initial events

api/server/structs/block.go

@@ -540,6 +540,12 @@ type PayloadAttestation struct {
 	Signature       string                  `json:"signature"`
 }
 
+type PayloadAttestationMessage struct {
+	ValidatorIndex string                  `json:"validator_index"`
+	Data           *PayloadAttestationData `json:"data"`
+	Signature      string                  `json:"signature"`
+}
+
 type BeaconBlockBodyGloas struct {
 	RandaoReveal              string                        `json:"randao_reveal"`
 	Eth1Data                  *Eth1Data                     `json:"eth1_data"`

api/server/structs/conversions_block.go

@@ -2971,6 +2971,14 @@ func PayloadAttestationDataFromConsensus(d *eth.PayloadAttestationData) *Payload
 	}
 }
 
+func PayloadAttestationMessageFromConsensus(m *eth.PayloadAttestationMessage) *PayloadAttestationMessage {
+	return &PayloadAttestationMessage{
+		ValidatorIndex: fmt.Sprintf("%d", m.ValidatorIndex),
+		Data:           PayloadAttestationDataFromConsensus(m.Data),
+		Signature:      hexutil.Encode(m.Signature),
+	}
+}
+
 func (b *SignedBeaconBlockGloas) ToConsensus() (*eth.SignedBeaconBlockGloas, error) {
 	if b == nil {
 		return nil, errNilValue

api/server/structs/endpoints_events.go

@@ -112,3 +112,8 @@ type LightClientOptimisticUpdateEvent struct {
 	Version string                       `json:"version"`
 	Data    *LightClientOptimisticUpdate `json:"data"`
 }
+
+type ExecutionPayloadAvailableEvent struct {
+	Slot      string `json:"slot"`
+	BlockRoot string `json:"block_root"`
+}

beacon-chain/core/feed/operation/events.go

@@ -46,6 +46,14 @@ const (
 
 	// DataColumnReceived is sent after a data column has been seen after gossip validation rules.
 	DataColumnReceived = 12
+
+	// ExecutionPayloadBidReceived is sent after a signed execution payload bid is received from gossip or API
+	// that passes gossip validation on the execution_payload_bid topic.
+	ExecutionPayloadBidReceived = 13
+
+	// PayloadAttestationMessageReceived is sent after a payload attestation message is received
+	// that passes validation rules of the payload_attestation_message topic.
+	PayloadAttestationMessageReceived = 14
 )
 
 // UnAggregatedAttReceivedData is the data sent with UnaggregatedAttReceived events.
@@ -114,3 +122,13 @@ type DataColumnReceivedData struct {
 	BlockRoot      [32]byte
 	KzgCommitments [][]byte
 }
+
+// ExecutionPayloadBidReceivedData is the data sent with ExecutionPayloadBidReceived events.
+type ExecutionPayloadBidReceivedData struct {
+	SignedBid *ethpb.SignedExecutionPayloadBid
+}
+
+// PayloadAttestationMessageReceivedData is the data sent with PayloadAttestationMessageReceived events.
+type PayloadAttestationMessageReceivedData struct {
+	PayloadAttestationMessage *ethpb.PayloadAttestationMessage
+}

beacon-chain/core/feed/state/events.go

@@ -33,6 +33,9 @@ const (
 	LightClientOptimisticUpdate
 	// PayloadAttributes events are fired upon a missed slot or new head.
 	PayloadAttributes
+	// ExecutionPayloadAvailable is sent when the node has verified that the execution payload
+	// and blobs for a block are available and ready for payload attestation.
+	ExecutionPayloadAvailable
 )
 
 // BlockProcessedData is the data sent with BlockProcessed events.
@@ -72,3 +75,11 @@ type InitializedData struct {
 	// GenesisValidatorsRoot represents state.validators.HashTreeRoot().
 	GenesisValidatorsRoot []byte
 }
+
+// ExecutionPayloadAvailableData is the data sent with ExecutionPayloadAvailable events.
+type ExecutionPayloadAvailableData struct {
+	// Slot is the slot of the block whose execution payload became available.
+	Slot primitives.Slot
+	// BlockRoot is the root of the block whose execution payload became available.
+	BlockRoot [32]byte
+}

beacon-chain/rpc/eth/events/events.go

@@ -74,6 +74,12 @@ const (
 	LightClientOptimisticUpdateTopic = "light_client_optimistic_update"
 	// DataColumnTopic represents a data column sidecar event topic
 	DataColumnTopic = "data_column_sidecar"
+	// ExecutionPayloadAvailableTopic represents an event indicating execution payload and blobs are available.
+	ExecutionPayloadAvailableTopic = "execution_payload_available"
+	// ExecutionPayloadBidTopic represents an event for a signed execution payload bid passing gossip validation.
+	ExecutionPayloadBidTopic = "execution_payload_bid"
+	// PayloadAttestationMessageTopic represents an event for a payload attestation message passing validation.
+	PayloadAttestationMessageTopic = "payload_attestation_message"
 )
 
 var (
@@ -108,6 +114,8 @@ var opsFeedEventTopics = map[feed.EventType]string{
 	operation.ProposerSlashingReceived:          ProposerSlashingTopic,
 	operation.BlockGossipReceived:               BlockGossipTopic,
 	operation.DataColumnReceived:                DataColumnTopic,
+	operation.ExecutionPayloadBidReceived:       ExecutionPayloadBidTopic,
+	operation.PayloadAttestationMessageReceived: PayloadAttestationMessageTopic,
 }
 
 var stateFeedEventTopics = map[feed.EventType]string{
@@ -118,6 +126,7 @@ var stateFeedEventTopics = map[feed.EventType]string{
 	statefeed.Reorg:                       ChainReorgTopic,
 	statefeed.BlockProcessed:              BlockTopic,
 	statefeed.PayloadAttributes:           PayloadAttributesTopic,
+	statefeed.ExecutionPayloadAvailable:   ExecutionPayloadAvailableTopic,
 }
 
 var topicsForStateFeed = topicsForFeed(stateFeedEventTopics)
@@ -466,6 +475,12 @@ func topicForEvent(event *feed.Event) string {
 		return PayloadAttributesTopic
 	case *operation.DataColumnReceivedData:
 		return DataColumnTopic
+	case *operation.ExecutionPayloadBidReceivedData:
+		return ExecutionPayloadBidTopic
+	case *operation.PayloadAttestationMessageReceivedData:
+		return PayloadAttestationMessageTopic
+	case *statefeed.ExecutionPayloadAvailableData:
+		return ExecutionPayloadAvailableTopic
 	default:
 		return InvalidTopic
 	}
@@ -638,6 +653,21 @@ func (s *Server) lazyReaderForEvent(ctx context.Context, event *feed.Event, topi
 			}
 			return jsonMarshalReader(eventName, blk)
 		}, nil
+	case *statefeed.ExecutionPayloadAvailableData:
+		return func() io.Reader {
+			return jsonMarshalReader(eventName, &structs.ExecutionPayloadAvailableEvent{
+				Slot:      fmt.Sprintf("%d", v.Slot),
+				BlockRoot: hexutil.Encode(v.BlockRoot[:]),
+			})
+		}, nil
+	case *operation.ExecutionPayloadBidReceivedData:
+		return func() io.Reader {
+			return jsonMarshalReader(eventName, structs.SignedExecutionPayloadBidFromConsensus(v.SignedBid))
+		}, nil
+	case *operation.PayloadAttestationMessageReceivedData:
+		return func() io.Reader {
+			return jsonMarshalReader(eventName, structs.PayloadAttestationMessageFromConsensus(v.PayloadAttestationMessage))
+		}, nil
 	default:
 		return nil, errors.Wrapf(errUnhandledEventData, "event data type %T unsupported", v)
 	}

beacon-chain/rpc/eth/events/events_test.go

@@ -123,6 +123,8 @@ func operationEventsFixtures(t *testing.T) (*topicRequest, []*feed.Event) {
 		ProposerSlashingTopic,
 		BlockGossipTopic,
 		DataColumnTopic,
+		ExecutionPayloadBidTopic,
+		PayloadAttestationMessageTopic,
 	})
 	require.NoError(t, err)
 	ro, err := blocks.NewROBlob(util.HydrateBlobSidecar(&eth.BlobSidecar{}))
@@ -312,6 +314,42 @@ func operationEventsFixtures(t *testing.T) (*topicRequest, []*feed.Event) {
 				KzgCommitments: [][]byte{{'a'}, {'b'}, {'c'}},
 			},
 		},
+		{
+			Type: operation.ExecutionPayloadBidReceived,
+			Data: &operation.ExecutionPayloadBidReceivedData{
+				SignedBid: &eth.SignedExecutionPayloadBid{
+					Message: &eth.ExecutionPayloadBid{
+						ParentBlockHash:        make([]byte, 32),
+						ParentBlockRoot:        make([]byte, 32),
+						BlockHash:              make([]byte, 32),
+						PrevRandao:             make([]byte, 32),
+						FeeRecipient:           make([]byte, 20),
+						GasLimit:               30000000,
+						BuilderIndex:           42,
+						Slot:                   10,
+						Value:                  1000000000,
+						ExecutionPayment:       0,
+						BlobKzgCommitmentsRoot: make([]byte, 32),
+					},
+					Signature: make([]byte, 96),
+				},
+			},
+		},
+		{
+			Type: operation.PayloadAttestationMessageReceived,
+			Data: &operation.PayloadAttestationMessageReceivedData{
+				PayloadAttestationMessage: &eth.PayloadAttestationMessage{
+					ValidatorIndex: 123,
+					Data: &eth.PayloadAttestationData{
+						BeaconBlockRoot:   make([]byte, 32),
+						Slot:              10,
+						PayloadPresent:    true,
+						BlobDataAvailable: true,
+					},
+					Signature: make([]byte, 96),
+				},
+			},
+		},
 	}
 }
 
@@ -393,6 +431,7 @@ func TestStreamEvents_OperationsEvents(t *testing.T) {
 			FinalizedCheckpointTopic,
 			ChainReorgTopic,
 			BlockTopic,
+			ExecutionPayloadAvailableTopic,
 		})
 		require.NoError(t, err)
 		request := topics.testHttpRequest(testSync.ctx, t)
@@ -445,6 +484,13 @@ func TestStreamEvents_OperationsEvents(t *testing.T) {
 					ExecutionOptimistic: false,
 				},
 			},
+			{
+				Type: statefeed.ExecutionPayloadAvailable,
+				Data: &statefeed.ExecutionPayloadAvailableData{
+					Slot:      10,
+					BlockRoot: [32]byte{0x9a},
+				},
+			},
 		}
 
 		go func() {
@@ -721,7 +767,7 @@ func TestStuckReaderScenarios(t *testing.T) {
 
 func wedgedWriterTestCase(t *testing.T, queueDepth func([]*feed.Event) int) {
 	topics, events := operationEventsFixtures(t)
-	require.Equal(t, 12, len(events))
+	require.Equal(t, 14, len(events))
 
 	// set eventFeedDepth to a number lower than the events we intend to send to force the server to drop the reader.
 	stn := mockChain.NewEventFeedWrapper()

changelog/james-prysm_deflake-evaluator.md

@@ -1,3 +0,0 @@
-### Ignored
-
-- adding some short retries for some end to end evaluators in an attempt to deflake tests.

changelog/james-prysm_gloas-events.md

@@ -0,0 +1,3 @@
+### Added
+
+- the following events available at gloas `execution_payload_available`, `execution_payload_bid`,and `payload_attestation_message`

testing/endtoend/components/eth1/transactions.go

@@ -40,7 +40,6 @@ type TransactionGenerator struct {
 	cancel        context.CancelFunc
 	paused        bool
 	useLargeBlobs bool // Use large blob transactions (6 blobs per tx) for BPO testing
-	blobTxCount   int  // Number of blob transactions per slot (0 means default of 5)
 }
 
 func (t *TransactionGenerator) UnderlyingProcess() *os.Process {
@@ -49,8 +48,8 @@ func (t *TransactionGenerator) UnderlyingProcess() *os.Process {
 	return &os.Process{}
 }
 
-func NewTransactionGenerator(keystore string, seed int64, useLargeBlobs bool, blobTxCount int) *TransactionGenerator {
-	return &TransactionGenerator{keystore: keystore, seed: seed, useLargeBlobs: useLargeBlobs, blobTxCount: blobTxCount}
+func NewTransactionGenerator(keystore string, seed int64, useLargeBlobs bool) *TransactionGenerator {
+	return &TransactionGenerator{keystore: keystore, seed: seed, useLargeBlobs: useLargeBlobs}
 }
 
 func (t *TransactionGenerator) Start(ctx context.Context) error {
@@ -115,7 +114,7 @@ func (t *TransactionGenerator) Start(ctx context.Context) error {
 				continue
 			}
 			backend := ethclient.NewClient(client)
-			err = SendTransaction(client, mineKey.PrivateKey, gasPrice, mineKey.Address.String(), txCount, backend, false, t.useLargeBlobs, t.blobTxCount)
+			err = SendTransaction(client, mineKey.PrivateKey, gasPrice, mineKey.Address.String(), txCount, backend, false, t.useLargeBlobs)
 			if err != nil {
 				return err
 			}
@@ -129,7 +128,7 @@ func (s *TransactionGenerator) Started() <-chan struct{} {
 	return s.started
 }
 
-func SendTransaction(client *rpc.Client, key *ecdsa.PrivateKey, gasPrice *big.Int, addr string, txCount uint64, backend *ethclient.Client, al bool, useLargeBlobs bool, blobTxCount int) error {
+func SendTransaction(client *rpc.Client, key *ecdsa.PrivateKey, gasPrice *big.Int, addr string, txCount uint64, backend *ethclient.Client, al bool, useLargeBlobs bool) error {
 	sender := common.HexToAddress(addr)
 	nonce, err := backend.PendingNonceAt(context.Background(), fundedAccount.Address)
 	if err != nil {
@@ -151,19 +150,14 @@ func SendTransaction(client *rpc.Client, key *ecdsa.PrivateKey, gasPrice *big.In
 	clock := startup.NewClock(e2e.TestParams.CLGenesisTime, [32]byte{})
 	isPostFulu := clock.CurrentEpoch() >= params.BeaconConfig().FuluForkEpoch
 
-	// Default to 5 blob transactions per slot if not configured.
-	numBlobTxs := blobTxCount
-	if numBlobTxs <= 0 {
-		numBlobTxs = 5
-	}
-
 	g, _ := errgroup.WithContext(context.Background())
-	txs := make([]*types.Transaction, numBlobTxs)
+	txs := make([]*types.Transaction, 10)
 
 	// Send blob transactions - use different versions pre/post Fulu
 	if isPostFulu {
 		logrus.Info("Sending blob transactions with cell proofs")
-		for index := range uint64(numBlobTxs) {
+		// Reduced from 10 to 5 to reduce load and prevent builder/EL timeouts
+		for index := range uint64(5) {
 
 			g.Go(func() error {
 				tx, err := RandomBlobCellTx(client, fundedAccount.Address, nonce+index, gasPrice, chainid, al, useLargeBlobs)
@@ -182,7 +176,8 @@ func SendTransaction(client *rpc.Client, key *ecdsa.PrivateKey, gasPrice *big.In
 		}
 	} else {
 		logrus.Info("Sending blob transactions with sidecars")
-		for index := range uint64(numBlobTxs) {
+		// Reduced from 10 to 5 to reduce load and prevent builder/EL timeouts
+		for index := range uint64(5) {
 
 			g.Go(func() error {
 				tx, err := RandomBlobTx(client, fundedAccount.Address, nonce+index, gasPrice, chainid, al, useLargeBlobs)

testing/endtoend/endtoend_test.go

@@ -252,7 +252,7 @@ func (r *testRunner) testDepositsAndTx(ctx context.Context, g *errgroup.Group,
 }
 
 func (r *testRunner) testTxGeneration(ctx context.Context, g *errgroup.Group, keystorePath string, requiredNodes []e2etypes.ComponentRunner) {
-	txGenerator := eth1.NewTransactionGenerator(keystorePath, r.config.Seed, r.config.UseLargeBlobs, r.config.BlobTxCount)
+	txGenerator := eth1.NewTransactionGenerator(keystorePath, r.config.Seed, r.config.UseLargeBlobs)
 	r.comHandler.txGen = txGenerator
 	g.Go(func() error {
 		if err := helpers.ComponentsStarted(ctx, requiredNodes); err != nil {

testing/endtoend/evaluators/node.go

@@ -156,9 +156,19 @@ func waitForMidEpoch(conn *grpc.ClientConn) error {
 	}
 }
 
-// getHeadEpochs fetches the head epoch from all beacon nodes concurrently.
-func getHeadEpochs(conns []*grpc.ClientConn) ([]primitives.Epoch, error) {
-	epochs := make([]primitives.Epoch, len(conns))
+func allNodesHaveSameHead(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
+	// Wait until we're at least halfway into the epoch to avoid race conditions
+	// at epoch boundaries where nodes may report different epochs.
+	if err := waitForMidEpoch(conns[0]); err != nil {
+		return errors.Wrap(err, "failed waiting for mid-epoch")
+	}
+
+	headEpochs := make([]primitives.Epoch, len(conns))
+	headBlockRoots := make([][]byte, len(conns))
+	justifiedRoots := make([][]byte, len(conns))
+	prevJustifiedRoots := make([][]byte, len(conns))
+	finalizedRoots := make([][]byte, len(conns))
+	chainHeads := make([]*eth.ChainHead, len(conns))
 	g, _ := errgroup.WithContext(context.Background())
 
 	for i, conn := range conns {
@@ -170,145 +180,63 @@ func getHeadEpochs(conns []*grpc.ClientConn) ([]primitives.Epoch, error) {
 			if err != nil {
 				return errors.Wrapf(err, "connection number=%d", conIdx)
 			}
-			epochs[conIdx] = chainHead.HeadEpoch
+			headEpochs[conIdx] = chainHead.HeadEpoch
+			headBlockRoots[conIdx] = chainHead.HeadBlockRoot
+			justifiedRoots[conIdx] = chainHead.JustifiedBlockRoot
+			prevJustifiedRoots[conIdx] = chainHead.PreviousJustifiedBlockRoot
+			finalizedRoots[conIdx] = chainHead.FinalizedBlockRoot
+			chainHeads[conIdx] = chainHead
 			return nil
 		})
 	}
 	if err := g.Wait(); err != nil {
-		return nil, err
+		return err
 	}
-	return epochs, nil
-}
-
-func allNodesHaveSameHead(_ *e2etypes.EvaluationContext, conns ...*grpc.ClientConn) error {
-	// Wait until we're at least halfway into the epoch to avoid race conditions
-	// at epoch boundaries where nodes may report different epochs.
-	if err := waitForMidEpoch(conns[0]); err != nil {
-		return errors.Wrap(err, "failed waiting for mid-epoch")
-	}
-
-	// First, wait for all nodes to reach the same epoch. Sync nodes may be
-	// behind and need time to catch up. We poll every 2 seconds with a
-	// 60 second timeout - this adapts to actual sync progress rather than
-	// using fixed delays.
-	const epochTimeout = 60 * time.Second
-	const epochPollInterval = 2 * time.Second
-	epochDeadline := time.Now().Add(epochTimeout)
-
-	for time.Now().Before(epochDeadline) {
-		epochs, err := getHeadEpochs(conns)
-		if err != nil {
-			return err
-		}
-		allSame := true
-		for i := 1; i < len(epochs); i++ {
-			if epochs[0] != epochs[i] {
-				allSame = false
-				break
-			}
-		}
-		if allSame {
-			break
-		}
-		time.Sleep(epochPollInterval)
-	}
-
-	// Now that epochs match (or timeout reached), do detailed head comparison
-	// with a few retries to handle block propagation delays.
-	const maxRetries = 5
-	const retryDelay = 1 * time.Second
-	var lastErr error
-
-	for attempt := range maxRetries {
-		if attempt > 0 {
-			time.Sleep(retryDelay)
-		}
-
-		headEpochs := make([]primitives.Epoch, len(conns))
-		headBlockRoots := make([][]byte, len(conns))
-		justifiedRoots := make([][]byte, len(conns))
-		prevJustifiedRoots := make([][]byte, len(conns))
-		finalizedRoots := make([][]byte, len(conns))
-		chainHeads := make([]*eth.ChainHead, len(conns))
-		g, _ := errgroup.WithContext(context.Background())
-
-		for i, conn := range conns {
-			conIdx := i
-			currConn := conn
-			g.Go(func() error {
-				beaconClient := eth.NewBeaconChainClient(currConn)
-				chainHead, err := beaconClient.GetChainHead(context.Background(), &emptypb.Empty{})
-				if err != nil {
-					return errors.Wrapf(err, "connection number=%d", conIdx)
-				}
-				headEpochs[conIdx] = chainHead.HeadEpoch
-				headBlockRoots[conIdx] = chainHead.HeadBlockRoot
-				justifiedRoots[conIdx] = chainHead.JustifiedBlockRoot
-				prevJustifiedRoots[conIdx] = chainHead.PreviousJustifiedBlockRoot
-				finalizedRoots[conIdx] = chainHead.FinalizedBlockRoot
-				chainHeads[conIdx] = chainHead
-				return nil
-			})
-		}
-		if err := g.Wait(); err != nil {
-			return err
-		}
-
-		lastErr = nil
-		for i := range conns {
-			if headEpochs[0] != headEpochs[i] {
-				lastErr = fmt.Errorf(
-					"received conflicting head epochs on node %d, expected %d, received %d",
-					i,
-					headEpochs[0],
-					headEpochs[i],
-				)
-				break
-			}
-			if !bytes.Equal(headBlockRoots[0], headBlockRoots[i]) {
-				lastErr = fmt.Errorf(
-					"received conflicting head block roots on node %d, expected %#x, received %#x",
-					i,
-					headBlockRoots[0],
-					headBlockRoots[i],
-				)
-				break
-			}
-			if !bytes.Equal(justifiedRoots[0], justifiedRoots[i]) {
-				lastErr = fmt.Errorf(
-					"received conflicting justified block roots on node %d, expected %#x, received %#x: %s and %s",
-					i,
-					justifiedRoots[0],
-					justifiedRoots[i],
-					chainHeads[0].String(),
-					chainHeads[i].String(),
-				)
-				break
-			}
-			if !bytes.Equal(prevJustifiedRoots[0], prevJustifiedRoots[i]) {
-				lastErr = fmt.Errorf(
-					"received conflicting previous justified block roots on node %d, expected %#x, received %#x",
-					i,
-					prevJustifiedRoots[0],
-					prevJustifiedRoots[i],
-				)
-				break
-			}
-			if !bytes.Equal(finalizedRoots[0], finalizedRoots[i]) {
-				lastErr = fmt.Errorf(
-					"received conflicting finalized epoch roots on node %d, expected %#x, received %#x",
-					i,
-					finalizedRoots[0],
-					finalizedRoots[i],
-				)
-				break
-			}
-		}
-
-		if lastErr == nil {
-			return nil
-		}
-	}
-
-	return lastErr
+
+	for i := range conns {
+		if headEpochs[0] != headEpochs[i] {
+			return fmt.Errorf(
+				"received conflicting head epochs on node %d, expected %d, received %d",
+				i,
+				headEpochs[0],
+				headEpochs[i],
+			)
+		}
+		if !bytes.Equal(headBlockRoots[0], headBlockRoots[i]) {
+			return fmt.Errorf(
+				"received conflicting head block roots on node %d, expected %#x, received %#x",
+				i,
+				headBlockRoots[0],
+				headBlockRoots[i],
+			)
+		}
+		if !bytes.Equal(justifiedRoots[0], justifiedRoots[i]) {
+			return fmt.Errorf(
+				"received conflicting justified block roots on node %d, expected %#x, received %#x: %s and %s",
+				i,
+				justifiedRoots[0],
+				justifiedRoots[i],
+				chainHeads[0].String(),
+				chainHeads[i].String(),
+			)
+		}
+		if !bytes.Equal(prevJustifiedRoots[0], prevJustifiedRoots[i]) {
+			return fmt.Errorf(
+				"received conflicting previous justified block roots on node %d, expected %#x, received %#x",
+				i,
+				prevJustifiedRoots[0],
+				prevJustifiedRoots[i],
+			)
+		}
+		if !bytes.Equal(finalizedRoots[0], finalizedRoots[i]) {
+			return fmt.Errorf(
+				"received conflicting finalized epoch roots on node %d, expected %#x, received %#x",
+				i,
+				finalizedRoots[0],
+				finalizedRoots[i],
+			)
+		}
+	}
+
+	return nil
 }

testing/endtoend/evaluators/validator.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"net/http"
 	"strconv"
-	"time"
 
 	"github.com/OffchainLabs/prysm/v7/api/server/structs"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/altair"
@@ -124,25 +123,6 @@ func validatorsAreActive(ec *types.EvaluationContext, conns ...*grpc.ClientConn)
 
 // validatorsParticipating ensures the validators have an acceptable participation rate.
 func validatorsParticipating(_ *types.EvaluationContext, conns ...*grpc.ClientConn) error {
-	// Retry up to 3 times with 2 second delays to handle timing flakes where
-	// attestations haven't been fully processed yet due to block propagation delays.
-	const maxRetries = 3
-	const retryDelay = 2 * time.Second
-	var lastErr error
-
-	for attempt := range maxRetries {
-		if attempt > 0 {
-			time.Sleep(retryDelay)
-		}
-		lastErr = checkValidatorsParticipating(conns)
-		if lastErr == nil {
-			return nil
-		}
-	}
-	return lastErr
-}
-
-func checkValidatorsParticipating(conns []*grpc.ClientConn) error {
 	conn := conns[0]
 	client := ethpb.NewBeaconChainClient(conn)
 	validatorRequest := &ethpb.GetValidatorParticipationRequest{}
@@ -254,25 +234,6 @@ func checkValidatorsParticipating(conns []*grpc.ClientConn) error {
 // validatorsSyncParticipation ensures the validators have an acceptable participation rate for
 // sync committee assignments.
 func validatorsSyncParticipation(_ *types.EvaluationContext, conns ...*grpc.ClientConn) error {
-	// Retry up to 3 times with 2 second delays to handle timing flakes where
-	// sync committee messages haven't fully propagated yet.
-	const maxRetries = 3
-	const retryDelay = 2 * time.Second
-	var lastErr error
-
-	for attempt := range maxRetries {
-		if attempt > 0 {
-			time.Sleep(retryDelay)
-		}
-		lastErr = checkSyncParticipation(conns)
-		if lastErr == nil {
-			return nil
-		}
-	}
-	return lastErr
-}
-
-func checkSyncParticipation(conns []*grpc.ClientConn) error {
 	conn := conns[0]
 	client := ethpb.NewNodeClient(conn)
 	altairClient := ethpb.NewBeaconChainClient(conn)
@@ -311,9 +272,9 @@ func checkSyncParticipation(conns []*grpc.ClientConn) error {
 			// Skip fork slot.
 			continue
 		}
-		// Skip early slots at genesis - validators need time to ramp up after chain start
+		// Skip slots 1-2 at genesis - validators need time to ramp up after chain start
 		// due to doppelganger protection. This is a startup timing issue, not a fork transition issue.
-		if b.Block().Slot() < 5 {
+		if b.Block().Slot() < 3 {
 			continue
 		}
 		expectedParticipation := expectedSyncParticipation
@@ -328,11 +289,6 @@ func checkSyncParticipation(conns []*grpc.ClientConn) error {
 		if err != nil {
 			return err
 		}
-		// Skip blocks with zero sync bits - these are typically empty/anomalous blocks
-		// where the proposer didn't receive sync committee contributions in time.
-		if syncAgg.SyncCommitteeBits.Count() == 0 {
-			continue
-		}
 		threshold := uint64(float64(syncAgg.SyncCommitteeBits.Len()) * expectedParticipation)
 		if syncAgg.SyncCommitteeBits.Count() < threshold {
 			return errors.Errorf("In block of slot %d ,the aggregate bitvector with length of %d only got a count of %d", b.Block().Slot(), threshold, syncAgg.SyncCommitteeBits.Count())
@@ -387,11 +343,6 @@ func checkSyncParticipation(conns []*grpc.ClientConn) error {
 		if err != nil {
 			return err
 		}
-		// Skip blocks with zero sync bits - these are typically empty/anomalous blocks
-		// where the proposer didn't receive sync committee contributions in time.
-		if syncAgg.SyncCommitteeBits.Count() == 0 {
-			continue
-		}
 		threshold := uint64(float64(syncAgg.SyncCommitteeBits.Len()) * expectedSyncParticipation)
 		if syncAgg.SyncCommitteeBits.Count() < threshold {
 			return errors.Errorf("In block of slot %d ,the aggregate bitvector with length of %d only got a count of %d", b.Block().Slot(), threshold, syncAgg.SyncCommitteeBits.Count())

testing/endtoend/minimal_builder_e2e_test.go

@@ -9,11 +9,11 @@ import (
 )
 
 func TestEndToEnd_MinimalConfig_WithBuilder(t *testing.T) {
-	r := e2eMinimal(t, types.InitForkCfg(version.Bellatrix, version.Electra, params.E2ETestConfig()), types.WithCheckpointSync(), types.WithBuilder(), types.WithBlobTxCount(2))
+	r := e2eMinimal(t, types.InitForkCfg(version.Bellatrix, version.Electra, params.E2ETestConfig()), types.WithCheckpointSync(), types.WithBuilder())
 	r.run()
 }
 
 func TestEndToEnd_MinimalConfig_WithBuilder_ValidatorRESTApi(t *testing.T) {
-	r := e2eMinimal(t, types.InitForkCfg(version.Bellatrix, version.Electra, params.E2ETestConfig()), types.WithCheckpointSync(), types.WithBuilder(), types.WithValidatorRESTApi(), types.WithBlobTxCount(2))
+	r := e2eMinimal(t, types.InitForkCfg(version.Bellatrix, version.Electra, params.E2ETestConfig()), types.WithCheckpointSync(), types.WithBuilder(), types.WithValidatorRESTApi())
 	r.run()
 }

testing/endtoend/types/types.go

@@ -68,14 +68,6 @@ func WithLargeBlobs() E2EConfigOpt {
 	}
 }
 
-// WithBlobTxCount sets the number of blob transactions sent per slot.
-// Default is 5 when not specified.
-func WithBlobTxCount(n int) E2EConfigOpt {
-	return func(cfg *E2EConfig) {
-		cfg.BlobTxCount = n
-	}
-}
-
 func WithSSZOnly() E2EConfigOpt {
 	return func(cfg *E2EConfig) {
 		if err := os.Setenv(params.EnvNameOverrideAccept, api.OctetStreamMediaType); err != nil {
@@ -116,7 +108,6 @@ type E2EConfig struct {
 	UseBeaconRestApi        bool
 	UseBuilder              bool
 	UseLargeBlobs           bool // Use large blob transactions (6 blobs per tx) for BPO testing
-	BlobTxCount             int  // Number of blob transactions per slot (0 means default of 5)
 	EpochsToRun             uint64
 	ExitEpoch               primitives.Epoch // Custom epoch for voluntary exit submission (0 means use default)
 	Seed                    int64