ethpb.Checkpoint{Epoch: 0}},
-			AggregationBits: bitfield.Bitlist{0x00, 0xFF, 0xFF, 0xFF},
-		}
-	}
-
-	// Generate validators and state for the 5 attestations.
-	validatorCount := 1000
-	validators := make([]*ethpb.Validator, validatorCount)
-	for i := 0; i < len(validators); i++ {
-		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
-		}
-	}
-	base := &ethpb.BeaconState{
-		Validators:  validators,
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-	}
-	beaconState, err := state_native.InitializeFromProtoPhase0(base)
-	require.NoError(t, err)
-
-	indices, err := epoch.UnslashedAttestingIndices(context.Background(), beaconState, atts)
-	require.NoError(t, err)
-
-	for i := 0; i < len(indices)-1; i++ {
-		if indices[i] >= indices[i+1] {
-			t.Error("sorted indices not sorted or duplicated")
-		}
-	}
-}
-
-func TestAttestingBalance_CorrectBalance(t *testing.T) {
-	helpers.ClearCache()
-	// Generate 2 attestations.
-	atts := make([]*ethpb.PendingAttestation, 2)
-	for i := 0; i < len(atts); i++ {
-		atts[i] = &ethpb.PendingAttestation{
-			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)},
-				Source: &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)},
-				Slot:   primitives.Slot(i),
-			},
-			AggregationBits: bitfield.Bitlist{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
-				0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x01},
-		}
-	}
-
-	// Generate validators with balances and state for the 2 attestations.
-	validators := make([]*ethpb.Validator, params.BeaconConfig().MinGenesisActiveValidatorCount)
-	balances := make([]uint64, params.BeaconConfig().MinGenesisActiveValidatorCount)
-	for i := 0; i < len(validators); i++ {
-		validators[i] = &ethpb.Validator{
-			ExitEpoch:        params.BeaconConfig().FarFutureEpoch,
-			EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance,
-		}
-		balances[i] = params.BeaconConfig().MaxEffectiveBalance
-	}
-	base := &ethpb.BeaconState{
-		Slot:        2,
-		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
-
-		Validators: validators,
-		Balances:   balances,
-	}
-	beaconState, err := state_native.InitializeFromProtoPhase0(base)
-	require.NoError(t, err)
-
-	balance, err := epoch.AttestingBalance(context.Background(), beaconState, atts)
-	require.NoError(t, err)
-	wanted := 256 * params.BeaconConfig().MaxEffectiveBalance
-	assert.Equal(t, wanted, balance)
-}
-
 func TestProcessSlashings_NotSlashed(t *testing.T) {
 	base := &ethpb.BeaconState{
 		Slot:       0,
@@ -307,14 +181,15 @@ func TestProcessRegistryUpdates_NoRotation(t *testing.T) {
 }
 
 func TestProcessRegistryUpdates_EligibleToActivate(t *testing.T) {
+	finalizedEpoch := primitives.Epoch(4)
 	base := &ethpb.BeaconState{
 		Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
-		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: 6, Root: make([]byte, fieldparams.RootLength)},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: finalizedEpoch, Root: make([]byte, fieldparams.RootLength)},
 	}
 	limit := helpers.ValidatorActivationChurnLimit(0)
 	for i := uint64(0); i < limit+10; i++ {
 		base.Validators = append(base.Validators, &ethpb.Validator{
-			ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
+			ActivationEligibilityEpoch: finalizedEpoch,
 			EffectiveBalance:           params.BeaconConfig().MaxEffectiveBalance,
 			ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
 		})
@@ -325,7 +200,6 @@ func TestProcessRegistryUpdates_EligibleToActivate(t *testing.T) {
 	newState, err := epoch.ProcessRegistryUpdates(context.Background(), beaconState)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
-		assert.Equal(t, currentEpoch+1, validator.ActivationEligibilityEpoch, "Could not update registry %d, unexpected activation eligibility epoch", i)
 		if uint64(i) < limit && validator.ActivationEpoch != helpers.ActivationExitEpoch(currentEpoch) {
 			t.Errorf("Could not update registry %d, validators failed to activate: wanted activation epoch %d, got %d",
 				i, helpers.ActivationExitEpoch(currentEpoch), validator.ActivationEpoch)
@@ -338,9 +212,10 @@ func TestProcessRegistryUpdates_EligibleToActivate(t *testing.T) {
 }
 
 func TestProcessRegistryUpdates_EligibleToActivate_Cancun(t *testing.T) {
+	finalizedEpoch := primitives.Epoch(4)
 	base := &ethpb.BeaconStateDeneb{
 		Slot:                5 * params.BeaconConfig().SlotsPerEpoch,
-		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: 6, Root: make([]byte, fieldparams.RootLength)},
+		FinalizedCheckpoint: &ethpb.Checkpoint{Epoch: finalizedEpoch, Root: make([]byte, fieldparams.RootLength)},
 	}
 	cfg := params.BeaconConfig()
 	cfg.MinPerEpochChurnLimit = 10
@@ -349,7 +224,7 @@ func TestProcessRegistryUpdates_EligibleToActivate_Cancun(t *testing.T) {
 
 	for i := uint64(0); i < 10; i++ {
 		base.Validators = append(base.Validators, &ethpb.Validator{
-			ActivationEligibilityEpoch: params.BeaconConfig().FarFutureEpoch,
+			ActivationEligibilityEpoch: finalizedEpoch,
 			EffectiveBalance:           params.BeaconConfig().MaxEffectiveBalance,
 			ActivationEpoch:            params.BeaconConfig().FarFutureEpoch,
 		})
@@ -360,7 +235,6 @@ func TestProcessRegistryUpdates_EligibleToActivate_Cancun(t *testing.T) {
 	newState, err := epoch.ProcessRegistryUpdates(context.Background(), beaconState)
 	require.NoError(t, err)
 	for i, validator := range newState.Validators() {
-		assert.Equal(t, currentEpoch+1, validator.ActivationEligibilityEpoch, "Could not update registry %d, unexpected activation eligibility epoch", i)
 		// Note: In Deneb, only validators indices before `MaxPerEpochActivationChurnLimit` should be activated.
 		if uint64(i) < params.BeaconConfig().MaxPerEpochActivationChurnLimit && validator.ActivationEpoch != helpers.ActivationExitEpoch(currentEpoch) {
 			t.Errorf("Could not update registry %d, validators failed to activate: wanted activation epoch %d, got %d",

beacon-chain/core/epoch/precompute/BUILD.bazel

@@ -47,7 +47,6 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//beacon-chain/core/altair:go_default_library",
-        "//beacon-chain/core/epoch:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/state:go_default_library",

beacon-chain/core/epoch/precompute/reward_penalty_test.go

@@ -6,7 +6,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/go-bitfield"
-	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
@@ -59,90 +58,6 @@ func TestProcessRewardsAndPenaltiesPrecompute(t *testing.T) {
 	assert.Equal(t, wanted, beaconState.Balances()[0], "Unexpected balance")
 }
 
-func TestAttestationDeltaPrecompute(t *testing.T) {
-	e := params.BeaconConfig().SlotsPerEpoch
-	validatorCount := uint64(2048)
-	base := buildState(e+2, validatorCount)
-	atts := make([]*ethpb.PendingAttestation, 3)
-	var emptyRoot [32]byte
-	for i := 0; i < len(atts); i++ {
-		atts[i] = &ethpb.PendingAttestation{
-			Data: &ethpb.AttestationData{
-				Target: &ethpb.Checkpoint{
-					Root: emptyRoot[:],
-				},
-				Source: &ethpb.Checkpoint{
-					Root: emptyRoot[:],
-				},
-				BeaconBlockRoot: emptyRoot[:],
-			},
-			AggregationBits: bitfield.Bitlist{0xC0, 0xC0, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x01},
-			InclusionDelay:  1,
-		}
-	}
-	base.PreviousEpochAttestations = atts
-	beaconState, err := state_native.InitializeFromProtoPhase0(base)
-	require.NoError(t, err)
-	slashedAttestedIndices := []primitives.ValidatorIndex{1413}
-	for _, i := range slashedAttestedIndices {
-		vs := beaconState.Validators()
-		vs[i].Slashed = true
-		require.Equal(t, nil, beaconState.SetValidators(vs))
-	}
-
-	vp, bp, err := New(context.Background(), beaconState)
-	require.NoError(t, err)
-	vp, bp, err = ProcessAttestations(context.Background(), beaconState, vp, bp)
-	require.NoError(t, err)
-
-	// Add some variances to target and head balances.
-	// See: https://github.com/prysmaticlabs/prysm/issues/5593
-	bp.PrevEpochTargetAttested /= 2
-	bp.PrevEpochHeadAttested = bp.PrevEpochHeadAttested * 2 / 3
-	rewards, penalties, err := AttestationsDelta(beaconState, bp, vp)
-	require.NoError(t, err)
-	attestedBalance, err := epoch.AttestingBalance(context.Background(), beaconState, atts)
-	require.NoError(t, err)
-	totalBalance, err := helpers.TotalActiveBalance(beaconState)
-	require.NoError(t, err)
-
-	attestedIndices := []primitives.ValidatorIndex{55, 1339, 1746, 1811, 1569}
-	for _, i := range attestedIndices {
-		base, err := baseReward(beaconState, i)
-		require.NoError(t, err, "Could not get base reward")
-
-		// Base rewards for getting source right
-		wanted := attestedBalance*base/totalBalance +
-			bp.PrevEpochTargetAttested*base/totalBalance +
-			bp.PrevEpochHeadAttested*base/totalBalance
-		// Base rewards for proposer and attesters working together getting attestation
-		// on chain in the fatest manner
-		proposerReward := base / params.BeaconConfig().ProposerRewardQuotient
-		wanted += (base-proposerReward)*uint64(params.BeaconConfig().MinAttestationInclusionDelay) - 1
-		assert.Equal(t, wanted, rewards[i], "Unexpected reward balance for validator with index %d", i)
-		// Since all these validators attested, they shouldn't get penalized.
-		assert.Equal(t, uint64(0), penalties[i], "Unexpected penalty balance")
-	}
-
-	for _, i := range slashedAttestedIndices {
-		base, err := baseReward(beaconState, i)
-		assert.NoError(t, err, "Could not get base reward")
-		assert.Equal(t, uint64(0), rewards[i], "Unexpected slashed indices reward balance")
-		assert.Equal(t, 3*base, penalties[i], "Unexpected slashed indices penalty balance")
-	}
-
-	nonAttestedIndices := []primitives.ValidatorIndex{434, 677, 872, 791}
-	for _, i := range nonAttestedIndices {
-		base, err := baseReward(beaconState, i)
-		assert.NoError(t, err, "Could not get base reward")
-		wanted := 3 * base
-		// Since all these validators did not attest, they shouldn't get rewarded.
-		assert.Equal(t, uint64(0), rewards[i], "Unexpected reward balance")
-		// Base penalties for not attesting.
-		assert.Equal(t, wanted, penalties[i], "Unexpected penalty balance")
-	}
-}
-
 func TestAttestationDeltas_ZeroEpoch(t *testing.T) {
 	e := params.BeaconConfig().SlotsPerEpoch
 	validatorCount := uint64(2048)

beacon-chain/core/epoch/precompute/type.go

@@ -24,7 +24,7 @@ type Validator struct {
 	IsPrevEpochSourceAttester bool
 	// IsPrevEpochTargetAttester is true if the validator attested previous epoch target.
 	IsPrevEpochTargetAttester bool
-	// IsHeadAttester is true if the validator attested head.
+	// IsPrevEpochHeadAttester is true if the validator attested the previous epoch head.
 	IsPrevEpochHeadAttester bool
 
 	// CurrentEpochEffectiveBalance is how much effective balance this validator has current epoch.

beacon-chain/core/epoch/sortable_indices.go

@@ -0,0 +1,35 @@
+package epoch
+
+import (
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+)
+
+// sortableIndices implements the Sort interface to sort newly activated validator indices
+// by activation epoch and by index number.
+type sortableIndices struct {
+	indices []primitives.ValidatorIndex
+	state   state.ReadOnlyValidators
+}
+
+// Len is the number of elements in the collection.
+func (s sortableIndices) Len() int { return len(s.indices) }
+
+// Swap swaps the elements with indexes i and j.
+func (s sortableIndices) Swap(i, j int) { s.indices[i], s.indices[j] = s.indices[j], s.indices[i] }
+
+// Less reports whether the element with index i must sort before the element with index j.
+func (s sortableIndices) Less(i, j int) bool {
+	vi, erri := s.state.ValidatorAtIndexReadOnly(s.indices[i])
+	vj, errj := s.state.ValidatorAtIndexReadOnly(s.indices[j])
+
+	if erri != nil || errj != nil {
+		return false
+	}
+
+	a, b := vi.ActivationEligibilityEpoch(), vj.ActivationEligibilityEpoch()
+	if a == b {
+		return s.indices[i] < s.indices[j]
+	}
+	return a < b
+}

beacon-chain/core/epoch/sortable_indices_test.go

@@ -0,0 +1,53 @@
+package epoch
+
+import (
+	"sort"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestSortableIndices(t *testing.T) {
+	st, err := state_native.InitializeFromProtoPhase0(&eth.BeaconState{
+		Validators: []*eth.Validator{
+			{ActivationEligibilityEpoch: 0},
+			{ActivationEligibilityEpoch: 5},
+			{ActivationEligibilityEpoch: 4},
+			{ActivationEligibilityEpoch: 4},
+			{ActivationEligibilityEpoch: 2},
+			{ActivationEligibilityEpoch: 1},
+		},
+	})
+	require.NoError(t, err)
+
+	s := sortableIndices{
+		indices: []primitives.ValidatorIndex{
+			4,
+			2,
+			5,
+			3,
+			1,
+			0,
+		},
+		state: st,
+	}
+
+	sort.Sort(s)
+
+	want := []primitives.ValidatorIndex{
+		0,
+		5,
+		4,
+		2, // Validators with the same ActivationEligibilityEpoch are sorted by index, ascending.
+		3,
+		1,
+	}
+
+	if !cmp.Equal(s.indices, want) {
+		t.Errorf("Failed to sort indices correctly, wanted %v, got %v", want, s.indices)
+	}
+}

beacon-chain/core/helpers/BUILD.bazel

@@ -79,6 +79,7 @@ go_test(
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
+        "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",

beacon-chain/core/helpers/attestation.go

@@ -10,6 +10,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/crypto/hash"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	prysmTime "github.com/prysmaticlabs/prysm/v5/time"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
@@ -91,6 +92,14 @@ func IsAggregated(attestation ethpb.Att) bool {
 //
 //	return uint64((committees_since_epoch_start + committee_index) % ATTESTATION_SUBNET_COUNT)
 func ComputeSubnetForAttestation(activeValCount uint64, att ethpb.Att) uint64 {
+	if att.Version() >= version.Electra {
+		committeeIndex := 0
+		committeeIndices := att.CommitteeBitsVal().BitIndices()
+		if len(committeeIndices) > 0 {
+			committeeIndex = committeeIndices[0]
+		}
+		return ComputeSubnetFromCommitteeAndSlot(activeValCount, primitives.CommitteeIndex(committeeIndex), att.GetData().Slot)
+	}
 	return ComputeSubnetFromCommitteeAndSlot(activeValCount, att.GetData().CommitteeIndex, att.GetData().Slot)
 }
 

beacon-chain/core/helpers/attestation_test.go

@@ -73,21 +73,37 @@ func TestAttestation_ComputeSubnetForAttestation(t *testing.T) {
 		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
 	})
 	require.NoError(t, err)
-	att := &ethpb.Attestation{
-		AggregationBits: []byte{'A'},
-		Data: &ethpb.AttestationData{
-			Slot:            34,
-			CommitteeIndex:  4,
-			BeaconBlockRoot: []byte{'C'},
-			Source:          nil,
-			Target:          nil,
-		},
-		Signature: []byte{'B'},
-	}
-	valCount, err := helpers.ActiveValidatorCount(context.Background(), state, slots.ToEpoch(att.Data.Slot))
+	valCount, err := helpers.ActiveValidatorCount(context.Background(), state, slots.ToEpoch(34))
 	require.NoError(t, err)
-	sub := helpers.ComputeSubnetForAttestation(valCount, att)
-	assert.Equal(t, uint64(6), sub, "Did not get correct subnet for attestation")
+
+	t.Run("Phase 0", func(t *testing.T) {
+		att := &ethpb.Attestation{
+			AggregationBits: []byte{'A'},
+			Data: &ethpb.AttestationData{
+				Slot:            34,
+				CommitteeIndex:  4,
+				BeaconBlockRoot: []byte{'C'},
+			},
+			Signature: []byte{'B'},
+		}
+		sub := helpers.ComputeSubnetForAttestation(valCount, att)
+		assert.Equal(t, uint64(6), sub, "Did not get correct subnet for attestation")
+	})
+	t.Run("Electra", func(t *testing.T) {
+		cb := primitives.NewAttestationCommitteeBits()
+		cb.SetBitAt(4, true)
+		att := &ethpb.AttestationElectra{
+			AggregationBits: []byte{'A'},
+			CommitteeBits:   cb,
+			Data: &ethpb.AttestationData{
+				Slot:            34,
+				BeaconBlockRoot: []byte{'C'},
+			},
+			Signature: []byte{'B'},
+		}
+		sub := helpers.ComputeSubnetForAttestation(valCount, att)
+		assert.Equal(t, uint64(6), sub, "Did not get correct subnet for attestation")
+	})
 }
 
 func Test_ValidateAttestationTime(t *testing.T) {

beacon-chain/core/helpers/beacon_committee.go

@@ -82,6 +82,47 @@ func AttestationCommittees(ctx context.Context, st state.ReadOnlyBeaconState, at
 	return committees, nil
 }
 
+// BeaconCommittees returns the list of all beacon committees for a given state at a given slot.
+func BeaconCommittees(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot) ([][]primitives.ValidatorIndex, error) {
+	epoch := slots.ToEpoch(slot)
+	activeCount, err := ActiveValidatorCount(ctx, state, epoch)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not compute active validator count")
+	}
+	committeesPerSlot := SlotCommitteeCount(activeCount)
+	seed, err := Seed(state, epoch, params.BeaconConfig().DomainBeaconAttester)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get seed")
+	}
+
+	committees := make([][]primitives.ValidatorIndex, committeesPerSlot)
+	var activeIndices []primitives.ValidatorIndex
+
+	for idx := primitives.CommitteeIndex(0); idx < primitives.CommitteeIndex(len(committees)); idx++ {
+		committee, err := committeeCache.Committee(ctx, slot, seed, idx)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not interface with committee cache")
+		}
+		if committee != nil {
+			committees[idx] = committee
+			continue
+		}
+
+		if len(activeIndices) == 0 {
+			activeIndices, err = ActiveValidatorIndices(ctx, state, epoch)
+			if err != nil {
+				return nil, errors.Wrap(err, "could not get active indices")
+			}
+		}
+		committee, err = BeaconCommittee(ctx, activeIndices, seed, slot, idx)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not compute beacon committee")
+		}
+		committees[idx] = committee
+	}
+	return committees, nil
+}
+
 // BeaconCommitteeFromState returns the crosslink committee of a given slot and committee index. This
 // is a spec implementation where state is used as an argument. In case of state retrieval
 // becomes expensive, consider using BeaconCommittee below.
@@ -253,36 +294,22 @@ func CommitteeAssignments(ctx context.Context, state state.BeaconState, epoch pr
 	if err := verifyAssignmentEpoch(epoch, state); err != nil {
 		return nil, err
 	}
-
-	// Retrieve active validator count for the specified epoch.
-	activeValidatorCount, err := ActiveValidatorCount(ctx, state, epoch)
-	if err != nil {
-		return nil, err
-	}
-
-	// Determine the number of committees per slot based on the number of active validator indices.
-	numCommitteesPerSlot := SlotCommitteeCount(activeValidatorCount)
-
 	startSlot, err := slots.EpochStart(epoch)
 	if err != nil {
 		return nil, err
 	}
-
-	assignments := make(map[primitives.ValidatorIndex]*CommitteeAssignment)
 	vals := make(map[primitives.ValidatorIndex]struct{})
 	for _, v := range validators {
 		vals[v] = struct{}{}
 	}
-
+	assignments := make(map[primitives.ValidatorIndex]*CommitteeAssignment)
 	// Compute committee assignments for each slot in the epoch.
 	for slot := startSlot; slot < startSlot+params.BeaconConfig().SlotsPerEpoch; slot++ {
-		// Compute committees for the current slot.
-		for j := uint64(0); j < numCommitteesPerSlot; j++ {
-			committee, err := BeaconCommitteeFromState(ctx, state, slot, primitives.CommitteeIndex(j))
-			if err != nil {
-				return nil, err
-			}
-
+		committees, err := BeaconCommittees(ctx, state, slot)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not compute beacon committees")
+		}
+		for j, committee := range committees {
 			for _, vIndex := range committee {
 				if _, ok := vals[vIndex]; !ok { // Skip if the validator is not in the provided validators slice.
 					continue
@@ -296,7 +323,6 @@ func CommitteeAssignments(ctx context.Context, state state.BeaconState, epoch pr
 			}
 		}
 	}
-
 	return assignments, nil
 }
 
@@ -311,24 +337,6 @@ func VerifyBitfieldLength(bf bitfield.Bitfield, committeeSize uint64) error {
 	return nil
 }
 
-// VerifyAttestationBitfieldLengths verifies that an attestations aggregation bitfields is
-// a valid length matching the size of the committee.
-func VerifyAttestationBitfieldLengths(ctx context.Context, state state.ReadOnlyBeaconState, att ethpb.Att) error {
-	committee, err := BeaconCommitteeFromState(ctx, state, att.GetData().Slot, att.GetData().CommitteeIndex)
-	if err != nil {
-		return errors.Wrap(err, "could not retrieve beacon committees")
-	}
-
-	if committee == nil {
-		return errors.New("no committee exist for this attestation")
-	}
-
-	if err := VerifyBitfieldLength(att.GetAggregationBits(), uint64(len(committee))); err != nil {
-		return errors.Wrap(err, "failed to verify aggregation bitfield")
-	}
-	return nil
-}
-
 // ShuffledIndices uses input beacon state and returns the shuffled indices of the input epoch,
 // the shuffled indices then can be used to break up into committees.
 func ShuffledIndices(s state.ReadOnlyBeaconState, epoch primitives.Epoch) ([]primitives.ValidatorIndex, error) {

beacon-chain/core/helpers/beacon_committee_test.go

@@ -18,6 +18,7 @@ import (
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
@@ -402,7 +403,12 @@ func TestVerifyAttestationBitfieldLengths_OK(t *testing.T) {
 		helpers.ClearCache()
 
 		require.NoError(t, state.SetSlot(tt.stateSlot))
-		err := helpers.VerifyAttestationBitfieldLengths(context.Background(), state, tt.attestation)
+		att := tt.attestation
+		// Verify attesting indices are correct.
+		committee, err := helpers.BeaconCommitteeFromState(context.Background(), state, att.GetData().Slot, att.GetData().CommitteeIndex)
+		require.NoError(t, err)
+		require.NotNil(t, committee)
+		err = helpers.VerifyBitfieldLength(att.GetAggregationBits(), uint64(len(committee)))
 		if tt.verificationFailure {
 			assert.NotNil(t, err, "Verification succeeded when it was supposed to fail")
 		} else {
@@ -749,3 +755,27 @@ func TestAttestationCommittees(t *testing.T) {
 		assert.Equal(t, params.BeaconConfig().TargetCommitteeSize, uint64(len(committees[1])))
 	})
 }
+
+func TestBeaconCommittees(t *testing.T) {
+	prevConfig := params.BeaconConfig().Copy()
+	defer params.OverrideBeaconConfig(prevConfig)
+	c := params.BeaconConfig().Copy()
+	c.MinGenesisActiveValidatorCount = 128
+	c.SlotsPerEpoch = 4
+	c.TargetCommitteeSize = 16
+	params.OverrideBeaconConfig(c)
+
+	state, _ := util.DeterministicGenesisState(t, 256)
+
+	activeCount, err := helpers.ActiveValidatorCount(context.Background(), state, 0)
+	require.NoError(t, err)
+	committeesPerSlot := helpers.SlotCommitteeCount(activeCount)
+	committees, err := helpers.BeaconCommittees(context.Background(), state, 0)
+	require.NoError(t, err)
+	require.Equal(t, committeesPerSlot, uint64(len(committees)))
+	for idx := primitives.CommitteeIndex(0); idx < primitives.CommitteeIndex(len(committees)); idx++ {
+		committee, err := helpers.BeaconCommitteeFromState(context.Background(), state, 0, idx)
+		require.NoError(t, err)
+		require.DeepEqual(t, committees[idx], committee)
+	}
+}

beacon-chain/core/helpers/sync_committee.go

@@ -31,7 +31,7 @@ func IsCurrentPeriodSyncCommittee(st state.BeaconState, valIdx primitives.Valida
 		return false, err
 	}
 	indices, err := syncCommitteeCache.CurrentPeriodIndexPosition(root, valIdx)
-	if err == cache.ErrNonExistingSyncCommitteeKey {
+	if errors.Is(err, cache.ErrNonExistingSyncCommitteeKey) {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
 			return false, err
@@ -68,7 +68,7 @@ func IsNextPeriodSyncCommittee(
 		return false, err
 	}
 	indices, err := syncCommitteeCache.NextPeriodIndexPosition(root, valIdx)
-	if err == cache.ErrNonExistingSyncCommitteeKey {
+	if errors.Is(err, cache.ErrNonExistingSyncCommitteeKey) {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
 			return false, err
@@ -95,7 +95,7 @@ func CurrentPeriodSyncSubcommitteeIndices(
 		return nil, err
 	}
 	indices, err := syncCommitteeCache.CurrentPeriodIndexPosition(root, valIdx)
-	if err == cache.ErrNonExistingSyncCommitteeKey {
+	if errors.Is(err, cache.ErrNonExistingSyncCommitteeKey) {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
 			return nil, err
@@ -129,7 +129,7 @@ func NextPeriodSyncSubcommitteeIndices(
 		return nil, err
 	}
 	indices, err := syncCommitteeCache.NextPeriodIndexPosition(root, valIdx)
-	if err == cache.ErrNonExistingSyncCommitteeKey {
+	if errors.Is(err, cache.ErrNonExistingSyncCommitteeKey) {
 		val, err := st.ValidatorAtIndex(valIdx)
 		if err != nil {
 			return nil, err

beacon-chain/core/helpers/validators.go

@@ -17,6 +17,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/crypto/hash"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	log "github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -357,10 +358,10 @@ func BeaconProposerIndexAtSlot(ctx context.Context, state state.ReadOnlyBeaconSt
 //	      candidate_index = indices[compute_shuffled_index(i % total, total, seed)]
 //	      random_byte = hash(seed + uint_to_bytes(uint64(i // 32)))[i % 32]
 //	      effective_balance = state.validators[candidate_index].effective_balance
-//	      if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE * random_byte:
+//	      if effective_balance * MAX_RANDOM_BYTE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_byte: #[Modified in Electra:EIP7251]
 //	          return candidate_index
 //	      i += 1
-func ComputeProposerIndex(bState state.ReadOnlyValidators, activeIndices []primitives.ValidatorIndex, seed [32]byte) (primitives.ValidatorIndex, error) {
+func ComputeProposerIndex(bState state.ReadOnlyBeaconState, activeIndices []primitives.ValidatorIndex, seed [32]byte) (primitives.ValidatorIndex, error) {
 	length := uint64(len(activeIndices))
 	if length == 0 {
 		return 0, errors.New("empty active indices list")
@@ -385,7 +386,12 @@ func ComputeProposerIndex(bState state.ReadOnlyValidators, activeIndices []primi
 		}
 		effectiveBal := v.EffectiveBalance()
 
-		if effectiveBal*maxRandomByte >= params.BeaconConfig().MaxEffectiveBalance*uint64(randomByte) {
+		maxEB := params.BeaconConfig().MaxEffectiveBalance
+		if bState.Version() >= version.Electra {
+			maxEB = params.BeaconConfig().MaxEffectiveBalanceElectra
+		}
+
+		if effectiveBal*maxRandomByte >= maxEB*uint64(randomByte) {
 			return candidateIndex, nil
 		}
 	}
@@ -404,11 +410,11 @@ func ComputeProposerIndex(bState state.ReadOnlyValidators, activeIndices []primi
 //	        validator.activation_eligibility_epoch == FAR_FUTURE_EPOCH
 //	        and validator.effective_balance >= MIN_ACTIVATION_BALANCE  # [Modified in Electra:EIP7251]
 //	    )
-func IsEligibleForActivationQueue(validator *ethpb.Validator, currentEpoch primitives.Epoch) bool {
+func IsEligibleForActivationQueue(validator state.ReadOnlyValidator, currentEpoch primitives.Epoch) bool {
 	if currentEpoch >= params.BeaconConfig().ElectraForkEpoch {
-		return isEligibleForActivationQueueElectra(validator.ActivationEligibilityEpoch, validator.EffectiveBalance)
+		return isEligibleForActivationQueueElectra(validator.ActivationEligibilityEpoch(), validator.EffectiveBalance())
 	}
-	return isEligibleForActivationQueue(validator.ActivationEligibilityEpoch, validator.EffectiveBalance)
+	return isEligibleForActivationQueue(validator.ActivationEligibilityEpoch(), validator.EffectiveBalance())
 }
 
 // isEligibleForActivationQueue carries out the logic for IsEligibleForActivationQueue
@@ -464,13 +470,9 @@ func IsEligibleForActivation(state state.ReadOnlyCheckpoint, validator *ethpb.Va
 	return isEligibleForActivation(validator.ActivationEligibilityEpoch, validator.ActivationEpoch, finalizedEpoch)
 }
 
-// IsEligibleForActivationUsingTrie checks if the validator is eligible for activation.
-func IsEligibleForActivationUsingTrie(state state.ReadOnlyCheckpoint, validator state.ReadOnlyValidator) bool {
-	cpt := state.FinalizedCheckpoint()
-	if cpt == nil {
-		return false
-	}
-	return isEligibleForActivation(validator.ActivationEligibilityEpoch(), validator.ActivationEpoch(), cpt.Epoch)
+// IsEligibleForActivationUsingROVal checks if the validator is eligible for activation using the provided read only validator.
+func IsEligibleForActivationUsingROVal(state state.ReadOnlyCheckpoint, validator state.ReadOnlyValidator) bool {
+	return isEligibleForActivation(validator.ActivationEligibilityEpoch(), validator.ActivationEpoch(), state.FinalizedCheckpointEpoch())
 }
 
 // isEligibleForActivation carries out the logic for IsEligibleForActivation*
@@ -525,16 +527,16 @@ func HasCompoundingWithdrawalCredential(v interfaces.WithWithdrawalCredentials)
 	if v == nil {
 		return false
 	}
-	return isCompoundingWithdrawalCredential(v.GetWithdrawalCredentials())
+	return IsCompoundingWithdrawalCredential(v.GetWithdrawalCredentials())
 }
 
-// isCompoundingWithdrawalCredential checks if the credentials are a compounding withdrawal credential.
+// IsCompoundingWithdrawalCredential checks if the credentials are a compounding withdrawal credential.
 //
 // Spec definition:
 //
 //	def is_compounding_withdrawal_credential(withdrawal_credentials: Bytes32) -> bool:
 //	    return withdrawal_credentials[:1] == COMPOUNDING_WITHDRAWAL_PREFIX
-func isCompoundingWithdrawalCredential(creds []byte) bool {
+func IsCompoundingWithdrawalCredential(creds []byte) bool {
 	return bytes.HasPrefix(creds, []byte{params.BeaconConfig().CompoundingWithdrawalPrefixByte})
 }
 
@@ -548,7 +550,7 @@ func isCompoundingWithdrawalCredential(creds []byte) bool {
 //	    Check if ``validator`` has a 0x01 or 0x02 prefixed withdrawal credential.
 //	    """
 //	    return has_compounding_withdrawal_credential(validator) or has_eth1_withdrawal_credential(validator)
-func HasExecutionWithdrawalCredentials(v *ethpb.Validator) bool {
+func HasExecutionWithdrawalCredentials(v interfaces.WithWithdrawalCredentials) bool {
 	if v == nil {
 		return false
 	}
@@ -582,13 +584,13 @@ func IsSameWithdrawalCredentials(a, b *ethpb.Validator) bool {
 //	        and validator.withdrawable_epoch <= epoch
 //	        and balance > 0
 //	    )
-func IsFullyWithdrawableValidator(val *ethpb.Validator, balance uint64, epoch primitives.Epoch) bool {
+func IsFullyWithdrawableValidator(val *ethpb.Validator, balance uint64, epoch primitives.Epoch, fork int) bool {
 	if val == nil || balance <= 0 {
 		return false
 	}
 
 	// Electra / EIP-7251 logic
-	if epoch >= params.BeaconConfig().ElectraForkEpoch {
+	if fork >= version.Electra {
 		return HasExecutionWithdrawalCredentials(val) && val.WithdrawableEpoch <= epoch
 	}
 
@@ -598,12 +600,12 @@ func IsFullyWithdrawableValidator(val *ethpb.Validator, balance uint64, epoch pr
 // IsPartiallyWithdrawableValidator returns whether the validator is able to perform a
 // partial withdrawal. This function assumes that the caller has a lock on the state.
 // This method conditionally calls the fork appropriate implementation based on the epoch argument.
-func IsPartiallyWithdrawableValidator(val *ethpb.Validator, balance uint64, epoch primitives.Epoch) bool {
+func IsPartiallyWithdrawableValidator(val *ethpb.Validator, balance uint64, epoch primitives.Epoch, fork int) bool {
 	if val == nil {
 		return false
 	}
 
-	if epoch < params.BeaconConfig().ElectraForkEpoch {
+	if fork < version.Electra {
 		return isPartiallyWithdrawableValidatorCapella(val, balance, epoch)
 	}
 
@@ -674,68 +676,3 @@ func ValidatorMaxEffectiveBalance(val *ethpb.Validator) uint64 {
 	}
 	return params.BeaconConfig().MinActivationBalance
 }
-
-// QueueExcessActiveBalance queues validators with balances above the min activation balance and adds to pending balance deposit.
-//
-// Spec definition:
-//
-//	def queue_excess_active_balance(state: BeaconState, index: ValidatorIndex) -> None:
-//	    balance = state.balances[index]
-//	    if balance > MIN_ACTIVATION_BALANCE:
-//	        excess_balance = balance - MIN_ACTIVATION_BALANCE
-//	        state.balances[index] = MIN_ACTIVATION_BALANCE
-//	        state.pending_balance_deposits.append(
-//	            PendingBalanceDeposit(index=index, amount=excess_balance)
-//	        )
-func QueueExcessActiveBalance(s state.BeaconState, idx primitives.ValidatorIndex) error {
-	bal, err := s.BalanceAtIndex(idx)
-	if err != nil {
-		return err
-	}
-
-	if bal > params.BeaconConfig().MinActivationBalance {
-		excessBalance := bal - params.BeaconConfig().MinActivationBalance
-		if err := s.UpdateBalancesAtIndex(idx, params.BeaconConfig().MinActivationBalance); err != nil {
-			return err
-		}
-		return s.AppendPendingBalanceDeposit(idx, excessBalance)
-	}
-	return nil
-}
-
-// QueueEntireBalanceAndResetValidator queues the entire balance and resets the validator. This is used in electra fork logic.
-//
-// Spec definition:
-//
-//	def queue_entire_balance_and_reset_validator(state: BeaconState, index: ValidatorIndex) -> None:
-//	    balance = state.balances[index]
-//	    validator = state.validators[index]
-//		state.balances[index] = 0
-//	    validator.effective_balance = 0
-//	    validator.activation_eligibility_epoch = FAR_FUTURE_EPOCH
-//	    state.pending_balance_deposits.append(
-//	        PendingBalanceDeposit(index=index, amount=balance)
-//	    )
-func QueueEntireBalanceAndResetValidator(s state.BeaconState, idx primitives.ValidatorIndex) error {
-	bal, err := s.BalanceAtIndex(idx)
-	if err != nil {
-		return err
-	}
-
-	if err := s.UpdateBalancesAtIndex(idx, 0); err != nil {
-		return err
-	}
-
-	v, err := s.ValidatorAtIndex(idx)
-	if err != nil {
-		return err
-	}
-
-	v.EffectiveBalance = 0
-	v.ActivationEligibilityEpoch = params.BeaconConfig().FarFutureEpoch
-	if err := s.UpdateValidatorAtIndex(idx, v); err != nil {
-		return err
-	}
-
-	return s.AppendPendingBalanceDeposit(idx, bal)
-}

beacon-chain/core/helpers/validators_test.go

@@ -16,9 +16,9 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/crypto/hash"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	"github.com/prysmaticlabs/prysm/v5/testing/util"
 )
 
 func TestIsActiveValidator_OK(t *testing.T) {
@@ -598,10 +598,11 @@ func TestComputeProposerIndex(t *testing.T) {
 		seed       [32]byte
 	}
 	tests := []struct {
-		name      string
-		args      args
-		want      primitives.ValidatorIndex
-		wantedErr string
+		name             string
+		isElectraOrAbove bool
+		args             args
+		want             primitives.ValidatorIndex
+		wantedErr        string
 	}{
 		{
 			name: "all_active_indices",
@@ -683,6 +684,54 @@ func TestComputeProposerIndex(t *testing.T) {
 			},
 			want: 7,
 		},
+		{
+			name:             "electra_probability_changes",
+			isElectraOrAbove: true,
+			args: args{
+				validators: []*ethpb.Validator{
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance},
+				},
+				indices: []primitives.ValidatorIndex{3},
+				seed:    seed,
+			},
+			want: 3,
+		},
+		{
+			name:             "electra_probability_changes_all_active",
+			isElectraOrAbove: true,
+			args: args{
+				validators: []*ethpb.Validator{
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalance}, // skip this one
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+				},
+				indices: []primitives.ValidatorIndex{0, 1, 2, 3, 4},
+				seed:    seed,
+			},
+			want: 4,
+		},
+		{
+			name:             "electra_probability_returns_first_validator_with_criteria",
+			isElectraOrAbove: true,
+			args: args{
+				validators: []*ethpb.Validator{
+					{EffectiveBalance: 1},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+					{EffectiveBalance: 1},
+					{EffectiveBalance: 1},
+					{EffectiveBalance: params.BeaconConfig().MaxEffectiveBalanceElectra},
+				},
+				indices: []primitives.ValidatorIndex{1},
+				seed:    seed,
+			},
+			want: 1,
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -691,6 +740,11 @@ func TestComputeProposerIndex(t *testing.T) {
 			bState := &ethpb.BeaconState{Validators: tt.args.validators}
 			stTrie, err := state_native.InitializeFromProtoUnsafePhase0(bState)
 			require.NoError(t, err)
+			if tt.isElectraOrAbove {
+				stTrie, err = state_native.InitializeFromProtoUnsafeElectra(&ethpb.BeaconStateElectra{Validators: tt.args.validators})
+				require.NoError(t, err)
+			}
+
 			got, err := helpers.ComputeProposerIndex(stTrie, tt.args.indices, tt.args.seed)
 			if tt.wantedErr != "" {
 				assert.ErrorContains(t, tt.wantedErr, err)
@@ -744,7 +798,9 @@ func TestIsEligibleForActivationQueue(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			helpers.ClearCache()
 
-			assert.Equal(t, tt.want, helpers.IsEligibleForActivationQueue(tt.validator, tt.currentEpoch), "IsEligibleForActivationQueue()")
+			v, err := state_native.NewValidator(tt.validator)
+			assert.NoError(t, err)
+			assert.Equal(t, tt.want, helpers.IsEligibleForActivationQueue(v, tt.currentEpoch), "IsEligibleForActivationQueue()")
 		})
 	}
 }
@@ -915,6 +971,7 @@ func TestIsFullyWithdrawableValidator(t *testing.T) {
 		validator *ethpb.Validator
 		balance   uint64
 		epoch     primitives.Epoch
+		fork      int
 		want      bool
 	}{
 		{
@@ -972,13 +1029,14 @@ func TestIsFullyWithdrawableValidator(t *testing.T) {
 			},
 			balance: params.BeaconConfig().MaxEffectiveBalance,
 			epoch:   params.BeaconConfig().ElectraForkEpoch,
+			fork:    version.Electra,
 			want:    true,
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			assert.Equal(t, tt.want, helpers.IsFullyWithdrawableValidator(tt.validator, tt.balance, tt.epoch))
+			assert.Equal(t, tt.want, helpers.IsFullyWithdrawableValidator(tt.validator, tt.balance, tt.epoch, tt.fork))
 		})
 	}
 }
@@ -989,6 +1047,7 @@ func TestIsPartiallyWithdrawableValidator(t *testing.T) {
 		validator *ethpb.Validator
 		balance   uint64
 		epoch     primitives.Epoch
+		fork      int
 		want      bool
 	}{
 		{
@@ -1036,6 +1095,7 @@ func TestIsPartiallyWithdrawableValidator(t *testing.T) {
 			},
 			balance: params.BeaconConfig().MinActivationBalance * 2,
 			epoch:   params.BeaconConfig().ElectraForkEpoch,
+			fork:    version.Electra,
 			want:    true,
 		},
 		{
@@ -1046,13 +1106,14 @@ func TestIsPartiallyWithdrawableValidator(t *testing.T) {
 			},
 			balance: params.BeaconConfig().MaxEffectiveBalanceElectra * 2,
 			epoch:   params.BeaconConfig().ElectraForkEpoch,
+			fork:    version.Electra,
 			want:    true,
 		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			assert.Equal(t, tt.want, helpers.IsPartiallyWithdrawableValidator(tt.validator, tt.balance, tt.epoch))
+			assert.Equal(t, tt.want, helpers.IsPartiallyWithdrawableValidator(tt.validator, tt.balance, tt.epoch, tt.fork))
 		})
 	}
 }
@@ -1120,40 +1181,3 @@ func TestValidatorMaxEffectiveBalance(t *testing.T) {
 	// Sanity check that MinActivationBalance equals (pre-electra) MaxEffectiveBalance
 	assert.Equal(t, params.BeaconConfig().MinActivationBalance, params.BeaconConfig().MaxEffectiveBalance)
 }
-
-func TestQueueExcessActiveBalance_Ok(t *testing.T) {
-	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
-	bals := st.Balances()
-	bals[0] = params.BeaconConfig().MinActivationBalance + 1000
-	require.NoError(t, st.SetBalances(bals))
-
-	err := helpers.QueueExcessActiveBalance(st, 0)
-	require.NoError(t, err)
-
-	pbd, err := st.PendingBalanceDeposits()
-	require.NoError(t, err)
-	require.Equal(t, uint64(1000), pbd[0].Amount)
-
-	bals = st.Balances()
-	require.Equal(t, params.BeaconConfig().MinActivationBalance, bals[0])
-}
-
-func TestQueueEntireBalanceAndResetValidator_Ok(t *testing.T) {
-	st, _ := util.DeterministicGenesisStateElectra(t, params.BeaconConfig().MaxValidatorsPerCommittee)
-	val, err := st.ValidatorAtIndex(0)
-	require.NoError(t, err)
-	require.Equal(t, params.BeaconConfig().MaxEffectiveBalance, val.EffectiveBalance)
-	pbd, err := st.PendingBalanceDeposits()
-	require.NoError(t, err)
-	require.Equal(t, 0, len(pbd))
-	err = helpers.QueueEntireBalanceAndResetValidator(st, 0)
-	require.NoError(t, err)
-
-	pbd, err = st.PendingBalanceDeposits()
-	require.NoError(t, err)
-	require.Equal(t, 1, len(pbd))
-
-	val, err = st.ValidatorAtIndex(0)
-	require.NoError(t, err)
-	require.Equal(t, uint64(0), val.EffectiveBalance)
-}

beacon-chain/core/transition/BUILD.bazel

@@ -40,7 +40,6 @@ go_library(
         "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
-        "//math:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",

beacon-chain/core/transition/altair_transition_no_verify_sig_test.go

@@ -70,7 +70,7 @@ func TestExecuteAltairStateTransitionNoVerify_FullProcess(t *testing.T) {
 	}
 	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
 	require.NoError(t, err)
-	h := ethpb.CopyBeaconBlockHeader(beaconState.LatestBlockHeader())
+	h := beaconState.LatestBlockHeader().Copy()
 	prevStateRoot, err := beaconState.HashTreeRoot(context.Background())
 	require.NoError(t, err)
 	h.StateRoot = prevStateRoot[:]
@@ -157,7 +157,7 @@ func TestExecuteAltairStateTransitionNoVerifySignature_CouldNotVerifyStateRoot(t
 	}
 	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
 	require.NoError(t, err)
-	h := ethpb.CopyBeaconBlockHeader(beaconState.LatestBlockHeader())
+	h := beaconState.LatestBlockHeader().Copy()
 	prevStateRoot, err := beaconState.HashTreeRoot(context.Background())
 	require.NoError(t, err)
 	h.StateRoot = prevStateRoot[:]

beacon-chain/core/transition/bellatrix_transition_no_verify_sig_test.go

@@ -72,7 +72,7 @@ func TestExecuteBellatrixStateTransitionNoVerify_FullProcess(t *testing.T) {
 	}
 	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
 	require.NoError(t, err)
-	h := ethpb.CopyBeaconBlockHeader(beaconState.LatestBlockHeader())
+	h := beaconState.LatestBlockHeader().Copy()
 	prevStateRoot, err := beaconState.HashTreeRoot(context.Background())
 	require.NoError(t, err)
 	h.StateRoot = prevStateRoot[:]
@@ -159,7 +159,7 @@ func TestExecuteBellatrixStateTransitionNoVerifySignature_CouldNotVerifyStateRoo
 	}
 	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
 	require.NoError(t, err)
-	h := ethpb.CopyBeaconBlockHeader(beaconState.LatestBlockHeader())
+	h := beaconState.LatestBlockHeader().Copy()
 	prevStateRoot, err := beaconState.HashTreeRoot(context.Background())
 	require.NoError(t, err)
 	h.StateRoot = prevStateRoot[:]

beacon-chain/core/transition/state-bellatrix.go

@@ -5,7 +5,6 @@ import (
 
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
-	b "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
@@ -71,7 +70,7 @@ func GenesisBeaconStateBellatrix(ctx context.Context, deposits []*ethpb.Deposit,
 		return nil, err
 	}
 
-	st, err = b.ProcessPreGenesisDeposits(ctx, st, deposits)
+	st, err = altair.ProcessPreGenesisDeposits(ctx, st, deposits)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process validator deposits")
 	}

beacon-chain/core/transition/state.go

@@ -4,7 +4,7 @@ import (
 	"context"
 
 	"github.com/pkg/errors"
-	b "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/blocks"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
@@ -69,7 +69,7 @@ func GenesisBeaconState(ctx context.Context, deposits []*ethpb.Deposit, genesisT
 		return nil, err
 	}
 
-	st, err = b.ProcessPreGenesisDeposits(ctx, st, deposits)
+	st, err = altair.ProcessPreGenesisDeposits(ctx, st, deposits)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process validator deposits")
 	}
@@ -92,7 +92,7 @@ func PreminedGenesisBeaconState(ctx context.Context, deposits []*ethpb.Deposit,
 	if err != nil {
 		return nil, err
 	}
-	st, err = b.ProcessPreGenesisDeposits(ctx, st, deposits)
+	st, err = altair.ProcessPreGenesisDeposits(ctx, st, deposits)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process validator deposits")
 	}

beacon-chain/core/transition/transition.go

@@ -24,12 +24,13 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/math"
 	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"go.opencensus.io/trace"
 )
 
+type customProcessingFn func(context.Context, state.BeaconState) error
+
 // ExecuteStateTransition defines the procedure for a state transition function.
 //
 // Note: This method differs from the spec pseudocode as it uses a batch signature verification.
@@ -174,18 +175,7 @@ func ProcessSlotsIfPossible(ctx context.Context, state state.BeaconState, target
 	return state, nil
 }
 
-// ProcessSlots process through skip slots and apply epoch transition when it's needed
-//
-// Spec pseudocode definition:
-//
-//	def process_slots(state: BeaconState, slot: Slot) -> None:
-//	  assert state.slot < slot
-//	  while state.slot < slot:
-//	      process_slot(state)
-//	      # Process epoch on the start slot of the next epoch
-//	      if (state.slot + 1) % SLOTS_PER_EPOCH == 0:
-//	          process_epoch(state)
-//	      state.slot = Slot(state.slot + 1)
+// ProcessSlots includes core slot processing as well as a cache
 func ProcessSlots(ctx context.Context, state state.BeaconState, slot primitives.Slot) (state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "core.state.ProcessSlots")
 	defer span.End()
@@ -232,42 +222,63 @@ func ProcessSlots(ctx context.Context, state state.BeaconState, slot primitives.
 	defer func() {
 		SkipSlotCache.MarkNotInProgress(key)
 	}()
+	state, err = ProcessSlotsCore(ctx, span, state, slot, cacheBestBeaconStateOnErrFn(highestSlot, key))
+	if err != nil {
+		return nil, err
+	}
+	if highestSlot < state.Slot() {
+		SkipSlotCache.Put(ctx, key, state)
+	}
 
-	for state.Slot() < slot {
+	return state, nil
+}
+
+func cacheBestBeaconStateOnErrFn(highestSlot primitives.Slot, key [32]byte) customProcessingFn {
+	return func(ctx context.Context, state state.BeaconState) error {
 		if ctx.Err() != nil {
-			tracing.AnnotateError(span, ctx.Err())
 			// Cache last best value.
 			if highestSlot < state.Slot() {
-				if SkipSlotCache.Put(ctx, key, state); err != nil {
-					log.WithError(err).Error("Failed to put skip slot cache value")
-				}
+				SkipSlotCache.Put(ctx, key, state)
+			}
+			return ctx.Err()
+		}
+		return nil
+	}
+}
+
+// ProcessSlotsCore process through skip slots and apply epoch transition when it's needed
+//
+// Spec pseudocode definition:
+//
+//	def process_slots(state: BeaconState, slot: Slot) -> None:
+//	  assert state.slot < slot
+//	  while state.slot < slot:
+//	      process_slot(state)
+//	      # Process epoch on the start slot of the next epoch
+//	      if (state.slot + 1) % SLOTS_PER_EPOCH == 0:
+//	          process_epoch(state)
+//	      state.slot = Slot(state.slot + 1)
+func ProcessSlotsCore(ctx context.Context, span *trace.Span, state state.BeaconState, slot primitives.Slot, fn customProcessingFn) (state.BeaconState, error) {
+	var err error
+	for state.Slot() < slot {
+		if fn != nil {
+			if err = fn(ctx, state); err != nil {
+				tracing.AnnotateError(span, err)
+				return nil, err
 			}
-			return nil, ctx.Err()
 		}
 		state, err = ProcessSlot(ctx, state)
 		if err != nil {
 			tracing.AnnotateError(span, err)
 			return nil, errors.Wrap(err, "could not process slot")
 		}
-		if time.CanProcessEpoch(state) {
-			if state.Version() == version.Phase0 {
-				state, err = ProcessEpochPrecompute(ctx, state)
-				if err != nil {
-					tracing.AnnotateError(span, err)
-					return nil, errors.Wrap(err, "could not process epoch with optimizations")
-				}
-			} else if state.Version() <= version.Deneb {
-				if err = altair.ProcessEpoch(ctx, state); err != nil {
-					tracing.AnnotateError(span, err)
-					return nil, errors.Wrap(err, fmt.Sprintf("could not process %s epoch", version.String(state.Version())))
-				}
-			} else {
-				if err = electra.ProcessEpoch(ctx, state); err != nil {
-					tracing.AnnotateError(span, err)
-					return nil, errors.Wrap(err, fmt.Sprintf("could not process %s epoch", version.String(state.Version())))
-				}
-			}
+
+		state, err = ProcessEpoch(ctx, state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, err
 		}
+
 		if err := state.SetSlot(state.Slot() + 1); err != nil {
 			tracing.AnnotateError(span, err)
 			return nil, errors.Wrap(err, "failed to increment state slot")
@@ -279,25 +290,46 @@ func ProcessSlots(ctx context.Context, state state.BeaconState, slot primitives.
 			return nil, errors.Wrap(err, "failed to upgrade state")
 		}
 	}
-
-	if highestSlot < state.Slot() {
-		SkipSlotCache.Put(ctx, key, state)
-	}
-
 	return state, nil
 }
 
+// ProcessEpoch is a wrapper on fork specific epoch processing
+func ProcessEpoch(ctx context.Context, state state.BeaconState) (state.BeaconState, error) {
+	var err error
+	if time.CanProcessEpoch(state) {
+		if state.Version() == version.Electra {
+			if err = electra.ProcessEpoch(ctx, state); err != nil {
+				return nil, errors.Wrap(err, fmt.Sprintf("could not process %s epoch", version.String(state.Version())))
+			}
+		} else if state.Version() >= version.Altair {
+			if err = altair.ProcessEpoch(ctx, state); err != nil {
+				return nil, errors.Wrap(err, fmt.Sprintf("could not process %s epoch", version.String(state.Version())))
+			}
+		} else {
+			state, err = ProcessEpochPrecompute(ctx, state)
+			if err != nil {
+				return nil, errors.Wrap(err, "could not process epoch with optimizations")
+			}
+		}
+	}
+	return state, err
+}
+
 // UpgradeState upgrades the state to the next version if possible.
 func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "core.state.UpgradeState")
 	defer span.End()
+
 	var err error
+	upgraded := false
+
 	if time.CanUpgradeToAltair(state.Slot()) {
 		state, err = altair.UpgradeToAltair(ctx, state)
 		if err != nil {
 			tracing.AnnotateError(span, err)
 			return nil, err
 		}
+		upgraded = true
 	}
 
 	if time.CanUpgradeToBellatrix(state.Slot()) {
@@ -306,6 +338,7 @@ func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconSta
 			tracing.AnnotateError(span, err)
 			return nil, err
 		}
+		upgraded = true
 	}
 
 	if time.CanUpgradeToCapella(state.Slot()) {
@@ -314,6 +347,7 @@ func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconSta
 			tracing.AnnotateError(span, err)
 			return nil, err
 		}
+		upgraded = true
 	}
 
 	if time.CanUpgradeToDeneb(state.Slot()) {
@@ -322,6 +356,7 @@ func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconSta
 			tracing.AnnotateError(span, err)
 			return nil, err
 		}
+		upgraded = true
 	}
 
 	if time.CanUpgradeToElectra(state.Slot()) {
@@ -330,7 +365,13 @@ func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconSta
 			tracing.AnnotateError(span, err)
 			return nil, err
 		}
+		upgraded = true
 	}
+
+	if upgraded {
+		log.Debugf("upgraded state to %s", version.String(state.Version()))
+	}
+
 	return state, nil
 }
 
@@ -376,14 +417,25 @@ func VerifyOperationLengths(_ context.Context, state state.BeaconState, b interf
 	if eth1Data == nil {
 		return nil, errors.New("nil eth1data in state")
 	}
-	if state.Eth1DepositIndex() > eth1Data.DepositCount {
-		return nil, fmt.Errorf("expected state.deposit_index %d <= eth1data.deposit_count %d", state.Eth1DepositIndex(), eth1Data.DepositCount)
-	}
-	maxDeposits := math.Min(params.BeaconConfig().MaxDeposits, eth1Data.DepositCount-state.Eth1DepositIndex())
-	// Verify outstanding deposits are processed up to max number of deposits
-	if uint64(len(body.Deposits())) != maxDeposits {
-		return nil, fmt.Errorf("incorrect outstanding deposits in block body, wanted: %d, got: %d",
-			maxDeposits, len(body.Deposits()))
+
+	if state.Version() < version.Electra {
+		// Deneb specs
+		//  # Verify that outstanding deposits are processed up to the maximum number of deposits
+		//    assert len(body.deposits) == min(MAX_DEPOSITS, state.eth1_data.deposit_count - state.eth1_deposit_index)
+		if state.Eth1DepositIndex() > eth1Data.DepositCount {
+			return nil, fmt.Errorf("expected state.deposit_index %d <= eth1data.deposit_count %d", state.Eth1DepositIndex(), eth1Data.DepositCount)
+		}
+		maxDeposits := min(params.BeaconConfig().MaxDeposits, eth1Data.DepositCount-state.Eth1DepositIndex())
+		// Verify outstanding deposits are processed up to max number of deposits
+		if uint64(len(body.Deposits())) != maxDeposits {
+			return nil, fmt.Errorf("incorrect outstanding deposits in block body, wanted: %d, got: %d",
+				maxDeposits, len(body.Deposits()))
+		}
+	} else {
+		// Electra
+		if err := electra.VerifyBlockDepositLength(body, state); err != nil {
+			return nil, errors.Wrap(err, "failed to verify block deposit length")
+		}
 	}
 
 	return state, nil

beacon-chain/core/transition/transition_no_verify_sig.go

@@ -12,7 +12,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition/interop"
 	v "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/validators"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
-	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
@@ -262,24 +261,21 @@ func ProcessOperationsNoVerifyAttsSigs(
 	}
 
 	var err error
-	switch beaconBlock.Version() {
-	case version.Phase0:
+	if beaconBlock.Version() == version.Phase0 {
 		state, err = phase0Operations(ctx, state, beaconBlock)
 		if err != nil {
 			return nil, err
 		}
-	case version.Altair, version.Bellatrix, version.Capella, version.Deneb:
+	} else if beaconBlock.Version() < version.Electra {
 		state, err = altairOperations(ctx, state, beaconBlock)
 		if err != nil {
 			return nil, err
 		}
-	case version.Electra:
-		state, err = electraOperations(ctx, state, beaconBlock)
+	} else {
+		state, err = electra.ProcessOperations(ctx, state, beaconBlock)
 		if err != nil {
 			return nil, err
 		}
-	default:
-		return nil, errors.New("block does not have correct version")
 	}
 
 	return state, nil
@@ -331,20 +327,18 @@ func ProcessBlockForStateRoot(
 		if err != nil {
 			return nil, err
 		}
-		if blk.IsBlinded() {
-			state, err = b.ProcessPayloadHeader(state, executionData)
-		} else {
-			state, err = b.ProcessPayload(state, executionData)
+		if state.Version() >= version.Capella {
+			state, err = b.ProcessWithdrawals(state, executionData)
+			if err != nil {
+				return nil, errors.Wrap(err, "could not process withdrawals")
+			}
 		}
+		state, err = b.ProcessPayload(state, blk.Body())
 		if err != nil {
 			return nil, errors.Wrap(err, "could not process execution data")
 		}
 	}
 
-	if err := VerifyBlobCommitmentCount(blk); err != nil {
-		return nil, err
-	}
-
 	randaoReveal := signed.Block().Body().RandaoReveal()
 	state, err = b.ProcessRandaoNoVerify(state, randaoReveal[:])
 	if err != nil {
@@ -380,87 +374,6 @@ func ProcessBlockForStateRoot(
 	return state, nil
 }
 
-func VerifyBlobCommitmentCount(blk interfaces.ReadOnlyBeaconBlock) error {
-	if blk.Version() < version.Deneb {
-		return nil
-	}
-	kzgs, err := blk.Body().BlobKzgCommitments()
-	if err != nil {
-		return err
-	}
-	if len(kzgs) > field_params.MaxBlobsPerBlock {
-		return fmt.Errorf("too many kzg commitments in block: %d", len(kzgs))
-	}
-	return nil
-}
-
-// electraOperations
-//
-// Spec definition:
-//
-//	def process_operations(state: BeaconState, body: BeaconBlockBody) -> None:
-//	    # [Modified in Electra:EIP6110]
-//	    # Disable former deposit mechanism once all prior deposits are processed
-//	    eth1_deposit_index_limit = min(state.eth1_data.deposit_count, state.deposit_requests_start_index)
-//	    if state.eth1_deposit_index < eth1_deposit_index_limit:
-//	        assert len(body.deposits) == min(MAX_DEPOSITS, eth1_deposit_index_limit - state.eth1_deposit_index)
-//	    else:
-//	        assert len(body.deposits) == 0
-//
-//	    def for_ops(operations: Sequence[Any], fn: Callable[[BeaconState, Any], None]) -> None:
-//	        for operation in operations:
-//	            fn(state, operation)
-//
-//	    for_ops(body.proposer_slashings, process_proposer_slashing)
-//	    for_ops(body.attester_slashings, process_attester_slashing)
-//	    for_ops(body.attestations, process_attestation)  # [Modified in Electra:EIP7549]
-//	    for_ops(body.deposits, process_deposit)  # [Modified in Electra:EIP7251]
-//	    for_ops(body.voluntary_exits, process_voluntary_exit)  # [Modified in Electra:EIP7251]
-//	    for_ops(body.bls_to_execution_changes, process_bls_to_execution_change)
-//	    # [New in Electra:EIP7002:EIP7251]
-//	    for_ops(body.execution_payload.withdrawal_requests, process_execution_layer_withdrawal_request)
-//	    for_ops(body.execution_payload.deposit_requests, process_deposit_requests)  # [New in Electra:EIP6110]
-//	    for_ops(body.consolidations, process_consolidation)  # [New in Electra:EIP7251]
-func electraOperations(
-	ctx context.Context,
-	st state.BeaconState,
-	block interfaces.ReadOnlyBeaconBlock) (state.BeaconState, error) {
-	// 6110 validations are in VerifyOperationLengths
-
-	// Electra extends the altair operations.
-	st, err := altairOperations(ctx, st, block)
-	if err != nil {
-		return nil, err
-	}
-	b := block.Body()
-	bod, ok := b.(interfaces.ROBlockBodyElectra)
-	if !ok {
-		return nil, errors.New("could not cast block body to electra block body")
-	}
-	e, err := bod.Execution()
-	if err != nil {
-		return nil, errors.Wrap(err, "could not get execution data from block")
-	}
-	exe, ok := e.(interfaces.ExecutionDataElectra)
-	if !ok {
-		return nil, errors.New("could not cast execution data to electra execution data")
-	}
-	st, err = electra.ProcessWithdrawalRequests(ctx, st, exe.WithdrawalRequests())
-	if err != nil {
-		return nil, errors.Wrap(err, "could not process execution layer withdrawal requests")
-	}
-
-	st, err = electra.ProcessDepositRequests(ctx, st, exe.DepositRequests()) // TODO: EIP-6110 deposit changes.
-	if err != nil {
-		return nil, errors.Wrap(err, "could not process deposit receipts")
-	}
-
-	if err := electra.ProcessConsolidations(ctx, st, bod.Consolidations()); err != nil {
-		return nil, errors.Wrap(err, "could not process consolidations")
-	}
-	return st, nil
-}
-
 // This calls altair block operations.
 func altairOperations(
 	ctx context.Context,
@@ -505,7 +418,7 @@ func phase0Operations(
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process block attestations")
 	}
-	if _, err := b.ProcessDeposits(ctx, st, beaconBlock.Body().Deposits()); err != nil {
+	if _, err := altair.ProcessDeposits(ctx, st, beaconBlock.Body().Deposits()); err != nil {
 		return nil, errors.Wrap(err, "could not process deposits")
 	}
 	return b.ProcessVoluntaryExits(ctx, st, beaconBlock.Body().VoluntaryExits())

beacon-chain/core/transition/transition_no_verify_sig_test.go

@@ -2,13 +2,11 @@ package transition_test
 
 import (
 	"context"
-	"fmt"
 	"testing"
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/transition"
-	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
@@ -212,15 +210,3 @@ func TestProcessBlockDifferentVersion(t *testing.T) {
 	_, _, err = transition.ProcessBlockNoVerifyAnySig(context.Background(), beaconState, wsb)
 	require.ErrorContains(t, "state and block are different version. 0 != 1", err)
 }
-
-func TestVerifyBlobCommitmentCount(t *testing.T) {
-	b := &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{}}
-	rb, err := blocks.NewBeaconBlock(b)
-	require.NoError(t, err)
-	require.NoError(t, transition.VerifyBlobCommitmentCount(rb))
-
-	b = &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{BlobKzgCommitments: make([][]byte, field_params.MaxBlobsPerBlock+1)}}
-	rb, err = blocks.NewBeaconBlock(b)
-	require.NoError(t, err)
-	require.ErrorContains(t, fmt.Sprintf("too many kzg commitments in block: %d", field_params.MaxBlobsPerBlock+1), transition.VerifyBlobCommitmentCount(rb))
-}

beacon-chain/db/iface/interface.go

@@ -161,6 +161,7 @@ type SlasherDatabase interface {
 	) ([]*ethpb.HighestAttestation, error)
 	DatabasePath() string
 	ClearDB() error
+	Migrate(ctx context.Context, headEpoch, maxPruningEpoch primitives.Epoch, batchSize int) error
 }
 
 // Database interface with full access.

beacon-chain/db/kv/blocks_test.go

@@ -132,16 +132,6 @@ var blockTests = []struct {
 			b.Block.Slot = slot
 			if root != nil {
 				b.Block.ParentRoot = root
-				b.Block.Body.Consolidations = []*ethpb.SignedConsolidation{
-					{
-						Message: &ethpb.Consolidation{
-							SourceIndex: 1,
-							TargetIndex: 2,
-							Epoch:       3,
-						},
-						Signature: make([]byte, 96),
-					},
-				}
 			}
 			return blocks.NewSignedBeaconBlock(b)
 		},
@@ -153,16 +143,6 @@ var blockTests = []struct {
 			b.Message.Slot = slot
 			if root != nil {
 				b.Message.ParentRoot = root
-				b.Message.Body.Consolidations = []*ethpb.SignedConsolidation{
-					{
-						Message: &ethpb.Consolidation{
-							SourceIndex: 1,
-							TargetIndex: 2,
-							Epoch:       3,
-						},
-						Signature: make([]byte, 96),
-					},
-				}
 			}
 			return blocks.NewSignedBeaconBlock(b)
 		}},

beacon-chain/db/kv/encoding.go

@@ -68,11 +68,11 @@ func isSSZStorageFormat(obj interface{}) bool {
 		return true
 	case *ethpb.BeaconBlock:
 		return true
-	case *ethpb.Attestation:
+	case *ethpb.Attestation, *ethpb.AttestationElectra:
 		return true
 	case *ethpb.Deposit:
 		return true
-	case *ethpb.AttesterSlashing:
+	case *ethpb.AttesterSlashing, *ethpb.AttesterSlashingElectra:
 		return true
 	case *ethpb.ProposerSlashing:
 		return true