Turn gossip param

* Subnets subscription: Avoid dynamic subscribing blocking in case not enough peers per subnets are found.

* `subscribeWithParameters`: Use struct to avoid too many function parameters (no functional changes).

* Optimise subnets search.

Currently, when we are looking for peers in let's say data column sidecars subnets 3, 6 and 7, we first look for peers in subnet 3.
If, during the crawling, we meet some peers with subnet 6, we discard them (because we are exclusively looking for peers with subnet 3).
When we are happy, we start again with peers with subnet 6.

This commit optimizes that by looking for peers with satisfy our constraints in one look.

* Fix James' comment.

* Fix James' comment.

* Fix James' comment.

* Fix James' commnet.

* Fix James' comment.

* Fix James' comment.

* Fix James's comment.

* Simplify following James' comment.

* Fix James' comment.

* Update beacon-chain/sync/rpc_goodbye.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

* Update config/params/config.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

* Update beacon-chain/sync/subscriber.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

* Fix Preston's comment.

* Fix Preston's comment.

* `TestService_BroadcastDataColumn`: Re-add sleep 50 ms.

* Fix Preston's comment.

* Update beacon-chain/p2p/subnets.go

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

---------

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>

BUILD.bazel

@@ -194,6 +194,7 @@ nogo(
         "//tools/analyzers/gocognit:go_default_library",
         "//tools/analyzers/ineffassign:go_default_library",
         "//tools/analyzers/interfacechecker:go_default_library",
+        "//tools/analyzers/logcapitalization:go_default_library",
         "//tools/analyzers/logruswitherror:go_default_library",
         "//tools/analyzers/maligned:go_default_library",
         "//tools/analyzers/nop:go_default_library",

WORKSPACE

@@ -1,7 +1,7 @@
 workspace(name = "prysm")
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "rules_pkg",
@@ -16,8 +16,6 @@ load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
 
 rules_pkg_dependencies()
 
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
 http_archive(
     name = "toolchains_protoc",
     sha256 = "abb1540f8a9e045422730670ebb2f25b41fa56ca5a7cf795175a110a0a68f4ad",
@@ -255,16 +253,16 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.6.0-alpha.0"
+consensus_spec_version = "v1.6.0-alpha.1"
 
 load("@prysm//tools:download_spectests.bzl", "consensus_spec_tests")
 
 consensus_spec_tests(
     name = "consensus_spec_tests",
     flavors = {
-        "general": "sha256-W7oKvoM0nAkyitykRxAw6kmCvjYC01IqiNJy0AmCnMM=",
-        "minimal": "sha256-ig7/zxomjv6buBWMom4IxAJh3lFJ9+JnY44E7c8ZNP8=",
-        "mainnet": "sha256-mjx+MkXtPhCNv4c4knLYLIkvIdpF7WTjx/ElvGPQzSo=",
+        "general": "sha256-o4t9p3R+fQHF4KOykGmwlG3zDw5wUdVWprkzId8aIsk=",
+        "minimal": "sha256-sU7ToI8t3MR8x0vVjC8ERmAHZDWpEmnAC9FWIpHi5x4=",
+        "mainnet": "sha256-YKS4wngg0LgI9Upp4MYJ77aG+8+e/G4YeqEIlp06LZw=",
     },
     version = consensus_spec_version,
 )
@@ -280,7 +278,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-u0RkIZIeGttb3sInR31mO64aBSwxALqO5SYIPlqEvPo=",
+    integrity = "sha256-Nv4TEuEJPQIM4E6T9J0FOITsmappmXZjGtlhe1HEXnU=",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )

api/client/beacon/health/BUILD.bazel

@@ -1,20 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "health.go",
-        "interfaces.go",
-        "mock.go",
-    ],
-    importpath = "github.com/OffchainLabs/prysm/v6/api/client/beacon/health",
-    visibility = ["//visibility:public"],
-    deps = ["@org_uber_go_mock//gomock:go_default_library"],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = ["health_test.go"],
-    embed = [":go_default_library"],
-    deps = ["@org_uber_go_mock//gomock:go_default_library"],
-)

api/client/beacon/health/health.go

@@ -1,58 +0,0 @@
-package health
-
-import (
-	"context"
-	"sync"
-)
-
-type NodeHealthTracker struct {
-	isHealthy  *bool
-	healthChan chan bool
-	node       Node
-	sync.RWMutex
-}
-
-func NewTracker(node Node) Tracker {
-	return &NodeHealthTracker{
-		node:       node,
-		healthChan: make(chan bool, 1),
-	}
-}
-
-// HealthUpdates provides a read-only channel for health updates.
-func (n *NodeHealthTracker) HealthUpdates() <-chan bool {
-	return n.healthChan
-}
-
-func (n *NodeHealthTracker) IsHealthy(_ context.Context) bool {
-	n.RLock()
-	defer n.RUnlock()
-	if n.isHealthy == nil {
-		return false
-	}
-	return *n.isHealthy
-}
-
-func (n *NodeHealthTracker) CheckHealth(ctx context.Context) bool {
-	n.Lock()
-	defer n.Unlock()
-
-	newStatus := n.node.IsHealthy(ctx)
-	if n.isHealthy == nil {
-		n.isHealthy = &newStatus
-	}
-
-	isStatusChanged := newStatus != *n.isHealthy
-	if isStatusChanged {
-		// Update the health status
-		n.isHealthy = &newStatus
-		// Send the new status to the health channel, potentially overwriting the existing value
-		select {
-		case <-n.healthChan:
-			n.healthChan <- newStatus
-		default:
-			n.healthChan <- newStatus
-		}
-	}
-	return newStatus
-}

api/client/beacon/health/health_test.go

@@ -1,111 +0,0 @@
-package health
-
-import (
-	"context"
-	"sync"
-	"testing"
-
-	"go.uber.org/mock/gomock"
-)
-
-func TestNodeHealth_IsHealthy(t *testing.T) {
-	tests := []struct {
-		name      string
-		isHealthy bool
-		want      bool
-	}{
-		{"initially healthy", true, true},
-		{"initially unhealthy", false, false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			n := &NodeHealthTracker{
-				isHealthy:  &tt.isHealthy,
-				healthChan: make(chan bool, 1),
-			}
-			if got := n.IsHealthy(context.Background()); got != tt.want {
-				t.Errorf("IsHealthy() = %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func TestNodeHealth_UpdateNodeHealth(t *testing.T) {
-	tests := []struct {
-		name       string
-		initial    bool // Initial health status
-		newStatus  bool // Status to update to
-		shouldSend bool // Should a message be sent through the channel
-	}{
-		{"healthy to unhealthy", true, false, true},
-		{"unhealthy to healthy", false, true, true},
-		{"remain healthy", true, true, false},
-		{"remain unhealthy", false, false, false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			ctrl := gomock.NewController(t)
-			defer ctrl.Finish()
-			client := NewMockHealthClient(ctrl)
-			client.EXPECT().IsHealthy(gomock.Any()).Return(tt.newStatus)
-			n := &NodeHealthTracker{
-				isHealthy:  &tt.initial,
-				node:       client,
-				healthChan: make(chan bool, 1),
-			}
-
-			s := n.CheckHealth(context.Background())
-			// Check if health status was updated
-			if s != tt.newStatus {
-				t.Errorf("UpdateNodeHealth() failed to update isHealthy from %v to %v", tt.initial, tt.newStatus)
-			}
-
-			select {
-			case status := <-n.HealthUpdates():
-				if !tt.shouldSend {
-					t.Errorf("UpdateNodeHealth() unexpectedly sent status %v to HealthCh", status)
-				} else if status != tt.newStatus {
-					t.Errorf("UpdateNodeHealth() sent wrong status %v, want %v", status, tt.newStatus)
-				}
-			default:
-				if tt.shouldSend {
-					t.Error("UpdateNodeHealth() did not send any status to HealthCh when expected")
-				}
-			}
-		})
-	}
-}
-
-func TestNodeHealth_Concurrency(t *testing.T) {
-	ctrl := gomock.NewController(t)
-	defer ctrl.Finish()
-	client := NewMockHealthClient(ctrl)
-	n := NewTracker(client)
-	var wg sync.WaitGroup
-
-	// Number of goroutines to spawn for both reading and writing
-	numGoroutines := 6
-
-	wg.Add(numGoroutines * 2) // for readers and writers
-
-	// Concurrently update health status
-	for i := 0; i < numGoroutines; i++ {
-		go func() {
-			defer wg.Done()
-			client.EXPECT().IsHealthy(gomock.Any()).Return(false).Times(1)
-			n.CheckHealth(context.Background())
-			client.EXPECT().IsHealthy(gomock.Any()).Return(true).Times(1)
-			n.CheckHealth(context.Background())
-		}()
-	}
-
-	// Concurrently read health status
-	for i := 0; i < numGoroutines; i++ {
-		go func() {
-			defer wg.Done()
-			_ = n.IsHealthy(context.Background()) // Just read the value
-		}()
-	}
-
-	wg.Wait() // Wait for all goroutines to finish
-}

api/client/beacon/health/interfaces.go

@@ -1,13 +0,0 @@
-package health
-
-import "context"
-
-type Tracker interface {
-	HealthUpdates() <-chan bool
-	CheckHealth(ctx context.Context) bool
-	Node
-}
-
-type Node interface {
-	IsHealthy(ctx context.Context) bool
-}

api/client/beacon/health/mock.go

@@ -1,58 +0,0 @@
-package health
-
-import (
-	"context"
-	"reflect"
-	"sync"
-
-	"go.uber.org/mock/gomock"
-)
-
-var (
-	_ = Node(&MockHealthClient{})
-)
-
-// MockHealthClient is a mock of HealthClient interface.
-type MockHealthClient struct {
-	ctrl     *gomock.Controller
-	recorder *MockHealthClientMockRecorder
-	sync.Mutex
-}
-
-// MockHealthClientMockRecorder is the mock recorder for MockHealthClient.
-type MockHealthClientMockRecorder struct {
-	mock *MockHealthClient
-}
-
-// IsHealthy mocks base method.
-func (m *MockHealthClient) IsHealthy(arg0 context.Context) bool {
-	m.Lock()
-	defer m.Unlock()
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "IsHealthy", arg0)
-	ret0, ok := ret[0].(bool)
-	if !ok {
-		return false
-	}
-	return ret0
-}
-
-// EXPECT returns an object that allows the caller to indicate expected use.
-func (m *MockHealthClient) EXPECT() *MockHealthClientMockRecorder {
-	return m.recorder
-}
-
-// IsHealthy indicates an expected call of IsHealthy.
-func (mr *MockHealthClientMockRecorder) IsHealthy(arg0 any) *gomock.Call {
-	mr.mock.Lock()
-	defer mr.mock.Unlock()
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "IsHealthy", reflect.TypeOf((*MockHealthClient)(nil).IsHealthy), arg0)
-}
-
-// NewMockHealthClient creates a new mock instance.
-func NewMockHealthClient(ctrl *gomock.Controller) *MockHealthClient {
-	mock := &MockHealthClient{ctrl: ctrl}
-	mock.recorder = &MockHealthClientMockRecorder{mock}
-	return mock
-}

api/client/builder/BUILD.bazel

@@ -50,6 +50,7 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",

api/client/builder/client.go

@@ -72,7 +72,7 @@ func (*requestLogger) observe(r *http.Request) (e error) {
 		log.WithFields(log.Fields{
 			"bodyBase64": "(nil value)",
 			"url":        r.URL.String(),
-		}).Info("builder http request")
+		}).Info("Builder http request")
 		return nil
 	}
 	t := io.TeeReader(r.Body, b)
@@ -89,7 +89,7 @@ func (*requestLogger) observe(r *http.Request) (e error) {
 	log.WithFields(log.Fields{
 		"bodyBase64": string(body),
 		"url":        r.URL.String(),
-	}).Info("builder http request")
+	}).Info("Builder http request")
 
 	return nil
 }
@@ -101,7 +101,7 @@ type BuilderClient interface {
 	NodeURL() string
 	GetHeader(ctx context.Context, slot primitives.Slot, parentHash [32]byte, pubkey [48]byte) (SignedBid, error)
 	RegisterValidator(ctx context.Context, svr []*ethpb.SignedValidatorRegistrationV1) error
-	SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error)
+	SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error)
 	Status(ctx context.Context) error
 }
 
@@ -446,6 +446,9 @@ func sszValidatorRegisterRequest(svr []*ethpb.SignedValidatorRegistrationV1) ([]
 var errResponseVersionMismatch = errors.New("builder API response uses a different version than requested in " + api.VersionHeader + " header")
 
 func getVersionsBlockToPayload(blockVersion int) (int, error) {
+	if blockVersion >= version.Fulu {
+		return version.Fulu, nil
+	}
 	if blockVersion >= version.Deneb {
 		return version.Deneb, nil
 	}
@@ -460,7 +463,7 @@ func getVersionsBlockToPayload(blockVersion int) (int, error) {
 
 // SubmitBlindedBlock calls the builder API endpoint that binds the validator to the builder and submits the block.
 // The response is the full execution payload used to create the blinded block.
-func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error) {
 	body, postOpts, err := c.buildBlindedBlockRequest(sb)
 	if err != nil {
 		return nil, nil, err
@@ -558,7 +561,7 @@ func (c *Client) buildBlindedBlockRequest(sb interfaces.ReadOnlySignedBeaconBloc
 func (c *Client) parseBlindedBlockResponse(
 	respBytes []byte,
 	forkVersion int,
-) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+) (interfaces.ExecutionData, v1.BlobsBundler, error) {
 	if c.sszEnabled {
 		return c.parseBlindedBlockResponseSSZ(respBytes, forkVersion)
 	}
@@ -568,8 +571,18 @@ func (c *Client) parseBlindedBlockResponse(
 func (c *Client) parseBlindedBlockResponseSSZ(
 	respBytes []byte,
 	forkVersion int,
-) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
-	if forkVersion >= version.Deneb {
+) (interfaces.ExecutionData, v1.BlobsBundler, error) {
+	if forkVersion >= version.Fulu {
+		payloadAndBlobs := &v1.ExecutionPayloadDenebAndBlobsBundleV2{}
+		if err := payloadAndBlobs.UnmarshalSSZ(respBytes); err != nil {
+			return nil, nil, errors.Wrap(err, "unable to unmarshal ExecutionPayloadDenebAndBlobsBundleV2 SSZ")
+		}
+		ed, err := blocks.NewWrappedExecutionData(payloadAndBlobs.Payload)
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "unable to wrap execution data for %s", version.String(forkVersion))
+		}
+		return ed, payloadAndBlobs.BlobsBundle, nil
+	} else if forkVersion >= version.Deneb {
 		payloadAndBlobs := &v1.ExecutionPayloadDenebAndBlobsBundle{}
 		if err := payloadAndBlobs.UnmarshalSSZ(respBytes); err != nil {
 			return nil, nil, errors.Wrap(err, "unable to unmarshal ExecutionPayloadDenebAndBlobsBundle SSZ")

api/client/builder/client_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/OffchainLabs/prysm/v6/api/server/structs"
 	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
+	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
 	v1 "github.com/OffchainLabs/prysm/v6/proto/engine/v1"
@@ -31,7 +32,7 @@ func (fn roundtrip) RoundTrip(r *http.Request) (*http.Response, error) {
 }
 
 func TestClient_Status(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	statusPath := "/eth/v1/builder/status"
 	hc := &http.Client{
 		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
@@ -84,7 +85,7 @@ func TestClient_Status(t *testing.T) {
 }
 
 func TestClient_RegisterValidator(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	expectedBody := `[{"message":{"fee_recipient":"0x0000000000000000000000000000000000000000","gas_limit":"23","timestamp":"42","pubkey":"0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"},"signature":"0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"}]`
 	expectedPath := "/eth/v1/builder/validators"
 	t.Run("JSON success", func(t *testing.T) {
@@ -168,7 +169,7 @@ func TestClient_RegisterValidator(t *testing.T) {
 }
 
 func TestClient_GetHeader(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	expectedPath := "/eth/v1/builder/header/23/0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2/0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
 	var slot primitives.Slot = 23
 	parentHash := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
@@ -601,7 +602,7 @@ func TestClient_GetHeader(t *testing.T) {
 }
 
 func TestSubmitBlindedBlock(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
 	t.Run("bellatrix", func(t *testing.T) {
 		hc := &http.Client{
@@ -1559,7 +1560,7 @@ func TestRequestLogger(t *testing.T) {
 	c, err := NewClient("localhost:3500", wo)
 	require.NoError(t, err)
 
-	ctx := context.Background()
+	ctx := t.Context()
 	hc := &http.Client{
 		Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
 			require.Equal(t, getStatus, r.URL.Path)
@@ -1574,3 +1575,166 @@ func TestRequestLogger(t *testing.T) {
 	err = c.Status(ctx)
 	require.NoError(t, err)
 }
+
+func TestGetVersionsBlockToPayload(t *testing.T) {
+	tests := []struct {
+		name            string
+		blockVersion    int
+		expectedVersion int
+		expectedError   bool
+	}{
+		{
+			name:            "Fulu version",
+			blockVersion:    6, // version.Fulu
+			expectedVersion: 6,
+			expectedError:   false,
+		},
+		{
+			name:            "Deneb version",
+			blockVersion:    4, // version.Deneb
+			expectedVersion: 4,
+			expectedError:   false,
+		},
+		{
+			name:            "Capella version",
+			blockVersion:    3, // version.Capella
+			expectedVersion: 3,
+			expectedError:   false,
+		},
+		{
+			name:            "Bellatrix version",
+			blockVersion:    2, // version.Bellatrix
+			expectedVersion: 2,
+			expectedError:   false,
+		},
+		{
+			name:          "Unsupported version",
+			blockVersion:  0,
+			expectedError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			version, err := getVersionsBlockToPayload(tt.blockVersion)
+			if tt.expectedError {
+				assert.NotNil(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.Equal(t, tt.expectedVersion, version)
+			}
+		})
+	}
+}
+
+func TestParseBlindedBlockResponseSSZ_WithBlobsBundleV2(t *testing.T) {
+	c := &Client{sszEnabled: true}
+
+	// Create test payload
+	payload := &v1.ExecutionPayloadDeneb{
+		ParentHash:    make([]byte, 32),
+		FeeRecipient:  make([]byte, 20),
+		StateRoot:     make([]byte, 32),
+		ReceiptsRoot:  make([]byte, 32),
+		LogsBloom:     make([]byte, 256),
+		PrevRandao:    make([]byte, 32),
+		BlockNumber:   123456,
+		GasLimit:      30000000,
+		GasUsed:       21000,
+		Timestamp:     1234567890,
+		ExtraData:     []byte("test-extra-data"),
+		BaseFeePerGas: make([]byte, 32),
+		BlockHash:     make([]byte, 32),
+		Transactions:  [][]byte{},
+		Withdrawals:   []*v1.Withdrawal{},
+		BlobGasUsed:   1024,
+		ExcessBlobGas: 2048,
+	}
+
+	// Create test BlobsBundleV2
+	bundleV2 := &v1.BlobsBundleV2{
+		KzgCommitments: [][]byte{make([]byte, 48), make([]byte, 48)},
+		Proofs:         [][]byte{make([]byte, 48), make([]byte, 48)},
+		Blobs:          [][]byte{make([]byte, 131072), make([]byte, 131072)},
+	}
+
+	// Test Fulu version (should use ExecutionPayloadDenebAndBlobsBundleV2)
+	t.Run("Fulu version with BlobsBundleV2", func(t *testing.T) {
+		payloadAndBlobsV2 := &v1.ExecutionPayloadDenebAndBlobsBundleV2{
+			Payload:     payload,
+			BlobsBundle: bundleV2,
+		}
+
+		respBytes, err := payloadAndBlobsV2.MarshalSSZ()
+		require.NoError(t, err)
+
+		ed, bundle, err := c.parseBlindedBlockResponseSSZ(respBytes, 6) // version.Fulu
+		require.NoError(t, err)
+		require.NotNil(t, ed)
+		require.NotNil(t, bundle)
+
+		// Verify the bundle is BlobsBundleV2
+		bundleV2Result, ok := bundle.(*v1.BlobsBundleV2)
+		assert.Equal(t, true, ok, "Expected BlobsBundleV2 type")
+		require.Equal(t, len(bundleV2.KzgCommitments), len(bundleV2Result.KzgCommitments))
+		require.Equal(t, len(bundleV2.Proofs), len(bundleV2Result.Proofs))
+		require.Equal(t, len(bundleV2.Blobs), len(bundleV2Result.Blobs))
+	})
+
+	// Test Deneb version (should use regular BlobsBundle)
+	t.Run("Deneb version with regular BlobsBundle", func(t *testing.T) {
+		regularBundle := &v1.BlobsBundle{
+			KzgCommitments: bundleV2.KzgCommitments,
+			Proofs:         bundleV2.Proofs,
+			Blobs:          bundleV2.Blobs,
+		}
+
+		payloadAndBlobs := &v1.ExecutionPayloadDenebAndBlobsBundle{
+			Payload:     payload,
+			BlobsBundle: regularBundle,
+		}
+
+		respBytes, err := payloadAndBlobs.MarshalSSZ()
+		require.NoError(t, err)
+
+		ed, bundle, err := c.parseBlindedBlockResponseSSZ(respBytes, 4) // version.Deneb
+		require.NoError(t, err)
+		require.NotNil(t, ed)
+		require.NotNil(t, bundle)
+
+		// Verify the bundle is regular BlobsBundle
+		regularBundleResult, ok := bundle.(*v1.BlobsBundle)
+		assert.Equal(t, true, ok, "Expected BlobsBundle type")
+		require.Equal(t, len(regularBundle.KzgCommitments), len(regularBundleResult.KzgCommitments))
+	})
+
+	// Test invalid SSZ data
+	t.Run("Invalid SSZ data", func(t *testing.T) {
+		invalidBytes := []byte("invalid-ssz-data")
+
+		ed, bundle, err := c.parseBlindedBlockResponseSSZ(invalidBytes, 6)
+		assert.NotNil(t, err)
+		assert.Equal(t, true, ed == nil)
+		assert.Equal(t, true, bundle == nil)
+	})
+}
+
+func TestSubmitBlindedBlock_BlobsBundlerInterface(t *testing.T) {
+	// Note: The full integration test is complex due to version detection logic
+	// The key functionality is tested in the parseBlindedBlockResponseSSZ tests above
+	// and in the mock service tests which verify the interface changes work correctly
+
+	t.Run("Interface signature verification", func(t *testing.T) {
+		// This test verifies that the SubmitBlindedBlock method signature
+		// has been updated to return BlobsBundler interface
+		
+		client := &Client{}
+
+		// Verify the method exists with the correct signature
+		// by using reflection or by checking it compiles with the interface
+		var _ func(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error) = client.SubmitBlindedBlock
+
+		// This test passes if the signature is correct
+		assert.Equal(t, true, true)
+	})
+}

api/client/builder/testing/mock.go

@@ -41,7 +41,7 @@ func (m MockClient) RegisterValidator(_ context.Context, svr []*ethpb.SignedVali
 }
 
 // SubmitBlindedBlock --
-func (MockClient) SubmitBlindedBlock(_ context.Context, _ interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+func (MockClient) SubmitBlindedBlock(_ context.Context, _ interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error) {
 	return nil, nil, nil
 }
 

api/client/event/event_stream_test.go

@@ -1,7 +1,6 @@
 package event
 
 import (
-	"context"
 	"fmt"
 	"net/http"
 	"net/http/httptest"
@@ -30,7 +29,7 @@ func TestNewEventStream(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			_, err := NewEventStream(context.Background(), &http.Client{}, tt.host, tt.topics)
+			_, err := NewEventStream(t.Context(), &http.Client{}, tt.host, tt.topics)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("NewEventStream() error = %v, wantErr %v", err, tt.wantErr)
 			}
@@ -56,7 +55,7 @@ func TestEventStream(t *testing.T) {
 
 	topics := []string{"head"}
 	eventsChannel := make(chan *Event, 1)
-	stream, err := NewEventStream(context.Background(), http.DefaultClient, server.URL, topics)
+	stream, err := NewEventStream(t.Context(), http.DefaultClient, server.URL, topics)
 	require.NoError(t, err)
 	go stream.Subscribe(eventsChannel)
 

api/grpc/grpcutils_test.go

@@ -1,7 +1,6 @@
 package grpc
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/testing/assert"
@@ -16,7 +15,7 @@ type customErrorData struct {
 
 func TestAppendHeaders(t *testing.T) {
 	t.Run("one_header", func(t *testing.T) {
-		ctx := AppendHeaders(context.Background(), []string{"first=value1"})
+		ctx := AppendHeaders(t.Context(), []string{"first=value1"})
 		md, ok := metadata.FromOutgoingContext(ctx)
 		require.Equal(t, true, ok, "Failed to read context metadata")
 		require.Equal(t, 1, md.Len(), "MetadataV0 contains wrong number of values")
@@ -24,7 +23,7 @@ func TestAppendHeaders(t *testing.T) {
 	})
 
 	t.Run("multiple_headers", func(t *testing.T) {
-		ctx := AppendHeaders(context.Background(), []string{"first=value1", "second=value2"})
+		ctx := AppendHeaders(t.Context(), []string{"first=value1", "second=value2"})
 		md, ok := metadata.FromOutgoingContext(ctx)
 		require.Equal(t, true, ok, "Failed to read context metadata")
 		require.Equal(t, 2, md.Len(), "MetadataV0 contains wrong number of values")
@@ -33,7 +32,7 @@ func TestAppendHeaders(t *testing.T) {
 	})
 
 	t.Run("one_empty_header", func(t *testing.T) {
-		ctx := AppendHeaders(context.Background(), []string{"first=value1", ""})
+		ctx := AppendHeaders(t.Context(), []string{"first=value1", ""})
 		md, ok := metadata.FromOutgoingContext(ctx)
 		require.Equal(t, true, ok, "Failed to read context metadata")
 		require.Equal(t, 1, md.Len(), "MetadataV0 contains wrong number of values")
@@ -42,7 +41,7 @@ func TestAppendHeaders(t *testing.T) {
 
 	t.Run("incorrect_header", func(t *testing.T) {
 		logHook := logTest.NewGlobal()
-		ctx := AppendHeaders(context.Background(), []string{"first=value1", "second"})
+		ctx := AppendHeaders(t.Context(), []string{"first=value1", "second"})
 		md, ok := metadata.FromOutgoingContext(ctx)
 		require.Equal(t, true, ok, "Failed to read context metadata")
 		require.Equal(t, 1, md.Len(), "MetadataV0 contains wrong number of values")
@@ -51,7 +50,7 @@ func TestAppendHeaders(t *testing.T) {
 	})
 
 	t.Run("header_value_with_equal_sign", func(t *testing.T) {
-		ctx := AppendHeaders(context.Background(), []string{"first=value=1"})
+		ctx := AppendHeaders(t.Context(), []string{"first=value=1"})
 		md, ok := metadata.FromOutgoingContext(ctx)
 		require.Equal(t, true, ok, "Failed to read context metadata")
 		require.Equal(t, 1, md.Len(), "MetadataV0 contains wrong number of values")

api/server/httprest/server_test.go

@@ -1,7 +1,6 @@
 package httprest
 
 import (
-	"context"
 	"flag"
 	"fmt"
 	"net"
@@ -34,7 +33,7 @@ func TestServer_StartStop(t *testing.T) {
 		WithRouter(handler),
 	}
 
-	g, err := New(context.Background(), opts...)
+	g, err := New(t.Context(), opts...)
 	require.NoError(t, err)
 
 	g.Start()
@@ -62,7 +61,7 @@ func TestServer_NilHandler_NotFoundHandlerRegistered(t *testing.T) {
 		WithRouter(handler),
 	}
 
-	g, err := New(context.Background(), opts...)
+	g, err := New(t.Context(), opts...)
 	require.NoError(t, err)
 
 	writer := httptest.NewRecorder()

api/server/middleware/BUILD.bazel

@@ -8,7 +8,11 @@ go_library(
     ],
     importpath = "github.com/OffchainLabs/prysm/v6/api/server/middleware",
     visibility = ["//visibility:public"],
-    deps = ["@com_github_rs_cors//:go_default_library"],
+    deps = [
+        "//api:go_default_library",
+        "@com_github_rs_cors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+    ],
 )
 
 go_test(
@@ -22,5 +26,6 @@ go_test(
         "//api:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
     ],
 )

api/server/middleware/middleware.go

@@ -1,11 +1,14 @@
 package middleware
 
 import (
+	"compress/gzip"
 	"fmt"
 	"net/http"
 	"strings"
 
+	"github.com/OffchainLabs/prysm/v6/api"
 	"github.com/rs/cors"
+	log "github.com/sirupsen/logrus"
 )
 
 type Middleware func(http.Handler) http.Handler
@@ -112,6 +115,55 @@ func AcceptHeaderHandler(serverAcceptedTypes []string) Middleware {
 	}
 }
 
+// AcceptEncodingHeaderHandler compresses the response before sending it back to the client, if gzip is supported.
+func AcceptEncodingHeaderHandler() Middleware {
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
+				next.ServeHTTP(w, r)
+				return
+			}
+
+			gz := gzip.NewWriter(w)
+			gzipRW := &gzipResponseWriter{gz: gz, ResponseWriter: w}
+			defer func() {
+				if !gzipRW.zip {
+					return
+				}
+				if err := gz.Close(); err != nil {
+					log.WithError(err).Error("Failed to close gzip writer")
+				}
+			}()
+
+			next.ServeHTTP(gzipRW, r)
+		})
+	}
+}
+
+type gzipResponseWriter struct {
+	gz *gzip.Writer
+	http.ResponseWriter
+	zip bool
+}
+
+func (g *gzipResponseWriter) WriteHeader(statusCode int) {
+	if strings.Contains(g.Header().Get("Content-Type"), api.JsonMediaType) {
+		// Removing the current Content-Length because zipping will change it.
+		g.Header().Del("Content-Length")
+		g.Header().Set("Content-Encoding", "gzip")
+		g.zip = true
+	}
+
+	g.ResponseWriter.WriteHeader(statusCode)
+}
+
+func (g *gzipResponseWriter) Write(b []byte) (int, error) {
+	if g.zip {
+		return g.gz.Write(b)
+	}
+	return g.ResponseWriter.Write(b)
+}
+
 func MiddlewareChain(h http.Handler, mw []Middleware) http.Handler {
 	if len(mw) < 1 {
 		return h

api/server/middleware/middleware_test.go

@@ -1,14 +1,35 @@
 package middleware
 
 import (
+	"bytes"
+	"compress/gzip"
+	"io"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/api"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
+	log "github.com/sirupsen/logrus"
 )
 
+// frozenHeaderRecorder allows asserting that response headers were not modified
+// after the call to WriteHeader.
+//
+// Its purpose is to have a regression test for https://github.com/OffchainLabs/prysm/pull/15499.
+type frozenHeaderRecorder struct {
+	*httptest.ResponseRecorder
+	frozenHeader http.Header
+}
+
+func (r *frozenHeaderRecorder) WriteHeader(code int) {
+	if r.frozenHeader != nil {
+		return
+	}
+	r.ResponseRecorder.WriteHeader(code)
+	r.frozenHeader = r.ResponseRecorder.Header().Clone()
+}
+
 func TestNormalizeQueryValuesHandler(t *testing.T) {
 	nextHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, err := w.Write([]byte("next handler"))
@@ -124,6 +145,90 @@ func TestContentTypeHandler(t *testing.T) {
 	}
 }
 
+func TestAcceptEncodingHeaderHandler(t *testing.T) {
+	dummyContent := "Test gzip middleware content"
+	nextHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", r.Header.Get("Accept"))
+		w.WriteHeader(http.StatusOK)
+		_, err := w.Write([]byte(dummyContent))
+		require.NoError(t, err)
+	})
+
+	handler := AcceptEncodingHeaderHandler()(nextHandler)
+
+	tests := []struct {
+		name             string
+		accept           string
+		acceptEncoding   string
+		expectCompressed bool
+	}{
+		{
+			name:             "Accept gzip",
+			accept:           api.JsonMediaType,
+			acceptEncoding:   "gzip",
+			expectCompressed: true,
+		},
+		{
+			name:             "Accept multiple encodings",
+			accept:           api.JsonMediaType,
+			acceptEncoding:   "deflate, gzip",
+			expectCompressed: true,
+		},
+		{
+			name:             "Accept unsupported encoding",
+			accept:           api.JsonMediaType,
+			acceptEncoding:   "deflate",
+			expectCompressed: false,
+		},
+		{
+			name:             "No accept encoding header",
+			accept:           api.JsonMediaType,
+			acceptEncoding:   "",
+			expectCompressed: false,
+		},
+		{
+			name:             "SSZ",
+			accept:           api.OctetStreamMediaType,
+			acceptEncoding:   "gzip",
+			expectCompressed: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := httptest.NewRequest("GET", "/", nil)
+			req.Header.Set("Accept", tt.accept)
+			if tt.acceptEncoding != "" {
+				req.Header.Set("Accept-Encoding", tt.acceptEncoding)
+			}
+			rr := &frozenHeaderRecorder{ResponseRecorder: httptest.NewRecorder()}
+
+			handler.ServeHTTP(rr, req)
+
+			if tt.expectCompressed {
+				require.Equal(t, "gzip", rr.frozenHeader.Get("Content-Encoding"), "Expected Content-Encoding header to be 'gzip'")
+
+				compressedBody := rr.Body.Bytes()
+				require.NotEqual(t, dummyContent, string(compressedBody), "Response body should be compressed and differ from the original")
+
+				gzReader, err := gzip.NewReader(bytes.NewReader(compressedBody))
+				require.NoError(t, err, "Failed to create gzipReader")
+				defer func() {
+					if err := gzReader.Close(); err != nil {
+						log.WithError(err).Error("Failed to close gzip reader")
+					}
+				}()
+
+				decompressedBody, err := io.ReadAll(gzReader)
+				require.NoError(t, err, "Failed to decompress response body")
+				require.Equal(t, dummyContent, string(decompressedBody), "Decompressed content should match the original")
+			} else {
+				require.Equal(t, dummyContent, rr.Body.String(), "Response body should be uncompressed and match the original")
+			}
+		})
+	}
+}
+
 func TestAcceptHeaderHandler(t *testing.T) {
 	acceptedTypes := []string{"application/json", "application/octet-stream"}
 

api/server/structs/conversions.go

@@ -133,6 +133,66 @@ func SignedBLSChangesFromConsensus(src []*eth.SignedBLSToExecutionChange) []*Sig
 	return changes
 }
 
+func SignedInclusionListFromConsensus(src *eth.SignedInclusionList) *SignedInclusionList {
+	transactions := make([]string, len(src.Message.Transactions))
+	for i, transaction := range src.Message.Transactions {
+		transactions[i] = hexutil.Encode(transaction)
+	}
+
+	return &SignedInclusionList{
+		Message: &InclusionList{
+			Slot:                       fmt.Sprintf("%d", src.Message.Slot),
+			ValidatorIndex:             fmt.Sprintf("%d", src.Message.ValidatorIndex),
+			InclusionListCommitteeRoot: hexutil.Encode(src.Message.InclusionListCommitteeRoot),
+			Transactions:               transactions,
+		},
+		Signature: hexutil.Encode(src.Signature),
+	}
+}
+
+func (s *SignedInclusionList) ToConsensus() (*eth.SignedInclusionList, error) {
+	message, err := s.Message.ToConsensus()
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Message")
+	}
+	signature, err := bytesutil.DecodeHexWithLength(s.Signature, fieldparams.BLSSignatureLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Signature")
+	}
+	return &eth.SignedInclusionList{
+		Message:   message,
+		Signature: signature,
+	}, nil
+}
+
+func (s *InclusionList) ToConsensus() (*eth.InclusionList, error) {
+	slot, err := strconv.ParseUint(s.Slot, 10, 64)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "Slot")
+	}
+	validatorIndex, err := strconv.ParseUint(s.ValidatorIndex, 10, 64)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "ValidatorIndex")
+	}
+	inclusionListCommitteeRoot, err := bytesutil.DecodeHexWithLength(s.InclusionListCommitteeRoot, fieldparams.RootLength)
+	if err != nil {
+		return nil, server.NewDecodeError(err, "InclusionListCommitteeRoot")
+	}
+	transactions := make([][]byte, len(s.Transactions))
+	for i, transaction := range s.Transactions {
+		transactions[i], err = bytesutil.DecodeHexWithMaxLength(transaction, fieldparams.MaxBytesPerTxLength)
+		if err != nil {
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Transactions[%d]", i))
+		}
+	}
+	return &eth.InclusionList{
+		Slot:                       primitives.Slot(slot),
+		ValidatorIndex:             primitives.ValidatorIndex(validatorIndex),
+		InclusionListCommitteeRoot: inclusionListCommitteeRoot,
+		Transactions:               transactions,
+	}, nil
+}
+
 func (s *Fork) ToConsensus() (*eth.Fork, error) {
 	previousVersion, err := bytesutil.DecodeHexWithLength(s.PreviousVersion, 4)
 	if err != nil {

api/server/structs/conversions_state.go

@@ -74,7 +74,7 @@ func BeaconStateFromConsensus(st beaconState.BeaconState) (*BeaconState, error)
 	}
 
 	return &BeaconState{
-		GenesisTime:                 fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                 fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:       hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                        fmt.Sprintf("%d", st.Slot()),
 		Fork:                        ForkFromConsensus(st.Fork()),
@@ -177,7 +177,7 @@ func BeaconStateAltairFromConsensus(st beaconState.BeaconState) (*BeaconStateAlt
 	}
 
 	return &BeaconStateAltair{
-		GenesisTime:                 fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                 fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:       hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                        fmt.Sprintf("%d", st.Slot()),
 		Fork:                        ForkFromConsensus(st.Fork()),
@@ -295,7 +295,7 @@ func BeaconStateBellatrixFromConsensus(st beaconState.BeaconState) (*BeaconState
 	}
 
 	return &BeaconStateBellatrix{
-		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:        hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                         fmt.Sprintf("%d", st.Slot()),
 		Fork:                         ForkFromConsensus(st.Fork()),
@@ -430,7 +430,7 @@ func BeaconStateCapellaFromConsensus(st beaconState.BeaconState) (*BeaconStateCa
 	}
 
 	return &BeaconStateCapella{
-		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:        hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                         fmt.Sprintf("%d", st.Slot()),
 		Fork:                         ForkFromConsensus(st.Fork()),
@@ -568,7 +568,7 @@ func BeaconStateDenebFromConsensus(st beaconState.BeaconState) (*BeaconStateDene
 	}
 
 	return &BeaconStateDeneb{
-		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                  fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:        hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                         fmt.Sprintf("%d", st.Slot()),
 		Fork:                         ForkFromConsensus(st.Fork()),
@@ -742,7 +742,7 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 	}
 
 	return &BeaconStateElectra{
-		GenesisTime:                   fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                   fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:         hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                          fmt.Sprintf("%d", st.Slot()),
 		Fork:                          ForkFromConsensus(st.Fork()),
@@ -923,9 +923,16 @@ func BeaconStateFuluFromConsensus(st beaconState.BeaconState) (*BeaconStateFulu,
 	if err != nil {
 		return nil, err
 	}
-
+	srcLookahead, err := st.ProposerLookahead()
+	if err != nil {
+		return nil, err
+	}
+	lookahead := make([]string, len(srcLookahead))
+	for i, v := range srcLookahead {
+		lookahead[i] = fmt.Sprintf("%d", uint64(v))
+	}
 	return &BeaconStateFulu{
-		GenesisTime:                   fmt.Sprintf("%d", st.GenesisTime()),
+		GenesisTime:                   fmt.Sprintf("%d", st.GenesisTime().Unix()),
 		GenesisValidatorsRoot:         hexutil.Encode(st.GenesisValidatorsRoot()),
 		Slot:                          fmt.Sprintf("%d", st.Slot()),
 		Fork:                          ForkFromConsensus(st.Fork()),
@@ -962,5 +969,6 @@ func BeaconStateFuluFromConsensus(st beaconState.BeaconState) (*BeaconStateFulu,
 		PendingDeposits:               PendingDepositsFromConsensus(pbd),
 		PendingPartialWithdrawals:     PendingPartialWithdrawalsFromConsensus(ppw),
 		PendingConsolidations:         PendingConsolidationsFromConsensus(pc),
+		ProposerLookahead:             lookahead,
 	}, nil
 }

api/server/structs/endpoints_events.go

@@ -25,6 +25,13 @@ type BlockGossipEvent struct {
 	Block string `json:"block"`
 }
 
+type DataColumnGossipEvent struct {
+	Slot           string   `json:"slot"`
+	Index          string   `json:"index"`
+	BlockRoot      string   `json:"block_root"`
+	KzgCommitments []string `json:"kzg_commitments"`
+}
+
 type AggregatedAttEventSource struct {
 	Aggregate *Attestation `json:"aggregate"`
 }
@@ -96,6 +103,11 @@ type BlobSidecarEvent struct {
 	VersionedHash string `json:"versioned_hash"`
 }
 
+type InclusionListEvent struct {
+	Version string               `json:"version"`
+	Data    *SignedInclusionList `json:"data"`
+}
+
 type LightClientFinalityUpdateEvent struct {
 	Version string                     `json:"version"`
 	Data    *LightClientFinalityUpdate `json:"data"`

api/server/structs/other.go

@@ -262,3 +262,15 @@ type PendingConsolidation struct {
 	SourceIndex string `json:"source_index"`
 	TargetIndex string `json:"target_index"`
 }
+
+type SignedInclusionList struct {
+	Message   *InclusionList `json:"message"`
+	Signature string         `json:"signature"`
+}
+
+type InclusionList struct {
+	Slot                       string   `json:"slot"`
+	ValidatorIndex             string   `json:"validator_index"`
+	InclusionListCommitteeRoot string   `json:"inclusion_list_committee_root"`
+	Transactions               []string `json:"transactions"`
+}

api/server/structs/state.go

@@ -219,4 +219,5 @@ type BeaconStateFulu struct {
 	PendingDeposits               []*PendingDeposit            `json:"pending_deposits"`
 	PendingPartialWithdrawals     []*PendingPartialWithdrawal  `json:"pending_partial_withdrawals"`
 	PendingConsolidations         []*PendingConsolidation      `json:"pending_consolidations"`
+	ProposerLookahead             []string                     `json:"proposer_lookahead"`
 }

async/debounce_test.go

@@ -15,7 +15,7 @@ import (
 
 func TestDebounce_NoEvents(t *testing.T) {
 	eventsChan := make(chan interface{}, 100)
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(t.Context())
 	interval := time.Second
 	timesHandled := int32(0)
 	wg := &sync.WaitGroup{}
@@ -39,7 +39,7 @@ func TestDebounce_NoEvents(t *testing.T) {
 
 func TestDebounce_CtxClosing(t *testing.T) {
 	eventsChan := make(chan interface{}, 100)
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(t.Context())
 	interval := time.Second
 	timesHandled := int32(0)
 	wg := &sync.WaitGroup{}
@@ -75,7 +75,7 @@ func TestDebounce_CtxClosing(t *testing.T) {
 
 func TestDebounce_SingleHandlerInvocation(t *testing.T) {
 	eventsChan := make(chan interface{}, 100)
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(t.Context())
 	interval := time.Second
 	timesHandled := int32(0)
 	go async.Debounce(ctx, interval, eventsChan, func(event interface{}) {
@@ -93,7 +93,7 @@ func TestDebounce_SingleHandlerInvocation(t *testing.T) {
 
 func TestDebounce_MultipleHandlerInvocation(t *testing.T) {
 	eventsChan := make(chan interface{}, 100)
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(t.Context())
 	interval := time.Second
 	timesHandled := int32(0)
 	go async.Debounce(ctx, interval, eventsChan, func(event interface{}) {

async/every.go

@@ -19,10 +19,10 @@ func RunEvery(ctx context.Context, period time.Duration, f func()) {
 		for {
 			select {
 			case <-ticker.C:
-				log.WithField("function", funcName).Trace("running")
+				log.WithField("function", funcName).Trace("Running")
 				f()
 			case <-ctx.Done():
-				log.WithField("function", funcName).Debug("context is closed, exiting")
+				log.WithField("function", funcName).Debug("Context is closed, exiting")
 				ticker.Stop()
 				return
 			}

async/every_test.go

@@ -10,7 +10,7 @@ import (
 )
 
 func TestEveryRuns(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
+	ctx, cancel := context.WithCancel(t.Context())
 
 	i := int32(0)
 	async.RunEvery(ctx, 100*time.Millisecond, func() {

beacon-chain/blockchain/BUILD.bazel

@@ -12,6 +12,7 @@ go_library(
         "forkchoice_update_execution.go",
         "head.go",
         "head_sync_committee_info.go",
+        "inclusion_list.go",
         "init_sync_process_block.go",
         "log.go",
         "merge_ascii_art.go",

beacon-chain/blockchain/chain_info.go

@@ -41,7 +41,8 @@ type ForkchoiceFetcher interface {
 	Ancestor(context.Context, []byte, primitives.Slot) ([]byte, error)
 	CachedHeadRoot() [32]byte
 	GetProposerHead() [32]byte
-	SetForkChoiceGenesisTime(uint64)
+	SetForkChoiceGenesisTime(time.Time)
+	GetAttesterHead() [32]byte
 	UpdateHead(context.Context, primitives.Slot)
 	HighestReceivedBlockSlot() primitives.Slot
 	ReceivedBlocksLastEpoch() (uint64, error)
@@ -514,7 +515,7 @@ func (s *Service) Ancestor(ctx context.Context, root []byte, slot primitives.Slo
 
 // SetGenesisTime sets the genesis time of beacon chain.
 func (s *Service) SetGenesisTime(t time.Time) {
-	s.genesisTime = t
+	s.genesisTime = t.Truncate(time.Second) // Genesis time has a precision of 1 second.
 }
 
 func (s *Service) recoverStateSummary(ctx context.Context, blockRoot [32]byte) (*ethpb.StateSummary, error) {

beacon-chain/blockchain/chain_info_forkchoice.go

@@ -2,6 +2,7 @@ package blockchain
 
 import (
 	"context"
+	"time"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
 	consensus_blocks "github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
@@ -26,8 +27,15 @@ func (s *Service) GetProposerHead() [32]byte {
 	return s.cfg.ForkChoiceStore.GetProposerHead()
 }
 
+// GetAttesterHead returns the corresponding value from forkchoice
+func (s *Service) GetAttesterHead() [32]byte {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.GetAttesterHead()
+}
+
 // SetForkChoiceGenesisTime sets the genesis time in Forkchoice
-func (s *Service) SetForkChoiceGenesisTime(timestamp uint64) {
+func (s *Service) SetForkChoiceGenesisTime(timestamp time.Time) {
 	s.cfg.ForkChoiceStore.Lock()
 	defer s.cfg.ForkChoiceStore.Unlock()
 	s.cfg.ForkChoiceStore.SetGenesisTime(timestamp)

beacon-chain/blockchain/chain_info_norace_test.go

@@ -1,12 +1,8 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 
-	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
-	"github.com/OffchainLabs/prysm/v6/beacon-chain/state/stategen"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
@@ -15,82 +11,71 @@ import (
 )
 
 func TestHeadSlot_DataRace(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg: &config{BeaconDB: beaconDB},
-	}
+	s := testServiceWithDB(t)
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisState(t, 1)
 	wait := make(chan struct{})
 	go func() {
 		defer close(wait)
-		require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+		require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 	}()
 	s.HeadSlot()
 	<-wait
 }
 
 func TestHeadRoot_DataRace(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg:  &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB, doublylinkedtree.New())},
-		head: &head{root: [32]byte{'A'}},
-	}
+	s := testServiceWithDB(t)
+	s.head = &head{root: [32]byte{'A'}}
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	wait := make(chan struct{})
 	st, _ := util.DeterministicGenesisState(t, 1)
 	go func() {
 		defer close(wait)
-		require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+		require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 
 	}()
-	_, err = s.HeadRoot(context.Background())
+	_, err = s.HeadRoot(t.Context())
 	require.NoError(t, err)
 	<-wait
 }
 
 func TestHeadBlock_DataRace(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
 	wsb, err := blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlock{Block: &ethpb.BeaconBlock{Body: &ethpb.BeaconBlockBody{}}})
 	require.NoError(t, err)
-	s := &Service{
-		cfg:  &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB, doublylinkedtree.New())},
-		head: &head{block: wsb},
-	}
+	s := testServiceWithDB(t)
+	s.head = &head{block: wsb}
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	wait := make(chan struct{})
 	st, _ := util.DeterministicGenesisState(t, 1)
 	go func() {
 		defer close(wait)
-		require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+		require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 
 	}()
-	_, err = s.HeadBlock(context.Background())
+	_, err = s.HeadBlock(t.Context())
 	require.NoError(t, err)
 	<-wait
 }
 
 func TestHeadState_DataRace(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg: &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB, doublylinkedtree.New())},
-	}
+	s := testServiceWithDB(t)
+	beaconDB := s.cfg.BeaconDB
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	wait := make(chan struct{})
 	st, _ := util.DeterministicGenesisState(t, 1)
 	root := bytesutil.ToBytes32(bytesutil.PadTo([]byte{'s'}, 32))
-	require.NoError(t, beaconDB.SaveGenesisBlockRoot(context.Background(), root))
-	require.NoError(t, beaconDB.SaveState(context.Background(), st, root))
+	require.NoError(t, beaconDB.SaveGenesisBlockRoot(t.Context(), root))
+	require.NoError(t, beaconDB.SaveState(t.Context(), st, root))
 	go func() {
 		defer close(wait)
-		require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+		require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 
 	}()
-	_, err = s.HeadState(context.Background())
+	_, err = s.HeadState(t.Context())
 	require.NoError(t, err)
 	<-wait
 }

beacon-chain/blockchain/chain_info_test.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
 	state_native "github.com/OffchainLabs/prysm/v6/beacon-chain/state/state-native"
@@ -84,7 +83,7 @@ func prepareForkchoiceState(
 func TestHeadRoot_Nil(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
 	c := setupBeaconChain(t, beaconDB)
-	headRoot, err := c.HeadRoot(context.Background())
+	headRoot, err := c.HeadRoot(t.Context())
 	require.NoError(t, err)
 	assert.DeepEqual(t, params.BeaconConfig().ZeroHash[:], headRoot, "Incorrect pre chain start value")
 }
@@ -137,8 +136,8 @@ func TestFinalizedBlockHash(t *testing.T) {
 }
 
 func TestUnrealizedJustifiedBlockHash(t *testing.T) {
-	ctx := context.Background()
-	service := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}}
+	ctx := t.Context()
+	service := testServiceWithDB(t)
 	ojc := &ethpb.Checkpoint{Root: []byte{'j'}}
 	ofc := &ethpb.Checkpoint{Root: []byte{'f'}}
 	st, roblock, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
@@ -153,7 +152,7 @@ func TestUnrealizedJustifiedBlockHash(t *testing.T) {
 }
 
 func TestHeadSlot_CanRetrieve(t *testing.T) {
-	c := &Service{}
+	c := testServiceNoDB(t)
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{})
 	require.NoError(t, err)
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
@@ -200,10 +199,10 @@ func TestHeadBlock_CanRetrieve(t *testing.T) {
 	require.NoError(t, err)
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{block: wsb, state: s}
 
-	received, err := c.HeadBlock(context.Background())
+	received, err := c.HeadBlock(t.Context())
 	require.NoError(t, err)
 	pb, err := received.Proto()
 	require.NoError(t, err)
@@ -213,15 +212,16 @@ func TestHeadBlock_CanRetrieve(t *testing.T) {
 func TestHeadState_CanRetrieve(t *testing.T) {
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{Slot: 2, GenesisValidatorsRoot: params.BeaconConfig().ZeroHash[:]})
 	require.NoError(t, err)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{state: s}
-	headState, err := c.HeadState(context.Background())
+	headState, err := c.HeadState(t.Context())
 	require.NoError(t, err)
 	assert.DeepEqual(t, headState.ToProtoUnsafe(), s.ToProtoUnsafe(), "Incorrect head state received")
 }
 
 func TestGenesisTime_CanRetrieve(t *testing.T) {
-	c := &Service{genesisTime: time.Unix(999, 0)}
+	c := testServiceNoDB(t)
+	c.genesisTime = time.Unix(999, 0)
 	wanted := time.Unix(999, 0)
 	assert.Equal(t, wanted, c.GenesisTime(), "Did not get wanted genesis time")
 }
@@ -230,7 +230,7 @@ func TestCurrentFork_CanRetrieve(t *testing.T) {
 	f := &ethpb.Fork{Epoch: 999}
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{Fork: f})
 	require.NoError(t, err)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{state: s}
 	if !proto.Equal(c.CurrentFork(), f) {
 		t.Error("Received incorrect fork version")
@@ -242,7 +242,7 @@ func TestCurrentFork_NilHeadSTate(t *testing.T) {
 		PreviousVersion: params.BeaconConfig().GenesisForkVersion,
 		CurrentVersion:  params.BeaconConfig().GenesisForkVersion,
 	}
-	c := &Service{}
+	c := testServiceNoDB(t)
 	if !proto.Equal(c.CurrentFork(), f) {
 		t.Error("Received incorrect fork version")
 	}
@@ -250,7 +250,7 @@ func TestCurrentFork_NilHeadSTate(t *testing.T) {
 
 func TestGenesisValidatorsRoot_CanRetrieve(t *testing.T) {
 	// Should not panic if head state is nil.
-	c := &Service{}
+	c := testServiceNoDB(t)
 	assert.Equal(t, [32]byte{}, c.GenesisValidatorsRoot(), "Did not get correct genesis validators root")
 
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{GenesisValidatorsRoot: []byte{'a'}})
@@ -269,7 +269,7 @@ func TestHeadETH1Data_CanRetrieve(t *testing.T) {
 	d := &ethpb.Eth1Data{DepositCount: 999}
 	s, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{Eth1Data: d})
 	require.NoError(t, err)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{state: s}
 	if !proto.Equal(c.HeadETH1Data(), d) {
 		t.Error("Received incorrect eth1 data")
@@ -277,7 +277,7 @@ func TestHeadETH1Data_CanRetrieve(t *testing.T) {
 }
 
 func TestIsCanonical_Ok(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	c := setupBeaconChain(t, beaconDB)
 
@@ -298,22 +298,22 @@ func TestIsCanonical_Ok(t *testing.T) {
 
 func TestService_HeadValidatorsIndices(t *testing.T) {
 	s, _ := util.DeterministicGenesisState(t, 10)
-	c := &Service{}
+	c := testServiceNoDB(t)
 
 	c.head = &head{}
-	indices, err := c.HeadValidatorsIndices(context.Background(), 0)
+	indices, err := c.HeadValidatorsIndices(t.Context(), 0)
 	require.NoError(t, err)
 	require.Equal(t, 0, len(indices))
 
 	c.head = &head{state: s}
-	indices, err = c.HeadValidatorsIndices(context.Background(), 0)
+	indices, err = c.HeadValidatorsIndices(t.Context(), 0)
 	require.NoError(t, err)
 	require.Equal(t, 10, len(indices))
 }
 
 func TestService_HeadGenesisValidatorsRoot(t *testing.T) {
 	s, _ := util.DeterministicGenesisState(t, 1)
-	c := &Service{}
+	c := testServiceNoDB(t)
 
 	c.head = &head{}
 	root := c.HeadGenesisValidatorsRoot()
@@ -331,8 +331,8 @@ func TestService_HeadGenesisValidatorsRoot(t *testing.T) {
 //     ---------- D
 
 func TestService_ChainHeads(t *testing.T) {
-	ctx := context.Background()
-	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	st, roblock, err := prepareForkchoiceState(ctx, 0, [32]byte{}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
@@ -366,7 +366,7 @@ func TestService_ChainHeads(t *testing.T) {
 
 func TestService_HeadPublicKeyToValidatorIndex(t *testing.T) {
 	s, _ := util.DeterministicGenesisState(t, 10)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{state: s}
 
 	_, e := c.HeadPublicKeyToValidatorIndex([fieldparams.BLSPubkeyLength]byte{})
@@ -381,7 +381,7 @@ func TestService_HeadPublicKeyToValidatorIndex(t *testing.T) {
 }
 
 func TestService_HeadPublicKeyToValidatorIndexNil(t *testing.T) {
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = nil
 
 	idx, e := c.HeadPublicKeyToValidatorIndex([fieldparams.BLSPubkeyLength]byte{})
@@ -396,10 +396,10 @@ func TestService_HeadPublicKeyToValidatorIndexNil(t *testing.T) {
 
 func TestService_HeadValidatorIndexToPublicKey(t *testing.T) {
 	s, _ := util.DeterministicGenesisState(t, 10)
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = &head{state: s}
 
-	p, err := c.HeadValidatorIndexToPublicKey(context.Background(), 0)
+	p, err := c.HeadValidatorIndexToPublicKey(t.Context(), 0)
 	require.NoError(t, err)
 
 	v, err := s.ValidatorAtIndex(0)
@@ -409,15 +409,15 @@ func TestService_HeadValidatorIndexToPublicKey(t *testing.T) {
 }
 
 func TestService_HeadValidatorIndexToPublicKeyNil(t *testing.T) {
-	c := &Service{}
+	c := testServiceNoDB(t)
 	c.head = nil
 
-	p, err := c.HeadValidatorIndexToPublicKey(context.Background(), 0)
+	p, err := c.HeadValidatorIndexToPublicKey(t.Context(), 0)
 	require.NoError(t, err)
 	require.Equal(t, [fieldparams.BLSPubkeyLength]byte{}, p)
 
 	c.head = &head{state: nil}
-	p, err = c.HeadValidatorIndexToPublicKey(context.Background(), 0)
+	p, err = c.HeadValidatorIndexToPublicKey(t.Context(), 0)
 	require.NoError(t, err)
 	require.Equal(t, [fieldparams.BLSPubkeyLength]byte{}, p)
 }
@@ -428,10 +428,12 @@ func TestService_IsOptimistic(t *testing.T) {
 	cfg.BellatrixForkEpoch = 0
 	params.OverrideBeaconConfig(cfg)
 
-	ctx := context.Background()
+	ctx := t.Context()
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
-	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	c := testServiceWithDB(t)
+	c.SetGenesisTime(time.Now())
+	c.head = &head{root: [32]byte{'b'}}
 	st, roblock, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
 	require.NoError(t, err)
 	require.NoError(t, c.cfg.ForkChoiceStore.InsertNode(ctx, st, roblock))
@@ -450,22 +452,24 @@ func TestService_IsOptimistic(t *testing.T) {
 	require.Equal(t, true, opt)
 
 	// If head is nil, for some reason, an error should be returned rather than panic.
-	c = &Service{}
+	c = testServiceNoDB(t)
 	_, err = c.IsOptimistic(ctx)
 	require.ErrorIs(t, err, ErrNilHead)
 }
 
 func TestService_IsOptimisticBeforeBellatrix(t *testing.T) {
-	ctx := context.Background()
-	c := &Service{genesisTime: time.Now()}
+	ctx := t.Context()
+	c := testServiceNoDB(t)
+	c.genesisTime = time.Now()
 	opt, err := c.IsOptimistic(ctx)
 	require.NoError(t, err)
 	require.Equal(t, false, opt)
 }
 
 func TestService_IsOptimisticForRoot(t *testing.T) {
-	ctx := context.Background()
-	c := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
+	c.head = &head{root: [32]byte{'b'}}
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	st, roblock, err := prepareForkchoiceState(ctx, 100, [32]byte{'a'}, [32]byte{}, params.BeaconConfig().ZeroHash, ojc, ofc)
@@ -481,28 +485,29 @@ func TestService_IsOptimisticForRoot(t *testing.T) {
 }
 
 func TestService_IsOptimisticForRoot_DB(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-	c := &Service{cfg: &config{BeaconDB: beaconDB, ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
+	c.head = &head{root: [32]byte{'b'}}
+	beaconDB := c.cfg.BeaconDB
 	c.head = &head{root: params.BeaconConfig().ZeroHash}
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 10
 	br, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, b)
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: br[:], Slot: 10}))
+	util.SaveBlock(t, t.Context(), beaconDB, b)
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: br[:], Slot: 10}))
 
 	optimisticBlock := util.NewBeaconBlock()
 	optimisticBlock.Block.Slot = 97
 	optimisticRoot, err := optimisticBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, optimisticBlock)
+	util.SaveBlock(t, t.Context(), beaconDB, optimisticBlock)
 
 	validatedBlock := util.NewBeaconBlock()
 	validatedBlock.Block.Slot = 9
 	validatedRoot, err := validatedBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, validatedBlock)
+	util.SaveBlock(t, t.Context(), beaconDB, validatedBlock)
 
 	validatedCheckpoint := &ethpb.Checkpoint{Root: br[:]}
 	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, validatedCheckpoint))
@@ -524,48 +529,48 @@ func TestService_IsOptimisticForRoot_DB(t *testing.T) {
 	// Before the first finalized epoch, finalized root could be zeros.
 	validatedCheckpoint = &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, br))
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: params.BeaconConfig().ZeroHash[:], Slot: 10}))
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: params.BeaconConfig().ZeroHash[:], Slot: 10}))
 	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, validatedCheckpoint))
 
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: optimisticRoot[:], Slot: 11}))
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: optimisticRoot[:], Slot: 11}))
 	optimistic, err = c.IsOptimisticForRoot(ctx, optimisticRoot)
 	require.NoError(t, err)
 	require.Equal(t, true, optimistic)
 }
 
 func TestService_IsOptimisticForRoot_DB_non_canonical(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-	c := &Service{cfg: &config{BeaconDB: beaconDB, ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
+	beaconDB := c.cfg.BeaconDB
 	c.head = &head{root: params.BeaconConfig().ZeroHash}
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 10
 	br, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, b)
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: br[:], Slot: 10}))
+	util.SaveBlock(t, t.Context(), beaconDB, b)
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: br[:], Slot: 10}))
 
 	optimisticBlock := util.NewBeaconBlock()
 	optimisticBlock.Block.Slot = 97
 	optimisticRoot, err := optimisticBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, optimisticBlock)
+	util.SaveBlock(t, t.Context(), beaconDB, optimisticBlock)
 
 	validatedBlock := util.NewBeaconBlock()
 	validatedBlock.Block.Slot = 9
 	validatedRoot, err := validatedBlock.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, validatedBlock)
+	util.SaveBlock(t, t.Context(), beaconDB, validatedBlock)
 
 	validatedCheckpoint := &ethpb.Checkpoint{Root: br[:]}
 	require.NoError(t, beaconDB.SaveLastValidatedCheckpoint(ctx, validatedCheckpoint))
 
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: optimisticRoot[:], Slot: 11}))
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: optimisticRoot[:], Slot: 11}))
 	optimistic, err := c.IsOptimisticForRoot(ctx, optimisticRoot)
 	require.NoError(t, err)
 	require.Equal(t, true, optimistic)
 
-	require.NoError(t, beaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Root: validatedRoot[:], Slot: 9}))
+	require.NoError(t, beaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Root: validatedRoot[:], Slot: 9}))
 	validated, err := c.IsOptimisticForRoot(ctx, validatedRoot)
 	require.NoError(t, err)
 	require.Equal(t, true, validated)
@@ -573,15 +578,15 @@ func TestService_IsOptimisticForRoot_DB_non_canonical(t *testing.T) {
 }
 
 func TestService_IsOptimisticForRoot_StateSummaryRecovered(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-	c := &Service{cfg: &config{BeaconDB: beaconDB, ForkChoiceStore: doublylinkedtree.New()}, head: &head{root: [32]byte{'b'}}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
+	beaconDB := c.cfg.BeaconDB
 	c.head = &head{root: params.BeaconConfig().ZeroHash}
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 10
 	br, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
-	util.SaveBlock(t, context.Background(), beaconDB, b)
+	util.SaveBlock(t, t.Context(), beaconDB, b)
 	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, [32]byte{}))
 	_, err = c.IsOptimisticForRoot(ctx, br)
 	assert.NoError(t, err)
@@ -593,9 +598,9 @@ func TestService_IsOptimisticForRoot_StateSummaryRecovered(t *testing.T) {
 }
 
 func TestService_IsFinalized(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-	c := &Service{cfg: &config{BeaconDB: beaconDB, ForkChoiceStore: doublylinkedtree.New()}}
+	ctx := t.Context()
+	c := testServiceWithDB(t)
+	beaconDB := c.cfg.BeaconDB
 	r1 := [32]byte{'a'}
 	require.NoError(t, c.cfg.ForkChoiceStore.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{
 		Root: r1,
@@ -616,7 +621,7 @@ func TestService_IsFinalized(t *testing.T) {
 
 func Test_hashForGenesisRoot(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
+	ctx := t.Context()
 	c := setupBeaconChain(t, beaconDB)
 	st, _ := util.DeterministicGenesisStateElectra(t, 10)
 	require.NoError(t, c.cfg.BeaconDB.SaveGenesisData(ctx, st))

beacon-chain/blockchain/defragment.go

@@ -2,7 +2,6 @@ package blockchain
 
 import (
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v6/config/features"
 	"github.com/OffchainLabs/prysm/v6/time"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
@@ -17,9 +16,6 @@ var stateDefragmentationTime = promauto.NewSummary(prometheus.SummaryOpts{
 // a higher number of fragmented indexes are reallocated to a new separate slice for
 // that field.
 func (s *Service) defragmentState(st state.BeaconState) {
-	if !features.Get().EnableExperimentalState {
-		return
-	}
 	startTime := time.Now()
 	st.Defragment()
 	elapsedTime := time.Since(startTime)

beacon-chain/blockchain/execution_engine.go

@@ -141,7 +141,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 			}
 
 			if err := s.saveHead(ctx, r, b, st); err != nil {
-				log.WithError(err).Error("could not save head after pruning invalid blocks")
+				log.WithError(err).Error("Could not save head after pruning invalid blocks")
 			}
 
 			log.WithFields(logrus.Fields{
@@ -267,12 +267,25 @@ func (s *Service) notifyNewPayload(ctx context.Context, preStateVersion int,
 			return false, errors.New("nil execution requests")
 		}
 	}
-	lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, versionedHashes, parentRoot, requests)
+
+	var txs [][]byte
+	// Post-FOCIL, only consider the inclusion list constraint if it matches the current slot.
+	if slots.ToEpoch(s.CurrentSlot()) >= params.BeaconConfig().Eip7805ForkEpoch && s.CurrentSlot() == blk.Block().Slot() {
+		txs = s.inclusionListCache.Get(blk.Block().Slot() - 1)
+	}
+	lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, versionedHashes, parentRoot, requests, txs)
 
 	switch {
 	case err == nil:
 		newPayloadValidNodeCount.Inc()
 		return true, nil
+	case errors.Is(err, execution.ErrBadInclusionListPayloadStatus):
+		log.WithFields(logrus.Fields{
+			"slot":       blk.Block().Slot(),
+			"parentRoot": fmt.Sprintf("%#x", parentRoot),
+		}).Info("Called new payload but inclusion list didn't satisfy")
+		blk.Block().MarkInclusionListNotSatisfied() // Cache the block root that fails to satisfy the inclusion list constraint.
+		return true, nil
 	case errors.Is(err, execution.ErrAcceptedSyncingPayloadStatus):
 		newPayloadOptimisticNodeCount.Inc()
 		log.WithFields(logrus.Fields{
@@ -354,7 +367,7 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 	}
 
 	// Get timestamp.
-	t, err := slots.ToTime(uint64(s.genesisTime.Unix()), slot)
+	t, err := slots.StartTime(s.genesisTime, slot)
 	if err != nil {
 		log.WithError(err).Error("Could not get timestamp to get payload attribute")
 		return emptyAttri

beacon-chain/blockchain/forkchoice_update_execution.go

@@ -76,14 +76,14 @@ func (s *Service) sendFCUWithAttributes(cfg *postBlockProcessConfig, fcuArgs *fc
 	s.cfg.ForkChoiceStore.RLock()
 	defer s.cfg.ForkChoiceStore.RUnlock()
 	if err := s.computePayloadAttributes(cfg, fcuArgs); err != nil {
-		log.WithError(err).Error("could not compute payload attributes")
+		log.WithError(err).Error("Could not compute payload attributes")
 		return
 	}
 	if fcuArgs.attributes.IsEmpty() {
 		return
 	}
 	if _, err := s.notifyForkchoiceUpdate(cfg.ctx, fcuArgs); err != nil {
-		log.WithError(err).Error("could not update forkchoice with payload attributes for proposal")
+		log.WithError(err).Error("Could not update forkchoice with payload attributes for proposal")
 	}
 }
 
@@ -99,7 +99,7 @@ func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, args *fcuCo
 	}
 
 	if err := s.saveHead(ctx, args.headRoot, args.headBlock, args.headState); err != nil {
-		log.WithError(err).Error("could not save head")
+		log.WithError(err).Error("Could not save head")
 	}
 
 	go s.firePayloadAttributesEvent(s.cfg.StateNotifier.StateFeed(), args.headBlock, args.headRoot, s.CurrentSlot()+1)
@@ -114,7 +114,7 @@ func (s *Service) forkchoiceUpdateWithExecution(ctx context.Context, args *fcuCo
 func (s *Service) shouldOverrideFCU(newHeadRoot [32]byte, proposingSlot primitives.Slot) bool {
 	headWeight, err := s.cfg.ForkChoiceStore.Weight(newHeadRoot)
 	if err != nil {
-		log.WithError(err).WithField("root", fmt.Sprintf("%#x", newHeadRoot)).Warn("could not determine node weight")
+		log.WithError(err).WithField("root", fmt.Sprintf("%#x", newHeadRoot)).Warn("Could not determine node weight")
 	}
 	currentSlot := s.CurrentSlot()
 	if proposingSlot == currentSlot {
@@ -132,17 +132,17 @@ func (s *Service) shouldOverrideFCU(newHeadRoot [32]byte, proposingSlot primitiv
 		if s.cfg.ForkChoiceStore.ShouldOverrideFCU() {
 			return true
 		}
-		secs, err := slots.SecondsSinceSlotStart(currentSlot,
-			uint64(s.genesisTime.Unix()), uint64(time.Now().Unix()))
+		sss, err := slots.SinceSlotStart(currentSlot, s.genesisTime, time.Now())
 		if err != nil {
-			log.WithError(err).Error("could not compute seconds since slot start")
+			log.WithError(err).Error("Could not compute seconds since slot start")
 		}
-		if secs >= doublylinkedtree.ProcessAttestationsThreshold {
+		if sss >= doublylinkedtree.ProcessAttestationsThreshold {
 			log.WithFields(logrus.Fields{
-				"root":   fmt.Sprintf("%#x", newHeadRoot),
-				"weight": headWeight,
-			}).Infof("Attempted late block reorg aborted due to attestations at %d seconds",
-				doublylinkedtree.ProcessAttestationsThreshold)
+				"root":           fmt.Sprintf("%#x", newHeadRoot),
+				"weight":         headWeight,
+				"sinceSlotStart": sss,
+				"threshold":      doublylinkedtree.ProcessAttestationsThreshold,
+			}).Info("Attempted late block reorg aborted due to attestations after threshold")
 			lateBlockFailedAttemptFirstThreshold.Inc()
 		}
 	}

beacon-chain/blockchain/forkchoice_update_execution_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 	"time"
 
@@ -36,29 +35,29 @@ func TestService_isNewHead(t *testing.T) {
 func TestService_getHeadStateAndBlock(t *testing.T) {
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
-	_, _, err := service.getStateAndBlock(context.Background(), [32]byte{})
+	_, _, err := service.getStateAndBlock(t.Context(), [32]byte{})
 	require.ErrorContains(t, "block does not exist", err)
 
 	blk, err := blocks.NewSignedBeaconBlock(util.HydrateSignedBeaconBlock(&ethpb.SignedBeaconBlock{Signature: []byte{1}}))
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.BeaconDB.SaveBlock(context.Background(), blk))
+	require.NoError(t, service.cfg.BeaconDB.SaveBlock(t.Context(), blk))
 
 	st, _ := util.DeterministicGenesisState(t, 1)
 	r, err := blk.Block().HashTreeRoot()
 	require.NoError(t, err)
-	require.NoError(t, service.cfg.BeaconDB.SaveState(context.Background(), st, r))
+	require.NoError(t, service.cfg.BeaconDB.SaveState(t.Context(), st, r))
 
-	gotState, err := service.cfg.BeaconDB.State(context.Background(), r)
+	gotState, err := service.cfg.BeaconDB.State(t.Context(), r)
 	require.NoError(t, err)
 	require.DeepEqual(t, st.ToProto(), gotState.ToProto())
 
-	gotBlk, err := service.cfg.BeaconDB.Block(context.Background(), r)
+	gotBlk, err := service.cfg.BeaconDB.Block(t.Context(), r)
 	require.NoError(t, err)
 	require.DeepEqual(t, blk, gotBlk)
 }
 
 func TestService_forkchoiceUpdateWithExecution_exceptionalCases(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	opts := testServiceOptsWithDB(t)
 
 	service, err := NewService(ctx, opts...)
@@ -161,6 +160,7 @@ func TestShouldOverrideFCU(t *testing.T) {
 	ctx, fcs := tr.ctx, tr.fcs
 
 	service.SetGenesisTime(time.Now().Add(-time.Duration(2*params.BeaconConfig().SecondsPerSlot) * time.Second))
+	fcs.SetGenesisTime(time.Now().Add(-time.Duration(2*params.BeaconConfig().SecondsPerSlot) * time.Second))
 	headRoot := [32]byte{'b'}
 	parentRoot := [32]byte{'a'}
 	ojc := &ethpb.Checkpoint{}
@@ -181,11 +181,12 @@ func TestShouldOverrideFCU(t *testing.T) {
 	require.NoError(t, err)
 	require.Equal(t, headRoot, head)
 
-	fcs.SetGenesisTime(uint64(time.Now().Unix()) - 29)
+	wantLog := "aborted due to attestations after threshold"
+	fcs.SetGenesisTime(time.Now().Add(-29 * time.Second))
 	require.Equal(t, true, service.shouldOverrideFCU(parentRoot, 3))
-	require.LogsDoNotContain(t, hook, "10 seconds")
-	fcs.SetGenesisTime(uint64(time.Now().Unix()) - 24)
+	require.LogsDoNotContain(t, hook, wantLog)
+	fcs.SetGenesisTime(time.Now().Add(-24 * time.Second))
 	service.SetGenesisTime(time.Now().Add(-time.Duration(2*params.BeaconConfig().SecondsPerSlot+10) * time.Second))
 	require.Equal(t, false, service.shouldOverrideFCU(parentRoot, 3))
-	require.LogsContain(t, hook, "10 seconds")
+	require.LogsContain(t, hook, wantLog)
 }

beacon-chain/blockchain/head.go

@@ -98,7 +98,7 @@ func (s *Service) saveHead(ctx context.Context, newHeadRoot [32]byte, headBlock
 	oldHeadRoot := bytesutil.ToBytes32(r)
 	isOptimistic, err := s.cfg.ForkChoiceStore.IsOptimistic(newHeadRoot)
 	if err != nil {
-		log.WithError(err).Error("could not check if node is optimistically synced")
+		log.WithError(err).Error("Could not check if node is optimistically synced")
 	}
 	if headBlock.Block().ParentRoot() != oldHeadRoot {
 		// A chain re-org occurred, so we fire an event notifying the rest of the services.
@@ -111,11 +111,11 @@ func (s *Service) saveHead(ctx context.Context, newHeadRoot [32]byte, headBlock
 		dep := math.Max(uint64(headSlot-forkSlot), uint64(newHeadSlot-forkSlot))
 		oldWeight, err := s.cfg.ForkChoiceStore.Weight(oldHeadRoot)
 		if err != nil {
-			log.WithField("root", fmt.Sprintf("%#x", oldHeadRoot)).Warn("could not determine node weight")
+			log.WithField("root", fmt.Sprintf("%#x", oldHeadRoot)).Warn("Could not determine node weight")
 		}
 		newWeight, err := s.cfg.ForkChoiceStore.Weight(newHeadRoot)
 		if err != nil {
-			log.WithField("root", fmt.Sprintf("%#x", newHeadRoot)).Warn("could not determine node weight")
+			log.WithField("root", fmt.Sprintf("%#x", newHeadRoot)).Warn("Could not determine node weight")
 		}
 		log.WithFields(logrus.Fields{
 			"newSlot":            fmt.Sprintf("%d", newHeadSlot),

beacon-chain/blockchain/head_sync_committee_info.go

@@ -18,9 +18,6 @@ import (
 	"github.com/pkg/errors"
 )
 
-// Initialize the state cache for sync committees.
-var syncCommitteeHeadStateCache = cache.NewSyncCommitteeHeadState()
-
 // HeadSyncCommitteeFetcher is the interface that wraps the head sync committee related functions.
 // The head sync committee functions return callers sync committee indices and public keys with respect to current head state.
 type HeadSyncCommitteeFetcher interface {
@@ -143,7 +140,7 @@ func (s *Service) getSyncCommitteeHeadState(ctx context.Context, slot primitives
 	defer mLock.Unlock()
 
 	// If there's already a head state exists with the request slot, we don't need to process slots.
-	cachedState, err := syncCommitteeHeadStateCache.Get(slot)
+	cachedState, err := s.syncCommitteeHeadState.Get(slot)
 	switch {
 	case err == nil:
 		syncHeadStateHit.Inc()
@@ -166,7 +163,7 @@ func (s *Service) getSyncCommitteeHeadState(ctx context.Context, slot primitives
 			return nil, err
 		}
 		syncHeadStateMiss.Inc()
-		err = syncCommitteeHeadStateCache.Put(slot, headState)
+		err = s.syncCommitteeHeadState.Put(slot, headState)
 		return headState, err
 	default:
 		// In the event, we encounter another error

beacon-chain/blockchain/head_sync_committee_info_test.go

@@ -1,12 +1,10 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/cache"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/signing"
-	dbTest "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
 	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
@@ -16,35 +14,35 @@ import (
 
 func TestService_HeadSyncCommitteeIndices(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{cfg: &config{BeaconDB: dbTest.SetupDB(t)}}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	// Current period
 	slot := 2*uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) + 1
-	a, err := c.HeadSyncCommitteeIndices(context.Background(), 0, primitives.Slot(slot))
+	a, err := c.HeadSyncCommitteeIndices(t.Context(), 0, primitives.Slot(slot))
 	require.NoError(t, err)
 
 	// Current period where slot-2 across EPOCHS_PER_SYNC_COMMITTEE_PERIOD
 	slot = 3*uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) - 2
-	b, err := c.HeadSyncCommitteeIndices(context.Background(), 0, primitives.Slot(slot))
+	b, err := c.HeadSyncCommitteeIndices(t.Context(), 0, primitives.Slot(slot))
 	require.NoError(t, err)
 	require.DeepEqual(t, a, b)
 
 	// Next period where slot-1 across EPOCHS_PER_SYNC_COMMITTEE_PERIOD
 	slot = 3*uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) - 1
-	b, err = c.HeadSyncCommitteeIndices(context.Background(), 0, primitives.Slot(slot))
+	b, err = c.HeadSyncCommitteeIndices(t.Context(), 0, primitives.Slot(slot))
 	require.NoError(t, err)
 	require.DeepNotEqual(t, a, b)
 }
 
 func TestService_headCurrentSyncCommitteeIndices(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{cfg: &config{BeaconDB: dbTest.SetupDB(t)}}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	// Process slot up to `EpochsPerSyncCommitteePeriod` so it can `ProcessSyncCommitteeUpdates`.
 	slot := uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) + 1
-	indices, err := c.headCurrentSyncCommitteeIndices(context.Background(), 0, primitives.Slot(slot))
+	indices, err := c.headCurrentSyncCommitteeIndices(t.Context(), 0, primitives.Slot(slot))
 	require.NoError(t, err)
 
 	// NextSyncCommittee becomes CurrentSyncCommittee so it should be empty by default.
@@ -53,12 +51,12 @@ func TestService_headCurrentSyncCommitteeIndices(t *testing.T) {
 
 func TestService_headNextSyncCommitteeIndices(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	// Process slot up to `EpochsPerSyncCommitteePeriod` so it can `ProcessSyncCommitteeUpdates`.
 	slot := uint64(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) + 1
-	indices, err := c.headNextSyncCommitteeIndices(context.Background(), 0, primitives.Slot(slot))
+	indices, err := c.headNextSyncCommitteeIndices(t.Context(), 0, primitives.Slot(slot))
 	require.NoError(t, err)
 
 	// NextSyncCommittee should be empty after `ProcessSyncCommitteeUpdates`. Validator should get indices.
@@ -67,12 +65,12 @@ func TestService_headNextSyncCommitteeIndices(t *testing.T) {
 
 func TestService_HeadSyncCommitteePubKeys(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{cfg: &config{BeaconDB: dbTest.SetupDB(t)}}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	// Process slot up to 2 * `EpochsPerSyncCommitteePeriod` so it can run `ProcessSyncCommitteeUpdates` twice.
 	slot := uint64(2*params.BeaconConfig().EpochsPerSyncCommitteePeriod)*uint64(params.BeaconConfig().SlotsPerEpoch) + 1
-	pubkeys, err := c.HeadSyncCommitteePubKeys(context.Background(), primitives.Slot(slot), 0)
+	pubkeys, err := c.HeadSyncCommitteePubKeys(t.Context(), primitives.Slot(slot), 0)
 	require.NoError(t, err)
 
 	// Any subcommittee should match the subcommittee size.
@@ -82,13 +80,13 @@ func TestService_HeadSyncCommitteePubKeys(t *testing.T) {
 
 func TestService_HeadSyncCommitteeDomain(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{cfg: &config{BeaconDB: dbTest.SetupDB(t)}}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	wanted, err := signing.Domain(s.Fork(), slots.ToEpoch(s.Slot()), params.BeaconConfig().DomainSyncCommittee, s.GenesisValidatorsRoot())
 	require.NoError(t, err)
 
-	d, err := c.HeadSyncCommitteeDomain(context.Background(), 0)
+	d, err := c.HeadSyncCommitteeDomain(t.Context(), 0)
 	require.NoError(t, err)
 
 	require.DeepEqual(t, wanted, d)
@@ -96,13 +94,13 @@ func TestService_HeadSyncCommitteeDomain(t *testing.T) {
 
 func TestService_HeadSyncContributionProofDomain(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	wanted, err := signing.Domain(s.Fork(), slots.ToEpoch(s.Slot()), params.BeaconConfig().DomainContributionAndProof, s.GenesisValidatorsRoot())
 	require.NoError(t, err)
 
-	d, err := c.HeadSyncContributionProofDomain(context.Background(), 0)
+	d, err := c.HeadSyncContributionProofDomain(t.Context(), 0)
 	require.NoError(t, err)
 
 	require.DeepEqual(t, wanted, d)
@@ -110,30 +108,27 @@ func TestService_HeadSyncContributionProofDomain(t *testing.T) {
 
 func TestService_HeadSyncSelectionProofDomain(t *testing.T) {
 	s, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().TargetCommitteeSize)
-	c := &Service{}
+	c := testServiceWithDB(t)
 	c.head = &head{state: s}
 
 	wanted, err := signing.Domain(s.Fork(), slots.ToEpoch(s.Slot()), params.BeaconConfig().DomainSyncCommitteeSelectionProof, s.GenesisValidatorsRoot())
 	require.NoError(t, err)
 
-	d, err := c.HeadSyncSelectionProofDomain(context.Background(), 0)
+	d, err := c.HeadSyncSelectionProofDomain(t.Context(), 0)
 	require.NoError(t, err)
 
 	require.DeepEqual(t, wanted, d)
 }
 
 func TestSyncCommitteeHeadStateCache_RoundTrip(t *testing.T) {
-	c := syncCommitteeHeadStateCache
-	t.Cleanup(func() {
-		syncCommitteeHeadStateCache = cache.NewSyncCommitteeHeadState()
-	})
+	s := testServiceNoDB(t)
 	beaconState, _ := util.DeterministicGenesisStateAltair(t, 100)
 	require.NoError(t, beaconState.SetSlot(100))
-	cachedState, err := c.Get(101)
+	cachedState, err := s.syncCommitteeHeadState.Get(101)
 	require.ErrorContains(t, cache.ErrNotFound.Error(), err)
 	require.Equal(t, nil, cachedState)
-	require.NoError(t, c.Put(101, beaconState))
-	cachedState, err = c.Get(101)
+	require.NoError(t, s.syncCommitteeHeadState.Put(101, beaconState))
+	cachedState, err = s.syncCommitteeHeadState.Get(101)
 	require.NoError(t, err)
 	require.DeepEqual(t, beaconState, cachedState)
 }

beacon-chain/blockchain/head_test.go

@@ -9,7 +9,6 @@ import (
 
 	mock "github.com/OffchainLabs/prysm/v6/beacon-chain/blockchain/testing"
 	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/operations/blstoexec"
 	"github.com/OffchainLabs/prysm/v6/config/params"
@@ -34,17 +33,17 @@ func TestSaveHead_Same(t *testing.T) {
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
 	st, _ := util.DeterministicGenesisState(t, 1)
-	require.NoError(t, service.saveHead(context.Background(), r, b, st))
+	require.NoError(t, service.saveHead(t.Context(), r, b, st))
 	assert.Equal(t, primitives.Slot(0), service.headSlot(), "Head did not stay the same")
 	assert.Equal(t, r, service.headRoot(), "Head did not stay the same")
 }
 
 func TestSaveHead_Different(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 
-	oldBlock := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, util.NewBeaconBlock())
+	oldBlock := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, util.NewBeaconBlock())
 	oldRoot, err := oldBlock.Block().HashTreeRoot()
 	require.NoError(t, err)
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
@@ -61,7 +60,7 @@ func TestSaveHead_Different(t *testing.T) {
 	newHeadSignedBlock.Block.Slot = 1
 	newHeadBlock := newHeadSignedBlock.Block
 
-	wsb := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, newHeadSignedBlock)
+	wsb := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, newHeadSignedBlock)
 	newRoot, err := newHeadBlock.HashTreeRoot()
 	require.NoError(t, err)
 	state, blkRoot, err = prepareForkchoiceState(ctx, slots.PrevSlot(wsb.Block().Slot()), wsb.Block().ParentRoot(), service.cfg.ForkChoiceStore.CachedHeadRoot(), [32]byte{}, ojc, ofc)
@@ -74,13 +73,13 @@ func TestSaveHead_Different(t *testing.T) {
 	headState, err := util.NewBeaconState()
 	require.NoError(t, err)
 	require.NoError(t, headState.SetSlot(1))
-	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
-	require.NoError(t, service.cfg.BeaconDB.SaveState(context.Background(), headState, newRoot))
-	require.NoError(t, service.saveHead(context.Background(), newRoot, wsb, headState))
+	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
+	require.NoError(t, service.cfg.BeaconDB.SaveState(t.Context(), headState, newRoot))
+	require.NoError(t, service.saveHead(t.Context(), newRoot, wsb, headState))
 
 	assert.Equal(t, primitives.Slot(1), service.HeadSlot(), "Head did not change")
 
-	cachedRoot, err := service.HeadRoot(context.Background())
+	cachedRoot, err := service.HeadRoot(t.Context())
 	require.NoError(t, err)
 	assert.DeepEqual(t, cachedRoot, newRoot[:], "Head did not change")
 	headBlock, err := service.headBlock()
@@ -92,12 +91,12 @@ func TestSaveHead_Different(t *testing.T) {
 }
 
 func TestSaveHead_Different_Reorg(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	hook := logTest.NewGlobal()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 
-	oldBlock := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, util.NewBeaconBlock())
+	oldBlock := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, util.NewBeaconBlock())
 	oldRoot, err := oldBlock.Block().HashTreeRoot()
 	require.NoError(t, err)
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
@@ -120,7 +119,7 @@ func TestSaveHead_Different_Reorg(t *testing.T) {
 	newHeadSignedBlock.Block.ParentRoot = reorgChainParent[:]
 	newHeadBlock := newHeadSignedBlock.Block
 
-	wsb := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, newHeadSignedBlock)
+	wsb := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, newHeadSignedBlock)
 	newRoot, err := newHeadBlock.HashTreeRoot()
 	require.NoError(t, err)
 	state, blkRoot, err = prepareForkchoiceState(ctx, wsb.Block().Slot(), newRoot, wsb.Block().ParentRoot(), [32]byte{}, ojc, ofc)
@@ -129,13 +128,13 @@ func TestSaveHead_Different_Reorg(t *testing.T) {
 	headState, err := util.NewBeaconState()
 	require.NoError(t, err)
 	require.NoError(t, headState.SetSlot(1))
-	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
-	require.NoError(t, service.cfg.BeaconDB.SaveState(context.Background(), headState, newRoot))
-	require.NoError(t, service.saveHead(context.Background(), newRoot, wsb, headState))
+	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
+	require.NoError(t, service.cfg.BeaconDB.SaveState(t.Context(), headState, newRoot))
+	require.NoError(t, service.saveHead(t.Context(), newRoot, wsb, headState))
 
 	assert.Equal(t, primitives.Slot(1), service.HeadSlot(), "Head did not change")
 
-	cachedRoot, err := service.HeadRoot(context.Background())
+	cachedRoot, err := service.HeadRoot(t.Context())
 	require.NoError(t, err)
 	if !bytes.Equal(cachedRoot, newRoot[:]) {
 		t.Error("Head did not change")
@@ -154,20 +153,16 @@ func TestSaveHead_Different_Reorg(t *testing.T) {
 func Test_notifyNewHeadEvent(t *testing.T) {
 	t.Run("genesis_state_root", func(t *testing.T) {
 		bState, _ := util.DeterministicGenesisState(t, 10)
-		notifier := &mock.MockStateNotifier{RecordEvents: true}
-		srv := &Service{
-			cfg: &config{
-				StateNotifier:   notifier,
-				ForkChoiceStore: doublylinkedtree.New(),
-			},
-			originBlockRoot: [32]byte{1},
-		}
-		st, blk, err := prepareForkchoiceState(context.Background(), 0, [32]byte{}, [32]byte{}, [32]byte{}, &ethpb.Checkpoint{}, &ethpb.Checkpoint{})
+		srv := testServiceWithDB(t)
+		srv.SetGenesisTime(time.Now())
+		notifier := srv.cfg.StateNotifier.(*mock.MockStateNotifier)
+		srv.originBlockRoot = [32]byte{1}
+		st, blk, err := prepareForkchoiceState(t.Context(), 0, [32]byte{}, [32]byte{}, [32]byte{}, &ethpb.Checkpoint{}, &ethpb.Checkpoint{})
 		require.NoError(t, err)
-		require.NoError(t, srv.cfg.ForkChoiceStore.InsertNode(context.Background(), st, blk))
+		require.NoError(t, srv.cfg.ForkChoiceStore.InsertNode(t.Context(), st, blk))
 		newHeadStateRoot := [32]byte{2}
 		newHeadRoot := [32]byte{3}
-		require.NoError(t, srv.notifyNewHeadEvent(context.Background(), 1, bState, newHeadStateRoot[:], newHeadRoot[:]))
+		require.NoError(t, srv.notifyNewHeadEvent(t.Context(), 1, bState, newHeadStateRoot[:], newHeadRoot[:]))
 		events := notifier.ReceivedEvents()
 		require.Equal(t, 1, len(events))
 
@@ -185,18 +180,14 @@ func Test_notifyNewHeadEvent(t *testing.T) {
 	})
 	t.Run("non_genesis_values", func(t *testing.T) {
 		bState, _ := util.DeterministicGenesisState(t, 10)
-		notifier := &mock.MockStateNotifier{RecordEvents: true}
 		genesisRoot := [32]byte{1}
-		srv := &Service{
-			cfg: &config{
-				StateNotifier:   notifier,
-				ForkChoiceStore: doublylinkedtree.New(),
-			},
-			originBlockRoot: genesisRoot,
-		}
-		st, blk, err := prepareForkchoiceState(context.Background(), 0, [32]byte{}, [32]byte{}, [32]byte{}, &ethpb.Checkpoint{}, &ethpb.Checkpoint{})
+		srv := testServiceWithDB(t)
+		srv.SetGenesisTime(time.Now())
+		srv.originBlockRoot = genesisRoot
+		notifier := srv.cfg.StateNotifier.(*mock.MockStateNotifier)
+		st, blk, err := prepareForkchoiceState(t.Context(), 0, [32]byte{}, [32]byte{}, [32]byte{}, &ethpb.Checkpoint{}, &ethpb.Checkpoint{})
 		require.NoError(t, err)
-		require.NoError(t, srv.cfg.ForkChoiceStore.InsertNode(context.Background(), st, blk))
+		require.NoError(t, srv.cfg.ForkChoiceStore.InsertNode(t.Context(), st, blk))
 		epoch1Start, err := slots.EpochStart(1)
 		require.NoError(t, err)
 		epoch2Start, err := slots.EpochStart(1)
@@ -205,7 +196,7 @@ func Test_notifyNewHeadEvent(t *testing.T) {
 
 		newHeadStateRoot := [32]byte{2}
 		newHeadRoot := [32]byte{3}
-		err = srv.notifyNewHeadEvent(context.Background(), epoch2Start, bState, newHeadStateRoot[:], newHeadRoot[:])
+		err = srv.notifyNewHeadEvent(t.Context(), epoch2Start, bState, newHeadStateRoot[:], newHeadRoot[:])
 		require.NoError(t, err)
 		events := notifier.ReceivedEvents()
 		require.Equal(t, 1, len(events))
@@ -225,11 +216,11 @@ func Test_notifyNewHeadEvent(t *testing.T) {
 }
 
 func TestRetrieveHead_ReadOnly(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 
-	oldBlock := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, util.NewBeaconBlock())
+	oldBlock := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, util.NewBeaconBlock())
 	oldRoot, err := oldBlock.Block().HashTreeRoot()
 	require.NoError(t, err)
 	service.head = &head{
@@ -243,7 +234,7 @@ func TestRetrieveHead_ReadOnly(t *testing.T) {
 	ojc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 	ofc := &ethpb.Checkpoint{Root: params.BeaconConfig().ZeroHash[:]}
 
-	wsb := util.SaveBlock(t, context.Background(), service.cfg.BeaconDB, newHeadSignedBlock)
+	wsb := util.SaveBlock(t, t.Context(), service.cfg.BeaconDB, newHeadSignedBlock)
 	newRoot, err := newHeadBlock.HashTreeRoot()
 	require.NoError(t, err)
 	state, blkRoot, err := prepareForkchoiceState(ctx, slots.PrevSlot(wsb.Block().Slot()), wsb.Block().ParentRoot(), service.cfg.ForkChoiceStore.CachedHeadRoot(), [32]byte{}, ojc, ofc)
@@ -256,9 +247,9 @@ func TestRetrieveHead_ReadOnly(t *testing.T) {
 	headState, err := util.NewBeaconState()
 	require.NoError(t, err)
 	require.NoError(t, headState.SetSlot(1))
-	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(context.Background(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
-	require.NoError(t, service.cfg.BeaconDB.SaveState(context.Background(), headState, newRoot))
-	require.NoError(t, service.saveHead(context.Background(), newRoot, wsb, headState))
+	require.NoError(t, service.cfg.BeaconDB.SaveStateSummary(t.Context(), &ethpb.StateSummary{Slot: 1, Root: newRoot[:]}))
+	require.NoError(t, service.cfg.BeaconDB.SaveState(t.Context(), headState, newRoot))
+	require.NoError(t, service.saveHead(t.Context(), newRoot, wsb, headState))
 
 	rOnlyState, err := service.HeadStateReadOnly(ctx)
 	require.NoError(t, err)
@@ -267,7 +258,7 @@ func TestRetrieveHead_ReadOnly(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	service.genesisTime = time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
@@ -333,7 +324,7 @@ func TestSaveOrphanedAtts(t *testing.T) {
 }
 
 func TestSaveOrphanedAttsElectra(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	service.genesisTime = time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
@@ -404,10 +395,10 @@ func TestSaveOrphanedOps(t *testing.T) {
 	config.ShardCommitteePeriod = 0
 	params.OverrideBeaconConfig(config)
 
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
-	service.genesisTime = time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
+	service.SetGenesisTime(time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second))
 
 	// Chain setup
 	// 0 -- 1 -- 2 -- 3
@@ -481,7 +472,7 @@ func TestSaveOrphanedOps(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts_CanFilter(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	service.cfg.BLSToExecPool = blstoexec.NewPool()
@@ -539,7 +530,7 @@ func TestSaveOrphanedAtts_CanFilter(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts_DoublyLinkedTrie(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	service.genesisTime = time.Now().Add(time.Duration(-10*int64(1)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
@@ -604,7 +595,7 @@ func TestSaveOrphanedAtts_DoublyLinkedTrie(t *testing.T) {
 }
 
 func TestSaveOrphanedAtts_CanFilter_DoublyLinkedTrie(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	service.genesisTime = time.Now().Add(time.Duration(-1*int64(params.BeaconConfig().SlotsPerEpoch+2)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)

beacon-chain/blockchain/inclusion_list.go

@@ -0,0 +1,72 @@
+package blockchain
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v6/config/params"
+	"github.com/OffchainLabs/prysm/v6/time/slots"
+	"github.com/sirupsen/logrus"
+)
+
+const updateInclusionListBlockInterval = time.Second
+
+// Routine that updates block building with inclusion lists one second before the slot starts.
+func (s *Service) updateBlockWithInclusionListRoutine() {
+	if err := s.waitForSync(); err != nil {
+		log.WithError(err).Error("Failed to wait for initial sync")
+		return
+	}
+
+	interval := time.Second*time.Duration(params.BeaconConfig().SecondsPerSlot) - updateInclusionListBlockInterval
+	ticker := slots.NewSlotTickerWithIntervals(s.genesisTime, []time.Duration{interval})
+
+	for {
+		select {
+		case <-s.ctx.Done():
+			return
+		case <-ticker.C():
+			s.updateBlockWithInclusionList(context.Background())
+		}
+	}
+}
+
+// Updates block building with inclusion lists, the current payload ID, and the new upload ID.
+func (s *Service) updateBlockWithInclusionList(ctx context.Context) {
+	currentSlot := s.CurrentSlot()
+
+	// Skip update if not in or past the FOCIL fork epoch.
+	if slots.ToEpoch(currentSlot) < params.BeaconConfig().Eip7805ForkEpoch {
+		return
+	}
+
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+
+	headRoot := s.headRoot()
+	id, found := s.cfg.PayloadIDCache.PayloadID(currentSlot+1, headRoot)
+	if !found {
+		return
+	}
+
+	txs := s.inclusionListCache.Get(currentSlot)
+	if len(txs) == 0 {
+		log.WithField("slot", currentSlot).Warn("No inclusion list transactions found to update block")
+		return
+	}
+
+	newID, err := s.cfg.ExecutionEngineCaller.UpdatePayloadWithInclusionList(ctx, id, txs)
+	if err != nil {
+		log.WithError(err).Error("Failed to update block with inclusion list")
+		return
+	}
+
+	log.WithFields(logrus.Fields{
+		"slot":     currentSlot,
+		"headRoot": fmt.Sprintf("%x", headRoot),
+		"txs":      len(txs),
+	}).Info("Updated block with inclusion list")
+
+	s.cfg.PayloadIDCache.Set(currentSlot+1, headRoot, *newID)
+}

beacon-chain/blockchain/init_sync_process_block_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 
 	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
@@ -11,7 +10,7 @@ import (
 )
 
 func TestService_getBlock(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	s := setupBeaconChain(t, beaconDB)
 	b1 := util.NewBeaconBlock()
@@ -42,7 +41,7 @@ func TestService_getBlock(t *testing.T) {
 }
 
 func TestService_hasBlockInInitSyncOrDB(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	s := setupBeaconChain(t, beaconDB)
 	b1 := util.NewBeaconBlock()

beacon-chain/blockchain/log.go

@@ -26,9 +26,6 @@ func logStateTransitionData(b interfaces.ReadOnlyBeaconBlock) error {
 	if len(b.Body().Attestations()) > 0 {
 		log = log.WithField("attestations", len(b.Body().Attestations()))
 	}
-	if len(b.Body().Deposits()) > 0 {
-		log = log.WithField("deposits", len(b.Body().Deposits()))
-	}
 	if len(b.Body().AttesterSlashings()) > 0 {
 		log = log.WithField("attesterSlashings", len(b.Body().AttesterSlashings()))
 	}
@@ -89,8 +86,8 @@ func logStateTransitionData(b interfaces.ReadOnlyBeaconBlock) error {
 	return nil
 }
 
-func logBlockSyncStatus(block interfaces.ReadOnlyBeaconBlock, blockRoot [32]byte, justified, finalized *ethpb.Checkpoint, receivedTime time.Time, genesisTime uint64, daWaitedTime time.Duration) error {
-	startTime, err := slots.ToTime(genesisTime, block.Slot())
+func logBlockSyncStatus(block interfaces.ReadOnlyBeaconBlock, blockRoot [32]byte, justified, finalized *ethpb.Checkpoint, receivedTime time.Time, genesis time.Time, daWaitedTime time.Duration) error {
+	startTime, err := slots.StartTime(genesis, block.Slot())
 	if err != nil {
 		return err
 	}
@@ -111,7 +108,6 @@ func logBlockSyncStatus(block interfaces.ReadOnlyBeaconBlock, blockRoot [32]byte
 			"sinceSlotStartTime":         prysmTime.Now().Sub(startTime),
 			"chainServiceProcessedTime":  prysmTime.Now().Sub(receivedTime) - daWaitedTime,
 			"dataAvailabilityWaitedTime": daWaitedTime,
-			"deposits":                   len(block.Body().Deposits()),
 		}
 		log.WithFields(lf).Debug("Synced new block")
 	} else {
@@ -159,7 +155,9 @@ func logPayload(block interfaces.ReadOnlyBeaconBlock) error {
 		if err != nil {
 			return errors.Wrap(err, "could not get BLSToExecutionChanges")
 		}
-		fields["blsToExecutionChanges"] = len(changes)
+		if len(changes) > 0 {
+			fields["blsToExecutionChanges"] = len(changes)
+		}
 	}
 	log.WithFields(fields).Debug("Synced new payload")
 	return nil

beacon-chain/blockchain/log_test.go

@@ -53,7 +53,7 @@ func Test_logStateTransitionData(t *testing.T) {
 				require.NoError(t, err)
 				return wb
 			},
-			want: "\"Finished applying state transition\" attestations=1 deposits=1 prefix=blockchain slot=0",
+			want: "\"Finished applying state transition\" attestations=1 prefix=blockchain slot=0",
 		},
 		{name: "has attester slashing",
 			b: func() interfaces.ReadOnlyBeaconBlock {
@@ -93,7 +93,7 @@ func Test_logStateTransitionData(t *testing.T) {
 				require.NoError(t, err)
 				return wb
 			},
-			want: "\"Finished applying state transition\" attestations=1 attesterSlashings=1 deposits=1 prefix=blockchain proposerSlashings=1 slot=0 voluntaryExits=1",
+			want: "\"Finished applying state transition\" attestations=1 attesterSlashings=1 prefix=blockchain proposerSlashings=1 slot=0 voluntaryExits=1",
 		},
 		{name: "has payload",
 			b:    func() interfaces.ReadOnlyBeaconBlock { return wrappedPayloadBlk },

beacon-chain/blockchain/metrics_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 
 	eth "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
@@ -9,23 +8,13 @@ import (
 	"github.com/OffchainLabs/prysm/v6/testing/util"
 )
 
-func TestReportEpochMetrics_BadHeadState(t *testing.T) {
-	s, err := util.NewBeaconState()
-	require.NoError(t, err)
-	h, err := util.NewBeaconState()
-	require.NoError(t, err)
-	require.NoError(t, h.SetValidators(nil))
-	err = reportEpochMetrics(context.Background(), s, h)
-	require.ErrorContains(t, "failed to initialize precompute: state has nil validator slice", err)
-}
-
 func TestReportEpochMetrics_BadAttestation(t *testing.T) {
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
 	h, err := util.NewBeaconState()
 	require.NoError(t, err)
 	require.NoError(t, h.AppendCurrentEpochAttestations(&eth.PendingAttestation{InclusionDelay: 0}))
-	err = reportEpochMetrics(context.Background(), s, h)
+	err = reportEpochMetrics(t.Context(), s, h)
 	require.ErrorContains(t, "attestation with inclusion delay of 0", err)
 }
 
@@ -36,6 +25,6 @@ func TestReportEpochMetrics_SlashedValidatorOutOfBound(t *testing.T) {
 	v.Slashed = true
 	require.NoError(t, h.UpdateValidatorAtIndex(0, v))
 	require.NoError(t, h.AppendCurrentEpochAttestations(&eth.PendingAttestation{InclusionDelay: 1, Data: util.HydrateAttestationData(&eth.AttestationData{})}))
-	err = reportEpochMetrics(context.Background(), h, h)
+	err = reportEpochMetrics(t.Context(), h, h)
 	require.ErrorContains(t, "slot 0 out of bounds", err)
 }

beacon-chain/blockchain/mock_test.go

@@ -8,9 +8,10 @@ import (
 	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/startup"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state/stategen"
+	"github.com/OffchainLabs/prysm/v6/testing/require"
 )
 
-func testServiceOptsWithDB(t *testing.T) []Option {
+func testServiceOptsWithDB(t testing.TB) []Option {
 	beaconDB := testDB.SetupDB(t)
 	fcs := doublylinkedtree.New()
 	cs := startup.NewClockSynchronizer()
@@ -31,3 +32,15 @@ func testServiceOptsNoDB() []Option {
 	cs := startup.NewClockSynchronizer()
 	return []Option{WithClockSynchronizer(cs)}
 }
+
+func testServiceNoDB(t testing.TB) *Service {
+	s, err := NewService(t.Context(), testServiceOptsNoDB()...)
+	require.NoError(t, err)
+	return s
+}
+
+func testServiceWithDB(t testing.TB) *Service {
+	s, err := NewService(t.Context(), testServiceOptsWithDB(t)...)
+	require.NoError(t, err)
+	return s
+}

beacon-chain/blockchain/options.go

@@ -33,6 +33,14 @@ func WithMaxGoroutines(x int) Option {
 	}
 }
 
+// WithLCStore for light client store access.
+func WithLCStore() Option {
+	return func(s *Service) error {
+		s.lcStore = lightclient.NewLightClientStore(s.cfg.BeaconDB)
+		return nil
+	}
+}
+
 // WithWeakSubjectivityCheckpoint for checkpoint sync.
 func WithWeakSubjectivityCheckpoint(c *ethpb.Checkpoint) Option {
 	return func(s *Service) error {
@@ -246,7 +254,7 @@ func WithSlasherEnabled(enabled bool) Option {
 // WithGenesisTime sets the genesis time for the blockchain service.
 func WithGenesisTime(genesisTime time.Time) Option {
 	return func(s *Service) error {
-		s.genesisTime = genesisTime
+		s.genesisTime = genesisTime.Truncate(time.Second) // Genesis time has a precision of 1 second.
 		return nil
 	}
 }
@@ -258,3 +266,19 @@ func WithLightClientStore(lcs *lightclient.Store) Option {
 		return nil
 	}
 }
+
+// WithStartWaitingDataColumnSidecars sets a channel that the `areDataColumnsAvailable` function will fill
+// in when starting to wait for additional data columns.
+func WithStartWaitingDataColumnSidecars(c chan bool) Option {
+	return func(s *Service) error {
+		s.startWaitingDataColumnSidecars = c
+		return nil
+	}
+}
+
+func WithInclusionListCache(c *cache.InclusionLists) Option {
+	return func(s *Service) error {
+		s.inclusionListCache = c
+		return nil
+	}
+}

beacon-chain/blockchain/process_attestation.go

@@ -5,6 +5,7 @@ import (
 	"time"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/helpers"
+	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
 	"github.com/OffchainLabs/prysm/v6/monitoring/tracing/trace"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
@@ -59,10 +60,8 @@ func (s *Service) OnAttestation(ctx context.Context, a ethpb.Att, disparity time
 		return err
 	}
 
-	genesisTime := uint64(s.genesisTime.Unix())
-
 	// Verify attestation target is from current epoch or previous epoch.
-	if err := verifyAttTargetEpoch(ctx, genesisTime, uint64(time.Now().Add(disparity).Unix()), tgt); err != nil {
+	if err := verifyAttTargetEpoch(ctx, s.genesisTime, time.Now().Add(disparity), tgt); err != nil {
 		return err
 	}
 
@@ -75,7 +74,7 @@ func (s *Service) OnAttestation(ctx context.Context, a ethpb.Att, disparity time
 	// validate_aggregate_proof.go and validate_beacon_attestation.go
 
 	// Verify attestations can only affect the fork choice of subsequent slots.
-	if err := slots.VerifyTime(genesisTime, a.GetData().Slot+1, disparity); err != nil {
+	if err := slots.VerifyTime(s.genesisTime, a.GetData().Slot+1, disparity); err != nil {
 		return err
 	}
 
@@ -88,7 +87,7 @@ func (s *Service) OnAttestation(ctx context.Context, a ethpb.Att, disparity time
 	if err != nil {
 		return err
 	}
-	if err := attestation.IsValidAttestationIndices(ctx, indexedAtt); err != nil {
+	if err := attestation.IsValidAttestationIndices(ctx, indexedAtt, params.BeaconConfig().MaxValidatorsPerCommittee, params.BeaconConfig().MaxCommitteesPerSlot); err != nil {
 		return err
 	}
 

beacon-chain/blockchain/process_attestation_helpers.go

@@ -4,12 +4,12 @@ import (
 	"context"
 	"fmt"
 	"strconv"
+	"time"
 
 	"github.com/OffchainLabs/prysm/v6/async"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/transition"
 	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state"
-	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
@@ -139,8 +139,8 @@ func (s *Service) getAttPreState(ctx context.Context, c *ethpb.Checkpoint) (stat
 }
 
 // verifyAttTargetEpoch validates attestation is from the current or previous epoch.
-func verifyAttTargetEpoch(_ context.Context, genesisTime, nowTime uint64, c *ethpb.Checkpoint) error {
-	currentSlot := primitives.Slot((nowTime - genesisTime) / params.BeaconConfig().SecondsPerSlot)
+func verifyAttTargetEpoch(_ context.Context, genesis, now time.Time, c *ethpb.Checkpoint) error {
+	currentSlot := slots.At(genesis, now)
 	currentEpoch := slots.ToEpoch(currentSlot)
 	var prevEpoch primitives.Epoch
 	// Prevents previous epoch under flow

beacon-chain/blockchain/process_attestation_test.go

@@ -161,7 +161,7 @@ func TestStore_OnAttestation_Ok_DoublyLinkedTree(t *testing.T) {
 
 func TestService_GetRecentPreState(t *testing.T) {
 	service, _ := minimalTestService(t)
-	ctx := context.Background()
+	ctx := t.Context()
 
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
@@ -183,7 +183,7 @@ func TestService_GetRecentPreState(t *testing.T) {
 
 func TestService_GetAttPreState_Concurrency(t *testing.T) {
 	service, _ := minimalTestService(t)
-	ctx := context.Background()
+	ctx := t.Context()
 
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
@@ -353,29 +353,29 @@ func TestStore_UpdateCheckpointState(t *testing.T) {
 }
 
 func TestAttEpoch_MatchPrevEpoch(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
-	nowTime := uint64(params.BeaconConfig().SlotsPerEpoch) * params.BeaconConfig().SecondsPerSlot
-	require.NoError(t, verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)}))
+	nowTime := time.Unix(int64(params.BeaconConfig().SlotsPerEpoch)*int64(params.BeaconConfig().SecondsPerSlot), 0)
+	require.NoError(t, verifyAttTargetEpoch(ctx, time.Unix(0, 0), nowTime, &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)}))
 }
 
 func TestAttEpoch_MatchCurrentEpoch(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
-	nowTime := uint64(params.BeaconConfig().SlotsPerEpoch) * params.BeaconConfig().SecondsPerSlot
-	require.NoError(t, verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Epoch: 1}))
+	nowTime := time.Unix(int64(params.BeaconConfig().SlotsPerEpoch)*int64(params.BeaconConfig().SecondsPerSlot), 0)
+	require.NoError(t, verifyAttTargetEpoch(ctx, time.Unix(0, 0), nowTime, &ethpb.Checkpoint{Epoch: 1}))
 }
 
 func TestAttEpoch_NotMatch(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
-	nowTime := 2 * uint64(params.BeaconConfig().SlotsPerEpoch) * params.BeaconConfig().SecondsPerSlot
-	err := verifyAttTargetEpoch(ctx, 0, nowTime, &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)})
+	nowTime := time.Unix(2*int64(params.BeaconConfig().SlotsPerEpoch)*int64(params.BeaconConfig().SecondsPerSlot), 0)
+	err := verifyAttTargetEpoch(ctx, time.Unix(0, 0), nowTime, &ethpb.Checkpoint{Root: make([]byte, fieldparams.RootLength)})
 	assert.ErrorContains(t, "target epoch 0 does not match current epoch 2 or prev epoch 1", err)
 }
 
 func TestVerifyBeaconBlock_NoBlock(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	opts := testServiceOptsWithDB(t)
 	service, err := NewService(ctx, opts...)
 	require.NoError(t, err)
@@ -385,7 +385,7 @@ func TestVerifyBeaconBlock_NoBlock(t *testing.T) {
 }
 
 func TestVerifyBeaconBlock_futureBlock(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
 	opts := testServiceOptsWithDB(t)
 	service, err := NewService(ctx, opts...)
@@ -402,7 +402,7 @@ func TestVerifyBeaconBlock_futureBlock(t *testing.T) {
 }
 
 func TestVerifyBeaconBlock_OK(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
 	opts := testServiceOptsWithDB(t)
 	service, err := NewService(ctx, opts...)

beacon-chain/blockchain/process_block.go

@@ -72,8 +72,6 @@ func (s *Service) postBlockProcess(cfg *postBlockProcessConfig) error {
 	}
 	if features.Get().EnableLightClient && slots.ToEpoch(s.CurrentSlot()) >= params.BeaconConfig().AltairForkEpoch {
 		defer s.processLightClientUpdates(cfg)
-		defer s.saveLightClientUpdate(cfg)
-		defer s.saveLightClientBootstrap(cfg)
 	}
 	defer s.sendStateFeedOnBlock(cfg)
 	defer reportProcessingTime(startTime)
@@ -331,7 +329,7 @@ func (s *Service) updateEpochBoundaryCaches(ctx context.Context, st state.Beacon
 	// The latest block header is from the previous epoch
 	r, err := st.LatestBlockHeader().HashTreeRoot()
 	if err != nil {
-		log.WithError(err).Error("could not update proposer index state-root map")
+		log.WithError(err).Error("Could not update proposer index state-root map")
 		return nil
 	}
 	// The proposer indices cache takes the target root for the previous
@@ -341,12 +339,12 @@ func (s *Service) updateEpochBoundaryCaches(ctx context.Context, st state.Beacon
 	}
 	target, err := s.cfg.ForkChoiceStore.TargetRootForEpoch(r, e)
 	if err != nil {
-		log.WithError(err).Error("could not update proposer index state-root map")
+		log.WithError(err).Error("Could not update proposer index state-root map")
 		return nil
 	}
 	err = helpers.UpdateCachedCheckpointToStateRoot(st, &forkchoicetypes.Checkpoint{Epoch: e, Root: target})
 	if err != nil {
-		log.WithError(err).Error("could not update proposer index state-root map")
+		log.WithError(err).Error("Could not update proposer index state-root map")
 	}
 	return nil
 }
@@ -564,7 +562,7 @@ func (s *Service) validateMergeTransitionBlock(ctx context.Context, stateVersion
 // If there is not, it will call forkchoice updated with the correct payload attribute then cache the payload ID.
 func (s *Service) runLateBlockTasks() {
 	if err := s.waitForSync(); err != nil {
-		log.WithError(err).Error("failed to wait for initial sync")
+		log.WithError(err).Error("Failed to wait for initial sync")
 		return
 	}
 
@@ -639,7 +637,11 @@ func missingDataColumnIndices(bs *filesystem.DataColumnStorage, root [fieldparam
 // The function will first check the database to see if all sidecars have been persisted. If any
 // sidecars are missing, it will then read from the sidecar notifier channel for the given root until the channel is
 // closed, the context hits cancellation/timeout, or notifications have been received for all the missing sidecars.
-func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signedBlock interfaces.ReadOnlySignedBeaconBlock) error {
+func (s *Service) isDataAvailable(
+	ctx context.Context,
+	root [fieldparams.RootLength]byte,
+	signedBlock interfaces.ReadOnlySignedBeaconBlock,
+) error {
 	block := signedBlock.Block()
 	if block == nil {
 		return errors.New("invalid nil beacon block")
@@ -659,7 +661,11 @@ func (s *Service) isDataAvailable(ctx context.Context, root [32]byte, signedBloc
 
 // areDataColumnsAvailable blocks until all data columns committed to in the block are available,
 // or an error or context cancellation occurs. A nil result means that the data availability check is successful.
-func (s *Service) areDataColumnsAvailable(ctx context.Context, root [fieldparams.RootLength]byte, block interfaces.ReadOnlyBeaconBlock) error {
+func (s *Service) areDataColumnsAvailable(
+	ctx context.Context,
+	root [fieldparams.RootLength]byte,
+	block interfaces.ReadOnlyBeaconBlock,
+) error {
 	// We are only required to check within MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS
 	blockSlot, currentSlot := block.Slot(), s.CurrentSlot()
 	blockEpoch, currentEpoch := slots.ToEpoch(blockSlot), slots.ToEpoch(currentSlot)
@@ -726,8 +732,15 @@ func (s *Service) areDataColumnsAvailable(ctx context.Context, root [fieldparams
 		return nil
 	}
 
+	if s.startWaitingDataColumnSidecars != nil {
+		s.startWaitingDataColumnSidecars <- true
+	}
+
 	// Log for DA checks that cross over into the next slot; helpful for debugging.
-	nextSlot := slots.BeginsAt(block.Slot()+1, s.genesisTime)
+	nextSlot, err := slots.StartTime(s.genesisTime, block.Slot()+1)
+	if err != nil {
+		return fmt.Errorf("unable to determine slot start time: %w", err)
+	}
 
 	// Avoid logging if DA check is called after next slot start.
 	if nextSlot.After(time.Now()) {
@@ -845,7 +858,10 @@ func (s *Service) areBlobsAvailable(ctx context.Context, root [fieldparams.RootL
 	nc := s.blobNotifiers.forRoot(root, block.Slot())
 
 	// Log for DA checks that cross over into the next slot; helpful for debugging.
-	nextSlot := slots.BeginsAt(block.Slot()+1, s.genesisTime)
+	nextSlot, err := slots.StartTime(s.genesisTime, block.Slot()+1)
+	if err != nil {
+		return fmt.Errorf("unable to determine slot start time: %w", err)
+	}
 	// Avoid logging if DA check is called after next slot start.
 	if nextSlot.After(time.Now()) {
 		nst := time.AfterFunc(time.Until(nextSlot), func() {
@@ -896,7 +912,7 @@ func uint64MapToSortedSlice(input map[uint64]bool) []uint64 {
 // it also updates the next slot cache and the proposer index cache to deal with skipped slots.
 func (s *Service) lateBlockTasks(ctx context.Context) {
 	currentSlot := s.CurrentSlot()
-	if s.CurrentSlot() == s.HeadSlot() {
+	if currentSlot == s.HeadSlot() {
 		return
 	}
 	s.cfg.ForkChoiceStore.RLock()
@@ -917,10 +933,10 @@ func (s *Service) lateBlockTasks(ctx context.Context) {
 	// blocks.
 	lastState.CopyAllTries()
 	if err := transition.UpdateNextSlotCache(ctx, lastRoot, lastState); err != nil {
-		log.WithError(err).Debug("could not update next slot state cache")
+		log.WithError(err).Debug("Could not update next slot state cache")
 	}
 	if err := s.handleEpochBoundary(ctx, currentSlot, headState, headRoot[:]); err != nil {
-		log.WithError(err).Error("lateBlockTasks: could not update epoch boundary caches")
+		log.WithError(err).Error("Could not update epoch boundary caches")
 	}
 	// return early if we already started building a block for the current
 	// head root
@@ -934,7 +950,7 @@ func (s *Service) lateBlockTasks(ctx context.Context) {
 	if attribute.IsEmpty() {
 		headBlock, err := s.headBlock()
 		if err != nil {
-			log.WithError(err).WithField("head_root", headRoot).Error("unable to retrieve head block to fire payload attributes event")
+			log.WithError(err).WithField("head_root", headRoot).Error("Unable to retrieve head block to fire payload attributes event")
 		}
 		// notifyForkchoiceUpdate fires the payload attribute event. But in this case, we won't
 		// call notifyForkchoiceUpdate, so the event is fired here.

beacon-chain/blockchain/process_block_helpers.go

@@ -33,7 +33,7 @@ import (
 
 // CurrentSlot returns the current slot based on time.
 func (s *Service) CurrentSlot() primitives.Slot {
-	return slots.CurrentSlot(uint64(s.genesisTime.Unix()))
+	return slots.CurrentSlot(s.genesisTime)
 }
 
 // getFCUArgs returns the arguments to call forkchoice update
@@ -45,7 +45,7 @@ func (s *Service) getFCUArgs(cfg *postBlockProcessConfig, fcuArgs *fcuConfig) er
 		return nil
 	}
 	slot := cfg.roblock.Block().Slot()
-	if slots.WithinVotingWindow(uint64(s.genesisTime.Unix()), slot) {
+	if slots.WithinVotingWindow(s.genesisTime, slot) {
 		return nil
 	}
 	return s.computePayloadAttributes(cfg, fcuArgs)
@@ -68,11 +68,11 @@ func (s *Service) getFCUArgsEarlyBlock(cfg *postBlockProcessConfig, fcuArgs *fcu
 func (s *Service) logNonCanonicalBlockReceived(blockRoot [32]byte, headRoot [32]byte) {
 	receivedWeight, err := s.cfg.ForkChoiceStore.Weight(blockRoot)
 	if err != nil {
-		log.WithField("root", fmt.Sprintf("%#x", blockRoot)).Warn("could not determine node weight")
+		log.WithField("root", fmt.Sprintf("%#x", blockRoot)).Warn("Could not determine node weight")
 	}
 	headWeight, err := s.cfg.ForkChoiceStore.Weight(headRoot)
 	if err != nil {
-		log.WithField("root", fmt.Sprintf("%#x", headRoot)).Warn("could not determine node weight")
+		log.WithField("root", fmt.Sprintf("%#x", headRoot)).Warn("Could not determine node weight")
 	}
 	log.WithFields(logrus.Fields{
 		"receivedRoot":   fmt.Sprintf("%#x", blockRoot),
@@ -131,6 +131,9 @@ func (s *Service) sendStateFeedOnBlock(cfg *postBlockProcessConfig) {
 }
 
 func (s *Service) processLightClientUpdates(cfg *postBlockProcessConfig) {
+	if err := s.processLightClientUpdate(cfg); err != nil {
+		log.WithError(err).Error("Failed to process light client update")
+	}
 	if err := s.processLightClientOptimisticUpdate(cfg.ctx, cfg.roblock, cfg.postState); err != nil {
 		log.WithError(err).Error("Failed to process light client optimistic update")
 	}
@@ -139,38 +142,33 @@ func (s *Service) processLightClientUpdates(cfg *postBlockProcessConfig) {
 	}
 }
 
-// saveLightClientUpdate saves the light client update for this block
+// processLightClientUpdate saves the light client update for this block
 // if it's better than the already saved one, when feature flag is enabled.
-func (s *Service) saveLightClientUpdate(cfg *postBlockProcessConfig) {
+func (s *Service) processLightClientUpdate(cfg *postBlockProcessConfig) error {
 	attestedRoot := cfg.roblock.Block().ParentRoot()
 	attestedBlock, err := s.getBlock(cfg.ctx, attestedRoot)
 	if err != nil {
-		log.WithError(err).Errorf("Saving light client update failed: Could not get attested block for root %#x", attestedRoot)
-		return
+		return errors.Wrapf(err, "could not get attested block for root %#x", attestedRoot)
 	}
 	if attestedBlock == nil || attestedBlock.IsNil() {
-		log.Error("Saving light client update failed: Attested block is nil")
-		return
+		return errors.New("attested block is nil")
 	}
 	attestedState, err := s.cfg.StateGen.StateByRoot(cfg.ctx, attestedRoot)
 	if err != nil {
-		log.WithError(err).Errorf("Saving light client update failed: Could not get attested state for root %#x", attestedRoot)
-		return
+		return errors.Wrapf(err, "could not get attested state for root %#x", attestedRoot)
 	}
 	if attestedState == nil || attestedState.IsNil() {
-		log.Error("Saving light client update failed: Attested state is nil")
-		return
+		return errors.New("attested state is nil")
 	}
 
 	finalizedRoot := attestedState.FinalizedCheckpoint().Root
 	finalizedBlock, err := s.getBlock(cfg.ctx, [32]byte(finalizedRoot))
 	if err != nil {
 		if errors.Is(err, errBlockNotFoundInCacheOrDB) {
-			log.Debugf("Skipping saving light client update: Finalized block is nil for root %#x", finalizedRoot)
-		} else {
-			log.WithError(err).Errorf("Saving light client update failed: Could not get finalized block for root %#x", finalizedRoot)
+			log.Debugf("Skipping saving light client update because finalized block is nil for root %#x", finalizedRoot)
+			return nil
 		}
-		return
+		return errors.Wrapf(err, "could not get finalized block for root %#x", finalizedRoot)
 	}
 
 	update, err := lightclient.NewLightClientUpdateFromBeaconState(
@@ -183,57 +181,12 @@ func (s *Service) saveLightClientUpdate(cfg *postBlockProcessConfig) {
 		finalizedBlock,
 	)
 	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not create light client update")
-		return
+		return errors.Wrapf(err, "could not create light client update")
 	}
 
 	period := slots.SyncCommitteePeriod(slots.ToEpoch(attestedState.Slot()))
 
-	oldUpdate, err := s.cfg.BeaconDB.LightClientUpdate(cfg.ctx, period)
-	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not get current light client update")
-		return
-	}
-
-	if oldUpdate == nil {
-		if err := s.cfg.BeaconDB.SaveLightClientUpdate(cfg.ctx, period, update); err != nil {
-			log.WithError(err).Error("Saving light client update failed: Could not save light client update")
-		} else {
-			log.WithField("period", period).Debug("Saving light client update: Saved new update")
-		}
-		return
-	}
-
-	isNewUpdateBetter, err := lightclient.IsBetterUpdate(update, oldUpdate)
-	if err != nil {
-		log.WithError(err).Error("Saving light client update failed: Could not compare light client updates")
-		return
-	}
-
-	if isNewUpdateBetter {
-		if err := s.cfg.BeaconDB.SaveLightClientUpdate(cfg.ctx, period, update); err != nil {
-			log.WithError(err).Error("Saving light client update failed: Could not save light client update")
-		} else {
-			log.WithField("period", period).Debug("Saving light client update: Saved new update")
-		}
-	} else {
-		log.WithField("period", period).Debug("Saving light client update: New update is not better than the current one. Skipping save.")
-	}
-}
-
-// saveLightClientBootstrap saves a light client bootstrap for this block
-// when feature flag is enabled.
-func (s *Service) saveLightClientBootstrap(cfg *postBlockProcessConfig) {
-	blockRoot := cfg.roblock.Root()
-	bootstrap, err := lightclient.NewLightClientBootstrapFromBeaconState(cfg.ctx, s.CurrentSlot(), cfg.postState, cfg.roblock)
-	if err != nil {
-		log.WithError(err).Error("Saving light client bootstrap failed: Could not create light client bootstrap")
-		return
-	}
-	err = s.cfg.BeaconDB.SaveLightClientBootstrap(cfg.ctx, blockRoot[:], bootstrap)
-	if err != nil {
-		log.WithError(err).Error("Saving light client bootstrap failed: Could not save light client bootstrap in DB")
-	}
+	return s.lcStore.SaveLightClientUpdate(cfg.ctx, period, update)
 }
 
 func (s *Service) processLightClientFinalityUpdate(
@@ -436,7 +389,7 @@ func (s *Service) getBlockPreState(ctx context.Context, b interfaces.ReadOnlyBea
 	}
 
 	// Verify block slot time is not from the future.
-	if err := slots.VerifyTime(uint64(s.genesisTime.Unix()), b.Slot(), params.BeaconConfig().MaximumGossipClockDisparityDuration()); err != nil {
+	if err := slots.VerifyTime(s.genesisTime, b.Slot(), params.BeaconConfig().MaximumGossipClockDisparityDuration()); err != nil {
 		return nil, err
 	}
 
@@ -531,7 +484,7 @@ func (s *Service) updateFinalized(ctx context.Context, cp *ethpb.Checkpoint) err
 		// is meant to be asynchronous and run in the background rather than being
 		// tied to the execution of a block.
 		if err := s.cfg.StateGen.MigrateToCold(s.ctx, fRoot); err != nil {
-			log.WithError(err).Error("could not migrate to cold")
+			log.WithError(err).Error("Could not migrate to cold")
 		}
 	}()
 	return nil
@@ -620,7 +573,7 @@ func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32
 	// Update deposit cache.
 	finalizedState, err := s.cfg.StateGen.StateByRoot(ctx, fRoot)
 	if err != nil {
-		log.WithError(err).Error("could not fetch finalized state")
+		log.WithError(err).Error("Could not fetch finalized state")
 		return
 	}
 
@@ -638,7 +591,7 @@ func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32
 	// because the Eth1 follow distance makes such long-range reorgs extremely unlikely.
 	eth1DepositIndex, err := mathutil.Int(finalizedState.Eth1DepositIndex())
 	if err != nil {
-		log.WithError(err).Error("could not cast eth1 deposit index")
+		log.WithError(err).Error("Could not cast eth1 deposit index")
 		return
 	}
 	// The deposit index in the state is always the index of the next deposit
@@ -647,12 +600,12 @@ func (s *Service) insertFinalizedDepositsAndPrune(ctx context.Context, fRoot [32
 	finalizedEth1DepIdx := eth1DepositIndex - 1
 	if err = s.cfg.DepositCache.InsertFinalizedDeposits(ctx, int64(finalizedEth1DepIdx), common.Hash(finalizedState.Eth1Data().BlockHash),
 		0 /* Setting a zero value as we have no access to block height */); err != nil {
-		log.WithError(err).Error("could not insert finalized deposits")
+		log.WithError(err).Error("Could not insert finalized deposits")
 		return
 	}
 	// Deposit proofs are only used during state transition and can be safely removed to save space.
 	if err = s.cfg.DepositCache.PruneProofs(ctx, int64(finalizedEth1DepIdx)); err != nil {
-		log.WithError(err).Error("could not prune deposit proofs")
+		log.WithError(err).Error("Could not prune deposit proofs")
 	}
 	// Prune deposits which have already been finalized, the below method prunes all pending deposits (non-inclusive) up
 	// to the provided eth1 deposit index.

beacon-chain/blockchain/receive_attestation.go

@@ -43,7 +43,7 @@ func (s *Service) AttestationTargetState(ctx context.Context, target *ethpb.Chec
 	if err != nil {
 		return nil, err
 	}
-	if err := slots.ValidateClock(ss, uint64(s.genesisTime.Unix())); err != nil {
+	if err := slots.ValidateClock(ss, s.genesisTime); err != nil {
 		return nil, err
 	}
 	// We acquire the lock here instead than on gettAttPreState because that function gets called from UpdateHead that holds a write lock
@@ -69,7 +69,7 @@ func (s *Service) spawnProcessAttestationsRoutine() {
 	go func() {
 		_, err := s.clockWaiter.WaitForClock(s.ctx)
 		if err != nil {
-			log.WithError(err).Error("spawnProcessAttestationsRoutine failed to receive genesis data")
+			log.WithError(err).Error("Failed to receive genesis data")
 			return
 		}
 		if s.genesisTime.IsZero() {
@@ -103,11 +103,19 @@ func (s *Service) spawnProcessAttestationsRoutine() {
 				} else {
 					s.cfg.ForkChoiceStore.Lock()
 					if err := s.cfg.ForkChoiceStore.NewSlot(s.ctx, slotInterval.Slot); err != nil {
-						log.WithError(err).Error("could not process new slot")
+						log.WithError(err).Error("Could not process new slot")
 					}
 					s.cfg.ForkChoiceStore.Unlock()
 
 					s.UpdateHead(s.ctx, slotInterval.Slot)
+
+					// Prune inclusion list that's more than 1 epoch old.
+					// Mean at the second 0 of slot 100, we prune the inclusion list of slot 98.
+					cachedSlot := primitives.Slot(0)
+					if slotInterval.Slot > 2 {
+						cachedSlot = slotInterval.Slot - 2
+					}
+					s.inclusionListCache.Delete(cachedSlot)
 				}
 			}
 		}
@@ -144,7 +152,7 @@ func (s *Service) UpdateHead(ctx context.Context, proposingSlot primitives.Slot)
 	log.WithField("newHeadRoot", fmt.Sprintf("%#x", newHeadRoot)).Debug("Head changed due to attestations")
 	headState, headBlock, err := s.getStateAndBlock(ctx, newHeadRoot)
 	if err != nil {
-		log.WithError(err).Error("could not get head block")
+		log.WithError(err).Error("Could not get head block")
 		return
 	}
 	newAttHeadElapsedTime.Observe(float64(time.Since(start).Milliseconds()))
@@ -161,7 +169,7 @@ func (s *Service) UpdateHead(ctx context.Context, proposingSlot primitives.Slot)
 		return
 	}
 	if err := s.forkchoiceUpdateWithExecution(s.ctx, fcuArgs); err != nil {
-		log.WithError(err).Error("could not update forkchoice")
+		log.WithError(err).Error("Could not update forkchoice")
 	}
 }
 
@@ -179,7 +187,7 @@ func (s *Service) processAttestations(ctx context.Context, disparity time.Durati
 		// This delays consideration in the fork choice until their slot is in the past.
 		// https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/fork-choice.md#validate_on_attestation
 		nextSlot := a.GetData().Slot + 1
-		if err := slots.VerifyTime(uint64(s.genesisTime.Unix()), nextSlot, disparity); err != nil {
+		if err := slots.VerifyTime(s.genesisTime, nextSlot, disparity); err != nil {
 			continue
 		}
 

beacon-chain/blockchain/receive_attestation_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 	"time"
 
@@ -32,7 +31,7 @@ func TestAttestationCheckPtState_FarFutureSlot(t *testing.T) {
 	service.genesisTime = time.Now()
 
 	e := primitives.Epoch(slots.MaxSlotBuffer/uint64(params.BeaconConfig().SlotsPerEpoch) + 1)
-	_, err := service.AttestationTargetState(context.Background(), &ethpb.Checkpoint{Epoch: e})
+	_, err := service.AttestationTargetState(t.Context(), &ethpb.Checkpoint{Epoch: e})
 	require.ErrorContains(t, "exceeds max allowed value relative to the local clock", err)
 }
 
@@ -56,11 +55,11 @@ func TestVerifyLMDFFGConsistent(t *testing.T) {
 	a.Data.Target.Root = []byte{'c'}
 	r33Root := r33.Root()
 	a.Data.BeaconBlockRoot = r33Root[:]
-	require.ErrorContains(t, wanted, service.VerifyLmdFfgConsistency(context.Background(), a))
+	require.ErrorContains(t, wanted, service.VerifyLmdFfgConsistency(t.Context(), a))
 
 	r32Root := r32.Root()
 	a.Data.Target.Root = r32Root[:]
-	err = service.VerifyLmdFfgConsistency(context.Background(), a)
+	err = service.VerifyLmdFfgConsistency(t.Context(), a)
 	require.NoError(t, err, "Could not verify LMD and FFG votes to be consistent")
 }
 
@@ -71,7 +70,7 @@ func TestProcessAttestations_Ok(t *testing.T) {
 
 	service.genesisTime = prysmTime.Now().Add(-1 * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
 	genesisState, pks := util.DeterministicGenesisState(t, 64)
-	require.NoError(t, genesisState.SetGenesisTime(uint64(prysmTime.Now().Unix())-params.BeaconConfig().SecondsPerSlot))
+	require.NoError(t, genesisState.SetGenesisTime(time.Now().Add(-1*time.Duration(params.BeaconConfig().SecondsPerSlot)*time.Second)))
 	require.NoError(t, service.saveGenesisData(ctx, genesisState))
 	atts, err := util.GenerateAttestations(genesisState, pks, 1, 0, false)
 	require.NoError(t, err)

beacon-chain/blockchain/receive_block.go

@@ -183,7 +183,7 @@ func (s *Service) updateCheckpoints(
 			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")
+			log.WithError(err).Error("Could not report epoch metrics")
 		}
 	}
 	if err := s.updateJustificationOnBlock(ctx, preState, postState, cp.j); err != nil {
@@ -283,7 +283,7 @@ func (s *Service) reportPostBlockProcessing(
 	// Log block sync status.
 	cp = s.cfg.ForkChoiceStore.JustifiedCheckpoint()
 	justified := &ethpb.Checkpoint{Epoch: cp.Epoch, Root: bytesutil.SafeCopyBytes(cp.Root[:])}
-	if err := logBlockSyncStatus(block.Block(), blockRoot, justified, finalized, receivedTime, uint64(s.genesisTime.Unix()), daWaitedTime); err != nil {
+	if err := logBlockSyncStatus(block.Block(), blockRoot, justified, finalized, receivedTime, s.genesisTime, daWaitedTime); err != nil {
 		log.WithError(err).Error("Unable to log block sync status")
 	}
 	// Log payload data
@@ -300,15 +300,30 @@ func (s *Service) reportPostBlockProcessing(
 
 func (s *Service) executePostFinalizationTasks(ctx context.Context, finalizedState state.BeaconState) {
 	finalized := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
+
+	// Send finalization event
 	go func() {
 		s.sendNewFinalizedEvent(ctx, finalizedState)
 	}()
 
+	// Insert finalized deposits into finalized deposit trie
 	depCtx, cancel := context.WithTimeout(context.Background(), depositDeadline)
 	go func() {
 		s.insertFinalizedDepositsAndPrune(depCtx, finalized.Root)
 		cancel()
 	}()
+
+	if features.Get().EnableLightClient {
+		// Save a light client bootstrap for the finalized checkpoint
+		go func() {
+			err := s.lcStore.SaveLightClientBootstrap(s.ctx, finalized.Root)
+			if err != nil {
+				log.WithError(err).Error("Could not save light client bootstrap by block root")
+			} else {
+				log.Debugf("Saved light client bootstrap for finalized root %#x", finalized.Root)
+			}
+		}()
+	}
 }
 
 // ReceiveBlockBatch processes the whole block batch at once, assuming the block batch is linear ,transitioning

beacon-chain/blockchain/receive_block_test.go

@@ -1,7 +1,6 @@
 package blockchain
 
 import (
-	"context"
 	"sync"
 	"testing"
 	"time"
@@ -9,7 +8,10 @@ import (
 	blockchainTesting "github.com/OffchainLabs/prysm/v6/beacon-chain/blockchain/testing"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/cache"
 	statefeed "github.com/OffchainLabs/prysm/v6/beacon-chain/core/feed/state"
+	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/helpers"
+	lightClient "github.com/OffchainLabs/prysm/v6/beacon-chain/core/light-client"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/das"
+	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/operations/voluntaryexits"
 	"github.com/OffchainLabs/prysm/v6/config/features"
 	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
@@ -19,6 +21,7 @@ import (
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
 	ethpbv1 "github.com/OffchainLabs/prysm/v6/proto/eth/v1"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
+	"github.com/OffchainLabs/prysm/v6/runtime/version"
 	"github.com/OffchainLabs/prysm/v6/testing/assert"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/OffchainLabs/prysm/v6/testing/util"
@@ -28,7 +31,7 @@ import (
 )
 
 func TestService_ReceiveBlock(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
 	genesis, keys := util.DeterministicGenesisState(t, 64)
 	copiedGen := genesis.Copy()
@@ -189,7 +192,7 @@ func TestHandleDA(t *testing.T) {
 	require.NoError(t, err)
 
 	s, _ := minimalTestService(t)
-	elapsed, err := s.handleDA(context.Background(), signedBeaconBlock, [fieldparams.RootLength]byte{}, nil)
+	elapsed, err := s.handleDA(t.Context(), signedBeaconBlock, [fieldparams.RootLength]byte{}, nil)
 	require.NoError(t, err)
 	require.Equal(t, true, elapsed > 0, "Elapsed time should be greater than 0")
 }
@@ -228,7 +231,7 @@ func TestService_ReceiveBlockUpdateHead(t *testing.T) {
 }
 
 func TestService_ReceiveBlockBatch(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 
 	genesis, keys := util.DeterministicGenesisState(t, 64)
 	genFullBlock := func(t *testing.T, conf *util.BlockGenConfig, slot primitives.Slot) *ethpb.SignedBeaconBlock {
@@ -293,23 +296,23 @@ func TestService_ReceiveBlockBatch(t *testing.T) {
 func TestService_HasBlock(t *testing.T) {
 	s, _ := minimalTestService(t)
 	r := [32]byte{'a'}
-	if s.HasBlock(context.Background(), r) {
+	if s.HasBlock(t.Context(), r) {
 		t.Error("Should not have block")
 	}
 	wsb, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	require.NoError(t, err)
-	require.NoError(t, s.saveInitSyncBlock(context.Background(), r, wsb))
-	if !s.HasBlock(context.Background(), r) {
+	require.NoError(t, s.saveInitSyncBlock(t.Context(), r, wsb))
+	if !s.HasBlock(t.Context(), r) {
 		t.Error("Should have block")
 	}
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 1
-	util.SaveBlock(t, context.Background(), s.cfg.BeaconDB, b)
+	util.SaveBlock(t, t.Context(), s.cfg.BeaconDB, b)
 	r, err = b.Block.HashTreeRoot()
 	require.NoError(t, err)
-	require.Equal(t, true, s.HasBlock(context.Background(), r))
+	require.Equal(t, true, s.HasBlock(t.Context(), r))
 	s.blockBeingSynced.set(r)
-	require.Equal(t, false, s.HasBlock(context.Background(), r))
+	require.Equal(t, false, s.HasBlock(t.Context(), r))
 }
 
 func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
@@ -318,7 +321,7 @@ func TestCheckSaveHotStateDB_Enabling(t *testing.T) {
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
 
-	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
+	require.NoError(t, s.checkSaveHotStateDB(t.Context()))
 	assert.LogsContain(t, hook, "Entering mode to save hot states in DB")
 }
 
@@ -329,19 +332,19 @@ func TestCheckSaveHotStateDB_Disabling(t *testing.T) {
 
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
 	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
-	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
+	require.NoError(t, s.checkSaveHotStateDB(t.Context()))
 	s.genesisTime = time.Now()
 
-	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
+	require.NoError(t, s.checkSaveHotStateDB(t.Context()))
 	assert.LogsContain(t, hook, "Exiting mode to save hot states in DB")
 }
 
 func TestCheckSaveHotStateDB_Overflow(t *testing.T) {
 	hook := logTest.NewGlobal()
 	s, _ := minimalTestService(t)
-	s.genesisTime = time.Now()
+	s.SetGenesisTime(time.Now())
 
-	require.NoError(t, s.checkSaveHotStateDB(context.Background()))
+	require.NoError(t, s.checkSaveHotStateDB(t.Context()))
 	assert.LogsDoNotContain(t, hook, "Entering mode to save hot states in DB")
 }
 
@@ -349,8 +352,9 @@ func TestHandleCaches_EnablingLargeSize(t *testing.T) {
 	hook := logTest.NewGlobal()
 	s, _ := minimalTestService(t)
 	st := params.BeaconConfig().SlotsPerEpoch.Mul(uint64(epochsSinceFinalitySaveHotStateDB))
-	s.genesisTime = time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second)
+	s.SetGenesisTime(time.Now().Add(time.Duration(-1*int64(st)*int64(params.BeaconConfig().SecondsPerSlot)) * time.Second))
 
+	helpers.ClearCache()
 	require.NoError(t, s.handleCaches())
 	assert.LogsContain(t, hook, "Expanding committee cache size")
 }
@@ -456,7 +460,7 @@ func Test_executePostFinalizationTasks(t *testing.T) {
 
 	headState, err := util.NewBeaconStateElectra()
 	require.NoError(t, err)
-	finalizedStRoot, err := headState.HashTreeRoot(context.Background())
+	finalizedStRoot, err := headState.HashTreeRoot(t.Context())
 	require.NoError(t, err)
 
 	genesis := util.NewBeaconBlock()
@@ -563,3 +567,48 @@ func Test_executePostFinalizationTasks(t *testing.T) {
 	})
 
 }
+
+func TestProcessLightClientBootstrap(t *testing.T) {
+	featCfg := &features.Flags{}
+	featCfg.EnableLightClient = true
+	reset := features.InitWithReset(featCfg)
+	defer reset()
+
+	s, tr := minimalTestService(t, WithLCStore())
+	ctx := tr.ctx
+
+	for testVersion := version.Altair; testVersion <= version.Electra; testVersion++ {
+		t.Run(version.String(testVersion), func(t *testing.T) {
+			l := util.NewTestLightClient(t, testVersion)
+
+			require.NoError(t, s.cfg.BeaconDB.SaveBlock(ctx, l.FinalizedBlock))
+			finalizedBlockRoot, err := l.FinalizedBlock.Block().HashTreeRoot()
+			require.NoError(t, err)
+			require.NoError(t, s.cfg.BeaconDB.SaveState(ctx, l.FinalizedState, finalizedBlockRoot))
+
+			cp := l.AttestedState.FinalizedCheckpoint()
+			require.DeepSSZEqual(t, finalizedBlockRoot, [32]byte(cp.Root))
+
+			require.NoError(t, s.cfg.ForkChoiceStore.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Epoch: cp.Epoch, Root: [32]byte(cp.Root)}))
+
+			sss, err := s.cfg.BeaconDB.State(ctx, finalizedBlockRoot)
+			require.NoError(t, err)
+			require.NotNil(t, sss)
+
+			s.executePostFinalizationTasks(s.ctx, l.FinalizedState)
+
+			// wait for the goroutine to finish processing
+			time.Sleep(1 * time.Second)
+
+			// Check that the light client bootstrap is saved
+			b, err := s.lcStore.LightClientBootstrap(ctx, [32]byte(cp.Root))
+			require.NoError(t, err)
+			require.NotNil(t, b)
+
+			btst, err := lightClient.NewLightClientBootstrapFromBeaconState(ctx, l.FinalizedState.Slot(), l.FinalizedState, l.FinalizedBlock)
+			require.NoError(t, err)
+			require.DeepEqual(t, btst, b)
+			require.Equal(t, b.Version(), testVersion)
+		})
+	}
+}

beacon-chain/blockchain/service.go

@@ -47,27 +47,30 @@ import (
 // Service represents a service that handles the internal
 // logic of managing the full PoS beacon chain.
 type Service struct {
-	cfg                  *config
-	ctx                  context.Context
-	cancel               context.CancelFunc
-	genesisTime          time.Time
-	head                 *head
-	headLock             sync.RWMutex
-	originBlockRoot      [32]byte // genesis root, or weak subjectivity checkpoint root, depending on how the node is initialized
-	boundaryRoots        [][32]byte
-	checkpointStateCache *cache.CheckpointStateCache
-	initSyncBlocks       map[[32]byte]interfaces.ReadOnlySignedBeaconBlock
-	initSyncBlocksLock   sync.RWMutex
-	wsVerifier           *WeakSubjectivityVerifier
-	clockSetter          startup.ClockSetter
-	clockWaiter          startup.ClockWaiter
-	syncComplete         chan struct{}
-	blobNotifiers        *blobNotifierMap
-	blockBeingSynced     *currentlySyncingBlock
-	blobStorage          *filesystem.BlobStorage
-	dataColumnStorage    *filesystem.DataColumnStorage
-	slasherEnabled       bool
-	lcStore              *lightClient.Store
+	cfg                            *config
+	ctx                            context.Context
+	cancel                         context.CancelFunc
+	genesisTime                    time.Time
+	head                           *head
+	headLock                       sync.RWMutex
+	originBlockRoot                [32]byte // genesis root, or weak subjectivity checkpoint root, depending on how the node is initialized
+	boundaryRoots                  [][32]byte
+	checkpointStateCache           *cache.CheckpointStateCache
+	initSyncBlocks                 map[[32]byte]interfaces.ReadOnlySignedBeaconBlock
+	initSyncBlocksLock             sync.RWMutex
+	wsVerifier                     *WeakSubjectivityVerifier
+	clockSetter                    startup.ClockSetter
+	clockWaiter                    startup.ClockWaiter
+	syncComplete                   chan struct{}
+	blobNotifiers                  *blobNotifierMap
+	blockBeingSynced               *currentlySyncingBlock
+	blobStorage                    *filesystem.BlobStorage
+	dataColumnStorage              *filesystem.DataColumnStorage
+	slasherEnabled                 bool
+	lcStore                        *lightClient.Store
+	startWaitingDataColumnSidecars chan bool // for testing purposes only
+	syncCommitteeHeadState         *cache.SyncCommitteeHeadStateCache
+	inclusionListCache             *cache.InclusionLists
 }
 
 // config options for the service.
@@ -179,14 +182,15 @@ func NewService(ctx context.Context, opts ...Option) (*Service, error) {
 		seenIndex: make(map[[32]byte][]bool),
 	}
 	srv := &Service{
-		ctx:                  ctx,
-		cancel:               cancel,
-		boundaryRoots:        [][32]byte{},
-		checkpointStateCache: cache.NewCheckpointStateCache(),
-		initSyncBlocks:       make(map[[32]byte]interfaces.ReadOnlySignedBeaconBlock),
-		blobNotifiers:        bn,
-		cfg:                  &config{},
-		blockBeingSynced:     &currentlySyncingBlock{roots: make(map[[32]byte]struct{})},
+		ctx:                    ctx,
+		cancel:                 cancel,
+		boundaryRoots:          [][32]byte{},
+		checkpointStateCache:   cache.NewCheckpointStateCache(),
+		initSyncBlocks:         make(map[[32]byte]interfaces.ReadOnlySignedBeaconBlock),
+		blobNotifiers:          bn,
+		cfg:                    &config{},
+		blockBeingSynced:       &currentlySyncingBlock{roots: make(map[[32]byte]struct{})},
+		syncCommitteeHeadState: cache.NewSyncCommitteeHeadState(),
 	}
 	for _, opt := range opts {
 		if err := opt(srv); err != nil {
@@ -219,6 +223,7 @@ func (s *Service) Start() {
 	}
 	s.spawnProcessAttestationsRoutine()
 	go s.runLateBlockTasks()
+	go s.updateBlockWithInclusionListRoutine()
 }
 
 // Stop the blockchain service's main event loop and associated goroutines.
@@ -265,7 +270,7 @@ func (s *Service) Status() error {
 // StartFromSavedState initializes the blockchain using a previously saved finalized checkpoint.
 func (s *Service) StartFromSavedState(saved state.BeaconState) error {
 	log.Info("Blockchain data already exists in DB, initializing...")
-	s.genesisTime = time.Unix(int64(saved.GenesisTime()), 0) // lint:ignore uintcast -- Genesis time will not exceed int64 in your lifetime.
+	s.genesisTime = saved.GenesisTime()
 	s.cfg.AttService.SetGenesisTime(saved.GenesisTime())
 
 	originRoot, err := s.originRootFromSavedState(s.ctx)
@@ -370,7 +375,7 @@ func (s *Service) startFromExecutionChain() error {
 				if e.Type == statefeed.ChainStarted {
 					data, ok := e.Data.(*statefeed.ChainStartedData)
 					if !ok {
-						log.Error("event data is not type *statefeed.ChainStartedData")
+						log.Error("Event data is not type *statefeed.ChainStartedData")
 						return
 					}
 					log.WithField("startTime", data.StartTime).Debug("Received chain start event")
@@ -407,7 +412,7 @@ func (s *Service) onExecutionChainStart(ctx context.Context, genesisTime time.Ti
 
 	vr := bytesutil.ToBytes32(initializedState.GenesisValidatorsRoot())
 	if err := s.clockSetter.SetClock(startup.NewClock(genesisTime, vr)); err != nil {
-		log.WithError(err).Fatal("failed to initialize blockchain service from execution start event")
+		log.WithError(err).Fatal("Failed to initialize blockchain service from execution start event")
 	}
 }
 
@@ -421,7 +426,7 @@ func (s *Service) initializeBeaconChain(
 	eth1data *ethpb.Eth1Data) (state.BeaconState, error) {
 	ctx, span := trace.StartSpan(ctx, "beacon-chain.Service.initializeBeaconChain")
 	defer span.End()
-	s.genesisTime = genesisTime
+	s.genesisTime = genesisTime.Truncate(time.Second) // Genesis time has a precision of 1 second.
 	unixTime := uint64(genesisTime.Unix())
 
 	genesisState, err := transition.OptimizedGenesisBeaconState(unixTime, preGenesisState, eth1data)
@@ -482,7 +487,7 @@ func (s *Service) saveGenesisData(ctx context.Context, genesisState state.Beacon
 	if err := s.cfg.ForkChoiceStore.SetOptimisticToValid(ctx, genesisBlkRoot); err != nil {
 		return errors.Wrap(err, "Could not set optimistic status of genesis block to false")
 	}
-	s.cfg.ForkChoiceStore.SetGenesisTime(uint64(s.genesisTime.Unix()))
+	s.cfg.ForkChoiceStore.SetGenesisTime(s.genesisTime)
 
 	if err := s.setHead(&head{
 		genesisBlkRoot,

beacon-chain/blockchain/service_norace_test.go

@@ -1,11 +1,9 @@
 package blockchain
 
 import (
-	"context"
 	"io"
 	"testing"
 
-	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/OffchainLabs/prysm/v6/testing/util"
@@ -18,15 +16,12 @@ func init() {
 }
 
 func TestChainService_SaveHead_DataRace(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg: &config{BeaconDB: beaconDB},
-	}
+	s := testServiceWithDB(t)
 	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
 	st, _ := util.DeterministicGenesisState(t, 1)
 	require.NoError(t, err)
 	go func() {
-		require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+		require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 	}()
-	require.NoError(t, s.saveHead(context.Background(), [32]byte{}, b, st))
+	require.NoError(t, s.saveHead(t.Context(), [32]byte{}, b, st))
 }

beacon-chain/blockchain/service_test.go

@@ -42,7 +42,7 @@ import (
 )
 
 func setupBeaconChain(t *testing.T, beaconDB db.Database) *Service {
-	ctx := context.Background()
+	ctx := t.Context()
 	var web3Service *execution.Service
 	var err error
 	srv, endpoint, err := mockExecution.SetupRPCServer()
@@ -115,7 +115,7 @@ func setupBeaconChain(t *testing.T, beaconDB db.Database) *Service {
 
 func TestChainStartStop_Initialized(t *testing.T) {
 	hook := logTest.NewGlobal()
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 
 	chainService := setupBeaconChain(t, beaconDB)
@@ -127,7 +127,7 @@ func TestChainStartStop_Initialized(t *testing.T) {
 	util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
-	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
+	require.NoError(t, s.SetGenesisTime(gt))
 	require.NoError(t, s.SetSlot(1))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveHeadBlockRoot(ctx, blkRoot))
@@ -152,7 +152,7 @@ func TestChainStartStop_Initialized(t *testing.T) {
 
 func TestChainStartStop_GenesisZeroHashes(t *testing.T) {
 	hook := logTest.NewGlobal()
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 
 	chainService := setupBeaconChain(t, beaconDB)
@@ -164,7 +164,7 @@ func TestChainStartStop_GenesisZeroHashes(t *testing.T) {
 	wsb := util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
-	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
+	require.NoError(t, s.SetGenesisTime(gt))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveGenesisBlockRoot(ctx, blkRoot))
 	require.NoError(t, beaconDB.SaveBlock(ctx, wsb))
@@ -184,7 +184,7 @@ func TestChainStartStop_GenesisZeroHashes(t *testing.T) {
 func TestChainService_InitializeBeaconChain(t *testing.T) {
 	helpers.ClearCache()
 	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
+	ctx := t.Context()
 
 	bc := setupBeaconChain(t, beaconDB)
 	var err error
@@ -226,7 +226,7 @@ func TestChainService_InitializeBeaconChain(t *testing.T) {
 }
 
 func TestChainService_CorrectGenesisRoots(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 
 	chainService := setupBeaconChain(t, beaconDB)
@@ -238,7 +238,7 @@ func TestChainService_CorrectGenesisRoots(t *testing.T) {
 	util.SaveBlock(t, ctx, beaconDB, genesisBlk)
 	s, err := util.NewBeaconState()
 	require.NoError(t, err)
-	require.NoError(t, s.SetGenesisTime(uint64(gt.Unix())))
+	require.NoError(t, s.SetGenesisTime(gt))
 	require.NoError(t, s.SetSlot(0))
 	require.NoError(t, beaconDB.SaveState(ctx, s, blkRoot))
 	require.NoError(t, beaconDB.SaveHeadBlockRoot(ctx, blkRoot))
@@ -295,7 +295,7 @@ func TestChainService_InitializeChainInfo(t *testing.T) {
 	require.NoError(t, err)
 	assert.DeepSSZEqual(t, headState.ToProtoUnsafe(), s.ToProtoUnsafe(), "Head state incorrect")
 	assert.Equal(t, c.HeadSlot(), headBlock.Block.Slot, "Head slot incorrect")
-	r, err := c.HeadRoot(context.Background())
+	r, err := c.HeadRoot(t.Context())
 	require.NoError(t, err)
 	if !bytes.Equal(headRoot[:], r) {
 		t.Error("head slot incorrect")
@@ -345,12 +345,8 @@ func TestChainService_InitializeChainInfo_SetHeadAtGenesis(t *testing.T) {
 }
 
 func TestChainService_SaveHeadNoDB(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-	ctx := context.Background()
-	fc := doublylinkedtree.New()
-	s := &Service{
-		cfg: &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB, fc), ForkChoiceStore: fc},
-	}
+	ctx := t.Context()
+	s := testServiceWithDB(t)
 	blk := util.NewBeaconBlock()
 	blk.Block.Slot = 1
 	r, err := blk.HashTreeRoot()
@@ -370,11 +366,8 @@ func TestChainService_SaveHeadNoDB(t *testing.T) {
 }
 
 func TestHasBlock_ForkChoiceAndDB_DoublyLinkedTree(t *testing.T) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg: &config{ForkChoiceStore: doublylinkedtree.New(), BeaconDB: beaconDB},
-	}
+	ctx := t.Context()
+	s := testServiceWithDB(t)
 	b := util.NewBeaconBlock()
 	wsb, err := consensusblocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
@@ -391,32 +384,26 @@ func TestHasBlock_ForkChoiceAndDB_DoublyLinkedTree(t *testing.T) {
 }
 
 func TestServiceStop_SaveCachedBlocks(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	beaconDB := testDB.SetupDB(t)
-	s := &Service{
-		cfg:            &config{BeaconDB: beaconDB, StateGen: stategen.New(beaconDB, doublylinkedtree.New())},
-		ctx:            ctx,
-		cancel:         cancel,
-		initSyncBlocks: make(map[[32]byte]interfaces.ReadOnlySignedBeaconBlock),
-	}
+	s := testServiceWithDB(t)
+	s.initSyncBlocks = make(map[[32]byte]interfaces.ReadOnlySignedBeaconBlock)
 	bb := util.NewBeaconBlock()
 	r, err := bb.Block.HashTreeRoot()
 	require.NoError(t, err)
 	wsb, err := consensusblocks.NewSignedBeaconBlock(bb)
 	require.NoError(t, err)
-	require.NoError(t, s.saveInitSyncBlock(ctx, r, wsb))
+	require.NoError(t, s.saveInitSyncBlock(s.ctx, r, wsb))
 	require.NoError(t, s.Stop())
-	require.Equal(t, true, s.cfg.BeaconDB.HasBlock(ctx, r))
+	require.Equal(t, true, s.cfg.BeaconDB.HasBlock(s.ctx, r))
 }
 
 func TestProcessChainStartTime_ReceivedFeed(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	beaconDB := testDB.SetupDB(t)
 	service := setupBeaconChain(t, beaconDB)
 	mgs := &MockClockSetter{}
 	service.clockSetter = mgs
 	gt := time.Now()
-	service.onExecutionChainStart(context.Background(), gt)
+	service.onExecutionChainStart(t.Context(), gt)
 	gs, err := beaconDB.GenesisState(ctx)
 	require.NoError(t, err)
 	require.NotEqual(t, nil, gs)
@@ -428,11 +415,8 @@ func TestProcessChainStartTime_ReceivedFeed(t *testing.T) {
 }
 
 func BenchmarkHasBlockDB(b *testing.B) {
-	beaconDB := testDB.SetupDB(b)
-	ctx := context.Background()
-	s := &Service{
-		cfg: &config{BeaconDB: beaconDB},
-	}
+	ctx := b.Context()
+	s := testServiceWithDB(b)
 	blk := util.NewBeaconBlock()
 	wsb, err := consensusblocks.NewSignedBeaconBlock(blk)
 	require.NoError(b, err)
@@ -447,11 +431,8 @@ func BenchmarkHasBlockDB(b *testing.B) {
 }
 
 func BenchmarkHasBlockForkChoiceStore_DoublyLinkedTree(b *testing.B) {
-	ctx := context.Background()
-	beaconDB := testDB.SetupDB(b)
-	s := &Service{
-		cfg: &config{ForkChoiceStore: doublylinkedtree.New(), BeaconDB: beaconDB},
-	}
+	ctx := b.Context()
+	s := testServiceWithDB(b)
 	blk := util.NewBeaconBlock()
 	r, err := blk.Block.HashTreeRoot()
 	require.NoError(b, err)

beacon-chain/blockchain/setup_forchoice.go

@@ -38,7 +38,7 @@ func (s *Service) startupHeadRoot() [32]byte {
 	if headStr == "head" {
 		root, err := s.cfg.BeaconDB.HeadBlockRoot()
 		if err != nil {
-			log.WithError(err).Error("could not get head block root, starting with finalized block as head")
+			log.WithError(err).Error("Could not get head block root, starting with finalized block as head")
 			return fRoot
 		}
 		log.Infof("Using Head root of %#x", root)
@@ -46,7 +46,7 @@ func (s *Service) startupHeadRoot() [32]byte {
 	}
 	root, err := bytesutil.DecodeHexWithLength(headStr, 32)
 	if err != nil {
-		log.WithError(err).Error("could not parse head root, starting with finalized block as head")
+		log.WithError(err).Error("Could not parse head root, starting with finalized block as head")
 		return fRoot
 	}
 	return [32]byte(root)
@@ -64,16 +64,16 @@ func (s *Service) setupForkchoiceTree(st state.BeaconState) error {
 	}
 	blk, err := s.cfg.BeaconDB.Block(s.ctx, headRoot)
 	if err != nil {
-		log.WithError(err).Error("could not get head block, starting with finalized block as head")
+		log.WithError(err).Error("Could not get head block, starting with finalized block as head")
 		return nil
 	}
 	if slots.ToEpoch(blk.Block().Slot()) < cp.Epoch {
-		log.WithField("headRoot", fmt.Sprintf("%#x", headRoot)).Error("head block is older than finalized block, starting with finalized block as head")
+		log.WithField("headRoot", fmt.Sprintf("%#x", headRoot)).Error("Head block is older than finalized block, starting with finalized block as head")
 		return nil
 	}
 	chain, err := s.buildForkchoiceChain(s.ctx, blk)
 	if err != nil {
-		log.WithError(err).Error("could not build forkchoice chain, starting with finalized block as head")
+		log.WithError(err).Error("Could not build forkchoice chain, starting with finalized block as head")
 		return nil
 	}
 	s.cfg.ForkChoiceStore.Lock()
@@ -170,6 +170,6 @@ func (s *Service) setupForkchoiceCheckpoints() error {
 		Root: fRoot}); err != nil {
 		return errors.Wrap(err, "could not update forkchoice's finalized checkpoint")
 	}
-	s.cfg.ForkChoiceStore.SetGenesisTime(uint64(s.genesisTime.Unix()))
+	s.cfg.ForkChoiceStore.SetGenesisTime(s.genesisTime)
 	return nil
 }

beacon-chain/blockchain/setup_forkchoice_test.go

@@ -32,7 +32,7 @@ func Test_startupHeadRoot(t *testing.T) {
 		})
 		defer resetCfg()
 		require.Equal(t, service.startupHeadRoot(), gr)
-		require.LogsContain(t, hook, "could not get head block root, starting with finalized block as head")
+		require.LogsContain(t, hook, "Could not get head block root, starting with finalized block as head")
 	})
 
 	st, _ := util.DeterministicGenesisState(t, 64)

beacon-chain/blockchain/setup_test.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"sync"
 	"testing"
+	"time"
 
 	"github.com/OffchainLabs/prysm/v6/async/event"
 	mock "github.com/OffchainLabs/prysm/v6/beacon-chain/blockchain/testing"
@@ -24,7 +25,9 @@ import (
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/startup"
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/state/stategen"
 	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
+	"github.com/OffchainLabs/prysm/v6/config/params"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/interfaces"
+	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"google.golang.org/protobuf/proto"
@@ -84,7 +87,7 @@ func (mb *mockBroadcaster) BroadcastLightClientFinalityUpdate(_ context.Context,
 	return nil
 }
 
-func (mb *mockBroadcaster) BroadcastDataColumn(_ [fieldparams.RootLength]byte, _ uint64, _ *ethpb.DataColumnSidecar, _ ...chan<- bool) error {
+func (mb *mockBroadcaster) BroadcastDataColumn(_ [fieldparams.RootLength]byte, _ uint64, _ *ethpb.DataColumnSidecar) error {
 	mb.broadcastCalled = true
 	return nil
 }
@@ -108,9 +111,11 @@ type testServiceRequirements struct {
 }
 
 func minimalTestService(t *testing.T, opts ...Option) (*Service, *testServiceRequirements) {
-	ctx := context.Background()
+	ctx := t.Context()
+	genesis := time.Now().Add(-1 * 4 * time.Duration(params.BeaconConfig().SlotsPerEpoch*primitives.Slot(params.BeaconConfig().SecondsPerSlot)) * time.Second) // Genesis was 4 epochs ago.
 	beaconDB := testDB.SetupDB(t)
 	fcs := doublylinkedtree.New()
+	fcs.SetGenesisTime(genesis)
 	sg := stategen.New(beaconDB, fcs)
 	notif := &mockBeaconNode{}
 	fcs.SetBalancesByRooter(sg.ActiveNonSlashedBalancesByRoot)
@@ -149,6 +154,7 @@ func minimalTestService(t *testing.T, opts ...Option) (*Service, *testServiceReq
 		WithExecutionEngineCaller(&mockExecution.EngineClient{}),
 		WithP2PBroadcaster(&mockAccessor{}),
 		WithLightClientStore(&lightclient.Store{}),
+		WithGenesisTime(genesis),
 	}
 	// append the variadic opts so they override the defaults by being processed afterwards
 	opts = append(defOpts, opts...)

beacon-chain/blockchain/testing/mock.go

@@ -555,11 +555,11 @@ func (s *ChainService) UpdateHead(ctx context.Context, slot primitives.Slot) {
 	ojc := &ethpb.Checkpoint{}
 	st, root, err := prepareForkchoiceState(ctx, slot, bytesutil.ToBytes32(s.Root), [32]byte{}, [32]byte{}, ojc, ojc)
 	if err != nil {
-		logrus.WithError(err).Error("could not update head")
+		logrus.WithError(err).Error("Could not update head")
 	}
 	err = s.ForkChoiceStore.InsertNode(ctx, st, root)
 	if err != nil {
-		logrus.WithError(err).Error("could not insert node to forkchoice")
+		logrus.WithError(err).Error("Could not insert node to forkchoice")
 	}
 }
 
@@ -640,8 +640,18 @@ func (s *ChainService) GetProposerHead() [32]byte {
 	return [32]byte{}
 }
 
+// GetAttesterHead mocks the same method in the chain service
+func (s *ChainService) GetAttesterHead() [32]byte {
+	if s.ForkChoiceStore != nil {
+		return s.ForkChoiceStore.GetAttesterHead()
+	}
+	var rootArr [32]byte
+	copy(rootArr[:], s.Root)
+	return rootArr
+}
+
 // SetForkChoiceGenesisTime mocks the same method in the chain service
-func (s *ChainService) SetForkChoiceGenesisTime(timestamp uint64) {
+func (s *ChainService) SetForkChoiceGenesisTime(timestamp time.Time) {
 	if s.ForkChoiceStore != nil {
 		s.ForkChoiceStore.SetGenesisTime(timestamp)
 	}

beacon-chain/blockchain/weak_subjectivity_checks_test.go

@@ -1,11 +1,8 @@
 package blockchain
 
 import (
-	"context"
 	"testing"
 
-	testDB "github.com/OffchainLabs/prysm/v6/beacon-chain/db/testing"
-	doublylinkedtree "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/doubly-linked-tree"
 	forkchoicetypes "github.com/OffchainLabs/prysm/v6/beacon-chain/forkchoice/types"
 	fieldparams "github.com/OffchainLabs/prysm/v6/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
@@ -18,11 +15,8 @@ import (
 )
 
 func TestService_VerifyWeakSubjectivityRoot(t *testing.T) {
-	beaconDB := testDB.SetupDB(t)
-
 	b := util.NewBeaconBlock()
 	b.Block.Slot = 1792480
-	util.SaveBlock(t, context.Background(), beaconDB, b)
 	r, err := b.Block.HashTreeRoot()
 	require.NoError(t, err)
 
@@ -69,17 +63,17 @@ func TestService_VerifyWeakSubjectivityRoot(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
+			s := testServiceWithDB(t)
+			beaconDB := s.cfg.BeaconDB
+			util.SaveBlock(t, t.Context(), beaconDB, b)
 			wv, err := NewWeakSubjectivityVerifier(tt.checkpt, beaconDB)
-			require.Equal(t, !tt.disabled, wv.enabled)
 			require.NoError(t, err)
-			fcs := doublylinkedtree.New()
-			s := &Service{
-				cfg:        &config{BeaconDB: beaconDB, WeakSubjectivityCheckpt: tt.checkpt, ForkChoiceStore: fcs},
-				wsVerifier: wv,
-			}
-			require.NoError(t, fcs.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Epoch: tt.finalizedEpoch}))
+			s.cfg.WeakSubjectivityCheckpt = tt.checkpt
+			s.wsVerifier = wv
+			require.Equal(t, !tt.disabled, wv.enabled)
+			require.NoError(t, s.cfg.ForkChoiceStore.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Epoch: tt.finalizedEpoch}))
 			cp := s.cfg.ForkChoiceStore.FinalizedCheckpoint()
-			err = s.wsVerifier.VerifyWeakSubjectivity(context.Background(), cp.Epoch)
+			err = s.wsVerifier.VerifyWeakSubjectivity(t.Context(), cp.Epoch)
 			if tt.wantErr == nil {
 				require.NoError(t, err)
 			} else {

beacon-chain/builder/service.go

@@ -24,7 +24,7 @@ var ErrNoBuilder = errors.New("builder endpoint not configured")
 
 // BlockBuilder defines the interface for interacting with the block builder
 type BlockBuilder interface {
-	SubmitBlindedBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error)
+	SubmitBlindedBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error)
 	GetHeader(ctx context.Context, slot primitives.Slot, parentHash [32]byte, pubKey [48]byte) (builder.SignedBid, error)
 	RegisterValidator(ctx context.Context, reg []*ethpb.SignedValidatorRegistrationV1) error
 	RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error)
@@ -68,7 +68,7 @@ func NewService(ctx context.Context, opts ...Option) (*Service, error) {
 			log.WithError(err).Error("Failed to check builder status")
 		} else {
 			log.WithField("endpoint", s.c.NodeURL()).Info("Builder has been configured")
-			log.Warn("Outsourcing block construction to external builders adds non-trivial delay to block propagation time.  " +
+			log.Warn("Outsourcing block construction to external builders adds non-trivial delay to block propagation time. " +
 				"Builder-constructed blocks or fallback blocks may get orphaned. Use at your own risk!")
 		}
 	}
@@ -87,7 +87,7 @@ func (s *Service) Stop() error {
 }
 
 // SubmitBlindedBlock submits a blinded block to the builder relay network.
-func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error) {
 	ctx, span := trace.StartSpan(ctx, "builder.SubmitBlindedBlock")
 	defer span.End()
 	start := time.Now()

beacon-chain/builder/service_test.go

@@ -1,7 +1,6 @@
 package builder
 
 import (
-	"context"
 	"testing"
 	"time"
 
@@ -15,19 +14,19 @@ import (
 )
 
 func Test_NewServiceWithBuilder(t *testing.T) {
-	s, err := NewService(context.Background(), WithBuilderClient(&buildertesting.MockClient{}))
+	s, err := NewService(t.Context(), WithBuilderClient(&buildertesting.MockClient{}))
 	require.NoError(t, err)
 	assert.Equal(t, true, s.Configured())
 }
 
 func Test_NewServiceWithoutBuilder(t *testing.T) {
-	s, err := NewService(context.Background())
+	s, err := NewService(t.Context())
 	require.NoError(t, err)
 	assert.Equal(t, false, s.Configured())
 }
 
 func Test_RegisterValidator(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	db := dbtesting.SetupDB(t)
 	headFetcher := &blockchainTesting.ChainService{}
 	builder := buildertesting.NewClient()
@@ -40,7 +39,7 @@ func Test_RegisterValidator(t *testing.T) {
 }
 
 func Test_RegisterValidator_WithCache(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	headFetcher := &blockchainTesting.ChainService{}
 	builder := buildertesting.NewClient()
 	s, err := NewService(ctx, WithRegistrationCache(), WithHeadFetcher(headFetcher), WithBuilderClient(&builder))
@@ -55,16 +54,16 @@ func Test_RegisterValidator_WithCache(t *testing.T) {
 }
 
 func Test_BuilderMethodsWithouClient(t *testing.T) {
-	s, err := NewService(context.Background())
+	s, err := NewService(t.Context())
 	require.NoError(t, err)
 	assert.Equal(t, false, s.Configured())
 
-	_, err = s.GetHeader(context.Background(), 0, [32]byte{}, [48]byte{})
+	_, err = s.GetHeader(t.Context(), 0, [32]byte{}, [48]byte{})
 	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
 
-	_, _, err = s.SubmitBlindedBlock(context.Background(), nil)
+	_, _, err = s.SubmitBlindedBlock(t.Context(), nil)
 	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
 
-	err = s.RegisterValidator(context.Background(), nil)
+	err = s.RegisterValidator(t.Context(), nil)
 	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
 }

beacon-chain/builder/testing/mock.go

@@ -29,6 +29,7 @@ type MockBuilderService struct {
 	PayloadCapella        *v1.ExecutionPayloadCapella
 	PayloadDeneb          *v1.ExecutionPayloadDeneb
 	BlobBundle            *v1.BlobsBundle
+	BlobBundleV2          *v1.BlobsBundleV2
 	ErrSubmitBlindedBlock error
 	Bid                   *ethpb.SignedBuilderBid
 	BidCapella            *ethpb.SignedBuilderBidCapella
@@ -46,7 +47,7 @@ func (s *MockBuilderService) Configured() bool {
 }
 
 // SubmitBlindedBlock for mocking.
-func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, b interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, b interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, v1.BlobsBundler, error) {
 	switch b.Version() {
 	case version.Bellatrix:
 		w, err := blocks.WrappedExecutionPayload(s.Payload)
@@ -66,6 +67,16 @@ func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, b interfaces.
 			return nil, nil, errors.Wrap(err, "could not wrap deneb payload")
 		}
 		return w, s.BlobBundle, s.ErrSubmitBlindedBlock
+	case version.Fulu:
+		w, err := blocks.WrappedExecutionPayloadDeneb(s.PayloadDeneb)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "could not wrap deneb payload for fulu")
+		}
+		// For Fulu, return BlobsBundleV2 if available, otherwise regular BlobsBundle
+		if s.BlobBundleV2 != nil {
+			return w, s.BlobBundleV2, s.ErrSubmitBlindedBlock
+		}
+		return w, s.BlobBundle, s.ErrSubmitBlindedBlock
 	default:
 		return nil, nil, errors.New("unknown block version for mocking")
 	}

beacon-chain/cache/BUILD.bazel

@@ -15,6 +15,7 @@ go_library(
         "common.go",
         "doc.go",
         "error.go",
+        "inclusion_list.go",
         "interfaces.go",
         "payload_id.go",
         "proposer_indices.go",
@@ -75,6 +76,7 @@ go_test(
         "checkpoint_state_test.go",
         "committee_fuzz_test.go",
         "committee_test.go",
+        "inclusion_list_test.go",
         "payload_id_test.go",
         "private_access_test.go",
         "proposer_indices_test.go",

beacon-chain/cache/committee_fuzz_test.go

@@ -3,7 +3,6 @@
 package cache
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/testing/assert"
@@ -30,8 +29,8 @@ func TestCommitteeCache_FuzzCommitteesByEpoch(t *testing.T) {
 
 	for i := 0; i < 100000; i++ {
 		fuzzer.Fuzz(c)
-		require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), c))
-		_, err := cache.Committee(context.Background(), 0, c.Seed, 0)
+		require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), c))
+		_, err := cache.Committee(t.Context(), 0, c.Seed, 0)
 		require.NoError(t, err)
 	}
 
@@ -45,9 +44,9 @@ func TestCommitteeCache_FuzzActiveIndices(t *testing.T) {
 
 	for i := 0; i < 100000; i++ {
 		fuzzer.Fuzz(c)
-		require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), c))
+		require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), c))
 
-		indices, err := cache.ActiveIndices(context.Background(), c.Seed)
+		indices, err := cache.ActiveIndices(t.Context(), c.Seed)
 		require.NoError(t, err)
 		assert.DeepEqual(t, c.SortedIndices, indices)
 	}

beacon-chain/cache/committee_test.go

@@ -44,15 +44,15 @@ func TestCommitteeCache_CommitteesByEpoch(t *testing.T) {
 
 	slot := params.BeaconConfig().SlotsPerEpoch
 	committeeIndex := primitives.CommitteeIndex(1)
-	indices, err := cache.Committee(context.Background(), slot, item.Seed, committeeIndex)
+	indices, err := cache.Committee(t.Context(), slot, item.Seed, committeeIndex)
 	require.NoError(t, err)
 	if indices != nil {
 		t.Error("Expected committee not to exist in empty cache")
 	}
-	require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), item))
+	require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), item))
 
 	wantedIndex := primitives.CommitteeIndex(0)
-	indices, err = cache.Committee(context.Background(), slot, item.Seed, wantedIndex)
+	indices, err = cache.Committee(t.Context(), slot, item.Seed, wantedIndex)
 	require.NoError(t, err)
 
 	start, end := startEndIndices(item, uint64(wantedIndex))
@@ -63,15 +63,15 @@ func TestCommitteeCache_ActiveIndices(t *testing.T) {
 	cache := NewCommitteesCache()
 
 	item := &Committees{Seed: [32]byte{'A'}, SortedIndices: []primitives.ValidatorIndex{1, 2, 3, 4, 5, 6}}
-	indices, err := cache.ActiveIndices(context.Background(), item.Seed)
+	indices, err := cache.ActiveIndices(t.Context(), item.Seed)
 	require.NoError(t, err)
 	if indices != nil {
 		t.Error("Expected committee not to exist in empty cache")
 	}
 
-	require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), item))
+	require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), item))
 
-	indices, err = cache.ActiveIndices(context.Background(), item.Seed)
+	indices, err = cache.ActiveIndices(t.Context(), item.Seed)
 	require.NoError(t, err)
 	assert.DeepEqual(t, item.SortedIndices, indices)
 }
@@ -80,13 +80,13 @@ func TestCommitteeCache_ActiveCount(t *testing.T) {
 	cache := NewCommitteesCache()
 
 	item := &Committees{Seed: [32]byte{'A'}, SortedIndices: []primitives.ValidatorIndex{1, 2, 3, 4, 5, 6}}
-	count, err := cache.ActiveIndicesCount(context.Background(), item.Seed)
+	count, err := cache.ActiveIndicesCount(t.Context(), item.Seed)
 	require.NoError(t, err)
 	assert.Equal(t, 0, count, "Expected active count not to exist in empty cache")
 
-	require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), item))
+	require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), item))
 
-	count, err = cache.ActiveIndicesCount(context.Background(), item.Seed)
+	count, err = cache.ActiveIndicesCount(t.Context(), item.Seed)
 	require.NoError(t, err)
 	assert.Equal(t, len(item.SortedIndices), count)
 }
@@ -100,7 +100,7 @@ func TestCommitteeCache_CanRotate(t *testing.T) {
 	for i := start; i < end; i++ {
 		s := []byte(strconv.Itoa(i))
 		item := &Committees{Seed: bytesutil.ToBytes32(s)}
-		require.NoError(t, cache.AddCommitteeShuffledList(context.Background(), item))
+		require.NoError(t, cache.AddCommitteeShuffledList(t.Context(), item))
 	}
 
 	k := cache.CommitteeCache.Keys()
@@ -130,7 +130,7 @@ func TestCommitteeCacheOutOfRange(t *testing.T) {
 	assert.NoError(t, err)
 	_ = cache.CommitteeCache.Add(key, comms)
 
-	_, err = cache.Committee(context.Background(), 0, seed, math.MaxUint64) // Overflow!
+	_, err = cache.Committee(t.Context(), 0, seed, math.MaxUint64) // Overflow!
 	require.NotNil(t, err, "Did not fail as expected")
 }
 
@@ -138,15 +138,15 @@ func TestCommitteeCache_DoesNothingWhenCancelledContext(t *testing.T) {
 	cache := NewCommitteesCache()
 
 	item := &Committees{Seed: [32]byte{'A'}, SortedIndices: []primitives.ValidatorIndex{1, 2, 3, 4, 5, 6}}
-	count, err := cache.ActiveIndicesCount(context.Background(), item.Seed)
+	count, err := cache.ActiveIndicesCount(t.Context(), item.Seed)
 	require.NoError(t, err)
 	assert.Equal(t, 0, count, "Expected active count not to exist in empty cache")
 
-	cancelled, cancel := context.WithCancel(context.Background())
+	cancelled, cancel := context.WithCancel(t.Context())
 	cancel()
 	require.ErrorIs(t, cache.AddCommitteeShuffledList(cancelled, item), context.Canceled)
 
-	count, err = cache.ActiveIndicesCount(context.Background(), item.Seed)
+	count, err = cache.ActiveIndicesCount(t.Context(), item.Seed)
 	require.NoError(t, err)
 	assert.Equal(t, 0, count)
 }

beacon-chain/cache/depositsnapshot/deposit_cache_test.go

@@ -2,7 +2,6 @@ package depositsnapshot
 
 import (
 	"bytes"
-	"context"
 	"fmt"
 	"math/big"
 	"testing"
@@ -55,7 +54,7 @@ func TestAllDeposits_ReturnsAllDeposits(t *testing.T) {
 	}
 	dc.deposits = deposits
 
-	d := dc.AllDeposits(context.Background(), nil)
+	d := dc.AllDeposits(t.Context(), nil)
 	assert.Equal(t, len(deposits), len(d))
 }
 
@@ -95,7 +94,7 @@ func TestAllDeposits_FiltersDepositUpToAndIncludingBlockNumber(t *testing.T) {
 	}
 	dc.deposits = deposits
 
-	d := dc.AllDeposits(context.Background(), big.NewInt(11))
+	d := dc.AllDeposits(t.Context(), big.NewInt(11))
 	assert.Equal(t, 5, len(d))
 }
 
@@ -127,7 +126,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				DepositRoot:     wantedRoot,
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(13))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(13))
 		assert.Equal(t, 4, int(n))
 		require.DeepEqual(t, wantedRoot, root[:])
 	})
@@ -143,7 +142,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				DepositRoot:     wantedRoot,
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(10))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(10))
 		assert.Equal(t, 1, int(n))
 		require.DeepEqual(t, wantedRoot, root[:])
 	})
@@ -169,7 +168,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				Deposit:         &ethpb.Deposit{},
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(10))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(10))
 		assert.Equal(t, 2, int(n))
 		require.DeepEqual(t, wantedRoot, root[:])
 	})
@@ -185,7 +184,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				DepositRoot:     wantedRoot,
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(7))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(7))
 		assert.Equal(t, 0, int(n))
 		require.DeepEqual(t, params.BeaconConfig().ZeroHash, root)
 	})
@@ -201,7 +200,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				DepositRoot:     wantedRoot,
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(10))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(10))
 		assert.Equal(t, 1, int(n))
 		require.DeepEqual(t, wantedRoot, root[:])
 	})
@@ -237,7 +236,7 @@ func TestDepositsNumberAndRootAtHeight(t *testing.T) {
 				Deposit:         &ethpb.Deposit{},
 			},
 		}
-		n, root := dc.DepositsNumberAndRootAtHeight(context.Background(), big.NewInt(9))
+		n, root := dc.DepositsNumberAndRootAtHeight(t.Context(), big.NewInt(9))
 		assert.Equal(t, 3, int(n))
 		require.DeepEqual(t, wantedRoot, root[:])
 	})
@@ -288,10 +287,10 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 			},
 		},
 	}
-	dc.InsertDepositContainers(context.Background(), ctrs)
+	dc.InsertDepositContainers(t.Context(), ctrs)
 
 	pk1 := bytesutil.PadTo([]byte("pk1"), 48)
-	dep, blkNum := dc.DepositByPubkey(context.Background(), pk1)
+	dep, blkNum := dc.DepositByPubkey(t.Context(), pk1)
 
 	if dep == nil || !bytes.Equal(dep.Data.PublicKey, pk1) {
 		t.Error("Returned wrong deposit")
@@ -303,7 +302,7 @@ func TestDepositByPubkey_ReturnsFirstMatchingDeposit(t *testing.T) {
 func TestInsertDepositContainers_NotNil(t *testing.T) {
 	dc, err := New()
 	require.NoError(t, err)
-	dc.InsertDepositContainers(context.Background(), nil)
+	dc.InsertDepositContainers(t.Context(), nil)
 	assert.DeepEqual(t, []*ethpb.DepositContainer{}, dc.deposits)
 }
 
@@ -359,10 +358,10 @@ func TestFinalizedDeposits_DepositsCachedCorrectly(t *testing.T) {
 		err = dc.finalizedDeposits.depositTree.pushLeaf(root)
 		require.NoError(t, err)
 	}
-	err = dc.InsertFinalizedDeposits(context.Background(), 2, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 2, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	cachedDeposits, err := dc.FinalizedDeposits(context.Background())
+	cachedDeposits, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
 	assert.Equal(t, int64(2), cachedDeposits.MerkleTrieIndex())
@@ -425,15 +424,15 @@ func TestFinalizedDeposits_UtilizesPreviouslyCachedDeposits(t *testing.T) {
 		err = dc.finalizedDeposits.Deposits().Insert(root[:], 0)
 		require.NoError(t, err)
 	}
-	err = dc.InsertFinalizedDeposits(context.Background(), 1, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 1, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	err = dc.InsertFinalizedDeposits(context.Background(), 2, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 2, [32]byte{}, 0)
 	require.NoError(t, err)
 
 	dc.deposits = append(dc.deposits, []*ethpb.DepositContainer{newFinalizedDeposit}...)
 
-	cachedDeposits, err := dc.FinalizedDeposits(context.Background())
+	cachedDeposits, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
 	require.Equal(t, int64(1), cachedDeposits.MerkleTrieIndex())
@@ -459,10 +458,10 @@ func TestFinalizedDeposits_HandleZeroDeposits(t *testing.T) {
 	dc, err := New()
 	require.NoError(t, err)
 
-	err = dc.InsertFinalizedDeposits(context.Background(), 2, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 2, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	cachedDeposits, err := dc.FinalizedDeposits(context.Background())
+	cachedDeposits, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
 	assert.Equal(t, int64(-1), cachedDeposits.MerkleTrieIndex())
@@ -509,10 +508,10 @@ func TestFinalizedDeposits_HandleSmallerThanExpectedDeposits(t *testing.T) {
 	}
 	dc.deposits = finalizedDeposits
 
-	err = dc.InsertFinalizedDeposits(context.Background(), 5, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 5, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	cachedDeposits, err := dc.FinalizedDeposits(context.Background())
+	cachedDeposits, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
 	assert.Equal(t, int64(2), cachedDeposits.MerkleTrieIndex())
@@ -592,14 +591,14 @@ func TestFinalizedDeposits_HandleLowerEth1DepositIndex(t *testing.T) {
 	}
 	dc.deposits = finalizedDeposits
 
-	err = dc.InsertFinalizedDeposits(context.Background(), 5, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 5, [32]byte{}, 0)
 	require.NoError(t, err)
 
 	// Reinsert finalized deposits with a lower index.
-	err = dc.InsertFinalizedDeposits(context.Background(), 2, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 2, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	cachedDeposits, err := dc.FinalizedDeposits(context.Background())
+	cachedDeposits, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
 	require.NotNil(t, cachedDeposits, "Deposits not cached")
 	assert.Equal(t, int64(5), cachedDeposits.MerkleTrieIndex())
@@ -670,10 +669,10 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits(t *testing.T) {
 			Index:       3,
 			DepositRoot: rootCreator('D'),
 		})
-	err = dc.InsertFinalizedDeposits(context.Background(), 1, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 1, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	deps := dc.NonFinalizedDeposits(context.Background(), 1, nil)
+	deps := dc.NonFinalizedDeposits(t.Context(), 1, nil)
 	assert.Equal(t, 2, len(deps))
 }
 
@@ -681,7 +680,7 @@ func TestNonFinalizedDeposits_ReturnsAllNonFinalizedDeposits_Nil(t *testing.T) {
 	dc, err := New()
 	require.NoError(t, err)
 
-	deps := dc.NonFinalizedDeposits(context.Background(), 0, nil)
+	deps := dc.NonFinalizedDeposits(t.Context(), 0, nil)
 	assert.Equal(t, 0, len(deps))
 }
 
@@ -740,10 +739,10 @@ func TestNonFinalizedDeposits_ReturnsNonFinalizedDepositsUpToBlockNumber(t *test
 			Index:       3,
 			DepositRoot: rootCreator('D'),
 		})
-	err = dc.InsertFinalizedDeposits(context.Background(), 1, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 1, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	deps := dc.NonFinalizedDeposits(context.Background(), 1, big.NewInt(10))
+	deps := dc.NonFinalizedDeposits(t.Context(), 1, big.NewInt(10))
 	assert.Equal(t, 1, len(deps))
 }
 
@@ -785,21 +784,21 @@ func TestFinalizedDeposits_ReturnsTrieCorrectly(t *testing.T) {
 	assert.NoError(t, err)
 
 	// Perform this in a nonsensical ordering
-	err = dc.InsertFinalizedDeposits(context.Background(), 1, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 1, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 2, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 2, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 3, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 3, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 4, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 4, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 4, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 4, [32]byte{}, 0)
 	require.NoError(t, err)
 
 	// Mimic finalized deposit trie fetch.
-	fd, err := dc.FinalizedDeposits(context.Background())
+	fd, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
-	deps := dc.NonFinalizedDeposits(context.Background(), fd.MerkleTrieIndex(), nil)
+	deps := dc.NonFinalizedDeposits(t.Context(), fd.MerkleTrieIndex(), nil)
 	insertIndex := fd.MerkleTrieIndex() + 1
 
 	for _, dep := range deps {
@@ -810,24 +809,24 @@ func TestFinalizedDeposits_ReturnsTrieCorrectly(t *testing.T) {
 		}
 		insertIndex++
 	}
-	err = dc.InsertFinalizedDeposits(context.Background(), 5, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 5, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 6, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 6, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 9, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 9, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 12, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 12, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 15, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 15, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 15, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 15, [32]byte{}, 0)
 	require.NoError(t, err)
-	err = dc.InsertFinalizedDeposits(context.Background(), 14, [32]byte{}, 0)
+	err = dc.InsertFinalizedDeposits(t.Context(), 14, [32]byte{}, 0)
 	require.NoError(t, err)
 
-	fd, err = dc.FinalizedDeposits(context.Background())
+	fd, err = dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
-	deps = dc.NonFinalizedDeposits(context.Background(), fd.MerkleTrieIndex(), nil)
+	deps = dc.NonFinalizedDeposits(t.Context(), fd.MerkleTrieIndex(), nil)
 	insertIndex = fd.MerkleTrieIndex() + 1
 
 	for _, dep := range dc.deposits {
@@ -888,9 +887,9 @@ func TestMin(t *testing.T) {
 	}
 	dc.deposits = finalizedDeposits
 
-	fd, err := dc.FinalizedDeposits(context.Background())
+	fd, err := dc.FinalizedDeposits(t.Context())
 	require.NoError(t, err)
-	deps := dc.NonFinalizedDeposits(context.Background(), fd.MerkleTrieIndex(), big.NewInt(16))
+	deps := dc.NonFinalizedDeposits(t.Context(), fd.MerkleTrieIndex(), big.NewInt(16))
 	insertIndex := fd.MerkleTrieIndex() + 1
 	for _, dep := range deps {
 		depHash, err := dep.Data.HashTreeRoot()
@@ -908,28 +907,28 @@ func TestDepositMap_WorksCorrectly(t *testing.T) {
 	require.NoError(t, err)
 
 	pk0 := bytesutil.PadTo([]byte("pk0"), 48)
-	dep, _ := dc.DepositByPubkey(context.Background(), pk0)
+	dep, _ := dc.DepositByPubkey(t.Context(), pk0)
 	var nilDep *ethpb.Deposit
 	assert.DeepEqual(t, nilDep, dep)
 
 	dep = &ethpb.Deposit{Proof: makeDepositProof(), Data: &ethpb.Deposit_Data{PublicKey: pk0, Amount: 1000}}
-	assert.NoError(t, dc.InsertDeposit(context.Background(), dep, 1000, 0, [32]byte{}))
+	assert.NoError(t, dc.InsertDeposit(t.Context(), dep, 1000, 0, [32]byte{}))
 
-	dep, _ = dc.DepositByPubkey(context.Background(), pk0)
+	dep, _ = dc.DepositByPubkey(t.Context(), pk0)
 	assert.NotEqual(t, nilDep, dep)
 	assert.Equal(t, uint64(1000), dep.Data.Amount)
 
 	dep = &ethpb.Deposit{Proof: makeDepositProof(), Data: &ethpb.Deposit_Data{PublicKey: pk0, Amount: 10000}}
-	assert.NoError(t, dc.InsertDeposit(context.Background(), dep, 1000, 1, [32]byte{}))
+	assert.NoError(t, dc.InsertDeposit(t.Context(), dep, 1000, 1, [32]byte{}))
 
 	// Make sure we have the same deposit returned over here.
-	dep, _ = dc.DepositByPubkey(context.Background(), pk0)
+	dep, _ = dc.DepositByPubkey(t.Context(), pk0)
 	assert.NotEqual(t, nilDep, dep)
 	assert.Equal(t, uint64(1000), dep.Data.Amount)
 
 	// Make sure another key doesn't work.
 	pk1 := bytesutil.PadTo([]byte("pk1"), 48)
-	dep, _ = dc.DepositByPubkey(context.Background(), pk1)
+	dep, _ = dc.DepositByPubkey(t.Context(), pk1)
 	assert.DeepEqual(t, nilDep, dep)
 }
 

beacon-chain/cache/depositsnapshot/deposit_fetcher_test.go

@@ -1,7 +1,6 @@
 package depositsnapshot
 
 import (
-	"context"
 	"math/big"
 	"testing"
 
@@ -13,14 +12,14 @@ var _ PendingDepositsFetcher = (*Cache)(nil)
 
 func TestInsertPendingDeposit_OK(t *testing.T) {
 	dc := Cache{}
-	dc.InsertPendingDeposit(context.Background(), &ethpb.Deposit{}, 111, 100, [32]byte{})
+	dc.InsertPendingDeposit(t.Context(), &ethpb.Deposit{}, 111, 100, [32]byte{})
 
 	assert.Equal(t, 1, len(dc.pendingDeposits), "deposit not inserted")
 }
 
 func TestInsertPendingDeposit_ignoresNilDeposit(t *testing.T) {
 	dc := Cache{}
-	dc.InsertPendingDeposit(context.Background(), nil /*deposit*/, 0 /*blockNum*/, 0, [32]byte{})
+	dc.InsertPendingDeposit(t.Context(), nil /*deposit*/, 0 /*blockNum*/, 0, [32]byte{})
 
 	assert.Equal(t, 0, len(dc.pendingDeposits))
 }
@@ -34,13 +33,13 @@ func TestPendingDeposits_OK(t *testing.T) {
 		{Eth1BlockHeight: 6, Deposit: &ethpb.Deposit{Proof: [][]byte{[]byte("c")}}},
 	}
 
-	deposits := dc.PendingDeposits(context.Background(), big.NewInt(4))
+	deposits := dc.PendingDeposits(t.Context(), big.NewInt(4))
 	expected := []*ethpb.Deposit{
 		{Proof: [][]byte{[]byte("A")}},
 		{Proof: [][]byte{[]byte("B")}},
 	}
 	assert.DeepSSZEqual(t, expected, deposits)
 
-	all := dc.PendingDeposits(context.Background(), nil)
+	all := dc.PendingDeposits(t.Context(), nil)
 	assert.Equal(t, len(dc.pendingDeposits), len(all), "PendingDeposits(ctx, nil) did not return all deposits")
 }

beacon-chain/cache/depositsnapshot/deposit_pruner_test.go

@@ -1,7 +1,6 @@
 package depositsnapshot
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/encoding/bytesutil"
@@ -22,7 +21,7 @@ func TestPrunePendingDeposits_ZeroMerkleIndex(t *testing.T) {
 		{Eth1BlockHeight: 12, Index: 12},
 	}
 
-	dc.PrunePendingDeposits(context.Background(), 0)
+	dc.PrunePendingDeposits(t.Context(), 0)
 	expected := []*ethpb.DepositContainer{
 		{Eth1BlockHeight: 2, Index: 2},
 		{Eth1BlockHeight: 4, Index: 4},
@@ -46,7 +45,7 @@ func TestPrunePendingDeposits_OK(t *testing.T) {
 		{Eth1BlockHeight: 12, Index: 12},
 	}
 
-	dc.PrunePendingDeposits(context.Background(), 6)
+	dc.PrunePendingDeposits(t.Context(), 6)
 	expected := []*ethpb.DepositContainer{
 		{Eth1BlockHeight: 6, Index: 6},
 		{Eth1BlockHeight: 8, Index: 8},
@@ -65,7 +64,7 @@ func TestPrunePendingDeposits_OK(t *testing.T) {
 		{Eth1BlockHeight: 12, Index: 12},
 	}
 
-	dc.PrunePendingDeposits(context.Background(), 10)
+	dc.PrunePendingDeposits(t.Context(), 10)
 	expected = []*ethpb.DepositContainer{
 		{Eth1BlockHeight: 10, Index: 10},
 		{Eth1BlockHeight: 12, Index: 12},
@@ -86,7 +85,7 @@ func TestPruneAllPendingDeposits(t *testing.T) {
 		{Eth1BlockHeight: 12, Index: 12},
 	}
 
-	dc.PruneAllPendingDeposits(context.Background())
+	dc.PruneAllPendingDeposits(t.Context())
 	expected := []*ethpb.DepositContainer{}
 
 	assert.DeepEqual(t, expected, dc.pendingDeposits)
@@ -128,10 +127,10 @@ func TestPruneProofs_Ok(t *testing.T) {
 	}
 
 	for _, ins := range deposits {
-		assert.NoError(t, dc.InsertDeposit(context.Background(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
+		assert.NoError(t, dc.InsertDeposit(t.Context(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
 	}
 
-	require.NoError(t, dc.PruneProofs(context.Background(), 1))
+	require.NoError(t, dc.PruneProofs(t.Context(), 1))
 
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[0].Deposit.Proof)
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[1].Deposit.Proof)
@@ -173,10 +172,10 @@ func TestPruneProofs_SomeAlreadyPruned(t *testing.T) {
 	}
 
 	for _, ins := range deposits {
-		assert.NoError(t, dc.InsertDeposit(context.Background(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
+		assert.NoError(t, dc.InsertDeposit(t.Context(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
 	}
 
-	require.NoError(t, dc.PruneProofs(context.Background(), 2))
+	require.NoError(t, dc.PruneProofs(t.Context(), 2))
 
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[2].Deposit.Proof)
 }
@@ -217,10 +216,10 @@ func TestPruneProofs_PruneAllWhenDepositIndexTooBig(t *testing.T) {
 	}
 
 	for _, ins := range deposits {
-		assert.NoError(t, dc.InsertDeposit(context.Background(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
+		assert.NoError(t, dc.InsertDeposit(t.Context(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
 	}
 
-	require.NoError(t, dc.PruneProofs(context.Background(), 99))
+	require.NoError(t, dc.PruneProofs(t.Context(), 99))
 
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[0].Deposit.Proof)
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[1].Deposit.Proof)
@@ -264,10 +263,10 @@ func TestPruneProofs_CorrectlyHandleLastIndex(t *testing.T) {
 	}
 
 	for _, ins := range deposits {
-		assert.NoError(t, dc.InsertDeposit(context.Background(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
+		assert.NoError(t, dc.InsertDeposit(t.Context(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
 	}
 
-	require.NoError(t, dc.PruneProofs(context.Background(), 4))
+	require.NoError(t, dc.PruneProofs(t.Context(), 4))
 
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[0].Deposit.Proof)
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[1].Deposit.Proof)
@@ -311,10 +310,10 @@ func TestPruneAllProofs(t *testing.T) {
 	}
 
 	for _, ins := range deposits {
-		assert.NoError(t, dc.InsertDeposit(context.Background(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
+		assert.NoError(t, dc.InsertDeposit(t.Context(), ins.deposit, ins.blkNum, ins.index, [32]byte{}))
 	}
 
-	dc.PruneAllProofs(context.Background())
+	dc.PruneAllProofs(t.Context())
 
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[0].Deposit.Proof)
 	assert.DeepEqual(t, [][]byte(nil), dc.deposits[1].Deposit.Proof)

beacon-chain/cache/inclusion_list.go

@@ -0,0 +1,105 @@
+package cache
+
+import (
+	"crypto/sha256"
+	"sync"
+
+	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
+)
+
+type InclusionLists struct {
+	mu  sync.RWMutex
+	ils map[primitives.Slot]map[primitives.ValidatorIndex]struct {
+		txs                    [][]byte
+		seenTwice              bool
+		isBeforeFreezeDeadline bool
+	}
+}
+
+// NewInclusionLists initializes a new InclusionLists instance.
+func NewInclusionLists() *InclusionLists {
+	return &InclusionLists{
+		ils: make(map[primitives.Slot]map[primitives.ValidatorIndex]struct {
+			txs                    [][]byte
+			seenTwice              bool
+			isBeforeFreezeDeadline bool
+		}),
+	}
+}
+
+// Add adds a set of transactions for a specific slot and validator index.
+func (i *InclusionLists) Add(slot primitives.Slot, validatorIndex primitives.ValidatorIndex, txs [][]byte, isBeforeFreezeDeadline bool) {
+	i.mu.Lock()
+	defer i.mu.Unlock()
+
+	if _, ok := i.ils[slot]; !ok {
+		i.ils[slot] = make(map[primitives.ValidatorIndex]struct {
+			txs                    [][]byte
+			seenTwice              bool
+			isBeforeFreezeDeadline bool
+		})
+	}
+
+	entry := i.ils[slot][validatorIndex]
+	if entry.seenTwice {
+		return // No need to modify if already marked as seen twice.
+	}
+
+	if entry.txs == nil {
+		entry.txs = txs
+		entry.isBeforeFreezeDeadline = isBeforeFreezeDeadline
+	} else {
+		entry.seenTwice = true
+		entry.txs = nil // Clear transactions to save space if seen twice.
+	}
+	i.ils[slot][validatorIndex] = entry
+}
+
+// Get retrieves unique transactions for a specific slot.
+func (i *InclusionLists) Get(slot primitives.Slot) [][]byte {
+	i.mu.RLock()
+	defer i.mu.RUnlock()
+
+	ils, exists := i.ils[slot]
+	if !exists {
+		return [][]byte{}
+	}
+
+	var uniqueTxs [][]byte
+	seen := make(map[[32]byte]struct{})
+	for _, entry := range ils {
+		if !entry.isBeforeFreezeDeadline {
+			continue
+		}
+		for _, tx := range entry.txs {
+			hash := sha256.Sum256(tx)
+			if _, duplicate := seen[hash]; !duplicate {
+				uniqueTxs = append(uniqueTxs, tx)
+				seen[hash] = struct{}{}
+			}
+		}
+	}
+	return uniqueTxs
+}
+
+// Delete removes all inclusion lists for a specific slot.
+func (i *InclusionLists) Delete(slot primitives.Slot) {
+	i.mu.Lock()
+	defer i.mu.Unlock()
+
+	delete(i.ils, slot)
+}
+
+// SeenTwice checks if a validator's transactions were marked as seen twice for a specific slot.
+func (i *InclusionLists) SeenTwice(slot primitives.Slot, idx primitives.ValidatorIndex) bool {
+	i.mu.RLock()
+	defer i.mu.RUnlock()
+
+	ils, exists := i.ils[slot]
+	if !exists {
+		return false
+	}
+
+	entry, exists := ils[idx]
+	return exists && entry.seenTwice
+}

beacon-chain/cache/inclusion_list_test.go

@@ -0,0 +1,81 @@
+package cache
+
+import (
+	"bytes"
+	"testing"
+)
+
+func TestInclusionLists(t *testing.T) {
+	il := NewInclusionLists()
+
+	tests := []struct {
+		name          string
+		actions       func()
+		expectedGet   [][]byte
+		expectedTwice bool
+	}{
+		{
+			name: "Add single validator with unique transactions",
+			actions: func() {
+				il.Add(1, 1, [][]byte{[]byte("tx1"), []byte("tx2")}, true)
+			},
+			expectedGet:   [][]byte{[]byte("tx1"), []byte("tx2")},
+			expectedTwice: false,
+		},
+		{
+			name: "Add duplicate transactions for second validator",
+			actions: func() {
+				il.Add(1, 2, [][]byte{[]byte("tx1"), []byte("tx3")}, true)
+			},
+			expectedGet:   [][]byte{[]byte("tx1"), []byte("tx2"), []byte("tx3")},
+			expectedTwice: false,
+		},
+		{
+			name: "Mark validator as seen twice",
+			actions: func() {
+				il.Add(1, 1, [][]byte{[]byte("tx4")}, true)
+			},
+			expectedGet:   [][]byte{[]byte("tx1"), []byte("tx3")},
+			expectedTwice: true,
+		},
+		{
+			name: "Delete a slot",
+			actions: func() {
+				il.Delete(1)
+			},
+			expectedGet:   nil,
+			expectedTwice: false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			tt.actions()
+
+			// Check Get results
+			got := il.Get(1)
+			if !compareTransactions(got, tt.expectedGet) {
+				t.Errorf("unexpected Get result: got %v, want %v", got, tt.expectedGet)
+			}
+
+			// Check SeenTwice result for validator 1
+			gotTwice := il.SeenTwice(1, 1)
+			if gotTwice != tt.expectedTwice {
+				t.Errorf("unexpected SeenTwice result: got %v, want %v", gotTwice, tt.expectedTwice)
+			}
+		})
+	}
+}
+
+// compareTransactions compares two slices of byte slices for equality.
+func compareTransactions(a, b [][]byte) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i := range a {
+		if !bytes.Equal(a[i], b[i]) {
+			return false
+		}
+	}
+	return true
+}

beacon-chain/cache/registration_test.go

@@ -1,7 +1,6 @@
 package cache
 
 import (
-	"context"
 	"testing"
 	"time"
 
@@ -24,7 +23,7 @@ func TestRegistrationCache(t *testing.T) {
 		Timestamp:    uint64(time.Now().Unix()),
 		Pubkey:       pubkey,
 	}
-	cache.UpdateIndexToRegisteredMap(context.Background(), m)
+	cache.UpdateIndexToRegisteredMap(t.Context(), m)
 	reg, err := cache.RegistrationByIndex(validatorIndex)
 	require.NoError(t, err)
 	require.Equal(t, string(reg.Pubkey), string(pubkey))
@@ -38,7 +37,7 @@ func TestRegistrationCache(t *testing.T) {
 			Timestamp:    uint64(time.Now().Unix()),
 			Pubkey:       pubkey,
 		}
-		cache.UpdateIndexToRegisteredMap(context.Background(), m)
+		cache.UpdateIndexToRegisteredMap(t.Context(), m)
 		reg, err := cache.RegistrationByIndex(validatorIndex2)
 		require.NoError(t, err)
 		require.Equal(t, string(reg.Pubkey), string(pubkey))

beacon-chain/cache/skip_slot_cache_test.go

@@ -1,7 +1,6 @@
 package cache_test
 
 import (
-	"context"
 	"sync"
 	"testing"
 
@@ -14,7 +13,7 @@ import (
 )
 
 func TestSkipSlotCache_RoundTrip(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	c := cache.NewSkipSlotCache()
 
 	r := [32]byte{'a'}
@@ -38,7 +37,7 @@ func TestSkipSlotCache_RoundTrip(t *testing.T) {
 }
 
 func TestSkipSlotCache_DisabledAndEnabled(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	c := cache.NewSkipSlotCache()
 
 	r := [32]byte{'a'}

beacon-chain/cache/sync_committee.go

@@ -178,7 +178,7 @@ func (s *SyncCommitteeCache) UpdatePositionsInCommittee(syncCommitteeBoundaryRoo
 	s.lock.Lock()
 	defer s.lock.Unlock()
 	if clearCount != s.cleared.Load() {
-		log.Warn("cache rotated during async committee update operation - abandoning cache update")
+		log.Warn("Cache rotated during async committee update operation - abandoning cache update")
 		return nil
 	}
 

beacon-chain/core/altair/BUILD.bazel

@@ -81,6 +81,7 @@ go_test(
         "//proto/prysm/v1alpha1/attestation:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
+        "//testing/fuzz:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
         "//time:go_default_library",

beacon-chain/core/altair/attestation_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"fmt"
 	"testing"
 
@@ -19,9 +18,10 @@ import (
 	"github.com/OffchainLabs/prysm/v6/math"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1/attestation"
+	"github.com/OffchainLabs/prysm/v6/testing/fuzz"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
 	"github.com/OffchainLabs/prysm/v6/testing/util"
-	fuzz "github.com/google/gofuzz"
+	gofuzz "github.com/google/gofuzz"
 	"github.com/prysmaticlabs/go-bitfield"
 )
 
@@ -50,7 +50,7 @@ func TestProcessAttestations_InclusionDelayFailure(t *testing.T) {
 	)
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 }
 
@@ -81,7 +81,7 @@ func TestProcessAttestations_NeitherCurrentNorPrevEpoch(t *testing.T) {
 	)
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 }
 
@@ -110,13 +110,13 @@ func TestProcessAttestations_CurrentEpochFFGDataMismatches(t *testing.T) {
 	want := "source check point not equal to current justified checkpoint"
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 	b.Block.Body.Attestations[0].Data.Source.Epoch = time.CurrentEpoch(beaconState)
 	b.Block.Body.Attestations[0].Data.Source.Root = []byte{}
 	wsb, err = blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 }
 
@@ -151,14 +151,14 @@ func TestProcessAttestations_PrevEpochFFGDataMismatches(t *testing.T) {
 	want := "source check point not equal to previous justified checkpoint"
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 	b.Block.Body.Attestations[0].Data.Source.Epoch = time.PrevEpoch(beaconState)
 	b.Block.Body.Attestations[0].Data.Target.Epoch = time.PrevEpoch(beaconState)
 	b.Block.Body.Attestations[0].Data.Source.Root = []byte{}
 	wsb, err = blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, want, err)
 }
 
@@ -190,7 +190,7 @@ func TestProcessAttestations_InvalidAggregationBitsLength(t *testing.T) {
 	expected := "failed to verify aggregation bitfield: wanted participants bitfield length 3, got: 4"
 	wsb, err := blocks.NewSignedBeaconBlock(b)
 	require.NoError(t, err)
-	_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+	_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 	require.ErrorContains(t, expected, err)
 }
 
@@ -214,7 +214,7 @@ func TestProcessAttestations_OK(t *testing.T) {
 		cfc.Root = mockRoot[:]
 		require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(cfc))
 
-		committee, err := helpers.BeaconCommitteeFromState(context.Background(), beaconState, att.Data.Slot, 0)
+		committee, err := helpers.BeaconCommitteeFromState(t.Context(), beaconState, att.Data.Slot, 0)
 		require.NoError(t, err)
 		attestingIndices, err := attestation.AttestingIndices(att, committee)
 		require.NoError(t, err)
@@ -235,7 +235,7 @@ func TestProcessAttestations_OK(t *testing.T) {
 		require.NoError(t, err)
 		wsb, err := blocks.NewSignedBeaconBlock(block)
 		require.NoError(t, err)
-		_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+		_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 		require.NoError(t, err)
 	})
 	t.Run("post-Electra", func(t *testing.T) {
@@ -260,7 +260,7 @@ func TestProcessAttestations_OK(t *testing.T) {
 		cfc.Root = mockRoot[:]
 		require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(cfc))
 
-		committee, err := helpers.BeaconCommitteeFromState(context.Background(), beaconState, att.Data.Slot, 0)
+		committee, err := helpers.BeaconCommitteeFromState(t.Context(), beaconState, att.Data.Slot, 0)
 		require.NoError(t, err)
 		attestingIndices, err := attestation.AttestingIndices(att, committee)
 		require.NoError(t, err)
@@ -281,7 +281,7 @@ func TestProcessAttestations_OK(t *testing.T) {
 		require.NoError(t, err)
 		wsb, err := blocks.NewSignedBeaconBlock(block)
 		require.NoError(t, err)
-		_, err = altair.ProcessAttestationsNoVerifySignature(context.Background(), beaconState, wsb.Block())
+		_, err = altair.ProcessAttestationsNoVerifySignature(t.Context(), beaconState, wsb.Block())
 		require.NoError(t, err)
 	})
 }
@@ -313,13 +313,13 @@ func TestProcessAttestationNoVerify_SourceTargetHead(t *testing.T) {
 
 	b, err := helpers.TotalActiveBalance(beaconState)
 	require.NoError(t, err)
-	beaconState, err = altair.ProcessAttestationNoVerifySignature(context.Background(), beaconState, att, b)
+	beaconState, err = altair.ProcessAttestationNoVerifySignature(t.Context(), beaconState, att, b)
 	require.NoError(t, err)
 
 	p, err := beaconState.CurrentEpochParticipation()
 	require.NoError(t, err)
 
-	committee, err := helpers.BeaconCommitteeFromState(context.Background(), beaconState, att.Data.Slot, att.Data.CommitteeIndex)
+	committee, err := helpers.BeaconCommitteeFromState(t.Context(), beaconState, att.Data.Slot, att.Data.CommitteeIndex)
 	require.NoError(t, err)
 	indices, err := attestation.AttestingIndices(att, committee)
 	require.NoError(t, err)
@@ -458,7 +458,7 @@ func TestValidatorFlag_Add_ExceedsLength(t *testing.T) {
 }
 
 func TestFuzzProcessAttestationsNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	st := &ethpb.BeaconStateAltair{}
 	b := &ethpb.SignedBeaconBlockAltair{Block: &ethpb.BeaconBlockAltair{}}
 	for i := 0; i < 10000; i++ {
@@ -474,10 +474,11 @@ func TestFuzzProcessAttestationsNoVerify_10000(t *testing.T) {
 		}
 		wsb, err := blocks.NewSignedBeaconBlock(b)
 		require.NoError(t, err)
-		r, err := altair.ProcessAttestationsNoVerifySignature(context.Background(), s, wsb.Block())
+		r, err := altair.ProcessAttestationsNoVerifySignature(t.Context(), s, wsb.Block())
 		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, s, b)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
@@ -555,10 +556,10 @@ func TestSetParticipationAndRewardProposer(t *testing.T) {
 
 			b, err := helpers.TotalActiveBalance(beaconState)
 			require.NoError(t, err)
-			st, err := altair.SetParticipationAndRewardProposer(context.Background(), beaconState, test.epoch, test.indices, test.participatedFlags, b)
+			st, err := altair.SetParticipationAndRewardProposer(t.Context(), beaconState, test.epoch, test.indices, test.participatedFlags, b)
 			require.NoError(t, err)
 
-			i, err := helpers.BeaconProposerIndex(context.Background(), st)
+			i, err := helpers.BeaconProposerIndex(t.Context(), st)
 			require.NoError(t, err)
 			b, err = beaconState.BalanceAtIndex(i)
 			require.NoError(t, err)
@@ -661,8 +662,8 @@ func TestRewardProposer(t *testing.T) {
 		{rewardNumerator: 1000000000000, want: 34234377253},
 	}
 	for _, test := range tests {
-		require.NoError(t, altair.RewardProposer(context.Background(), beaconState, test.rewardNumerator))
-		i, err := helpers.BeaconProposerIndex(context.Background(), beaconState)
+		require.NoError(t, altair.RewardProposer(t.Context(), beaconState, test.rewardNumerator))
+		i, err := helpers.BeaconProposerIndex(t.Context(), beaconState)
 		require.NoError(t, err)
 		b, err := beaconState.BalanceAtIndex(i)
 		require.NoError(t, err)

beacon-chain/core/altair/block_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"math"
 	"testing"
 
@@ -26,7 +25,7 @@ import (
 func TestProcessSyncCommittee_PerfectParticipation(t *testing.T) {
 	beaconState, privKeys := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.NoError(t, beaconState.SetCurrentSyncCommittee(committee))
 
@@ -34,7 +33,7 @@ func TestProcessSyncCommittee_PerfectParticipation(t *testing.T) {
 	for i := range syncBits {
 		syncBits[i] = 0xff
 	}
-	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
+	indices, err := altair.NextSyncCommitteeIndices(t.Context(), beaconState)
 	require.NoError(t, err)
 	ps := slots.PrevSlot(beaconState.Slot())
 	pbr, err := helpers.BlockRootAtSlot(beaconState, ps)
@@ -55,7 +54,7 @@ func TestProcessSyncCommittee_PerfectParticipation(t *testing.T) {
 	}
 
 	var reward uint64
-	beaconState, reward, err = altair.ProcessSyncAggregate(context.Background(), beaconState, syncAggregate)
+	beaconState, reward, err = altair.ProcessSyncAggregate(t.Context(), beaconState, syncAggregate)
 	require.NoError(t, err)
 	assert.Equal(t, uint64(72192), reward)
 
@@ -77,7 +76,7 @@ func TestProcessSyncCommittee_PerfectParticipation(t *testing.T) {
 	require.Equal(t, true, balances[indices[0]] > balances[nonSyncIndex])
 
 	// Proposer should be more profitable than rest of the sync committee
-	proposerIndex, err := helpers.BeaconProposerIndex(context.Background(), beaconState)
+	proposerIndex, err := helpers.BeaconProposerIndex(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.Equal(t, true, balances[proposerIndex] > balances[indices[0]])
 
@@ -102,7 +101,7 @@ func TestProcessSyncCommittee_PerfectParticipation(t *testing.T) {
 func TestProcessSyncCommittee_MixParticipation_BadSignature(t *testing.T) {
 	beaconState, privKeys := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.NoError(t, beaconState.SetCurrentSyncCommittee(committee))
 
@@ -110,7 +109,7 @@ func TestProcessSyncCommittee_MixParticipation_BadSignature(t *testing.T) {
 	for i := range syncBits {
 		syncBits[i] = 0xAA
 	}
-	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
+	indices, err := altair.NextSyncCommitteeIndices(t.Context(), beaconState)
 	require.NoError(t, err)
 	ps := slots.PrevSlot(beaconState.Slot())
 	pbr, err := helpers.BlockRootAtSlot(beaconState, ps)
@@ -130,14 +129,14 @@ func TestProcessSyncCommittee_MixParticipation_BadSignature(t *testing.T) {
 		SyncCommitteeSignature: aggregatedSig,
 	}
 
-	_, _, err = altair.ProcessSyncAggregate(context.Background(), beaconState, syncAggregate)
+	_, _, err = altair.ProcessSyncAggregate(t.Context(), beaconState, syncAggregate)
 	require.ErrorContains(t, "invalid sync committee signature", err)
 }
 
 func TestProcessSyncCommittee_MixParticipation_GoodSignature(t *testing.T) {
 	beaconState, privKeys := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.NoError(t, beaconState.SetCurrentSyncCommittee(committee))
 
@@ -145,7 +144,7 @@ func TestProcessSyncCommittee_MixParticipation_GoodSignature(t *testing.T) {
 	for i := range syncBits {
 		syncBits[i] = 0xAA
 	}
-	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
+	indices, err := altair.NextSyncCommitteeIndices(t.Context(), beaconState)
 	require.NoError(t, err)
 	ps := slots.PrevSlot(beaconState.Slot())
 	pbr, err := helpers.BlockRootAtSlot(beaconState, ps)
@@ -167,7 +166,7 @@ func TestProcessSyncCommittee_MixParticipation_GoodSignature(t *testing.T) {
 		SyncCommitteeSignature: aggregatedSig,
 	}
 
-	_, _, err = altair.ProcessSyncAggregate(context.Background(), beaconState, syncAggregate)
+	_, _, err = altair.ProcessSyncAggregate(t.Context(), beaconState, syncAggregate)
 	require.NoError(t, err)
 }
 
@@ -175,7 +174,7 @@ func TestProcessSyncCommittee_MixParticipation_GoodSignature(t *testing.T) {
 func TestProcessSyncCommittee_DontPrecompute(t *testing.T) {
 	beaconState, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	committeeKeys := committee.Pubkeys
 	committeeKeys[1] = committeeKeys[0]
@@ -192,7 +191,7 @@ func TestProcessSyncCommittee_DontPrecompute(t *testing.T) {
 		SyncCommitteeBits: syncBits,
 	}
 	require.NoError(t, beaconState.UpdateBalancesAtIndex(idx, 0))
-	st, votedKeys, _, err := altair.ProcessSyncAggregateEported(context.Background(), beaconState, syncAggregate)
+	st, votedKeys, _, err := altair.ProcessSyncAggregateEported(t.Context(), beaconState, syncAggregate)
 	require.NoError(t, err)
 	require.Equal(t, 511, len(votedKeys))
 	require.DeepEqual(t, committeeKeys[0], votedKeys[0].Marshal())
@@ -203,7 +202,7 @@ func TestProcessSyncCommittee_DontPrecompute(t *testing.T) {
 func TestProcessSyncCommittee_processSyncAggregate(t *testing.T) {
 	beaconState, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.NoError(t, beaconState.SetCurrentSyncCommittee(committee))
 
@@ -215,7 +214,7 @@ func TestProcessSyncCommittee_processSyncAggregate(t *testing.T) {
 		SyncCommitteeBits: syncBits,
 	}
 
-	st, votedKeys, _, err := altair.ProcessSyncAggregateEported(context.Background(), beaconState, syncAggregate)
+	st, votedKeys, _, err := altair.ProcessSyncAggregateEported(t.Context(), beaconState, syncAggregate)
 	require.NoError(t, err)
 	votedMap := make(map[[fieldparams.BLSPubkeyLength]byte]bool)
 	for _, key := range votedKeys {
@@ -228,7 +227,7 @@ func TestProcessSyncCommittee_processSyncAggregate(t *testing.T) {
 	committeeKeys := currentSyncCommittee.Pubkeys
 	balances := st.Balances()
 
-	proposerIndex, err := helpers.BeaconProposerIndex(context.Background(), beaconState)
+	proposerIndex, err := helpers.BeaconProposerIndex(t.Context(), beaconState)
 	require.NoError(t, err)
 
 	for i := 0; i < len(syncBits); i++ {
@@ -254,7 +253,7 @@ func TestProcessSyncCommittee_processSyncAggregate(t *testing.T) {
 func Test_VerifySyncCommitteeSig(t *testing.T) {
 	beaconState, privKeys := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, beaconState.SetSlot(1))
-	committee, err := altair.NextSyncCommittee(context.Background(), beaconState)
+	committee, err := altair.NextSyncCommittee(t.Context(), beaconState)
 	require.NoError(t, err)
 	require.NoError(t, beaconState.SetCurrentSyncCommittee(committee))
 
@@ -262,7 +261,7 @@ func Test_VerifySyncCommitteeSig(t *testing.T) {
 	for i := range syncBits {
 		syncBits[i] = 0xff
 	}
-	indices, err := altair.NextSyncCommitteeIndices(context.Background(), beaconState)
+	indices, err := altair.NextSyncCommitteeIndices(t.Context(), beaconState)
 	require.NoError(t, err)
 	ps := slots.PrevSlot(beaconState.Slot())
 	pbr, err := helpers.BlockRootAtSlot(beaconState, ps)

beacon-chain/core/altair/deposit_fuzz_test.go

@@ -1,21 +1,21 @@
 package altair_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/altair"
 	state_native "github.com/OffchainLabs/prysm/v6/beacon-chain/state/state-native"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
+	"github.com/OffchainLabs/prysm/v6/testing/fuzz"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
-	fuzz "github.com/google/gofuzz"
+	gofuzz "github.com/google/gofuzz"
 )
 
 func TestFuzzProcessDeposits_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconStateAltair{}
 	deposits := make([]*ethpb.Deposit, 100)
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		for i := range deposits {
@@ -27,14 +27,15 @@ func TestFuzzProcessDeposits_10000(t *testing.T) {
 		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)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessPreGenesisDeposit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconStateAltair{}
 	deposit := &ethpb.Deposit{}
-	ctx := context.Background()
+	ctx := t.Context()
 
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
@@ -45,14 +46,15 @@ func TestFuzzProcessPreGenesisDeposit_10000(t *testing.T) {
 		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)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessPreGenesisDeposit_Phase0_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	deposit := &ethpb.Deposit{}
-	ctx := context.Background()
+	ctx := t.Context()
 
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
@@ -63,11 +65,12 @@ func TestFuzzProcessPreGenesisDeposit_Phase0_10000(t *testing.T) {
 		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)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessDeposit_Phase0_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	deposit := &ethpb.Deposit{}
 
@@ -80,11 +83,12 @@ func TestFuzzProcessDeposit_Phase0_10000(t *testing.T) {
 		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)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessDeposit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconStateAltair{}
 	deposit := &ethpb.Deposit{}
 
@@ -97,5 +101,6 @@ func TestFuzzProcessDeposit_10000(t *testing.T) {
 		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)
 		}
+		fuzz.FreeMemory(i)
 	}
 }

beacon-chain/core/altair/deposit_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/altair"
@@ -42,7 +41,7 @@ func TestProcessDeposits_SameValidatorMultipleDepositsSameBlock(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	newState, err := altair.ProcessDeposits(context.Background(), beaconState, []*ethpb.Deposit{dep[0], dep[1], dep[2]})
+	newState, err := altair.ProcessDeposits(t.Context(), beaconState, []*ethpb.Deposit{dep[0], dep[1], dep[2]})
 	require.NoError(t, err, "Expected block deposits to process correctly")
 	require.Equal(t, 2, len(newState.Validators()), "Incorrect validator count")
 }
@@ -70,7 +69,7 @@ func TestProcessDeposits_AddsNewValidatorDeposit(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	newState, err := altair.ProcessDeposits(context.Background(), beaconState, []*ethpb.Deposit{dep[0]})
+	newState, err := altair.ProcessDeposits(t.Context(), beaconState, []*ethpb.Deposit{dep[0]})
 	require.NoError(t, err, "Expected block deposits to process correctly")
 	if newState.Balances()[1] != dep[0].Data.Amount {
 		t.Errorf(
@@ -127,7 +126,7 @@ func TestProcessDeposits_RepeatedDeposit_IncreasesValidatorBalance(t *testing.T)
 		},
 	})
 	require.NoError(t, err)
-	newState, err := altair.ProcessDeposits(context.Background(), beaconState, []*ethpb.Deposit{deposit})
+	newState, err := altair.ProcessDeposits(t.Context(), beaconState, []*ethpb.Deposit{deposit})
 	require.NoError(t, err, "Process deposit failed")
 	require.Equal(t, uint64(1000+50), newState.Balances()[1], "Expected balance at index 1 to be 1050")
 }
@@ -256,7 +255,7 @@ func TestPreGenesisDeposits_SkipInvalidDeposit(t *testing.T) {
 		},
 	})
 	require.NoError(t, err)
-	newState, err := altair.ProcessPreGenesisDeposits(context.Background(), beaconState, dep)
+	newState, err := altair.ProcessPreGenesisDeposits(t.Context(), beaconState, dep)
 	require.NoError(t, err, "Expected invalid block deposit to be ignored without error")
 
 	_, ok := newState.ValidatorIndexByPubkey(bytesutil.ToBytes48(dep[0].Data.PublicKey))
@@ -370,6 +369,6 @@ func TestProcessDeposits_MerkleBranchFailsVerification(t *testing.T) {
 	})
 	require.NoError(t, err)
 	want := "deposit root did not verify"
-	_, err = altair.ProcessDeposits(context.Background(), beaconState, b.Block.Body.Deposits)
+	_, err = altair.ProcessDeposits(t.Context(), beaconState, b.Block.Body.Deposits)
 	assert.ErrorContains(t, want, err)
 }

beacon-chain/core/altair/epoch_precompute_test.go

@@ -1,7 +1,6 @@
 package altair
 
 import (
-	"context"
 	"math"
 	"testing"
 
@@ -32,7 +31,7 @@ func TestInitializeEpochValidators_Ok(t *testing.T) {
 		InactivityScores: []uint64{0, 1, 2, 3},
 	})
 	require.NoError(t, err)
-	v, b, err := InitializePrecomputeValidators(context.Background(), s)
+	v, b, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
 	assert.DeepEqual(t, &precompute.Validator{
 		IsSlashed:                    true,
@@ -74,7 +73,7 @@ func TestInitializeEpochValidators_Overflow(t *testing.T) {
 		InactivityScores: []uint64{0, 1},
 	})
 	require.NoError(t, err)
-	_, _, err = InitializePrecomputeValidators(context.Background(), s)
+	_, _, err = InitializePrecomputeValidators(t.Context(), s)
 	require.ErrorContains(t, "could not read every validator: addition overflows", err)
 }
 
@@ -84,16 +83,16 @@ func TestInitializeEpochValidators_BadState(t *testing.T) {
 		InactivityScores: []uint64{},
 	})
 	require.NoError(t, err)
-	_, _, err = InitializePrecomputeValidators(context.Background(), s)
+	_, _, err = InitializePrecomputeValidators(t.Context(), s)
 	require.ErrorContains(t, "num of validators is different than num of inactivity scores", err)
 }
 
 func TestProcessEpochParticipation(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	require.DeepEqual(t, &precompute.Validator{
 		IsActiveCurrentEpoch:         true,
@@ -169,9 +168,9 @@ func TestProcessEpochParticipation_InactiveValidator(t *testing.T) {
 		InactivityScores: []uint64{0, 0, 0},
 	})
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), st)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), st)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), st, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), st, balance, validators)
 	require.NoError(t, err)
 	require.DeepEqual(t, &precompute.Validator{
 		IsActiveCurrentEpoch:         false,
@@ -209,9 +208,9 @@ func TestProcessEpochParticipation_InactiveValidator(t *testing.T) {
 func TestAttestationsDelta(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	deltas, err := AttestationsDelta(s, balance, validators)
 	require.NoError(t, err)
@@ -247,9 +246,9 @@ func TestAttestationsDelta(t *testing.T) {
 func TestAttestationsDeltaBellatrix(t *testing.T) {
 	s, err := testStateBellatrix()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	deltas, err := AttestationsDelta(s, balance, validators)
 	require.NoError(t, err)
@@ -285,9 +284,9 @@ func TestAttestationsDeltaBellatrix(t *testing.T) {
 func TestProcessRewardsAndPenaltiesPrecompute_Ok(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	s, err = ProcessRewardsAndPenaltiesPrecompute(s, balance, validators)
 	require.NoError(t, err)
@@ -324,9 +323,9 @@ func TestProcessRewardsAndPenaltiesPrecompute_Ok(t *testing.T) {
 func TestProcessRewardsAndPenaltiesPrecompute_InactivityLeak(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	sCopy := s.Copy()
 	s, err = ProcessRewardsAndPenaltiesPrecompute(s, balance, validators)
@@ -352,11 +351,11 @@ func TestProcessInactivityScores_CanProcessInactivityLeak(t *testing.T) {
 	defaultScore := uint64(5)
 	require.NoError(t, s.SetInactivityScores([]uint64{defaultScore, defaultScore, defaultScore, defaultScore}))
 	require.NoError(t, s.SetSlot(params.BeaconConfig().SlotsPerEpoch*primitives.Slot(params.BeaconConfig().MinEpochsToInactivityPenalty+2)))
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, _, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, _, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
-	s, _, err = ProcessInactivityScores(context.Background(), s, validators)
+	s, _, err = ProcessInactivityScores(t.Context(), s, validators)
 	require.NoError(t, err)
 	inactivityScores, err := s.InactivityScores()
 	require.NoError(t, err)
@@ -373,11 +372,11 @@ func TestProcessInactivityScores_GenesisEpoch(t *testing.T) {
 	defaultScore := uint64(10)
 	require.NoError(t, s.SetInactivityScores([]uint64{defaultScore, defaultScore, defaultScore, defaultScore}))
 	require.NoError(t, s.SetSlot(params.BeaconConfig().GenesisSlot))
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, _, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, _, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
-	s, _, err = ProcessInactivityScores(context.Background(), s, validators)
+	s, _, err = ProcessInactivityScores(t.Context(), s, validators)
 	require.NoError(t, err)
 	inactivityScores, err := s.InactivityScores()
 	require.NoError(t, err)
@@ -392,11 +391,11 @@ func TestProcessInactivityScores_CanProcessNonInactivityLeak(t *testing.T) {
 	require.NoError(t, err)
 	defaultScore := uint64(5)
 	require.NoError(t, s.SetInactivityScores([]uint64{defaultScore, defaultScore, defaultScore, defaultScore}))
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, _, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, _, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
-	s, _, err = ProcessInactivityScores(context.Background(), s, validators)
+	s, _, err = ProcessInactivityScores(t.Context(), s, validators)
 	require.NoError(t, err)
 	inactivityScores, err := s.InactivityScores()
 	require.NoError(t, err)
@@ -410,9 +409,9 @@ func TestProcessInactivityScores_CanProcessNonInactivityLeak(t *testing.T) {
 func TestProcessRewardsAndPenaltiesPrecompute_GenesisEpoch(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	validators, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	require.NoError(t, s.SetSlot(0))
 	s, err = ProcessRewardsAndPenaltiesPrecompute(s, balance, validators)
@@ -429,9 +428,9 @@ func TestProcessRewardsAndPenaltiesPrecompute_GenesisEpoch(t *testing.T) {
 func TestProcessRewardsAndPenaltiesPrecompute_BadState(t *testing.T) {
 	s, err := testState()
 	require.NoError(t, err)
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
-	_, balance, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	_, balance, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
 	_, err = ProcessRewardsAndPenaltiesPrecompute(s, balance, []*precompute.Validator{})
 	require.ErrorContains(t, "validator registries not the same length as state's validator registries", err)
@@ -442,7 +441,7 @@ func TestProcessInactivityScores_NonEligibleValidator(t *testing.T) {
 	require.NoError(t, err)
 	defaultScore := uint64(5)
 	require.NoError(t, s.SetInactivityScores([]uint64{defaultScore, defaultScore, defaultScore, defaultScore}))
-	validators, balance, err := InitializePrecomputeValidators(context.Background(), s)
+	validators, balance, err := InitializePrecomputeValidators(t.Context(), s)
 	require.NoError(t, err)
 
 	// v0 is eligible (not active previous epoch, slashed and not withdrawable)
@@ -463,9 +462,9 @@ func TestProcessInactivityScores_NonEligibleValidator(t *testing.T) {
 	// v3 is eligible (active previous epoch)
 	validators[3].IsActivePrevEpoch = true
 
-	validators, _, err = ProcessEpochParticipation(context.Background(), s, balance, validators)
+	validators, _, err = ProcessEpochParticipation(t.Context(), s, balance, validators)
 	require.NoError(t, err)
-	s, _, err = ProcessInactivityScores(context.Background(), s, validators)
+	s, _, err = ProcessInactivityScores(t.Context(), s, validators)
 	require.NoError(t, err)
 	inactivityScores, err := s.InactivityScores()
 	require.NoError(t, err)

beacon-chain/core/altair/epoch_spec_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"fmt"
 	"math"
 	"testing"
@@ -29,7 +28,7 @@ func TestProcessSyncCommitteeUpdates_CanRotate(t *testing.T) {
 		BodyRoot:   bytesutil.PadTo([]byte{'c'}, 32),
 	}
 	require.NoError(t, s.SetLatestBlockHeader(h))
-	postState, err := altair.ProcessSyncCommitteeUpdates(context.Background(), s)
+	postState, err := altair.ProcessSyncCommitteeUpdates(t.Context(), s)
 	require.NoError(t, err)
 	current, err := postState.CurrentSyncCommittee()
 	require.NoError(t, err)
@@ -38,7 +37,7 @@ func TestProcessSyncCommitteeUpdates_CanRotate(t *testing.T) {
 	require.DeepEqual(t, current, next)
 
 	require.NoError(t, s.SetSlot(params.BeaconConfig().SlotsPerEpoch))
-	postState, err = altair.ProcessSyncCommitteeUpdates(context.Background(), s)
+	postState, err = altair.ProcessSyncCommitteeUpdates(t.Context(), s)
 	require.NoError(t, err)
 	c, err := postState.CurrentSyncCommittee()
 	require.NoError(t, err)
@@ -48,7 +47,7 @@ func TestProcessSyncCommitteeUpdates_CanRotate(t *testing.T) {
 	require.DeepEqual(t, next, n)
 
 	require.NoError(t, s.SetSlot(primitives.Slot(params.BeaconConfig().EpochsPerSyncCommitteePeriod)*params.BeaconConfig().SlotsPerEpoch-1))
-	postState, err = altair.ProcessSyncCommitteeUpdates(context.Background(), s)
+	postState, err = altair.ProcessSyncCommitteeUpdates(t.Context(), s)
 	require.NoError(t, err)
 	c, err = postState.CurrentSyncCommittee()
 	require.NoError(t, err)
@@ -61,7 +60,7 @@ func TestProcessSyncCommitteeUpdates_CanRotate(t *testing.T) {
 	// Test boundary condition.
 	slot := params.BeaconConfig().SlotsPerEpoch * primitives.Slot(time.CurrentEpoch(s)+params.BeaconConfig().EpochsPerSyncCommitteePeriod)
 	require.NoError(t, s.SetSlot(slot))
-	boundaryCommittee, err := altair.NextSyncCommittee(context.Background(), s)
+	boundaryCommittee, err := altair.NextSyncCommittee(t.Context(), s)
 	require.NoError(t, err)
 	require.DeepNotEqual(t, boundaryCommittee, n)
 }

beacon-chain/core/altair/reward_test.go

@@ -31,7 +31,7 @@ func Test_BaseReward(t *testing.T) {
 			valIdx:    2,
 			st:        genState(1),
 			want:      0,
-			errString: "validator index 2 does not exist",
+			errString: "index 2 out of bounds",
 		},
 		{
 			name:      "active balance is 32eth",
@@ -89,7 +89,7 @@ func Test_BaseRewardWithTotalBalance(t *testing.T) {
 			valIdx:        2,
 			activeBalance: 1,
 			want:          0,
-			errString:     "validator index 2 does not exist",
+			errString:     "index 2 out of bounds",
 		},
 		{
 			name:          "active balance is 1",

beacon-chain/core/altair/sync_committee.go

@@ -217,15 +217,15 @@ func IsSyncCommitteeAggregator(sig []byte) (bool, error) {
 // ValidateSyncMessageTime validates sync message to ensure that the provided slot is valid.
 // Spec: [IGNORE] The message's slot is for the current slot (with a MAXIMUM_GOSSIP_CLOCK_DISPARITY allowance), i.e. sync_committee_message.slot == current_slot
 func ValidateSyncMessageTime(slot primitives.Slot, genesisTime time.Time, clockDisparity time.Duration) error {
-	if err := slots.ValidateClock(slot, uint64(genesisTime.Unix())); err != nil {
+	if err := slots.ValidateClock(slot, genesisTime); err != nil {
 		return err
 	}
-	messageTime, err := slots.ToTime(uint64(genesisTime.Unix()), slot)
+	messageTime, err := slots.StartTime(genesisTime, slot)
 	if err != nil {
 		return err
 	}
-	currentSlot := slots.Since(genesisTime)
-	slotStartTime, err := slots.ToTime(uint64(genesisTime.Unix()), currentSlot)
+	currentSlot := slots.CurrentSlot(genesisTime)
+	slotStartTime, err := slots.StartTime(genesisTime, currentSlot)
 	if err != nil {
 		return err
 	}

beacon-chain/core/altair/sync_committee_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"testing"
 	"time"
 
@@ -97,7 +96,7 @@ func TestSyncCommitteeIndices_CanGet(t *testing.T) {
 				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)
+					got, err := altair.NextSyncCommitteeIndices(t.Context(), st)
 					if tt.wantErr {
 						require.ErrorContains(t, tt.errString, err)
 					} else {
@@ -129,18 +128,18 @@ func TestSyncCommitteeIndices_DifferentPeriods(t *testing.T) {
 	}
 
 	st := getState(t, params.BeaconConfig().MaxValidatorsPerCommittee)
-	got1, err := altair.NextSyncCommitteeIndices(context.Background(), st)
+	got1, err := altair.NextSyncCommitteeIndices(t.Context(), st)
 	require.NoError(t, err)
 	require.NoError(t, st.SetSlot(params.BeaconConfig().SlotsPerEpoch))
-	got2, err := altair.NextSyncCommitteeIndices(context.Background(), st)
+	got2, err := altair.NextSyncCommitteeIndices(t.Context(), st)
 	require.NoError(t, err)
 	require.DeepNotEqual(t, got1, got2)
 	require.NoError(t, st.SetSlot(params.BeaconConfig().SlotsPerEpoch*primitives.Slot(params.BeaconConfig().EpochsPerSyncCommitteePeriod)))
-	got2, err = altair.NextSyncCommitteeIndices(context.Background(), st)
+	got2, err = altair.NextSyncCommitteeIndices(t.Context(), st)
 	require.NoError(t, err)
 	require.DeepNotEqual(t, got1, got2)
 	require.NoError(t, st.SetSlot(params.BeaconConfig().SlotsPerEpoch*primitives.Slot(2*params.BeaconConfig().EpochsPerSyncCommitteePeriod)))
-	got2, err = altair.NextSyncCommitteeIndices(context.Background(), st)
+	got2, err = altair.NextSyncCommitteeIndices(t.Context(), st)
 	require.NoError(t, err)
 	require.DeepNotEqual(t, got1, got2)
 }
@@ -206,7 +205,7 @@ func TestSyncCommittee_CanGet(t *testing.T) {
 			if !tt.wantErr {
 				require.NoError(t, tt.args.state.SetSlot(primitives.Slot(tt.args.epoch)*params.BeaconConfig().SlotsPerEpoch))
 			}
-			got, err := altair.NextSyncCommittee(context.Background(), tt.args.state)
+			got, err := altair.NextSyncCommittee(t.Context(), tt.args.state)
 			if tt.wantErr {
 				require.ErrorContains(t, tt.errString, err)
 			} else {
@@ -270,7 +269,7 @@ func TestValidateNilSyncContribution(t *testing.T) {
 func TestSyncSubCommitteePubkeys_CanGet(t *testing.T) {
 	helpers.ClearCache()
 	st := getState(t, params.BeaconConfig().MaxValidatorsPerCommittee)
-	com, err := altair.NextSyncCommittee(context.Background(), st)
+	com, err := altair.NextSyncCommittee(t.Context(), st)
 	require.NoError(t, err)
 	sub, err := altair.SyncSubCommitteePubkeys(com, 0)
 	require.NoError(t, err)

beacon-chain/core/altair/transition_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/altair"
@@ -13,7 +12,7 @@ import (
 func TestProcessEpoch_CanProcess(t *testing.T) {
 	st, _ := util.DeterministicGenesisStateAltair(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, st.SetSlot(10*params.BeaconConfig().SlotsPerEpoch))
-	err := altair.ProcessEpoch(context.Background(), st)
+	err := altair.ProcessEpoch(t.Context(), st)
 	require.NoError(t, err)
 	require.Equal(t, uint64(0), st.Slashings()[2], "Unexpected slashed balance")
 
@@ -45,7 +44,7 @@ func TestProcessEpoch_CanProcess(t *testing.T) {
 func TestProcessEpoch_CanProcessBellatrix(t *testing.T) {
 	st, _ := util.DeterministicGenesisStateBellatrix(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	require.NoError(t, st.SetSlot(10*params.BeaconConfig().SlotsPerEpoch))
-	err := altair.ProcessEpoch(context.Background(), st)
+	err := altair.ProcessEpoch(t.Context(), st)
 	require.NoError(t, err)
 	require.Equal(t, uint64(0), st.Slashings()[2], "Unexpected slashed balance")
 

beacon-chain/core/altair/upgrade.go

@@ -68,7 +68,7 @@ func UpgradeToAltair(ctx context.Context, state state.BeaconState) (state.Beacon
 
 	numValidators := state.NumValidators()
 	s := &ethpb.BeaconStateAltair{
-		GenesisTime:           state.GenesisTime(),
+		GenesisTime:           uint64(state.GenesisTime().Unix()),
 		GenesisValidatorsRoot: state.GenesisValidatorsRoot(),
 		Slot:                  state.Slot(),
 		Fork: &ethpb.Fork{

beacon-chain/core/altair/upgrade_test.go

@@ -1,7 +1,6 @@
 package altair_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/altair"
@@ -17,7 +16,7 @@ import (
 )
 
 func TestTranslateParticipation(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	s, _ := util.DeterministicGenesisStateAltair(t, 64)
 	require.NoError(t, s.SetSlot(s.Slot()+params.BeaconConfig().MinAttestationInclusionDelay))
 
@@ -73,7 +72,7 @@ func TestTranslateParticipation(t *testing.T) {
 func TestUpgradeToAltair(t *testing.T) {
 	st, _ := util.DeterministicGenesisState(t, params.BeaconConfig().MaxValidatorsPerCommittee)
 	preForkState := st.Copy()
-	aState, err := altair.UpgradeToAltair(context.Background(), st)
+	aState, err := altair.UpgradeToAltair(t.Context(), st)
 	require.NoError(t, err)
 
 	require.Equal(t, preForkState.GenesisTime(), aState.GenesisTime())

beacon-chain/core/blocks/BUILD.bazel

@@ -105,6 +105,7 @@ go_test(
         "//proto/prysm/v1alpha1/attestation/aggregation/attestations:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
+        "//testing/fuzz:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
         "//time/slots:go_default_library",

beacon-chain/core/blocks/attestation.go

@@ -178,7 +178,7 @@ func VerifyAttestationNoVerifySignature(
 		}
 	}
 
-	return attestation.IsValidAttestationIndices(ctx, indexedAtt)
+	return attestation.IsValidAttestationIndices(ctx, indexedAtt, params.BeaconConfig().MaxValidatorsPerCommittee, params.BeaconConfig().MaxCommitteesPerSlot)
 }
 
 // ProcessAttestationNoVerifySignature processes the attestation without verifying the attestation signature. This
@@ -243,7 +243,7 @@ func VerifyIndexedAttestation(ctx context.Context, beaconState state.ReadOnlyBea
 	ctx, span := trace.StartSpan(ctx, "core.VerifyIndexedAttestation")
 	defer span.End()
 
-	if err := attestation.IsValidAttestationIndices(ctx, indexedAtt); err != nil {
+	if err := attestation.IsValidAttestationIndices(ctx, indexedAtt, params.BeaconConfig().MaxValidatorsPerCommittee, params.BeaconConfig().MaxCommitteesPerSlot); err != nil {
 		return err
 	}
 	domain, err := signing.Domain(

beacon-chain/core/blocks/attestation_regression_test.go

@@ -41,7 +41,7 @@ func TestProcessAttestationNoVerifySignature_BeaconFuzzIssue78(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	ctx := context.Background()
+	ctx := t.Context()
 	_, err = blocks.ProcessAttestationNoVerifySignature(ctx, st, att)
 	require.ErrorContains(t, "committee index 1 >= committee count 1", err)
 }

beacon-chain/core/blocks/attestation_test.go

@@ -42,7 +42,7 @@ func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 	require.NoError(t, beaconState.SetCurrentJustifiedCheckpoint(cfc))
 	require.NoError(t, beaconState.AppendCurrentEpochAttestations(&ethpb.PendingAttestation{}))
 
-	committee, err := helpers.BeaconCommitteeFromState(context.Background(), beaconState, att1.Data.Slot, att1.Data.CommitteeIndex)
+	committee, err := helpers.BeaconCommitteeFromState(t.Context(), beaconState, att1.Data.Slot, att1.Data.CommitteeIndex)
 	require.NoError(t, err)
 	attestingIndices1, err := attestation.AttestingIndices(att1, committee)
 	require.NoError(t, err)
@@ -64,7 +64,7 @@ func TestProcessAggregatedAttestation_OverlappingBits(t *testing.T) {
 		AggregationBits: aggBits2,
 	}
 
-	committee, err = helpers.BeaconCommitteeFromState(context.Background(), beaconState, att2.Data.Slot, att2.Data.CommitteeIndex)
+	committee, err = helpers.BeaconCommitteeFromState(t.Context(), beaconState, att2.Data.Slot, att2.Data.CommitteeIndex)
 	require.NoError(t, err)
 	attestingIndices2, err := attestation.AttestingIndices(att2, committee)
 	require.NoError(t, err)
@@ -137,7 +137,7 @@ func TestProcessAttestationsNoVerify_OlderThanSlotsPerEpoch(t *testing.T) {
 		},
 		AggregationBits: aggBits,
 	}
-	ctx := context.Background()
+	ctx := t.Context()
 
 	t.Run("attestation older than slots per epoch", func(t *testing.T) {
 		beaconState, _ := util.DeterministicGenesisState(t, 100)
@@ -360,9 +360,9 @@ func TestConvertToIndexed_OK(t *testing.T) {
 			Signature:        att.Signature,
 		}
 
-		committee, err := helpers.BeaconCommitteeFromState(context.Background(), state, att.Data.Slot, att.Data.CommitteeIndex)
+		committee, err := helpers.BeaconCommitteeFromState(t.Context(), state, att.Data.Slot, att.Data.CommitteeIndex)
 		require.NoError(t, err)
-		ia, err := attestation.ConvertToIndexed(context.Background(), att, committee)
+		ia, err := attestation.ConvertToIndexed(t.Context(), att, committee)
 		require.NoError(t, err)
 		assert.DeepEqual(t, wanted, ia, "Convert attestation to indexed attestation didn't result as wanted")
 	}
@@ -448,7 +448,7 @@ func TestVerifyIndexedAttestation_OK(t *testing.T) {
 
 		tt.attestation.Signature = marshalledSig
 
-		err = blocks.VerifyIndexedAttestation(context.Background(), state, tt.attestation)
+		err = blocks.VerifyIndexedAttestation(t.Context(), state, tt.attestation)
 		assert.NoError(t, err, "Failed to verify indexed attestation")
 	}
 }
@@ -471,7 +471,7 @@ func TestValidateIndexedAttestation_AboveMaxLength(t *testing.T) {
 	want := "validator indices count exceeds MAX_VALIDATORS_PER_COMMITTEE"
 	st, err := state_native.InitializeFromProtoUnsafePhase0(&ethpb.BeaconState{})
 	require.NoError(t, err)
-	err = blocks.VerifyIndexedAttestation(context.Background(), st, indexedAtt1)
+	err = blocks.VerifyIndexedAttestation(t.Context(), st, indexedAtt1)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -493,7 +493,7 @@ func TestValidateIndexedAttestation_BadAttestationsSignatureSet(t *testing.T) {
 	}
 
 	want := "nil or missing indexed attestation data"
-	_, err := blocks.AttestationSignatureBatch(context.Background(), beaconState, atts)
+	_, err := blocks.AttestationSignatureBatch(t.Context(), beaconState, atts)
 	assert.ErrorContains(t, want, err)
 
 	atts = []ethpb.Att{}
@@ -514,7 +514,7 @@ func TestValidateIndexedAttestation_BadAttestationsSignatureSet(t *testing.T) {
 	}
 
 	want = "expected non-empty attesting indices"
-	_, err = blocks.AttestationSignatureBatch(context.Background(), beaconState, atts)
+	_, err = blocks.AttestationSignatureBatch(t.Context(), beaconState, atts)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -542,7 +542,7 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 		PreviousVersion: params.BeaconConfig().GenesisForkVersion,
 	}))
 
-	comm1, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1 /*slot*/, 0 /*committeeIndex*/)
+	comm1, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1 /*slot*/, 0 /*committeeIndex*/)
 	require.NoError(t, err)
 	att1 := util.HydrateAttestation(&ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm1))),
@@ -561,7 +561,7 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 	}
 	att1.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-	comm2, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1*params.BeaconConfig().SlotsPerEpoch+1 /*slot*/, 1 /*committeeIndex*/)
+	comm2, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1*params.BeaconConfig().SlotsPerEpoch+1 /*slot*/, 1 /*committeeIndex*/)
 	require.NoError(t, err)
 	att2 := util.HydrateAttestation(&ethpb.Attestation{
 		AggregationBits: bitfield.NewBitlist(uint64(len(comm2))),
@@ -583,7 +583,7 @@ func TestVerifyAttestations_HandlesPlannedFork(t *testing.T) {
 }
 
 func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	numOfValidators := uint64(params.BeaconConfig().SlotsPerEpoch.Mul(4))
 	validators := make([]*ethpb.Validator, numOfValidators)
 	_, keys, err := util.DeterministicDepositsAndKeys(numOfValidators)
@@ -602,7 +602,7 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 		require.NoError(t, st.SetSlot(5))
 		require.NoError(t, st.SetValidators(validators))
 
-		comm1, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1 /*slot*/, 0 /*committeeIndex*/)
+		comm1, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1 /*slot*/, 0 /*committeeIndex*/)
 		require.NoError(t, err)
 		att1 := util.HydrateAttestation(&ethpb.Attestation{
 			AggregationBits: bitfield.NewBitlist(uint64(len(comm1))),
@@ -621,7 +621,7 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 		}
 		att1.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-		comm2, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1 /*slot*/, 1 /*committeeIndex*/)
+		comm2, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1 /*slot*/, 1 /*committeeIndex*/)
 		require.NoError(t, err)
 		att2 := util.HydrateAttestation(&ethpb.Attestation{
 			AggregationBits: bitfield.NewBitlist(uint64(len(comm2))),
@@ -651,7 +651,7 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 		require.NoError(t, st.SetSlot(5))
 		require.NoError(t, st.SetValidators(validators))
 
-		comm1, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1 /*slot*/, 0 /*committeeIndex*/)
+		comm1, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1 /*slot*/, 0 /*committeeIndex*/)
 		require.NoError(t, err)
 		commBits1 := primitives.NewAttestationCommitteeBits()
 		commBits1.SetBitAt(0, true)
@@ -673,7 +673,7 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 		}
 		att1.Signature = bls.AggregateSignatures(sigs).Marshal()
 
-		comm2, err := helpers.BeaconCommitteeFromState(context.Background(), st, 1 /*slot*/, 1 /*committeeIndex*/)
+		comm2, err := helpers.BeaconCommitteeFromState(t.Context(), st, 1 /*slot*/, 1 /*committeeIndex*/)
 		require.NoError(t, err)
 		commBits2 := primitives.NewAttestationCommitteeBits()
 		commBits2.SetBitAt(1, true)
@@ -702,7 +702,7 @@ func TestRetrieveAttestationSignatureSet_VerifiesMultipleAttestations(t *testing
 }
 
 func TestRetrieveAttestationSignatureSet_AcrossFork(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	numOfValidators := uint64(params.BeaconConfig().SlotsPerEpoch.Mul(4))
 	validators := make([]*ethpb.Validator, numOfValidators)
 	_, keys, err := util.DeterministicDepositsAndKeys(numOfValidators)

beacon-chain/core/blocks/attester_slashing_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
@@ -63,7 +62,7 @@ func TestProcessAttesterSlashings_DataNotSlashable(t *testing.T) {
 	for i, s := range b.Block.Body.AttesterSlashings {
 		ss[i] = s
 	}
-	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, ss, v.SlashValidator)
+	_, err = blocks.ProcessAttesterSlashings(t.Context(), beaconState, ss, v.SlashValidator)
 	assert.ErrorContains(t, "attestations are not slashable", err)
 }
 
@@ -102,7 +101,7 @@ func TestProcessAttesterSlashings_IndexedAttestationFailedToVerify(t *testing.T)
 	for i, s := range b.Block.Body.AttesterSlashings {
 		ss[i] = s
 	}
-	_, err = blocks.ProcessAttesterSlashings(context.Background(), beaconState, ss, v.SlashValidator)
+	_, err = blocks.ProcessAttesterSlashings(t.Context(), beaconState, ss, v.SlashValidator)
 	assert.ErrorContains(t, "validator indices count exceeds MAX_VALIDATORS_PER_COMMITTEE", err)
 }
 
@@ -244,7 +243,7 @@ func TestProcessAttesterSlashings_AppliesCorrectStatus(t *testing.T) {
 			currentSlot := 2 * params.BeaconConfig().SlotsPerEpoch
 			require.NoError(t, tc.st.SetSlot(currentSlot))
 
-			newState, err := blocks.ProcessAttesterSlashings(context.Background(), tc.st, []ethpb.AttSlashing{tc.slashing}, v.SlashValidator)
+			newState, err := blocks.ProcessAttesterSlashings(t.Context(), tc.st, []ethpb.AttSlashing{tc.slashing}, v.SlashValidator)
 			require.NoError(t, err)
 			newRegistry := newState.Validators()
 

beacon-chain/core/blocks/block_operations_fuzz_test.go

@@ -1,7 +1,6 @@
 package blocks
 
 import (
-	"context"
 	"testing"
 
 	v "github.com/OffchainLabs/prysm/v6/beacon-chain/core/validators"
@@ -11,13 +10,14 @@ import (
 	"github.com/OffchainLabs/prysm/v6/consensus-types/blocks"
 	"github.com/OffchainLabs/prysm/v6/consensus-types/primitives"
 	ethpb "github.com/OffchainLabs/prysm/v6/proto/prysm/v1alpha1"
+	"github.com/OffchainLabs/prysm/v6/testing/fuzz"
 	"github.com/OffchainLabs/prysm/v6/testing/require"
-	fuzz "github.com/google/gofuzz"
+	gofuzz "github.com/google/gofuzz"
 )
 
 func TestFuzzProcessAttestationNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
-	ctx := context.Background()
+	fuzzer := gofuzz.NewWithSeed(0)
+	ctx := t.Context()
 	state := &ethpb.BeaconState{}
 	att := &ethpb.Attestation{}
 
@@ -28,11 +28,12 @@ func TestFuzzProcessAttestationNoVerify_10000(t *testing.T) {
 		require.NoError(t, err)
 		_, err = ProcessAttestationNoVerifySignature(ctx, s, att)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessBlockHeader_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	block := &ethpb.SignedBeaconBlock{}
 
@@ -47,13 +48,14 @@ func TestFuzzProcessBlockHeader_10000(t *testing.T) {
 		}
 		wsb, err := blocks.NewSignedBeaconBlock(block)
 		require.NoError(t, err)
-		_, err = ProcessBlockHeader(context.Background(), s, wsb)
+		_, err = ProcessBlockHeader(t.Context(), s, wsb)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzverifyDepositDataSigningRoot_10000(_ *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	var ba []byte
 	var pubkey [fieldparams.BLSPubkeyLength]byte
 	var sig [96]byte
@@ -77,14 +79,14 @@ func TestFuzzverifyDepositDataSigningRoot_10000(_ *testing.T) {
 }
 
 func TestFuzzProcessEth1DataInBlock_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	e := &ethpb.Eth1Data{}
 	state, err := state_native.InitializeFromProtoUnsafePhase0(&ethpb.BeaconState{})
 	require.NoError(t, err)
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(e)
-		s, err := ProcessEth1DataInBlock(context.Background(), state, e)
+		s, err := ProcessEth1DataInBlock(t.Context(), state, e)
 		if err != nil && s != nil {
 			t.Fatalf("state should be nil on err. found: %v on error: %v for state: %v and eth1data: %v", s, err, state, e)
 		}
@@ -92,7 +94,7 @@ func TestFuzzProcessEth1DataInBlock_10000(t *testing.T) {
 }
 
 func TestFuzzareEth1DataEqual_10000(_ *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	eth1data := &ethpb.Eth1Data{}
 	eth1data2 := &ethpb.Eth1Data{}
 
@@ -105,7 +107,7 @@ func TestFuzzareEth1DataEqual_10000(_ *testing.T) {
 }
 
 func TestFuzzEth1DataHasEnoughSupport_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	eth1data := &ethpb.Eth1Data{}
 	var stateVotes []*ethpb.Eth1Data
 	for i := 0; i < 100000; i++ {
@@ -117,12 +119,13 @@ func TestFuzzEth1DataHasEnoughSupport_10000(t *testing.T) {
 		require.NoError(t, err)
 		_, err = Eth1DataHasEnoughSupport(s, eth1data)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 
 }
 
 func TestFuzzProcessBlockHeaderNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	block := &ethpb.BeaconBlock{}
 
@@ -131,13 +134,14 @@ func TestFuzzProcessBlockHeaderNoVerify_10000(t *testing.T) {
 		fuzzer.Fuzz(block)
 		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
 		require.NoError(t, err)
-		_, err = ProcessBlockHeaderNoVerify(context.Background(), s, block.Slot, block.ProposerIndex, block.ParentRoot, []byte{})
+		_, err = ProcessBlockHeaderNoVerify(t.Context(), s, block.Slot, block.ProposerIndex, block.ParentRoot, []byte{})
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessRandao_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	b := &ethpb.SignedBeaconBlock{}
 
@@ -151,15 +155,16 @@ func TestFuzzProcessRandao_10000(t *testing.T) {
 		}
 		wsb, err := blocks.NewSignedBeaconBlock(b)
 		require.NoError(t, err)
-		r, err := ProcessRandao(context.Background(), s, wsb)
+		r, err := ProcessRandao(t.Context(), s, wsb)
 		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, b)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessRandaoNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	blockBody := &ethpb.BeaconBlockBody{}
 
@@ -172,14 +177,15 @@ func TestFuzzProcessRandaoNoVerify_10000(t *testing.T) {
 		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, blockBody)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessProposerSlashings_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	p := &ethpb.ProposerSlashing{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(p)
@@ -189,11 +195,12 @@ func TestFuzzProcessProposerSlashings_10000(t *testing.T) {
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and slashing: %v", r, err, state, p)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzVerifyProposerSlashing_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	proposerSlashing := &ethpb.ProposerSlashing{}
 	for i := 0; i < 10000; i++ {
@@ -203,14 +210,15 @@ func TestFuzzVerifyProposerSlashing_10000(t *testing.T) {
 		require.NoError(t, err)
 		err = VerifyProposerSlashing(s, proposerSlashing)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessAttesterSlashings_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	a := &ethpb.AttesterSlashing{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(a)
@@ -220,14 +228,15 @@ func TestFuzzProcessAttesterSlashings_10000(t *testing.T) {
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and slashing: %v", r, err, state, a)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzVerifyAttesterSlashing_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	attesterSlashing := &ethpb.AttesterSlashing{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(attesterSlashing)
@@ -235,11 +244,12 @@ func TestFuzzVerifyAttesterSlashing_10000(t *testing.T) {
 		require.NoError(t, err)
 		err = VerifyAttesterSlashing(ctx, s, attesterSlashing)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzIsSlashableAttestationData_10000(_ *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	attestationData := &ethpb.AttestationData{}
 	attestationData2 := &ethpb.AttestationData{}
 
@@ -251,7 +261,7 @@ func TestFuzzIsSlashableAttestationData_10000(_ *testing.T) {
 }
 
 func TestFuzzslashableAttesterIndices_10000(_ *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	attesterSlashing := &ethpb.AttesterSlashing{}
 
 	for i := 0; i < 10000; i++ {
@@ -261,10 +271,10 @@ func TestFuzzslashableAttesterIndices_10000(_ *testing.T) {
 }
 
 func TestFuzzProcessAttestationsNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	b := &ethpb.SignedBeaconBlock{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(b)
@@ -279,14 +289,15 @@ func TestFuzzProcessAttestationsNoVerify_10000(t *testing.T) {
 		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, b)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzVerifyIndexedAttestationn_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	idxAttestation := &ethpb.IndexedAttestation{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(idxAttestation)
@@ -294,11 +305,12 @@ func TestFuzzVerifyIndexedAttestationn_10000(t *testing.T) {
 		require.NoError(t, err)
 		err = VerifyIndexedAttestation(ctx, s, idxAttestation)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzverifyDeposit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	deposit := &ethpb.Deposit{}
 	for i := 0; i < 10000; i++ {
@@ -308,14 +320,15 @@ func TestFuzzverifyDeposit_10000(t *testing.T) {
 		require.NoError(t, err)
 		err = VerifyDeposit(s, deposit)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessVoluntaryExits_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	e := &ethpb.SignedVoluntaryExit{}
-	ctx := context.Background()
+	ctx := t.Context()
 	for i := 0; i < 10000; i++ {
 		fuzzer.Fuzz(state)
 		fuzzer.Fuzz(e)
@@ -325,11 +338,12 @@ func TestFuzzProcessVoluntaryExits_10000(t *testing.T) {
 		if err != nil && r != nil {
 			t.Fatalf("return value should be nil on err. found: %v on error: %v for state: %v and exit: %v", r, err, state, e)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzProcessVoluntaryExitsNoVerify_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	state := &ethpb.BeaconState{}
 	e := &ethpb.SignedVoluntaryExit{}
 	for i := 0; i < 10000; i++ {
@@ -337,15 +351,16 @@ func TestFuzzProcessVoluntaryExitsNoVerify_10000(t *testing.T) {
 		fuzzer.Fuzz(e)
 		s, err := state_native.InitializeFromProtoUnsafePhase0(state)
 		require.NoError(t, err)
-		r, err := ProcessVoluntaryExits(context.Background(), s, []*ethpb.SignedVoluntaryExit{e})
+		r, err := ProcessVoluntaryExits(t.Context(), s, []*ethpb.SignedVoluntaryExit{e})
 		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, e)
 		}
+		fuzz.FreeMemory(i)
 	}
 }
 
 func TestFuzzVerifyExit_10000(t *testing.T) {
-	fuzzer := fuzz.NewWithSeed(0)
+	fuzzer := gofuzz.NewWithSeed(0)
 	ve := &ethpb.SignedVoluntaryExit{}
 	rawVal := &ethpb.Validator{}
 	fork := &ethpb.Fork{}
@@ -369,5 +384,6 @@ func TestFuzzVerifyExit_10000(t *testing.T) {
 		_ = err
 		err = VerifyExitAndSignature(val, s, ve)
 		_ = err
+		fuzz.FreeMemory(i)
 	}
 }

beacon-chain/core/blocks/block_regression_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
@@ -95,7 +94,7 @@ func TestProcessAttesterSlashings_RegressionSlashableIndices(t *testing.T) {
 	for i, s := range b.Block.Body.AttesterSlashings {
 		ss[i] = s
 	}
-	newState, err := blocks.ProcessAttesterSlashings(context.Background(), beaconState, ss, v.SlashValidator)
+	newState, err := blocks.ProcessAttesterSlashings(t.Context(), beaconState, ss, v.SlashValidator)
 	require.NoError(t, err)
 	newRegistry := newState.Validators()
 	if !newRegistry[expectedSlashedVal].Slashed {

beacon-chain/core/blocks/deposit_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
@@ -46,7 +45,7 @@ func TestBatchVerifyDepositsSignatures_Ok(t *testing.T) {
 
 	deposit.Proof = proof
 	require.NoError(t, err)
-	verified, err := blocks.BatchVerifyDepositsSignatures(context.Background(), []*ethpb.Deposit{deposit})
+	verified, err := blocks.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
 	require.NoError(t, err)
 	require.Equal(t, true, verified)
 }
@@ -69,7 +68,7 @@ func TestBatchVerifyDepositsSignatures_InvalidSignature(t *testing.T) {
 
 	deposit.Proof = proof
 	require.NoError(t, err)
-	verified, err := blocks.BatchVerifyDepositsSignatures(context.Background(), []*ethpb.Deposit{deposit})
+	verified, err := blocks.BatchVerifyDepositsSignatures(t.Context(), []*ethpb.Deposit{deposit})
 	require.NoError(t, err)
 	require.Equal(t, false, verified)
 }
@@ -164,7 +163,7 @@ func TestBatchVerifyPendingDepositsSignatures_Ok(t *testing.T) {
 	sig2 := sk2.Sign(sr2[:])
 	pendingDeposit2.Signature = sig2.Marshal()
 
-	verified, err := blocks.BatchVerifyPendingDepositsSignatures(context.Background(), []*ethpb.PendingDeposit{pendingDeposit, pendingDeposit2})
+	verified, err := blocks.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit, pendingDeposit2})
 	require.NoError(t, err)
 	require.Equal(t, true, verified)
 }
@@ -175,7 +174,7 @@ func TestBatchVerifyPendingDepositsSignatures_InvalidSignature(t *testing.T) {
 		WithdrawalCredentials: make([]byte, 32),
 		Signature:             make([]byte, 96),
 	}
-	verified, err := blocks.BatchVerifyPendingDepositsSignatures(context.Background(), []*ethpb.PendingDeposit{pendingDeposit})
+	verified, err := blocks.BatchVerifyPendingDepositsSignatures(t.Context(), []*ethpb.PendingDeposit{pendingDeposit})
 	require.NoError(t, err)
 	require.Equal(t, false, verified)
 }

beacon-chain/core/blocks/eth1_data_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"context"
 	"fmt"
 	"testing"
 
@@ -177,7 +176,7 @@ func TestProcessEth1Data_SetsCorrectly(t *testing.T) {
 
 	period := uint64(params.BeaconConfig().SlotsPerEpoch.Mul(uint64(params.BeaconConfig().EpochsPerEth1VotingPeriod)))
 	for i := uint64(0); i < period; i++ {
-		processedState, err := blocks.ProcessEth1DataInBlock(context.Background(), beaconState, b.Block.Body.Eth1Data)
+		processedState, err := blocks.ProcessEth1DataInBlock(t.Context(), beaconState, b.Block.Body.Eth1Data)
 		require.NoError(t, err)
 		require.Equal(t, true, processedState.Version() == version.Phase0)
 	}

beacon-chain/core/blocks/exit_test.go

@@ -1,7 +1,6 @@
 package blocks_test
 
 import (
-	"context"
 	"testing"
 
 	"github.com/OffchainLabs/prysm/v6/beacon-chain/core/blocks"
@@ -47,7 +46,7 @@ func TestProcessVoluntaryExits_NotActiveLongEnoughToExit(t *testing.T) {
 	}
 
 	want := "validator has not been active long enough to exit"
-	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b.Block.Body.VoluntaryExits)
+	_, err = blocks.ProcessVoluntaryExits(t.Context(), state, b.Block.Body.VoluntaryExits)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -77,7 +76,7 @@ func TestProcessVoluntaryExits_ExitAlreadySubmitted(t *testing.T) {
 	}
 
 	want := "validator with index 0 has already submitted an exit, which will take place at epoch: 10"
-	_, err = blocks.ProcessVoluntaryExits(context.Background(), state, b.Block.Body.VoluntaryExits)
+	_, err = blocks.ProcessVoluntaryExits(t.Context(), state, b.Block.Body.VoluntaryExits)
 	assert.ErrorContains(t, want, err)
 }
 
@@ -125,7 +124,7 @@ func TestProcessVoluntaryExits_AppliesCorrectStatus(t *testing.T) {
 		},
 	}
 
-	newState, err := blocks.ProcessVoluntaryExits(context.Background(), state, b.Block.Body.VoluntaryExits)
+	newState, err := blocks.ProcessVoluntaryExits(t.Context(), state, b.Block.Body.VoluntaryExits)
 	require.NoError(t, err, "Could not process exits")
 	newRegistry := newState.Validators()
 	if newRegistry[0].ExitEpoch != helpers.ActivationExitEpoch(primitives.Epoch(state.Slot()/params.BeaconConfig().SlotsPerEpoch)) {