Add gossip for payload attestation

**What type of PR is this?**

Documentation

**What does this PR do? Why is it needed?**

* Move the ethspecify config from `/specrefs/.ethspecify` to
`/.ethspecify`.
* This allows developers to use inline specrefs (eg spec functions in
godoc comments).
* To do this, simply add a spec tag and run `ethspecify` to populate it.
* Clean up specref exceptions; organize by upgrade & put items in the
correct section.
* Update a few godoc comments to use the new inline specref feature.
* Update check-specrefs GitHub action so that it enforces up-to-date
godocs.
* Standardize specref naming; requiring a `#fork` tag for everything.
* Add new specrefs (which haven't been implemented yet) which were
missing.

**Acknowledgements**

- [x] I have read
[CONTRIBUTING.md](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md).
- [x] I have included a uniquely named [changelog fragment
file](https://github.com/prysmaticlabs/prysm/blob/develop/CONTRIBUTING.md#maintaining-changelogmd).
- [x] I have added a description with sufficient context for reviewers
to understand this PR.
- [x] I have tested that my changes work as expected and I added a
testing plan to the PR description (if applicable).

---------

Co-authored-by: james-prysm <90280386+james-prysm@users.noreply.github.com>

.ethspecify.yml

@@ -2,24 +2,38 @@ version: v1.7.0-alpha.1
 style: full
 
 specrefs:
-  search_root: ..
+  search_root: .
+  auto_standardize_names: true
+  auto_add_missing_entries: true
+  require_exceptions_have_fork: true
+
   files:
-    - configs.yml
-    - constants.yml
-    - containers.yml
-    - dataclasses.yml
-    - functions.yml
-    - presets.yml
+    - specrefs/configs.yml
+    - specrefs/constants.yml
+    - specrefs/containers.yml
+    - specrefs/dataclasses.yml
+    - specrefs/functions.yml
+    - specrefs/presets.yml
 
 exceptions:
   presets:
-    # Not implemented: gloas (future fork)
+    # gloas
     - BUILDER_PENDING_WITHDRAWALS_LIMIT#gloas
     - MAX_PAYLOAD_ATTESTATIONS#gloas
     - PTC_SIZE#gloas
 
   constants:
-    # Constants in the KZG library
+    # phase0
+    - BASIS_POINTS#phase0
+    - ENDIANNESS#phase0
+    - MAX_CONCURRENT_REQUESTS#phase0
+    - UINT64_MAX#phase0
+    - UINT64_MAX_SQRT#phase0
+    # altair
+    - PARTICIPATION_FLAG_WEIGHTS#altair
+    # bellatrix
+    - SAFE_SLOTS_TO_IMPORT_OPTIMISTICALLY#bellatrix
+    # deneb
     - BLS_MODULUS#deneb
     - BYTES_PER_COMMITMENT#deneb
     - BYTES_PER_FIELD_ELEMENT#deneb
@@ -33,18 +47,9 @@ exceptions:
     - PRIMITIVE_ROOT_OF_UNITY#deneb
     - RANDOM_CHALLENGE_KZG_BATCH_DOMAIN#deneb
     - RANDOM_CHALLENGE_KZG_CELL_BATCH_DOMAIN#fulu
-
-    # Not implemented
-    - BASIS_POINTS#phase0
-    - ENDIANNESS#phase0
-    - MAX_CONCURRENT_REQUESTS#phase0
-    - PARTICIPATION_FLAG_WEIGHTS#altair
-    - SAFE_SLOTS_TO_IMPORT_OPTIMISTICALLY#bellatrix
+    # fulu
     - UINT256_MAX#fulu
-    - UINT64_MAX#phase0
-    - UINT64_MAX_SQRT#phase0
-
-    # Not implemented: gloas (future fork)
+    # gloas
     - BUILDER_PAYMENT_THRESHOLD_DENOMINATOR#gloas
     - BUILDER_PAYMENT_THRESHOLD_NUMERATOR#gloas
     - BUILDER_WITHDRAWAL_PREFIX#gloas
@@ -61,61 +66,62 @@ exceptions:
     - PTC_TIMELINESS_INDEX#gloas
 
   configs:
-    # Not implemented: gloas (future fork)
+    # gloas
     - AGGREGATE_DUE_BPS_GLOAS#gloas
     - ATTESTATION_DUE_BPS_GLOAS#gloas
     - CONTRIBUTION_DUE_BPS_GLOAS#gloas
     - GLOAS_FORK_EPOCH#gloas
     - GLOAS_FORK_VERSION#gloas
     - MAX_REQUEST_PAYLOADS#gloas
+    - MIN_BUILDER_WITHDRAWABILITY_DELAY#gloas
     - PAYLOAD_ATTESTATION_DUE_BPS#gloas
     - SYNC_MESSAGE_DUE_BPS_GLOAS#gloas
-    - MIN_BUILDER_WITHDRAWABILITY_DELAY#gloas
 
   ssz_objects:
-    # Not implemented
+    # phase0
     - Eth1Block#phase0
-    - MatrixEntry#fulu
-
-    # Not implemented: capella
+    # capella
     - LightClientBootstrap#capella
     - LightClientFinalityUpdate#capella
     - LightClientOptimisticUpdate#capella
     - LightClientUpdate#capella
-
-    # Not implemented: gloas (future fork)
+    # fulu
+    - MatrixEntry#fulu
+    # gloas
     - BeaconBlockBody#gloas
     - BeaconState#gloas
+    - Builder#gloas
     - BuilderPendingPayment#gloas
     - BuilderPendingWithdrawal#gloas
     - DataColumnSidecar#gloas
-    - ExecutionPayloadEnvelope#gloas
     - ExecutionPayloadBid#gloas
+    - ExecutionPayloadEnvelope#gloas
     - ForkChoiceNode#gloas
     - IndexedPayloadAttestation#gloas
     - PayloadAttestation#gloas
     - PayloadAttestationData#gloas
     - PayloadAttestationMessage#gloas
-    - SignedExecutionPayloadEnvelope#gloas
-    - SignedExecutionPayloadBid#gloas
-    - Builder#gloas
     - ProposerPreferences#gloas
+    - SignedExecutionPayloadBid#gloas
+    - SignedExecutionPayloadEnvelope#gloas
     - SignedProposerPreferences#gloas
 
   dataclasses:
-    # Not implemented
-    - BlobParameters#fulu
-    - ExpectedWithdrawals#capella
-    - ExpectedWithdrawals#electra
+    # phase0
     - LatestMessage#phase0
-    - LightClientStore#altair
-    - OptimisticStore#bellatrix
     - Store#phase0
-
-    # Not implemented: capella
+    # altair
+    - LightClientStore#altair
+    # bellatrix
+    - OptimisticStore#bellatrix
+    # capella
+    - ExpectedWithdrawals#capella
     - LightClientStore#capella
-
-    # Not implemented: gloas (future fork)
+    # electra
+    - ExpectedWithdrawals#electra
+    # fulu
+    - BlobParameters#fulu
+    # gloas
     - ExpectedWithdrawals#gloas
     - LatestMessage#gloas
     - Store#gloas
@@ -175,7 +181,12 @@ exceptions:
     - verify_cell_kzg_proof_batch#fulu
     - verify_cell_kzg_proof_batch_impl#fulu
 
-    # Not implemented: phase0
+    # phase0
+    - update_proposer_boost_root#phase0
+    - is_proposer_equivocation#phase0
+    - record_block_timeliness#phase0
+    - compute_proposer_score#phase0
+    - get_attestation_score#phase0
     - calculate_committee_fraction#phase0
     - compute_fork_version#phase0
     - compute_pulled_up_tip#phase0
@@ -221,8 +232,7 @@ exceptions:
     - validate_on_attestation#phase0
     - validate_target_epoch_against_current_time#phase0
     - xor#phase0
-
-    # Not implemented: altair
+    # altair
     - compute_merkle_proof#altair
     - compute_sync_committee_period_at_slot#altair
     - get_contribution_and_proof#altair
@@ -244,27 +254,29 @@ exceptions:
     - process_sync_committee_contributions#altair
     - set_or_append_list#altair
     - validate_light_client_update#altair
-
-    # Not implemented: bellatrix
+    # bellatrix
     - get_execution_payload#bellatrix
     - is_merge_transition_block#bellatrix
     - is_optimistic_candidate_block#bellatrix
     - latest_verified_ancestor#bellatrix
     - prepare_execution_payload#bellatrix
-
-    # Not implemented: capella
+    # capella
+    - apply_withdrawals#capella
+    - get_balance_after_withdrawals#capella
     - get_lc_execution_root#capella
+    - get_validators_sweep_withdrawals#capella
     - is_valid_light_client_header#capella
     - prepare_execution_payload#capella
     - process_epoch#capella
+    - update_next_withdrawal_index#capella
+    - update_next_withdrawal_validator_index#capella
     - upgrade_lc_bootstrap_to_capella#capella
     - upgrade_lc_finality_update_to_capella#capella
     - upgrade_lc_header_to_capella#capella
     - upgrade_lc_optimistic_update_to_capella#capella
     - upgrade_lc_store_to_capella#capella
     - upgrade_lc_update_to_capella#capella
-
-    # Not implemented: deneb
+    # deneb
     - get_lc_execution_root#deneb
     - is_valid_light_client_header#deneb
     - prepare_execution_payload#deneb
@@ -274,33 +286,34 @@ exceptions:
     - upgrade_lc_optimistic_update_to_deneb#deneb
     - upgrade_lc_store_to_deneb#deneb
     - upgrade_lc_update_to_deneb#deneb
-
-    # Not implemented: electra
+    # electra
     - compute_weak_subjectivity_period#electra
     - current_sync_committee_gindex_at_slot#electra
     - finalized_root_gindex_at_slot#electra
     - get_eth1_vote#electra
     - get_lc_execution_root#electra
+    - get_pending_partial_withdrawals#electra
+    - get_validators_sweep_withdrawals#electra
     - is_compounding_withdrawal_credential#electra
+    - is_eligible_for_partial_withdrawals#electra
     - is_within_weak_subjectivity_period#electra
     - next_sync_committee_gindex_at_slot#electra
     - normalize_merkle_branch#electra
     - prepare_execution_payload#electra
+    - update_pending_partial_withdrawals#electra
     - upgrade_lc_bootstrap_to_electra#electra
     - upgrade_lc_finality_update_to_electra#electra
     - upgrade_lc_header_to_electra#electra
     - upgrade_lc_optimistic_update_to_electra#electra
     - upgrade_lc_store_to_electra#electra
     - upgrade_lc_update_to_electra#electra
-
-    # Not implemented: fulu
+    # fulu
     - compute_matrix#fulu
     - get_blob_parameters#fulu
     - get_data_column_sidecars_from_block#fulu
     - get_data_column_sidecars_from_column_sidecar#fulu
     - recover_matrix#fulu
-
-    # Not implemented: gloas (future fork)
+    # gloas
     - compute_balance_weighted_acceptance#gloas
     - compute_balance_weighted_selection#gloas
     - compute_fork_version#gloas
@@ -368,49 +381,36 @@ exceptions:
     - verify_execution_payload_bid_signature#gloas
     - add_builder_to_registry#gloas
     - apply_deposit_for_builder#gloas
-    - apply_withdrawals#capella
     - apply_withdrawals#gloas
     - can_builder_cover_bid#gloas
-    - compute_proposer_score#phase0
     - convert_builder_index_to_validator_index#gloas
     - convert_validator_index_to_builder_index#gloas
     - get_attestation_score#gloas
-    - get_attestation_score#phase0
-    - get_balance_after_withdrawals#capella
     - get_builder_from_deposit#gloas
     - get_builder_withdrawals#gloas
     - get_builders_sweep_withdrawals#gloas
     - get_index_for_new_builder#gloas
     - get_pending_balance_to_withdraw_for_builder#gloas
-    - get_pending_partial_withdrawals#electra
     - get_proposer_preferences_signature#gloas
     - get_upcoming_proposal_slots#gloas
-    - get_validators_sweep_withdrawals#capella
-    - get_validators_sweep_withdrawals#electra
     - initiate_builder_exit#gloas
     - is_active_builder#gloas
     - is_builder_index#gloas
-    - is_eligible_for_partial_withdrawals#electra
     - is_head_late#gloas
     - is_head_weak#gloas
     - is_parent_strong#gloas
-    - is_proposer_equivocation#phase0
     - is_valid_proposal_slot#gloas
     - process_deposit_request#gloas
     - process_voluntary_exit#gloas
     - record_block_timeliness#gloas
-    - record_block_timeliness#phase0
     - should_apply_proposer_boost#gloas
     - update_builder_pending_withdrawals#gloas
     - update_next_withdrawal_builder_index#gloas
-    - update_next_withdrawal_index#capella
-    - update_next_withdrawal_validator_index#capella
     - update_payload_expected_withdrawals#gloas
-    - update_pending_partial_withdrawals#electra
     - update_proposer_boost_root#gloas
-    - update_proposer_boost_root#phase0
 
   presets:
+    # gloas
     - BUILDER_PENDING_WITHDRAWALS_LIMIT#gloas
     - BUILDER_REGISTRY_LIMIT#gloas
     - MAX_BUILDERS_PER_WITHDRAWALS_SWEEP#gloas

.github/workflows/check-specrefs.yml

@@ -12,11 +12,11 @@ jobs:
     - name: Check version consistency
       run: |
         WORKSPACE_VERSION=$(grep 'consensus_spec_version = ' WORKSPACE | sed 's/.*"\(.*\)"/\1/')
-        ETHSPECIFY_VERSION=$(grep '^version:' specrefs/.ethspecify.yml | sed 's/version: //')
+        ETHSPECIFY_VERSION=$(grep '^version:' .ethspecify.yml | sed 's/version: //')
         if [ "$WORKSPACE_VERSION" != "$ETHSPECIFY_VERSION" ]; then
           echo "Version mismatch between WORKSPACE and ethspecify"
           echo "  WORKSPACE: $WORKSPACE_VERSION"
-          echo "  specrefs/.ethspecify.yml: $ETHSPECIFY_VERSION"
+          echo "  .ethspecify.yml: $ETHSPECIFY_VERSION"
           exit 1
         else
           echo "Versions match: $WORKSPACE_VERSION"
@@ -26,7 +26,7 @@ jobs:
       run: python3 -mpip install ethspecify
 
     - name: Update spec references
-      run: ethspecify process --path=specrefs
+      run: ethspecify
 
     - name: Check for differences
       run: |
@@ -40,4 +40,4 @@ jobs:
         fi
 
     - name: Check spec references
-      run: ethspecify check --path=specrefs
+      run: ethspecify check

.github/workflows/go.yml

@@ -2,7 +2,7 @@ name: Go
 
 on:
   push:
-    branches: [ master ]
+    branches: [ master, develop ]
   pull_request:
     branches: [ '*' ]
   merge_group:

.golangci.yml

@@ -33,9 +33,8 @@ formatters:
     generated: lax
     paths:
       - validator/web/site_data.go
-      - .*_test.go
       - proto
       - tools/analyzers
       - third_party$
       - builtin$
-      - examples$
+      - examples$

api/fallback/BUILD.bazel

@@ -0,0 +1,19 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "fallback.go",
+        "log.go",
+    ],
+    importpath = "github.com/OffchainLabs/prysm/v7/api/fallback",
+    visibility = ["//visibility:public"],
+    deps = ["@com_github_sirupsen_logrus//:go_default_library"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["fallback_test.go"],
+    embed = [":go_default_library"],
+    deps = ["//testing/assert:go_default_library"],
+)

api/fallback/fallback.go

@@ -0,0 +1,66 @@
+package fallback
+
+import (
+	"context"
+
+	"github.com/sirupsen/logrus"
+)
+
+// HostProvider is the subset of connection-provider methods that EnsureReady
+// needs. Both grpc.GrpcConnectionProvider and rest.RestConnectionProvider
+// satisfy this interface.
+type HostProvider interface {
+	Hosts() []string
+	CurrentHost() string
+	SwitchHost(index int) error
+}
+
+// ReadyChecker can report whether the current endpoint is ready.
+// iface.NodeClient satisfies this implicitly.
+type ReadyChecker interface {
+	IsReady(ctx context.Context) bool
+}
+
+// EnsureReady iterates through the configured hosts and returns true as soon as
+// one responds as ready. It starts from the provider's current host and wraps
+// around using modular arithmetic, performing failover when a host is not ready.
+func EnsureReady(ctx context.Context, provider HostProvider, checker ReadyChecker) bool {
+	hosts := provider.Hosts()
+	numHosts := len(hosts)
+	startingHost := provider.CurrentHost()
+	var attemptedHosts []string
+
+	// Find current index
+	currentIdx := 0
+	for i, h := range hosts {
+		if h == startingHost {
+			currentIdx = i
+			break
+		}
+	}
+
+	for i := range numHosts {
+		if checker.IsReady(ctx) {
+			if len(attemptedHosts) > 0 {
+				log.WithFields(logrus.Fields{
+					"previous": startingHost,
+					"current":  provider.CurrentHost(),
+					"tried":    attemptedHosts,
+				}).Info("Switched to responsive beacon node")
+			}
+			return true
+		}
+		attemptedHosts = append(attemptedHosts, provider.CurrentHost())
+
+		// Try next host if not the last iteration
+		if i < numHosts-1 {
+			nextIdx := (currentIdx + i + 1) % numHosts
+			if err := provider.SwitchHost(nextIdx); err != nil {
+				log.WithError(err).Error("Failed to switch host")
+			}
+		}
+	}
+
+	log.WithField("tried", attemptedHosts).Warn("No responsive beacon node found")
+	return false
+}

api/fallback/fallback_test.go

@@ -0,0 +1,94 @@
+package fallback
+
+import (
+	"context"
+	"testing"
+
+	"github.com/OffchainLabs/prysm/v7/testing/assert"
+)
+
+// mockHostProvider is a minimal HostProvider for unit tests.
+type mockHostProvider struct {
+	hosts     []string
+	hostIndex int
+}
+
+func (m *mockHostProvider) Hosts() []string { return m.hosts }
+func (m *mockHostProvider) CurrentHost() string {
+	return m.hosts[m.hostIndex%len(m.hosts)]
+}
+func (m *mockHostProvider) SwitchHost(index int) error { m.hostIndex = index; return nil }
+
+// mockReadyChecker records per-call IsReady results in sequence.
+type mockReadyChecker struct {
+	results []bool
+	idx     int
+}
+
+func (m *mockReadyChecker) IsReady(_ context.Context) bool {
+	if m.idx >= len(m.results) {
+		return false
+	}
+	r := m.results[m.idx]
+	m.idx++
+	return r
+}
+
+func TestEnsureReady_SingleHostReady(t *testing.T) {
+	provider := &mockHostProvider{hosts: []string{"http://host1:3500"}, hostIndex: 0}
+	checker := &mockReadyChecker{results: []bool{true}}
+	assert.Equal(t, true, EnsureReady(t.Context(), provider, checker))
+	assert.Equal(t, 0, provider.hostIndex)
+}
+
+func TestEnsureReady_SingleHostNotReady(t *testing.T) {
+	provider := &mockHostProvider{hosts: []string{"http://host1:3500"}, hostIndex: 0}
+	checker := &mockReadyChecker{results: []bool{false}}
+	assert.Equal(t, false, EnsureReady(t.Context(), provider, checker))
+}
+
+func TestEnsureReady_SingleHostError(t *testing.T) {
+	provider := &mockHostProvider{hosts: []string{"http://host1:3500"}, hostIndex: 0}
+	checker := &mockReadyChecker{results: []bool{false}}
+	assert.Equal(t, false, EnsureReady(t.Context(), provider, checker))
+}
+
+func TestEnsureReady_MultipleHostsFirstReady(t *testing.T) {
+	provider := &mockHostProvider{
+		hosts:     []string{"http://host1:3500", "http://host2:3500"},
+		hostIndex: 0,
+	}
+	checker := &mockReadyChecker{results: []bool{true}}
+	assert.Equal(t, true, EnsureReady(t.Context(), provider, checker))
+	assert.Equal(t, 0, provider.hostIndex)
+}
+
+func TestEnsureReady_MultipleHostsFailoverToSecond(t *testing.T) {
+	provider := &mockHostProvider{
+		hosts:     []string{"http://host1:3500", "http://host2:3500"},
+		hostIndex: 0,
+	}
+	checker := &mockReadyChecker{results: []bool{false, true}}
+	assert.Equal(t, true, EnsureReady(t.Context(), provider, checker))
+	assert.Equal(t, 1, provider.hostIndex)
+}
+
+func TestEnsureReady_MultipleHostsNoneReady(t *testing.T) {
+	provider := &mockHostProvider{
+		hosts:     []string{"http://host1:3500", "http://host2:3500", "http://host3:3500"},
+		hostIndex: 0,
+	}
+	checker := &mockReadyChecker{results: []bool{false, false, false}}
+	assert.Equal(t, false, EnsureReady(t.Context(), provider, checker))
+}
+
+func TestEnsureReady_WrapAroundFromNonZeroIndex(t *testing.T) {
+	provider := &mockHostProvider{
+		hosts:     []string{"http://host0:3500", "http://host1:3500", "http://host2:3500"},
+		hostIndex: 1,
+	}
+	// host1 (start) fails, host2 fails, host0 succeeds
+	checker := &mockReadyChecker{results: []bool{false, false, true}}
+	assert.Equal(t, true, EnsureReady(t.Context(), provider, checker))
+	assert.Equal(t, 0, provider.hostIndex)
+}

api/fallback/log.go

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

api/grpc/BUILD.bazel

@@ -3,13 +3,16 @@ load("@prysm//tools/go:def.bzl", "go_library", "go_test")
 go_library(
     name = "go_default_library",
     srcs = [
+        "grpc_connection_provider.go",
         "grpcutils.go",
         "log.go",
+        "mock_grpc_provider.go",
         "parameters.go",
     ],
     importpath = "github.com/OffchainLabs/prysm/v7/api/grpc",
     visibility = ["//visibility:public"],
     deps = [
+        "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//metadata:go_default_library",
@@ -18,12 +21,17 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["grpcutils_test.go"],
+    srcs = [
+        "grpc_connection_provider_test.go",
+        "grpcutils_test.go",
+    ],
     embed = [":go_default_library"],
     deps = [
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
+        "@org_golang_google_grpc//:go_default_library",
+        "@org_golang_google_grpc//credentials/insecure:go_default_library",
         "@org_golang_google_grpc//metadata:go_default_library",
     ],
 )

api/grpc/grpc_connection_provider.go

@@ -0,0 +1,186 @@
+package grpc
+
+import (
+	"context"
+	"strings"
+	"sync"
+
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+)
+
+// GrpcConnectionProvider manages gRPC connections for failover support.
+// It allows switching between different beacon node endpoints when the current one becomes unavailable.
+// Only one connection is maintained at a time - when switching hosts, the old connection is closed.
+type GrpcConnectionProvider interface {
+	// CurrentConn returns the currently active gRPC connection.
+	// The connection is created lazily on first call.
+	// Returns nil if the provider has been closed.
+	CurrentConn() *grpc.ClientConn
+	// CurrentHost returns the address of the currently active endpoint.
+	CurrentHost() string
+	// Hosts returns all configured endpoint addresses.
+	Hosts() []string
+	// SwitchHost switches to the endpoint at the given index.
+	// The new connection is created lazily on next CurrentConn() call.
+	SwitchHost(index int) error
+	// ConnectionCounter returns a monotonically increasing counter that increments
+	// each time SwitchHost changes the active endpoint. This allows consumers to
+	// detect connection changes even when the host string returns to a previous value
+	// (e.g., host0 → host1 → host0).
+	ConnectionCounter() uint64
+	// Close closes the current connection.
+	Close()
+}
+
+type grpcConnectionProvider struct {
+	// Immutable after construction - no lock needed for reads
+	endpoints []string
+	ctx       context.Context
+	dialOpts  []grpc.DialOption
+
+	// Current connection state (protected by mutex)
+	currentIndex uint64
+	conn         *grpc.ClientConn
+	connCounter  uint64
+
+	mu     sync.Mutex
+	closed bool
+}
+
+// NewGrpcConnectionProvider creates a new connection provider that manages gRPC connections.
+// The endpoint parameter can be a comma-separated list of addresses (e.g., "host1:4000,host2:4000").
+// Only one connection is maintained at a time, created lazily on first use.
+func NewGrpcConnectionProvider(
+	ctx context.Context,
+	endpoint string,
+	dialOpts []grpc.DialOption,
+) (GrpcConnectionProvider, error) {
+	endpoints := parseEndpoints(endpoint)
+	if len(endpoints) == 0 {
+		return nil, errors.New("no gRPC endpoints provided")
+	}
+
+	log.WithFields(logrus.Fields{
+		"endpoints": endpoints,
+		"count":     len(endpoints),
+	}).Info("Initialized gRPC connection provider")
+
+	return &grpcConnectionProvider{
+		endpoints: endpoints,
+		ctx:       ctx,
+		dialOpts:  dialOpts,
+	}, nil
+}
+
+// parseEndpoints splits a comma-separated endpoint string into individual endpoints.
+func parseEndpoints(endpoint string) []string {
+	if endpoint == "" {
+		return nil
+	}
+	endpoints := make([]string, 0, 1)
+	for p := range strings.SplitSeq(endpoint, ",") {
+		if p = strings.TrimSpace(p); p != "" {
+			endpoints = append(endpoints, p)
+		}
+	}
+	return endpoints
+}
+
+func (p *grpcConnectionProvider) CurrentConn() *grpc.ClientConn {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if p.closed {
+		return nil
+	}
+
+	// Return existing connection if available
+	if p.conn != nil {
+		return p.conn
+	}
+
+	// Create connection lazily
+	ep := p.endpoints[p.currentIndex]
+	conn, err := grpc.DialContext(p.ctx, ep, p.dialOpts...)
+	if err != nil {
+		log.WithError(err).WithField("endpoint", ep).Error("Failed to create gRPC connection")
+		return nil
+	}
+
+	p.conn = conn
+	log.WithField("endpoint", ep).Debug("Created gRPC connection")
+	return conn
+}
+
+func (p *grpcConnectionProvider) CurrentHost() string {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	return p.endpoints[p.currentIndex]
+}
+
+func (p *grpcConnectionProvider) Hosts() []string {
+	// Return a copy to maintain immutability
+	hosts := make([]string, len(p.endpoints))
+	copy(hosts, p.endpoints)
+	return hosts
+}
+
+func (p *grpcConnectionProvider) SwitchHost(index int) error {
+	if index < 0 || index >= len(p.endpoints) {
+		return errors.Errorf("invalid host index %d, must be between 0 and %d", index, len(p.endpoints)-1)
+	}
+
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if uint64(index) == p.currentIndex {
+		return nil // Already on this host
+	}
+
+	oldHost := p.endpoints[p.currentIndex]
+	oldConn := p.conn
+
+	p.conn = nil // Clear immediately - new connection created lazily
+	p.currentIndex = uint64(index)
+	p.connCounter++
+
+	// Close old connection asynchronously to avoid blocking the caller
+	if oldConn != nil {
+		go func() {
+			if err := oldConn.Close(); err != nil {
+				log.WithError(err).WithField("endpoint", oldHost).Debug("Failed to close previous connection")
+			}
+		}()
+	}
+
+	log.WithFields(logrus.Fields{
+		"previousHost": oldHost,
+		"newHost":      p.endpoints[index],
+	}).Debug("Switched gRPC endpoint")
+	return nil
+}
+
+func (p *grpcConnectionProvider) ConnectionCounter() uint64 {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	return p.connCounter
+}
+
+func (p *grpcConnectionProvider) Close() {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	if p.closed {
+		return
+	}
+	p.closed = true
+
+	if p.conn != nil {
+		if err := p.conn.Close(); err != nil {
+			log.WithError(err).WithField("endpoint", p.endpoints[p.currentIndex]).Debug("Failed to close gRPC connection")
+		}
+		p.conn = nil
+	}
+}

api/grpc/grpc_connection_provider_test.go

@@ -0,0 +1,207 @@
+package grpc
+
+import (
+	"context"
+	"net"
+	"reflect"
+	"strings"
+	"testing"
+
+	"github.com/OffchainLabs/prysm/v7/testing/assert"
+	"github.com/OffchainLabs/prysm/v7/testing/require"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+func TestParseEndpoints(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected []string
+	}{
+		{"single endpoint", "localhost:4000", []string{"localhost:4000"}},
+		{"multiple endpoints", "host1:4000,host2:4000,host3:4000", []string{"host1:4000", "host2:4000", "host3:4000"}},
+		{"endpoints with spaces", "host1:4000, host2:4000 , host3:4000", []string{"host1:4000", "host2:4000", "host3:4000"}},
+		{"empty string", "", nil},
+		{"only commas", ",,,", []string{}},
+		{"trailing comma", "host1:4000,host2:4000,", []string{"host1:4000", "host2:4000"}},
+		{"leading comma", ",host1:4000,host2:4000", []string{"host1:4000", "host2:4000"}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := parseEndpoints(tt.input)
+			if !reflect.DeepEqual(tt.expected, got) {
+				t.Errorf("parseEndpoints(%q) = %v, want %v", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestNewGrpcConnectionProvider_Errors(t *testing.T) {
+	t.Run("no endpoints", func(t *testing.T) {
+		dialOpts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
+		_, err := NewGrpcConnectionProvider(context.Background(), "", dialOpts)
+		require.ErrorContains(t, "no gRPC endpoints provided", err)
+	})
+}
+
+func TestGrpcConnectionProvider_LazyConnection(t *testing.T) {
+	// Start only one server but configure provider with two endpoints
+	lis, err := net.Listen("tcp", "127.0.0.1:0")
+	require.NoError(t, err)
+	server := grpc.NewServer()
+	go func() { _ = server.Serve(lis) }()
+	defer server.Stop()
+
+	validAddr := lis.Addr().String()
+	invalidAddr := "127.0.0.1:1" // Port 1 is unlikely to be listening
+
+	// Provider should succeed even though second endpoint is invalid (lazy connections)
+	endpoint := validAddr + "," + invalidAddr
+	ctx := context.Background()
+	dialOpts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
+	provider, err := NewGrpcConnectionProvider(ctx, endpoint, dialOpts)
+	require.NoError(t, err, "Provider creation should succeed with lazy connections")
+	defer func() { provider.Close() }()
+
+	// First endpoint should work
+	conn := provider.CurrentConn()
+	assert.NotNil(t, conn, "First connection should be created lazily")
+}
+
+func TestGrpcConnectionProvider_SingleConnectionModel(t *testing.T) {
+	// Create provider with 3 endpoints
+	var addrs []string
+	var servers []*grpc.Server
+
+	for range 3 {
+		lis, err := net.Listen("tcp", "127.0.0.1:0")
+		require.NoError(t, err)
+		server := grpc.NewServer()
+		go func() { _ = server.Serve(lis) }()
+		addrs = append(addrs, lis.Addr().String())
+		servers = append(servers, server)
+	}
+	defer func() {
+		for _, s := range servers {
+			s.Stop()
+		}
+	}()
+
+	endpoint := strings.Join(addrs, ",")
+	ctx := context.Background()
+	dialOpts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
+	provider, err := NewGrpcConnectionProvider(ctx, endpoint, dialOpts)
+	require.NoError(t, err)
+	defer func() { provider.Close() }()
+
+	// Access the internal state to verify single connection behavior
+	p := provider.(*grpcConnectionProvider)
+
+	// Initially no connection
+	p.mu.Lock()
+	assert.Equal(t, (*grpc.ClientConn)(nil), p.conn, "Connection should be nil before access")
+	p.mu.Unlock()
+
+	// Access connection - should create one
+	conn0 := provider.CurrentConn()
+	assert.NotNil(t, conn0)
+
+	p.mu.Lock()
+	assert.NotNil(t, p.conn, "Connection should be created after CurrentConn()")
+	firstConn := p.conn
+	p.mu.Unlock()
+
+	// Call CurrentConn again - should return same connection
+	conn0Again := provider.CurrentConn()
+	assert.Equal(t, conn0, conn0Again, "Should return same connection")
+
+	// Switch to different host - old connection should be closed, new one created lazily
+	require.NoError(t, provider.SwitchHost(1))
+
+	p.mu.Lock()
+	assert.Equal(t, (*grpc.ClientConn)(nil), p.conn, "Connection should be nil after SwitchHost (lazy)")
+	p.mu.Unlock()
+
+	// Get new connection
+	conn1 := provider.CurrentConn()
+	assert.NotNil(t, conn1)
+	assert.NotEqual(t, firstConn, conn1, "Should be a different connection after switching hosts")
+}
+
+// testProvider creates a provider with n test servers and returns cleanup function.
+func testProvider(t *testing.T, n int) (GrpcConnectionProvider, []string, func()) {
+	var addrs []string
+	var cleanups []func()
+
+	for range n {
+		lis, err := net.Listen("tcp", "127.0.0.1:0")
+		require.NoError(t, err)
+		server := grpc.NewServer()
+		go func() { _ = server.Serve(lis) }()
+		addrs = append(addrs, lis.Addr().String())
+		cleanups = append(cleanups, server.Stop)
+	}
+
+	endpoint := strings.Join(addrs, ",")
+
+	ctx := context.Background()
+	dialOpts := []grpc.DialOption{grpc.WithTransportCredentials(insecure.NewCredentials())}
+	provider, err := NewGrpcConnectionProvider(ctx, endpoint, dialOpts)
+	require.NoError(t, err)
+
+	cleanup := func() {
+		provider.Close()
+		for _, c := range cleanups {
+			c()
+		}
+	}
+	return provider, addrs, cleanup
+}
+
+func TestGrpcConnectionProvider(t *testing.T) {
+	provider, addrs, cleanup := testProvider(t, 3)
+	defer cleanup()
+
+	t.Run("initial state", func(t *testing.T) {
+		assert.Equal(t, 3, len(provider.Hosts()))
+		assert.Equal(t, addrs[0], provider.CurrentHost())
+		assert.NotNil(t, provider.CurrentConn())
+	})
+
+	t.Run("SwitchHost", func(t *testing.T) {
+		require.NoError(t, provider.SwitchHost(1))
+		assert.Equal(t, addrs[1], provider.CurrentHost())
+		assert.NotNil(t, provider.CurrentConn()) // New connection created lazily
+		require.NoError(t, provider.SwitchHost(0))
+		assert.Equal(t, addrs[0], provider.CurrentHost())
+		require.ErrorContains(t, "invalid host index", provider.SwitchHost(-1))
+		require.ErrorContains(t, "invalid host index", provider.SwitchHost(3))
+	})
+
+	t.Run("SwitchHost circular", func(t *testing.T) {
+		// Test round-robin style switching using SwitchHost with manual index
+		indices := []int{1, 2, 0, 1} // Simulate circular switching
+		for i, idx := range indices {
+			require.NoError(t, provider.SwitchHost(idx))
+			assert.Equal(t, addrs[idx], provider.CurrentHost(), "iteration %d", i)
+		}
+	})
+
+	t.Run("Hosts returns copy", func(t *testing.T) {
+		hosts := provider.Hosts()
+		original := hosts[0]
+		hosts[0] = "modified"
+		assert.Equal(t, original, provider.Hosts()[0])
+	})
+}
+
+func TestGrpcConnectionProvider_Close(t *testing.T) {
+	provider, _, cleanup := testProvider(t, 1)
+	defer cleanup()
+
+	assert.NotNil(t, provider.CurrentConn())
+	provider.Close()
+	assert.Equal(t, (*grpc.ClientConn)(nil), provider.CurrentConn())
+	provider.Close() // Double close is safe
+}

api/grpc/mock_grpc_provider.go

@@ -0,0 +1,27 @@
+package grpc
+
+import "google.golang.org/grpc"
+
+// MockGrpcProvider implements GrpcConnectionProvider for testing.
+type MockGrpcProvider struct {
+	MockConn     *grpc.ClientConn
+	MockHosts    []string
+	CurrentIndex int
+	ConnCounter  uint64
+}
+
+func (m *MockGrpcProvider) CurrentConn() *grpc.ClientConn { return m.MockConn }
+func (m *MockGrpcProvider) CurrentHost() string {
+	if len(m.MockHosts) > 0 {
+		return m.MockHosts[m.CurrentIndex]
+	}
+	return ""
+}
+func (m *MockGrpcProvider) Hosts() []string { return m.MockHosts }
+func (m *MockGrpcProvider) SwitchHost(idx int) error {
+	m.CurrentIndex = idx
+	m.ConnCounter++
+	return nil
+}
+func (m *MockGrpcProvider) ConnectionCounter() uint64 { return m.ConnCounter }
+func (m *MockGrpcProvider) Close()                    {}

api/rest/BUILD.bazel

@@ -0,0 +1,34 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "log.go",
+        "mock_rest_provider.go",
+        "rest_connection_provider.go",
+        "rest_handler.go",
+    ],
+    importpath = "github.com/OffchainLabs/prysm/v7/api/rest",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api:go_default_library",
+        "//api/apiutil:go_default_library",
+        "//api/client:go_default_library",
+        "//config/params:go_default_library",
+        "//network/httputil:go_default_library",
+        "//runtime/version:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+        "@io_opentelemetry_go_contrib_instrumentation_net_http_otelhttp//:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["rest_connection_provider_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
+    ],
+)

api/rest/log.go

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

api/rest/mock_rest_provider.go

@@ -0,0 +1,46 @@
+package rest
+
+import (
+	"bytes"
+	"context"
+	"net/http"
+)
+
+// MockRestProvider implements RestConnectionProvider for testing.
+type MockRestProvider struct {
+	MockClient  *http.Client
+	MockHandler Handler
+	MockHosts   []string
+	HostIndex   int
+}
+
+func (m *MockRestProvider) HttpClient() *http.Client { return m.MockClient }
+func (m *MockRestProvider) Handler() Handler         { return m.MockHandler }
+func (m *MockRestProvider) CurrentHost() string {
+	if len(m.MockHosts) > 0 {
+		return m.MockHosts[m.HostIndex%len(m.MockHosts)]
+	}
+	return ""
+}
+func (m *MockRestProvider) Hosts() []string            { return m.MockHosts }
+func (m *MockRestProvider) SwitchHost(index int) error { m.HostIndex = index; return nil }
+
+// MockHandler implements Handler for testing.
+type MockHandler struct {
+	MockHost string
+}
+
+func (m *MockHandler) Get(_ context.Context, _ string, _ any) error { return nil }
+func (m *MockHandler) GetStatusCode(_ context.Context, _ string) (int, error) {
+	return http.StatusOK, nil
+}
+func (m *MockHandler) GetSSZ(_ context.Context, _ string) ([]byte, http.Header, error) {
+	return nil, nil, nil
+}
+func (m *MockHandler) Post(_ context.Context, _ string, _ map[string]string, _ *bytes.Buffer, _ any) error {
+	return nil
+}
+func (m *MockHandler) PostSSZ(_ context.Context, _ string, _ map[string]string, _ *bytes.Buffer) ([]byte, http.Header, error) {
+	return nil, nil, nil
+}
+func (m *MockHandler) Host() string { return m.MockHost }

api/rest/rest_connection_provider.go

@@ -0,0 +1,158 @@
+package rest
+
+import (
+	"net/http"
+	"strings"
+	"sync/atomic"
+	"time"
+
+	"github.com/OffchainLabs/prysm/v7/api/client"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+	"go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp"
+)
+
+// RestConnectionProvider manages HTTP client configuration for REST API with failover support.
+// It allows switching between different beacon node REST endpoints when the current one becomes unavailable.
+type RestConnectionProvider interface {
+	// HttpClient returns the configured HTTP client with headers, timeout, and optional tracing.
+	HttpClient() *http.Client
+	// Handler returns the REST handler for making API requests.
+	Handler() Handler
+	// CurrentHost returns the current REST API endpoint URL.
+	CurrentHost() string
+	// Hosts returns all configured REST API endpoint URLs.
+	Hosts() []string
+	// SwitchHost switches to the endpoint at the given index.
+	SwitchHost(index int) error
+}
+
+// RestConnectionProviderOption is a functional option for configuring the REST connection provider.
+type RestConnectionProviderOption func(*restConnectionProvider)
+
+// WithHttpTimeout sets the HTTP client timeout.
+func WithHttpTimeout(timeout time.Duration) RestConnectionProviderOption {
+	return func(p *restConnectionProvider) {
+		p.timeout = timeout
+	}
+}
+
+// WithHttpHeaders sets custom HTTP headers to include in all requests.
+func WithHttpHeaders(headers map[string][]string) RestConnectionProviderOption {
+	return func(p *restConnectionProvider) {
+		p.headers = headers
+	}
+}
+
+// WithTracing enables OpenTelemetry tracing for HTTP requests.
+func WithTracing() RestConnectionProviderOption {
+	return func(p *restConnectionProvider) {
+		p.enableTracing = true
+	}
+}
+
+type restConnectionProvider struct {
+	endpoints     []string
+	httpClient    *http.Client
+	restHandler   *handler
+	currentIndex  atomic.Uint64
+	timeout       time.Duration
+	headers       map[string][]string
+	enableTracing bool
+}
+
+// NewRestConnectionProvider creates a new REST connection provider that manages HTTP client configuration.
+// The endpoint parameter can be a comma-separated list of URLs (e.g., "http://host1:3500,http://host2:3500").
+func NewRestConnectionProvider(endpoint string, opts ...RestConnectionProviderOption) (RestConnectionProvider, error) {
+	endpoints := parseEndpoints(endpoint)
+	if len(endpoints) == 0 {
+		return nil, errors.New("no REST API endpoints provided")
+	}
+
+	p := &restConnectionProvider{
+		endpoints: endpoints,
+	}
+
+	for _, opt := range opts {
+		opt(p)
+	}
+
+	// Build the HTTP transport chain
+	var transport http.RoundTripper = http.DefaultTransport
+
+	// Add custom headers if configured
+	if len(p.headers) > 0 {
+		transport = client.NewCustomHeadersTransport(transport, p.headers)
+	}
+
+	// Add tracing if enabled
+	if p.enableTracing {
+		transport = otelhttp.NewTransport(transport)
+	}
+
+	p.httpClient = &http.Client{
+		Timeout:   p.timeout,
+		Transport: transport,
+	}
+
+	// Create the REST handler with the HTTP client and initial host
+	p.restHandler = newHandler(*p.httpClient, endpoints[0])
+
+	log.WithFields(logrus.Fields{
+		"endpoints": endpoints,
+		"count":     len(endpoints),
+	}).Info("Initialized REST connection provider")
+
+	return p, nil
+}
+
+// parseEndpoints splits a comma-separated endpoint string into individual endpoints.
+func parseEndpoints(endpoint string) []string {
+	if endpoint == "" {
+		return nil
+	}
+	endpoints := make([]string, 0, 1)
+	for p := range strings.SplitSeq(endpoint, ",") {
+		if p = strings.TrimSpace(p); p != "" {
+			endpoints = append(endpoints, p)
+		}
+	}
+	return endpoints
+}
+
+func (p *restConnectionProvider) HttpClient() *http.Client {
+	return p.httpClient
+}
+
+func (p *restConnectionProvider) Handler() Handler {
+	return p.restHandler
+}
+
+func (p *restConnectionProvider) CurrentHost() string {
+	return p.endpoints[p.currentIndex.Load()]
+}
+
+func (p *restConnectionProvider) Hosts() []string {
+	// Return a copy to maintain immutability
+	hosts := make([]string, len(p.endpoints))
+	copy(hosts, p.endpoints)
+	return hosts
+}
+
+func (p *restConnectionProvider) SwitchHost(index int) error {
+	if index < 0 || index >= len(p.endpoints) {
+		return errors.Errorf("invalid host index %d, must be between 0 and %d", index, len(p.endpoints)-1)
+	}
+
+	oldIdx := p.currentIndex.Load()
+	p.currentIndex.Store(uint64(index))
+
+	// Update the rest handler's host
+	p.restHandler.SwitchHost(p.endpoints[index])
+
+	log.WithFields(logrus.Fields{
+		"previousHost": p.endpoints[oldIdx],
+		"newHost":      p.endpoints[index],
+	}).Debug("Switched REST endpoint")
+	return nil
+}

api/rest/rest_connection_provider_test.go

@@ -0,0 +1,80 @@
+package rest
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/OffchainLabs/prysm/v7/testing/assert"
+	"github.com/OffchainLabs/prysm/v7/testing/require"
+)
+
+func TestParseEndpoints(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected []string
+	}{
+		{"single endpoint", "http://localhost:3500", []string{"http://localhost:3500"}},
+		{"multiple endpoints", "http://host1:3500,http://host2:3500,http://host3:3500", []string{"http://host1:3500", "http://host2:3500", "http://host3:3500"}},
+		{"endpoints with spaces", "http://host1:3500, http://host2:3500 , http://host3:3500", []string{"http://host1:3500", "http://host2:3500", "http://host3:3500"}},
+		{"empty string", "", nil},
+		{"only commas", ",,,", []string{}},
+		{"trailing comma", "http://host1:3500,http://host2:3500,", []string{"http://host1:3500", "http://host2:3500"}},
+		{"leading comma", ",http://host1:3500,http://host2:3500", []string{"http://host1:3500", "http://host2:3500"}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := parseEndpoints(tt.input)
+			if !reflect.DeepEqual(tt.expected, got) {
+				t.Errorf("parseEndpoints(%q) = %v, want %v", tt.input, got, tt.expected)
+			}
+		})
+	}
+}
+
+func TestNewRestConnectionProvider_Errors(t *testing.T) {
+	t.Run("no endpoints", func(t *testing.T) {
+		_, err := NewRestConnectionProvider("")
+		require.ErrorContains(t, "no REST API endpoints provided", err)
+	})
+}
+
+func TestRestConnectionProvider(t *testing.T) {
+	provider, err := NewRestConnectionProvider("http://host1:3500,http://host2:3500,http://host3:3500")
+	require.NoError(t, err)
+
+	t.Run("initial state", func(t *testing.T) {
+		assert.Equal(t, 3, len(provider.Hosts()))
+		assert.Equal(t, "http://host1:3500", provider.CurrentHost())
+		assert.NotNil(t, provider.HttpClient())
+	})
+
+	t.Run("SwitchHost", func(t *testing.T) {
+		require.NoError(t, provider.SwitchHost(1))
+		assert.Equal(t, "http://host2:3500", provider.CurrentHost())
+		require.NoError(t, provider.SwitchHost(0))
+		assert.Equal(t, "http://host1:3500", provider.CurrentHost())
+		require.ErrorContains(t, "invalid host index", provider.SwitchHost(-1))
+		require.ErrorContains(t, "invalid host index", provider.SwitchHost(3))
+	})
+
+	t.Run("Hosts returns copy", func(t *testing.T) {
+		hosts := provider.Hosts()
+		original := hosts[0]
+		hosts[0] = "modified"
+		assert.Equal(t, original, provider.Hosts()[0])
+	})
+}
+
+func TestRestConnectionProvider_WithOptions(t *testing.T) {
+	headers := map[string][]string{"Authorization": {"Bearer token"}}
+	provider, err := NewRestConnectionProvider(
+		"http://localhost:3500",
+		WithHttpHeaders(headers),
+		WithHttpTimeout(30000000000), // 30 seconds in nanoseconds
+		WithTracing(),
+	)
+	require.NoError(t, err)
+	assert.NotNil(t, provider.HttpClient())
+	assert.Equal(t, "http://localhost:3500", provider.CurrentHost())
+}

api/rest/rest_handler.go

@@ -1,4 +1,4 @@
-package beacon_api
+package rest
 
 import (
 	"bytes"
@@ -21,37 +21,46 @@ import (
 
 type reqOption func(*http.Request)
 
-type RestHandler interface {
+// Handler defines the interface for making REST API requests.
+type Handler interface {
 	Get(ctx context.Context, endpoint string, resp any) error
 	GetStatusCode(ctx context.Context, endpoint string) (int, error)
 	GetSSZ(ctx context.Context, endpoint string) ([]byte, http.Header, error)
 	Post(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer, resp any) error
 	PostSSZ(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer) ([]byte, http.Header, error)
-	HttpClient() *http.Client
 	Host() string
-	SetHost(host string)
 }
 
-type BeaconApiRestHandler struct {
+type handler struct {
 	client       http.Client
 	host         string
 	reqOverrides []reqOption
 }
 
-// NewBeaconApiRestHandler returns a RestHandler
-func NewBeaconApiRestHandler(client http.Client, host string) RestHandler {
-	brh := &BeaconApiRestHandler{
+// newHandler returns a *handler for internal use within the rest package.
+func newHandler(client http.Client, host string) *handler {
+	rh := &handler{
 		client: client,
 		host:   host,
 	}
-	brh.appendAcceptOverride()
-	return brh
+	rh.appendAcceptOverride()
+	return rh
+}
+
+// NewHandler returns a Handler
+func NewHandler(client http.Client, host string) Handler {
+	rh := &handler{
+		client: client,
+		host:   host,
+	}
+	rh.appendAcceptOverride()
+	return rh
 }
 
 // appendAcceptOverride enables the Accept header to be customized at runtime via an environment variable.
 // This is specified as an env var because it is a niche option that prysm may use for performance testing or debugging
 // bug which users are unlikely to need. Using an env var keeps the set of user-facing flags cleaner.
-func (c *BeaconApiRestHandler) appendAcceptOverride() {
+func (c *handler) appendAcceptOverride() {
 	if accept := os.Getenv(params.EnvNameOverrideAccept); accept != "" {
 		c.reqOverrides = append(c.reqOverrides, func(req *http.Request) {
 			req.Header.Set("Accept", accept)
@@ -60,18 +69,18 @@ func (c *BeaconApiRestHandler) appendAcceptOverride() {
 }
 
 // HttpClient returns the underlying HTTP client of the handler
-func (c *BeaconApiRestHandler) HttpClient() *http.Client {
+func (c *handler) HttpClient() *http.Client {
 	return &c.client
 }
 
 // Host returns the underlying HTTP host
-func (c *BeaconApiRestHandler) Host() string {
+func (c *handler) Host() string {
 	return c.host
 }
 
 // Get sends a GET request and decodes the response body as a JSON object into the passed in object.
 // If an HTTP error is returned, the body is decoded as a DefaultJsonError JSON object and returned as the first return value.
-func (c *BeaconApiRestHandler) Get(ctx context.Context, endpoint string, resp any) error {
+func (c *handler) Get(ctx context.Context, endpoint string, resp any) error {
 	url := c.host + endpoint
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
@@ -94,7 +103,7 @@ func (c *BeaconApiRestHandler) Get(ctx context.Context, endpoint string, resp an
 // GetStatusCode sends a GET request and returns only the HTTP status code.
 // This is useful for endpoints like /eth/v1/node/health that communicate status via HTTP codes
 // (200 = ready, 206 = syncing, 503 = unavailable) rather than response bodies.
-func (c *BeaconApiRestHandler) GetStatusCode(ctx context.Context, endpoint string) (int, error) {
+func (c *handler) GetStatusCode(ctx context.Context, endpoint string) (int, error) {
 	url := c.host + endpoint
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
@@ -113,7 +122,7 @@ func (c *BeaconApiRestHandler) GetStatusCode(ctx context.Context, endpoint strin
 	return httpResp.StatusCode, nil
 }
 
-func (c *BeaconApiRestHandler) GetSSZ(ctx context.Context, endpoint string) ([]byte, http.Header, error) {
+func (c *handler) GetSSZ(ctx context.Context, endpoint string) ([]byte, http.Header, error) {
 	url := c.host + endpoint
 	req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
@@ -168,7 +177,7 @@ func (c *BeaconApiRestHandler) GetSSZ(ctx context.Context, endpoint string) ([]b
 
 // Post sends a POST request and decodes the response body as a JSON object into the passed in object.
 // If an HTTP error is returned, the body is decoded as a DefaultJsonError JSON object and returned as the first return value.
-func (c *BeaconApiRestHandler) Post(
+func (c *handler) Post(
 	ctx context.Context,
 	apiEndpoint string,
 	headers map[string]string,
@@ -204,7 +213,7 @@ func (c *BeaconApiRestHandler) Post(
 }
 
 // PostSSZ sends a POST request and prefers an SSZ (application/octet-stream) response body.
-func (c *BeaconApiRestHandler) PostSSZ(
+func (c *handler) PostSSZ(
 	ctx context.Context,
 	apiEndpoint string,
 	headers map[string]string,
@@ -305,6 +314,6 @@ func decodeResp(httpResp *http.Response, resp any) error {
 	return nil
 }
 
-func (c *BeaconApiRestHandler) SetHost(host string) {
+func (c *handler) SwitchHost(host string) {
 	c.host = host
 }

beacon-chain/blockchain/BUILD.bazel

@@ -27,6 +27,7 @@ go_library(
         "receive_blob.go",
         "receive_block.go",
         "receive_data_column.go",
+        "receive_payload_attestation_message.go",
         "service.go",
         "setup_forkchoice.go",
         "tracked_proposer.go",

beacon-chain/blockchain/receive_payload_attestation_message.go

@@ -0,0 +1,19 @@
+package blockchain
+
+import (
+	"context"
+
+	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+)
+
+// PayloadAttestationReceiver interface defines the methods of chain service for receiving
+// validated payload attestation messages.
+type PayloadAttestationReceiver interface {
+	ReceivePayloadAttestationMessage(context.Context, *ethpb.PayloadAttestationMessage) error
+}
+
+// ReceivePayloadAttestationMessage accepts a payload attestation message.
+// TODO: implement actual processing; for now this is a stub for sync integration.
+func (s *Service) ReceivePayloadAttestationMessage(ctx context.Context, a *ethpb.PayloadAttestationMessage) error {
+	return nil
+}

beacon-chain/blockchain/testing/mock.go

@@ -757,6 +757,11 @@ func (c *ChainService) ReceiveDataColumns(dcs []blocks.VerifiedRODataColumn) err
 	return nil
 }
 
+// ReceivePayloadAttestationMessage implements the same method in the chain service.
+func (c *ChainService) ReceivePayloadAttestationMessage(_ context.Context, _ *ethpb.PayloadAttestationMessage) error {
+	return nil
+}
+
 // DependentRootForEpoch mocks the same method in the chain service
 func (c *ChainService) DependentRootForEpoch(_ [32]byte, _ primitives.Epoch) ([32]byte, error) {
 	return c.TargetRoot, nil

beacon-chain/cache/BUILD.bazel

@@ -17,6 +17,7 @@ go_library(
         "error.go",
         "interfaces.go",
         "log.go",
+        "payload_attestation.go",
         "payload_id.go",
         "proposer_indices.go",
         "proposer_indices_disabled.go",  # keep

beacon-chain/cache/payload_attestation.go

@@ -0,0 +1,62 @@
+package cache
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
+	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+)
+
+var errNilPayloadAttestationMessage = errors.New("nil Payload Attestation Message")
+
+// PayloadAttestationCache tracks seen payload attestation messages for a single block root.
+type PayloadAttestationCache struct {
+	root [32]byte
+	seen map[uint64]struct{}
+	sync.Mutex
+}
+
+// Seen returns true if a vote for the given beacon block root has already been
+// processed for this validator index.
+func (p *PayloadAttestationCache) Seen(root [32]byte, idx uint64) bool {
+	p.Lock()
+	defer p.Unlock()
+	if p.root != root {
+		return false
+	}
+	if p.seen == nil {
+		return false
+	}
+	_, ok := p.seen[idx]
+	return ok
+}
+
+// Add marks the given payload attestation message as seen for this validator index.
+// This function assumes that the message has already been validated.
+func (p *PayloadAttestationCache) Add(att *eth.PayloadAttestationMessage, idx uint64) error {
+	if att == nil || att.Data == nil || len(att.Data.BeaconBlockRoot) == 0 {
+		return errNilPayloadAttestationMessage
+	}
+	root := bytesutil.ToBytes32(att.Data.BeaconBlockRoot)
+
+	p.Lock()
+	defer p.Unlock()
+	if p.root != root {
+		p.root = root
+		p.seen = make(map[uint64]struct{})
+	}
+	if p.seen == nil {
+		p.seen = make(map[uint64]struct{})
+	}
+	p.seen[idx] = struct{}{}
+	return nil
+}
+
+// Clear clears the internal cache.
+func (p *PayloadAttestationCache) Clear() {
+	p.Lock()
+	defer p.Unlock()
+	p.root = [32]byte{}
+	p.seen = nil
+}

beacon-chain/core/gloas/bid.go

@@ -17,27 +17,50 @@ import (
 )
 
 // ProcessExecutionPayloadBid processes a signed execution payload bid in the Gloas fork.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// process_execution_payload_bid(state: BeaconState, block: BeaconBlock):
 //
-//	signed_bid = block.body.signed_execution_payload_bid
-//	bid = signed_bid.message
-//	builder_index = bid.builder_index
-//	amount = bid.value
-//	if builder_index == BUILDER_INDEX_SELF_BUILD:
-//	  assert amount == 0
-//	  assert signed_bid.signature == G2_POINT_AT_INFINITY
-//	else:
-//	  assert is_active_builder(state, builder_index)
-//	  assert can_builder_cover_bid(state, builder_index, amount)
-//	  assert verify_execution_payload_bid_signature(state, signed_bid)
-//	assert bid.slot == block.slot
-//	assert bid.parent_block_hash == state.latest_block_hash
-//	assert bid.parent_block_root == block.parent_root
-//	assert bid.prev_randao == get_randao_mix(state, get_current_epoch(state))
-//	if amount > 0:
-//	  state.builder_pending_payments[...] = BuilderPendingPayment(weight=0, withdrawal=BuilderPendingWithdrawal(fee_recipient=bid.fee_recipient, amount=amount, builder_index=builder_index))
-//	state.latest_execution_payload_bid = bid
+//	<spec fn="process_execution_payload_bid" fork="gloas" hash="6dc696bb">
+//	def process_execution_payload_bid(state: BeaconState, block: BeaconBlock) -> None:
+//	    signed_bid = block.body.signed_execution_payload_bid
+//	    bid = signed_bid.message
+//	    builder_index = bid.builder_index
+//	    amount = bid.value
+//
+//	    # For self-builds, amount must be zero regardless of withdrawal credential prefix
+//	    if builder_index == BUILDER_INDEX_SELF_BUILD:
+//	        assert amount == 0
+//	        assert signed_bid.signature == bls.G2_POINT_AT_INFINITY
+//	    else:
+//	        # Verify that the builder is active
+//	        assert is_active_builder(state, builder_index)
+//	        # Verify that the builder has funds to cover the bid
+//	        assert can_builder_cover_bid(state, builder_index, amount)
+//	        # Verify that the bid signature is valid
+//	        assert verify_execution_payload_bid_signature(state, signed_bid)
+//
+//	    # Verify that the bid is for the current slot
+//	    assert bid.slot == block.slot
+//	    # Verify that the bid is for the right parent block
+//	    assert bid.parent_block_hash == state.latest_block_hash
+//	    assert bid.parent_block_root == block.parent_root
+//	    assert bid.prev_randao == get_randao_mix(state, get_current_epoch(state))
+//
+//	    # Record the pending payment if there is some payment
+//	    if amount > 0:
+//	        pending_payment = BuilderPendingPayment(
+//	            weight=0,
+//	            withdrawal=BuilderPendingWithdrawal(
+//	                fee_recipient=bid.fee_recipient,
+//	                amount=amount,
+//	                builder_index=builder_index,
+//	            ),
+//	        )
+//	        state.builder_pending_payments[SLOTS_PER_EPOCH + bid.slot % SLOTS_PER_EPOCH] = (
+//	            pending_payment
+//	        )
+//
+//	    # Cache the signed execution payload bid
+//	    state.latest_execution_payload_bid = bid
+//	</spec>
 func ProcessExecutionPayloadBid(st state.BeaconState, block interfaces.ReadOnlyBeaconBlock) error {
 	signedBid, err := block.Body().SignedExecutionPayloadBid()
 	if err != nil {

beacon-chain/core/gloas/payload_attestation.go

@@ -24,14 +24,21 @@ import (
 )
 
 // ProcessPayloadAttestations validates payload attestations in a block body.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// process_payload_attestation(state: BeaconState, payload_attestation: PayloadAttestation):
 //
-//	data = payload_attestation.data
-//	assert data.beacon_block_root == state.latest_block_header.parent_root
-//	assert data.slot + 1 == state.slot
-//	indexed = get_indexed_payload_attestation(state, data.slot, payload_attestation)
-//	assert is_valid_indexed_payload_attestation(state, indexed)
+//	<spec fn="process_payload_attestation" fork="gloas" hash="f46bf0b0">
+//	def process_payload_attestation(
+//	    state: BeaconState, payload_attestation: PayloadAttestation
+//	) -> None:
+//	    data = payload_attestation.data
+//
+//	    # Check that the attestation is for the parent beacon block
+//	    assert data.beacon_block_root == state.latest_block_header.parent_root
+//	    # Check that the attestation is for the previous slot
+//	    assert data.slot + 1 == state.slot
+//	    # Verify signature
+//	    indexed_payload_attestation = get_indexed_payload_attestation(state, payload_attestation)
+//	    assert is_valid_indexed_payload_attestation(state, indexed_payload_attestation)
+//	</spec>
 func ProcessPayloadAttestations(ctx context.Context, st state.BeaconState, body interfaces.ReadOnlyBeaconBlockBody) error {
 	atts, err := body.PayloadAttestations()
 	if err != nil {
@@ -90,17 +97,24 @@ func indexedPayloadAttestation(ctx context.Context, st state.ReadOnlyBeaconState
 }
 
 // payloadCommittee returns the payload timeliness committee for a given slot for the state.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// get_ptc(state: BeaconState, slot: Slot) -> Vector[ValidatorIndex, PTC_SIZE]:
 //
-//	epoch = compute_epoch_at_slot(slot)
-//	seed = hash(get_seed(state, epoch, DOMAIN_PTC_ATTESTER) + uint_to_bytes(slot))
-//	indices = []
-//	committees_per_slot = get_committee_count_per_slot(state, epoch)
-//	for i in range(committees_per_slot):
-//	  committee = get_beacon_committee(state, slot, CommitteeIndex(i))
-//	  indices.extend(committee)
-//	return compute_balance_weighted_selection(state, indices, seed, size=PTC_SIZE, shuffle_indices=False)
+//	<spec fn="get_ptc" fork="gloas" hash="ae15f761">
+//	def get_ptc(state: BeaconState, slot: Slot) -> Vector[ValidatorIndex, PTC_SIZE]:
+//	    """
+//	    Get the payload timeliness committee for the given ``slot``.
+//	    """
+//	    epoch = compute_epoch_at_slot(slot)
+//	    seed = hash(get_seed(state, epoch, DOMAIN_PTC_ATTESTER) + uint_to_bytes(slot))
+//	    indices: List[ValidatorIndex] = []
+//	    # Concatenate all committees for this slot in order
+//	    committees_per_slot = get_committee_count_per_slot(state, epoch)
+//	    for i in range(committees_per_slot):
+//	        committee = get_beacon_committee(state, slot, CommitteeIndex(i))
+//	        indices.extend(committee)
+//	    return compute_balance_weighted_selection(
+//	        state, indices, seed, size=PTC_SIZE, shuffle_indices=False
+//	    )
+//	</spec>
 func payloadCommittee(ctx context.Context, st state.ReadOnlyBeaconState, slot primitives.Slot) ([]primitives.ValidatorIndex, error) {
 	epoch := slots.ToEpoch(slot)
 	seed, err := ptcSeed(st, epoch, slot)
@@ -142,6 +156,11 @@ func payloadCommittee(ctx context.Context, st state.ReadOnlyBeaconState, slot pr
 	return selected, nil
 }
 
+// PayloadTimelinessCommittee returns the payload timeliness committee for a given slot.
+func PayloadTimelinessCommittee(ctx context.Context, st state.ReadOnlyBeaconState, slot primitives.Slot) ([]primitives.ValidatorIndex, error) {
+	return payloadCommittee(ctx, st, slot)
+}
+
 // ptcSeed computes the seed for the payload timeliness committee.
 func ptcSeed(st state.ReadOnlyBeaconState, epoch primitives.Epoch, slot primitives.Slot) ([32]byte, error) {
 	seed, err := helpers.Seed(st, epoch, params.BeaconConfig().DomainPTCAttester)
@@ -152,17 +171,35 @@ func ptcSeed(st state.ReadOnlyBeaconState, epoch primitives.Epoch, slot primitiv
 }
 
 // selectByBalance selects a balance-weighted subset of input candidates.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// compute_balance_weighted_selection(state, indices, seed, size, shuffle_indices):
-// Note: shuffle_indices is false for PTC.
 //
-//	total = len(indices); selected = []; i = 0
-//	while len(selected) < size:
-//	  next = i % total
-//	  if shuffle_indices: next = compute_shuffled_index(next, total, seed)
-//	  if compute_balance_weighted_acceptance(state, indices[next], seed, i):
-//	    selected.append(indices[next])
-//	  i += 1
+//	<spec fn="compute_balance_weighted_selection" fork="gloas" hash="2c9f1c23">
+//	def compute_balance_weighted_selection(
+//	    state: BeaconState,
+//	    indices: Sequence[ValidatorIndex],
+//	    seed: Bytes32,
+//	    size: uint64,
+//	    shuffle_indices: bool,
+//	) -> Sequence[ValidatorIndex]:
+//	    """
+//	    Return ``size`` indices sampled by effective balance, using ``indices``
+//	    as candidates. If ``shuffle_indices`` is ``True``, candidate indices
+//	    are themselves sampled from ``indices`` by shuffling it, otherwise
+//	    ``indices`` is traversed in order.
+//	    """
+//	    total = uint64(len(indices))
+//	    assert total > 0
+//	    selected: List[ValidatorIndex] = []
+//	    i = uint64(0)
+//	    while len(selected) < size:
+//	        next_index = i % total
+//	        if shuffle_indices:
+//	            next_index = compute_shuffled_index(next_index, total, seed)
+//	        candidate_index = indices[next_index]
+//	        if compute_balance_weighted_acceptance(state, candidate_index, seed, i):
+//	            selected.append(candidate_index)
+//	        i += 1
+//	    return selected
+//	</spec>
 func selectByBalanceFill(
 	ctx context.Context,
 	st state.ReadOnlyBeaconState,
@@ -199,15 +236,22 @@ func selectByBalanceFill(
 }
 
 // acceptByBalance determines if a validator is accepted based on its effective balance.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// compute_balance_weighted_acceptance(state, index, seed, i):
 //
-//	MAX_RANDOM_VALUE = 2**16 - 1
-//	random_bytes = hash(seed + uint_to_bytes(i // 16))
-//	offset = i % 16 * 2
-//	random_value = bytes_to_uint64(random_bytes[offset:offset+2])
-//	effective_balance = state.validators[index].effective_balance
-//	return effective_balance * MAX_RANDOM_VALUE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_value
+//	<spec fn="compute_balance_weighted_acceptance" fork="gloas" hash="9954dcd0">
+//	def compute_balance_weighted_acceptance(
+//	    state: BeaconState, index: ValidatorIndex, seed: Bytes32, i: uint64
+//	) -> bool:
+//	    """
+//	    Return whether to accept the selection of the validator ``index``, with probability
+//	    proportional to its ``effective_balance``, and randomness given by ``seed`` and ``i``.
+//	    """
+//	    MAX_RANDOM_VALUE = 2**16 - 1
+//	    random_bytes = hash(seed + uint_to_bytes(i // 16))
+//	    offset = i % 16 * 2
+//	    random_value = bytes_to_uint64(random_bytes[offset : offset + 2])
+//	    effective_balance = state.validators[index].effective_balance
+//	    return effective_balance * MAX_RANDOM_VALUE >= MAX_EFFECTIVE_BALANCE_ELECTRA * random_value
+//	</spec>
 func acceptByBalance(st state.ReadOnlyBeaconState, idx primitives.ValidatorIndex, seedBuf []byte, hashFunc func([]byte) [32]byte, maxBalance uint64, round uint64) (bool, error) {
 	// Reuse the seed buffer by overwriting the last 8 bytes with the round counter.
 	binary.LittleEndian.PutUint64(seedBuf[len(seedBuf)-8:], round/16)
@@ -224,16 +268,26 @@ func acceptByBalance(st state.ReadOnlyBeaconState, idx primitives.ValidatorIndex
 }
 
 // validIndexedPayloadAttestation verifies the signature of an indexed payload attestation.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// is_valid_indexed_payload_attestation(state: BeaconState, indexed_payload_attestation: IndexedPayloadAttestation) -> bool:
 //
-//	indices = indexed_payload_attestation.attesting_indices
-//	return len(indices) > 0 and indices == sorted(indices) and
-//	  bls.FastAggregateVerify(
-//	    [state.validators[i].pubkey for i in indices],
-//	    compute_signing_root(indexed_payload_attestation.data, get_domain(state, DOMAIN_PTC_ATTESTER, compute_epoch_at_slot(attestation.data.slot)),
-//	    indexed_payload_attestation.signature,
-//	  )
+//	<spec fn="is_valid_indexed_payload_attestation" fork="gloas" hash="cf1e65b5">
+//	def is_valid_indexed_payload_attestation(
+//	    state: BeaconState, indexed_payload_attestation: IndexedPayloadAttestation
+//	) -> bool:
+//	    """
+//	    Check if ``indexed_payload_attestation`` is non-empty, has sorted indices, and has
+//	    a valid aggregate signature.
+//	    """
+//	    # Verify indices are non-empty and sorted
+//	    indices = indexed_payload_attestation.attesting_indices
+//	    if len(indices) == 0 or not indices == sorted(indices):
+//	        return False
+//
+//	    # Verify aggregate signature
+//	    pubkeys = [state.validators[i].pubkey for i in indices]
+//	    domain = get_domain(state, DOMAIN_PTC_ATTESTER, None)
+//	    signing_root = compute_signing_root(indexed_payload_attestation.data, domain)
+//	    return bls.FastAggregateVerify(pubkeys, signing_root, indexed_payload_attestation.signature)
+//	</spec>
 func validIndexedPayloadAttestation(st state.ReadOnlyBeaconState, att *consensus_types.IndexedPayloadAttestation) error {
 	indices := att.AttestingIndices
 	if len(indices) == 0 || !slices.IsSorted(indices) {

beacon-chain/core/gloas/pending_payment.go

@@ -10,17 +10,21 @@ import (
 )
 
 // ProcessBuilderPendingPayments processes the builder pending payments from the previous epoch.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def process_builder_pending_payments(state: BeaconState) -> None:
 //
-//	quorum = get_builder_payment_quorum_threshold(state)
-//	for payment in state.builder_pending_payments[:SLOTS_PER_EPOCH]:
-//	    if payment.weight >= quorum:
-//	        state.builder_pending_withdrawals.append(payment.withdrawal)
+//	<spec fn="process_builder_pending_payments" fork="gloas" hash="10da48dd">
+//	def process_builder_pending_payments(state: BeaconState) -> None:
+//	    """
+//	    Processes the builder pending payments from the previous epoch.
+//	    """
+//	    quorum = get_builder_payment_quorum_threshold(state)
+//	    for payment in state.builder_pending_payments[:SLOTS_PER_EPOCH]:
+//	        if payment.weight >= quorum:
+//	            state.builder_pending_withdrawals.append(payment.withdrawal)
 //
-//	old_payments = state.builder_pending_payments[SLOTS_PER_EPOCH:]
-//	new_payments = [BuilderPendingPayment() for _ in range(SLOTS_PER_EPOCH)]
-//	state.builder_pending_payments = old_payments + new_payments
+//	    old_payments = state.builder_pending_payments[SLOTS_PER_EPOCH:]
+//	    new_payments = [BuilderPendingPayment() for _ in range(SLOTS_PER_EPOCH)]
+//	    state.builder_pending_payments = old_payments + new_payments
+//	</spec>
 func ProcessBuilderPendingPayments(state state.BeaconState) error {
 	quorum, err := builderQuorumThreshold(state)
 	if err != nil {
@@ -53,12 +57,16 @@ func ProcessBuilderPendingPayments(state state.BeaconState) error {
 }
 
 // builderQuorumThreshold calculates the quorum threshold for builder payments.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def get_builder_payment_quorum_threshold(state: BeaconState) -> uint64:
 //
-//	per_slot_balance = get_total_active_balance(state) // SLOTS_PER_EPOCH
-//	quorum = per_slot_balance * BUILDER_PAYMENT_THRESHOLD_NUMERATOR
-//	return uint64(quorum // BUILDER_PAYMENT_THRESHOLD_DENOMINATOR)
+//	<spec fn="get_builder_payment_quorum_threshold" fork="gloas" hash="a64b7ffb">
+//	def get_builder_payment_quorum_threshold(state: BeaconState) -> uint64:
+//	    """
+//	    Calculate the quorum threshold for builder payments.
+//	    """
+//	    per_slot_balance = get_total_active_balance(state) // SLOTS_PER_EPOCH
+//	    quorum = per_slot_balance * BUILDER_PAYMENT_THRESHOLD_NUMERATOR
+//	    return uint64(quorum // BUILDER_PAYMENT_THRESHOLD_DENOMINATOR)
+//	</spec>
 func builderQuorumThreshold(state state.ReadOnlyBeaconState) (primitives.Gwei, error) {
 	activeBalance, err := helpers.TotalActiveBalance(state)
 	if err != nil {

beacon-chain/core/gloas/proposer_slashing.go

@@ -11,16 +11,20 @@ import (
 )
 
 // RemoveBuilderPendingPayment removes the pending builder payment for the proposal slot.
-// Spec v1.7.0 (pseudocode):
 //
+//	<spec fn="process_proposer_slashing" fork="gloas" lines="22-32" hash="4da721ef">
+//	# [New in Gloas:EIP7732]
+//	# Remove the BuilderPendingPayment corresponding to
+//	# this proposal if it is still in the 2-epoch window.
 //	slot = header_1.slot
 //	proposal_epoch = compute_epoch_at_slot(slot)
 //	if proposal_epoch == get_current_epoch(state):
-//	  payment_index = SLOTS_PER_EPOCH + slot % SLOTS_PER_EPOCH
-//	  state.builder_pending_payments[payment_index] = BuilderPendingPayment()
+//	    payment_index = SLOTS_PER_EPOCH + slot % SLOTS_PER_EPOCH
+//	    state.builder_pending_payments[payment_index] = BuilderPendingPayment()
 //	elif proposal_epoch == get_previous_epoch(state):
-//	  payment_index = slot % SLOTS_PER_EPOCH
-//	  state.builder_pending_payments[payment_index] = BuilderPendingPayment()
+//	    payment_index = slot % SLOTS_PER_EPOCH
+//	    state.builder_pending_payments[payment_index] = BuilderPendingPayment()
+//	</spec>
 func RemoveBuilderPendingPayment(st state.BeaconState, header *eth.BeaconBlockHeader) error {
 	proposalEpoch := slots.ToEpoch(header.Slot)
 	currentEpoch := time.CurrentEpoch(st)

beacon-chain/core/transition/transition.go

@@ -143,10 +143,11 @@ func ProcessSlot(ctx context.Context, state state.BeaconState) (state.BeaconStat
 		return nil, err
 	}
 
-	// Spec v1.6.1 (pseudocode):
+	// <spec fn="process_slot" fork="gloas" lines="11-13" hash="62b28839">
 	// # [New in Gloas:EIP7732]
 	// # Unset the next payload availability
 	// state.execution_payload_availability[(state.slot + 1) % SLOTS_PER_HISTORICAL_ROOT] = 0b0
+	// </spec>
 	if state.Version() >= version.Gloas {
 		index := uint64((state.Slot() + 1) % params.BeaconConfig().SlotsPerHistoricalRoot)
 		if err := state.UpdateExecutionPayloadAvailabilityAtIndex(index, 0x0); err != nil {

beacon-chain/db/kv/custody_test.go

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

beacon-chain/node/node.go

@@ -134,10 +134,20 @@ type BeaconNode struct {
 
 // New creates a new node instance, sets up configuration options, and registers
 // every required service to the node.
-func New(cliCtx *cli.Context, cancel context.CancelFunc, opts ...Option) (*BeaconNode, error) {
+func New(cliCtx *cli.Context, cancel context.CancelFunc, optFuncs []func(*cli.Context) ([]Option, error), opts ...Option) (*BeaconNode, error) {
 	if err := configureBeacon(cliCtx); err != nil {
 		return nil, errors.Wrap(err, "could not set beacon configuration options")
 	}
+
+	for _, of := range optFuncs {
+		ofo, err := of(cliCtx)
+		if err != nil {
+			return nil, err
+		}
+		if ofo != nil {
+			opts = append(opts, ofo...)
+		}
+	}
 	ctx := cliCtx.Context
 
 	beacon := &BeaconNode{

beacon-chain/node/node_test.go

@@ -59,7 +59,7 @@ func TestNodeClose_OK(t *testing.T) {
 		WithDataColumnStorage(filesystem.NewEphemeralDataColumnStorage(t)),
 	}
 
-	node, err := New(ctx, cancel, options...)
+	node, err := New(ctx, cancel, nil, options...)
 	require.NoError(t, err)
 
 	node.Close()
@@ -87,7 +87,7 @@ func TestNodeStart_Ok(t *testing.T) {
 		WithDataColumnStorage(filesystem.NewEphemeralDataColumnStorage(t)),
 	}
 
-	node, err := New(ctx, cancel, options...)
+	node, err := New(ctx, cancel, nil, options...)
 	require.NoError(t, err)
 	require.NotNil(t, node.lcStore)
 	node.services = &runtime.ServiceRegistry{}
@@ -116,7 +116,7 @@ func TestNodeStart_SyncChecker(t *testing.T) {
 		WithDataColumnStorage(filesystem.NewEphemeralDataColumnStorage(t)),
 	}
 
-	node, err := New(ctx, cancel, options...)
+	node, err := New(ctx, cancel, nil, options...)
 	require.NoError(t, err)
 	go func() {
 		node.Start()
@@ -151,7 +151,7 @@ func TestClearDB(t *testing.T) {
 		WithDataColumnStorage(filesystem.NewEphemeralDataColumnStorage(t)),
 	}
 
-	_, err = New(context, cancel, options...)
+	_, err = New(context, cancel, nil, options...)
 	require.NoError(t, err)
 	require.LogsContain(t, hook, "Removing database")
 }

beacon-chain/p2p/gossip_topic_mappings.go

@@ -25,6 +25,7 @@ var gossipTopicMappings = map[string]func() proto.Message{
 	LightClientOptimisticUpdateTopicFormat:    func() proto.Message { return &ethpb.LightClientOptimisticUpdateAltair{} },
 	LightClientFinalityUpdateTopicFormat:      func() proto.Message { return &ethpb.LightClientFinalityUpdateAltair{} },
 	DataColumnSubnetTopicFormat:               func() proto.Message { return &ethpb.DataColumnSidecar{} },
+	PayloadAttestationMessageTopicFormat:      func() proto.Message { return &ethpb.PayloadAttestationMessage{} },
 }
 
 // GossipTopicMappings is a function to return the assigned data type
@@ -144,4 +145,7 @@ func init() {
 
 	// Specially handle Fulu objects.
 	GossipTypeMapping[reflect.TypeFor[*ethpb.SignedBeaconBlockFulu]()] = BlockSubnetTopicFormat
+
+	// Payload attestation messages.
+	GossipTypeMapping[reflect.TypeFor[*ethpb.PayloadAttestationMessage]()] = PayloadAttestationMessageTopicFormat
 }

beacon-chain/p2p/topics.go

@@ -46,6 +46,8 @@ const (
 	GossipLightClientOptimisticUpdateMessage = "light_client_optimistic_update"
 	// GossipDataColumnSidecarMessage is the name for the data column sidecar message type.
 	GossipDataColumnSidecarMessage = "data_column_sidecar"
+	// GossipPayloadAttestationMessage is the name for the payload attestation message type.
+	GossipPayloadAttestationMessage = "payload_attestation_message"
 
 	// Topic Formats
 	//
@@ -75,6 +77,8 @@ const (
 	LightClientOptimisticUpdateTopicFormat = GossipProtocolAndDigest + GossipLightClientOptimisticUpdateMessage
 	// DataColumnSubnetTopicFormat is the topic format for the data column subnet.
 	DataColumnSubnetTopicFormat = GossipProtocolAndDigest + GossipDataColumnSidecarMessage + "_%d"
+	// PayloadAttestationMessageTopicFormat is the topic format for payload attestation messages.
+	PayloadAttestationMessageTopicFormat = GossipProtocolAndDigest + GossipPayloadAttestationMessage
 )
 
 // topic is a struct representing a single gossipsub topic.
@@ -148,6 +152,7 @@ func (s *Service) allTopics() []topic {
 	empty := [4]byte{0, 0, 0, 0} // empty digest for templates, replaced by real digests in per-fork copies.
 	templates := []topic{
 		newTopic(genesis, future, empty, GossipBlockMessage),
+		newTopic(genesis, future, empty, GossipPayloadAttestationMessage),
 		newTopic(genesis, future, empty, GossipAggregateAndProofMessage),
 		newTopic(genesis, future, empty, GossipExitMessage),
 		newTopic(genesis, future, empty, GossipProposerSlashingMessage),

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

@@ -26,8 +26,8 @@ import (
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/operations/voluntaryexits/mock"
 	p2pMock "github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/testing"
 	"github.com/OffchainLabs/prysm/v7/beacon-chain/rpc/core"
-	mockSync "github.com/OffchainLabs/prysm/v7/beacon-chain/sync/initial-sync/testing"
 	state_native "github.com/OffchainLabs/prysm/v7/beacon-chain/state/state-native"
+	mockSync "github.com/OffchainLabs/prysm/v7/beacon-chain/sync/initial-sync/testing"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/crypto/bls"

beacon-chain/state/state-native/getters_gloas.go

@@ -46,14 +46,20 @@ func (b *BeaconState) BuilderPubkey(builderIndex primitives.BuilderIndex) ([fiel
 }
 
 // IsActiveBuilder returns true if the builder placement is finalized and it has not initiated exit.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def is_active_builder(state: BeaconState, builder_index: BuilderIndex) -> bool:
 //
-//	builder = state.builders[builder_index]
-//	return (
-//	    builder.deposit_epoch < state.finalized_checkpoint.epoch
-//	    and builder.withdrawable_epoch == FAR_FUTURE_EPOCH
-//	)
+//	<spec fn="is_active_builder" fork="gloas" hash="1a599fb2">
+//	def is_active_builder(state: BeaconState, builder_index: BuilderIndex) -> bool:
+//	    """
+//	    Check if the builder at ``builder_index`` is active for the given ``state``.
+//	    """
+//	    builder = state.builders[builder_index]
+//	    return (
+//	        # Placement in builder list is finalized
+//	        builder.deposit_epoch < state.finalized_checkpoint.epoch
+//	        # Has not initiated exit
+//	        and builder.withdrawable_epoch == FAR_FUTURE_EPOCH
+//	    )
+//	</spec>
 func (b *BeaconState) IsActiveBuilder(builderIndex primitives.BuilderIndex) (bool, error) {
 	if b.version < version.Gloas {
 		return false, errNotSupported("IsActiveBuilder", b.version)
@@ -72,15 +78,18 @@ func (b *BeaconState) IsActiveBuilder(builderIndex primitives.BuilderIndex) (boo
 }
 
 // CanBuilderCoverBid returns true if the builder has enough balance to cover the given bid amount.
-// Spec v1.7.0-alpha.0 (pseudocode):
-// def can_builder_cover_bid(state: BeaconState, builder_index: BuilderIndex, bid_amount: Gwei) -> bool:
 //
-//	builder_balance = state.builders[builder_index].balance
-//	pending_withdrawals_amount = get_pending_balance_to_withdraw_for_builder(state, builder_index)
-//	min_balance = MIN_DEPOSIT_AMOUNT + pending_withdrawals_amount
-//	if builder_balance < min_balance:
-//	    return False
-//	return builder_balance - min_balance >= bid_amount
+//	<spec fn="can_builder_cover_bid" fork="gloas" hash="9e3f2d7c">
+//	def can_builder_cover_bid(
+//	    state: BeaconState, builder_index: BuilderIndex, bid_amount: Gwei
+//	) -> bool:
+//	    builder_balance = state.builders[builder_index].balance
+//	    pending_withdrawals_amount = get_pending_balance_to_withdraw_for_builder(state, builder_index)
+//	    min_balance = MIN_DEPOSIT_AMOUNT + pending_withdrawals_amount
+//	    if builder_balance < min_balance:
+//	        return False
+//	    return builder_balance - min_balance >= bid_amount
+//	</spec>
 func (b *BeaconState) CanBuilderCoverBid(builderIndex primitives.BuilderIndex, bidAmount primitives.Gwei) (bool, error) {
 	if b.version < version.Gloas {
 		return false, errNotSupported("CanBuilderCoverBid", b.version)

beacon-chain/sync/BUILD.bazel

@@ -20,6 +20,7 @@ go_library(
         "metrics.go",
         "once.go",
         "options.go",
+        "payload_attestations.go",
         "pending_attestations_queue.go",
         "pending_blocks_queue.go",
         "rate_limiter.go",
@@ -113,6 +114,7 @@ go_library(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
+        "//consensus-types/epbs/payload-attestation:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//consensus-types/wrapper:go_default_library",
@@ -177,6 +179,7 @@ go_test(
         "fork_watcher_test.go",
         "kzg_batch_verifier_test.go",
         "once_test.go",
+        "payload_attestations_test.go",
         "pending_attestations_queue_bucket_test.go",
         "pending_attestations_queue_test.go",
         "pending_blocks_queue_test.go",
@@ -263,6 +266,7 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
+        "//consensus-types/epbs/payload-attestation:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//consensus-types/wrapper:go_default_library",

beacon-chain/sync/options.go

@@ -207,6 +207,13 @@ func WithTrackedValidatorsCache(c *cache.TrackedValidatorsCache) Option {
 	}
 }
 
+func WithPayloadAttestationCache(r *cache.PayloadAttestationCache) Option {
+	return func(s *Service) error {
+		s.payloadAttestationCache = r
+		return nil
+	}
+}
+
 // WithSlasherEnabled configures the sync package to support slashing detection.
 func WithSlasherEnabled(enabled bool) Option {
 	return func(s *Service) error {

beacon-chain/sync/payload_attestations.go

@@ -0,0 +1,94 @@
+package sync
+
+import (
+	"context"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/verification"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+	"github.com/OffchainLabs/prysm/v7/monitoring/tracing"
+	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
+	eth "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+	pubsub "github.com/libp2p/go-libp2p-pubsub"
+	"github.com/libp2p/go-libp2p/core/peer"
+	"github.com/pkg/errors"
+	"google.golang.org/protobuf/proto"
+)
+
+var (
+	errAlreadySeenPayloadAttestation = errors.New("payload attestation already seen for validator index")
+)
+
+func (s *Service) validatePayloadAttestation(ctx context.Context, pid peer.ID, msg *pubsub.Message) (pubsub.ValidationResult, error) {
+	if pid == s.cfg.p2p.PeerID() {
+		return pubsub.ValidationAccept, nil
+	}
+	if s.cfg.initialSync.Syncing() {
+		return pubsub.ValidationIgnore, nil
+	}
+	ctx, span := trace.StartSpan(ctx, "sync.validatePayloadAttestation")
+	defer span.End()
+	if msg.Topic == nil {
+		return pubsub.ValidationReject, p2p.ErrInvalidTopic
+	}
+	m, err := s.decodePubsubMessage(msg)
+	if err != nil {
+		tracing.AnnotateError(span, err)
+		return pubsub.ValidationReject, err
+	}
+	att, ok := m.(*eth.PayloadAttestationMessage)
+	if !ok {
+		return pubsub.ValidationReject, errWrongMessage
+	}
+	pa, err := payloadattestation.NewReadOnly(att)
+	if err != nil {
+		log.WithError(err).Error("Failed to create read only payload attestation")
+		return pubsub.ValidationIgnore, err
+	}
+	v := s.newPayloadAttestationVerifier(pa, verification.GossipPayloadAttestationMessageRequirements)
+
+	if err := v.VerifyCurrentSlot(); err != nil {
+		return pubsub.ValidationIgnore, err
+	}
+
+	if err := v.VerifyPayloadStatus(); err != nil {
+		return pubsub.ValidationReject, err
+	}
+
+	if err := v.VerifyBlockRootSeen(s.hasBadBlock); err != nil {
+		return pubsub.ValidationIgnore, err
+	}
+
+	if err := v.VerifyBlockRootValid(s.hasBadBlock); err != nil {
+		return pubsub.ValidationReject, err
+	}
+
+	st, err := s.cfg.chain.HeadState(ctx)
+	if err != nil {
+		return pubsub.ValidationIgnore, err
+	}
+
+	if err := v.VerifyValidatorInPTC(ctx, st); err != nil {
+		return pubsub.ValidationReject, err
+	}
+
+	if err := v.VerifySignature(st); err != nil {
+		return pubsub.ValidationReject, err
+	}
+
+	if s.payloadAttestationCache.Seen(pa.BeaconBlockRoot(), uint64(pa.ValidatorIndex())) {
+		return pubsub.ValidationIgnore, errAlreadySeenPayloadAttestation
+	}
+
+	msg.ValidatorData = att
+
+	return pubsub.ValidationAccept, nil
+}
+
+func (s *Service) payloadAttestationSubscriber(ctx context.Context, msg proto.Message) error {
+	a, ok := msg.(*eth.PayloadAttestationMessage)
+	if !ok {
+		return errWrongMessage
+	}
+	return s.cfg.chain.ReceivePayloadAttestationMessage(ctx, a)
+}

beacon-chain/sync/payload_attestations_test.go

@@ -0,0 +1,172 @@
+package sync
+
+import (
+	"bytes"
+	"context"
+	"reflect"
+	"testing"
+	"time"
+
+	mock "github.com/OffchainLabs/prysm/v7/beacon-chain/blockchain/testing"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/cache"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/p2p"
+	p2ptest "github.com/OffchainLabs/prysm/v7/beacon-chain/p2p/testing"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/startup"
+	mockSync "github.com/OffchainLabs/prysm/v7/beacon-chain/sync/initial-sync/testing"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/verification"
+	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
+	"github.com/OffchainLabs/prysm/v7/config/params"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+	"github.com/OffchainLabs/prysm/v7/testing/require"
+	"github.com/OffchainLabs/prysm/v7/testing/util"
+	pubsub "github.com/libp2p/go-libp2p-pubsub"
+	pb "github.com/libp2p/go-libp2p-pubsub/pb"
+	"github.com/pkg/errors"
+)
+
+func TestValidatePayloadAttestationMessage_IncorrectTopic(t *testing.T) {
+	ctx := context.Background()
+	p := p2ptest.NewTestP2P(t)
+	chainService := &mock.ChainService{Genesis: time.Unix(time.Now().Unix()-int64(params.BeaconConfig().SecondsPerSlot), 0)}
+	s := &Service{
+		payloadAttestationCache: &cache.PayloadAttestationCache{},
+		cfg:                     &config{chain: chainService, p2p: p, initialSync: &mockSync.Sync{}, clock: startup.NewClock(chainService.Genesis, chainService.ValidatorsRoot)}}
+
+	msg := util.HydratePayloadAttestation(&ethpb.PayloadAttestation{}) // Using payload attestation for message should fail.
+	buf := new(bytes.Buffer)
+	_, err := p.Encoding().EncodeGossip(buf, msg)
+	require.NoError(t, err)
+
+	topic := p2p.GossipTypeMapping[reflect.TypeFor[*ethpb.PayloadAttestation]()]
+	digest, err := s.currentForkDigest()
+	require.NoError(t, err)
+	topic = s.addDigestToTopic(topic, digest)
+
+	result, err := s.validatePayloadAttestation(ctx, "", &pubsub.Message{
+		Message: &pb.Message{
+			Data:  buf.Bytes(),
+			Topic: &topic,
+		}})
+	require.ErrorContains(t, "extraction failed for topic", err)
+	require.Equal(t, result, pubsub.ValidationReject)
+}
+
+func TestValidatePayloadAttestationMessage_ErrorPathsWithMock(t *testing.T) {
+	tests := []struct {
+		error    error
+		verifier verification.NewPayloadAttestationMsgVerifier
+		result   pubsub.ValidationResult
+	}{
+		{
+			error: errors.New("incorrect slot"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrIncorrectPayloadAttSlot: errors.New("incorrect slot")}
+			},
+			result: pubsub.ValidationIgnore,
+		},
+		{
+			error: errors.New("incorrect status"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrIncorrectPayloadAttStatus: errors.New("incorrect status")}
+			},
+			result: pubsub.ValidationReject,
+		},
+		{
+			error: errors.New("block root seen"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrPayloadAttBlockRootNotSeen: errors.New("block root seen")}
+			},
+			result: pubsub.ValidationIgnore,
+		},
+		{
+			error: errors.New("block root invalid"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrPayloadAttBlockRootInvalid: errors.New("block root invalid")}
+			},
+			result: pubsub.ValidationReject,
+		},
+		{
+			error: errors.New("validator not in PTC"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrIncorrectPayloadAttValidator: errors.New("validator not in PTC")}
+			},
+			result: pubsub.ValidationReject,
+		},
+		{
+			error: errors.New("incorrect signature"),
+			verifier: func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+				return &verification.MockPayloadAttestation{ErrInvalidMessageSignature: errors.New("incorrect signature")}
+			},
+			result: pubsub.ValidationReject,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.error.Error(), func(t *testing.T) {
+			ctx := context.Background()
+			p := p2ptest.NewTestP2P(t)
+			chainService := &mock.ChainService{Genesis: time.Unix(time.Now().Unix()-int64(params.BeaconConfig().SecondsPerSlot), 0)}
+			s := &Service{
+				payloadAttestationCache: &cache.PayloadAttestationCache{},
+				cfg:                     &config{chain: chainService, p2p: p, initialSync: &mockSync.Sync{}, clock: startup.NewClock(chainService.Genesis, chainService.ValidatorsRoot)}}
+			s.newPayloadAttestationVerifier = tt.verifier
+
+			msg := newPayloadAttestationMessage()
+			buf := new(bytes.Buffer)
+			_, err := p.Encoding().EncodeGossip(buf, msg)
+			require.NoError(t, err)
+
+			topic := p2p.GossipTypeMapping[reflect.TypeFor[*ethpb.PayloadAttestationMessage]()]
+			digest, err := s.currentForkDigest()
+			require.NoError(t, err)
+			topic = s.addDigestToTopic(topic, digest)
+
+			result, err := s.validatePayloadAttestation(ctx, "", &pubsub.Message{
+				Message: &pb.Message{
+					Data:  buf.Bytes(),
+					Topic: &topic,
+				}})
+
+			require.ErrorContains(t, tt.error.Error(), err)
+			require.Equal(t, result, tt.result)
+		})
+	}
+}
+
+func TestValidatePayloadAttestationMessage_Accept(t *testing.T) {
+	ctx := context.Background()
+	p := p2ptest.NewTestP2P(t)
+	chainService := &mock.ChainService{Genesis: time.Unix(time.Now().Unix()-int64(params.BeaconConfig().SecondsPerSlot), 0)}
+	s := &Service{
+		payloadAttestationCache: &cache.PayloadAttestationCache{},
+		cfg:                     &config{chain: chainService, p2p: p, initialSync: &mockSync.Sync{}, clock: startup.NewClock(chainService.Genesis, chainService.ValidatorsRoot)}}
+	s.newPayloadAttestationVerifier = func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+		return &verification.MockPayloadAttestation{}
+	}
+
+	msg := newPayloadAttestationMessage()
+	buf := new(bytes.Buffer)
+	_, err := p.Encoding().EncodeGossip(buf, msg)
+	require.NoError(t, err)
+
+	topic := p2p.GossipTypeMapping[reflect.TypeFor[*ethpb.PayloadAttestationMessage]()]
+	digest, err := s.currentForkDigest()
+	require.NoError(t, err)
+	topic = s.addDigestToTopic(topic, digest)
+
+	result, err := s.validatePayloadAttestation(ctx, "", &pubsub.Message{
+		Message: &pb.Message{
+			Data:  buf.Bytes(),
+			Topic: &topic,
+		}})
+	require.NoError(t, err)
+	require.Equal(t, result, pubsub.ValidationAccept)
+}
+
+func newPayloadAttestationMessage() *ethpb.PayloadAttestationMessage {
+	return &ethpb.PayloadAttestationMessage{
+		ValidatorIndex: 0,
+		Data:           util.HydratePayloadAttestationData(&ethpb.PayloadAttestationData{Slot: 1}),
+		Signature:      make([]byte, fieldparams.BLSSignatureLength),
+	}
+}

beacon-chain/sync/service.go

@@ -37,6 +37,7 @@ import (
 	"github.com/OffchainLabs/prysm/v7/cmd/beacon-chain/flags"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/blocks"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/interfaces"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	leakybucket "github.com/OffchainLabs/prysm/v7/container/leaky-bucket"
@@ -121,6 +122,7 @@ type blockchainService interface {
 	blockchain.FinalizationFetcher
 	blockchain.ForkFetcher
 	blockchain.AttestationReceiver
+	blockchain.PayloadAttestationReceiver
 	blockchain.TimeFetcher
 	blockchain.GenesisFetcher
 	blockchain.CanonicalFetcher
@@ -173,6 +175,7 @@ type Service struct {
 	verifierWaiter                   *verification.InitializerWaiter
 	newBlobVerifier                  verification.NewBlobVerifier
 	newColumnsVerifier               verification.NewDataColumnsVerifier
+	newPayloadAttestationVerifier    verification.NewPayloadAttestationMsgVerifier
 	columnSidecarsExecSingleFlight   singleflight.Group
 	reconstructionSingleFlight       singleflight.Group
 	availableBlocker                 coverage.AvailableBlocker
@@ -182,6 +185,7 @@ type Service struct {
 	slasherEnabled                   bool
 	lcStore                          *lightClient.Store
 	dataColumnLogCh                  chan dataColumnLogEntry
+	payloadAttestationCache          *cache.PayloadAttestationCache
 	digestActions                    perDigestSet
 	subscriptionSpawner              func(func()) // see Service.spawn for details
 }
@@ -190,15 +194,16 @@ type Service struct {
 func NewService(ctx context.Context, opts ...Option) *Service {
 	ctx, cancel := context.WithCancel(ctx)
 	r := &Service{
-		ctx:                   ctx,
-		cancel:                cancel,
-		chainStarted:          abool.New(),
-		cfg:                   &config{clock: startup.NewClock(time.Unix(0, 0), [32]byte{})},
-		slotToPendingBlocks:   gcache.New(pendingBlockExpTime /* exp time */, 0 /* disable janitor */),
-		seenPendingBlocks:     make(map[[32]byte]bool),
-		blkRootToPendingAtts:  make(map[[32]byte][]any),
-		dataColumnLogCh:       make(chan dataColumnLogEntry, 1000),
-		reconstructionRandGen: rand.NewGenerator(),
+		ctx:                     ctx,
+		cancel:                  cancel,
+		chainStarted:            abool.New(),
+		cfg:                     &config{clock: startup.NewClock(time.Unix(0, 0), [32]byte{})},
+		slotToPendingBlocks:     gcache.New(pendingBlockExpTime /* exp time */, 0 /* disable janitor */),
+		seenPendingBlocks:       make(map[[32]byte]bool),
+		blkRootToPendingAtts:    make(map[[32]byte][]any),
+		dataColumnLogCh:         make(chan dataColumnLogEntry, 1000),
+		reconstructionRandGen:   rand.NewGenerator(),
+		payloadAttestationCache: &cache.PayloadAttestationCache{},
 	}
 
 	for _, opt := range opts {
@@ -250,6 +255,12 @@ func newDataColumnsVerifierFromInitializer(ini *verification.Initializer) verifi
 	}
 }
 
+func newPayloadAttestationMessageFromInitializer(ini *verification.Initializer) verification.NewPayloadAttestationMsgVerifier {
+	return func(pa payloadattestation.ROMessage, reqs []verification.Requirement) verification.PayloadAttestationMsgVerifier {
+		return ini.NewPayloadAttestationMsgVerifier(pa, reqs)
+	}
+}
+
 // Start the regular sync service.
 func (s *Service) Start() {
 	v, err := s.verifierWaiter.WaitForInitializer(s.ctx)
@@ -259,6 +270,7 @@ func (s *Service) Start() {
 	}
 	s.newBlobVerifier = newBlobVerifierFromInitializer(v)
 	s.newColumnsVerifier = newDataColumnsVerifierFromInitializer(v)
+	s.newPayloadAttestationVerifier = newPayloadAttestationMessageFromInitializer(v)
 
 	go s.verifierRoutine()
 	go s.startDiscoveryAndSubscriptions()

beacon-chain/verification/BUILD.bazel

@@ -7,20 +7,25 @@ go_library(
         "blob.go",
         "cache.go",
         "data_column.go",
+        "epbs.go",
         "error.go",
         "fake.go",
         "filesystem.go",
         "initializer.go",
+        "initializer_epbs.go",
         "interface.go",
         "log.go",
         "metrics.go",
         "mock.go",
+        "payload_attestation.go",
+        "payload_attestation_mock.go",
         "result.go",
     ],
     importpath = "github.com/OffchainLabs/prysm/v7/beacon-chain/verification",
     visibility = ["//visibility:public"],
     deps = [
         "//beacon-chain/blockchain/kzg:go_default_library",
+        "//beacon-chain/core/gloas:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/peerdas:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
@@ -32,6 +37,7 @@ go_library(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
+        "//consensus-types/epbs/payload-attestation:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",

beacon-chain/verification/data_column_test.go

@@ -1027,10 +1027,10 @@ func TestGetVerifyingStateEdgeCases(t *testing.T) {
 				sc: signatureCache,
 				sr: &mockStateByRooter{sbr: sbrErrorIfCalled(t)}, // Should not be called
 				hsp: &mockHeadStateProvider{
-					headRoot: parentRoot[:],     // Same as parent
-					headSlot: 32,                // Epoch 1
-					headState: fuluState.Copy(), // HeadState (not ReadOnly) for ProcessSlots
-					headStateReadOnly: nil,      // Should not use ReadOnly path
+					headRoot:          parentRoot[:],    // Same as parent
+					headSlot:          32,               // Epoch 1
+					headState:         fuluState.Copy(), // HeadState (not ReadOnly) for ProcessSlots
+					headStateReadOnly: nil,              // Should not use ReadOnly path
 				},
 				fc: &mockForkchoicer{
 					// Return same root for both to simulate same chain
@@ -1045,8 +1045,8 @@ func TestGetVerifyingStateEdgeCases(t *testing.T) {
 		// Wrap to detect HeadState call
 		originalHsp := initializer.shared.hsp.(*mockHeadStateProvider)
 		wrappedHsp := &mockHeadStateProvider{
-			headRoot: originalHsp.headRoot,
-			headSlot: originalHsp.headSlot,
+			headRoot:  originalHsp.headRoot,
+			headSlot:  originalHsp.headSlot,
 			headState: originalHsp.headState,
 		}
 		initializer.shared.hsp = &headStateCallTracker{

beacon-chain/verification/epbs.go

@@ -0,0 +1,24 @@
+package verification
+
+import (
+	"context"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+)
+
+// PayloadAttestationMsgVerifier defines the methods implemented by the ROPayloadAttestation.
+type PayloadAttestationMsgVerifier interface {
+	VerifyCurrentSlot() error
+	VerifyPayloadStatus() error
+	VerifyBlockRootSeen(func([32]byte) bool) error
+	VerifyBlockRootValid(func([32]byte) bool) error
+	VerifyValidatorInPTC(context.Context, state.BeaconState) error
+	VerifySignature(state.BeaconState) error
+	VerifiedPayloadAttestation() (payloadattestation.VerifiedROMessage, error)
+	SatisfyRequirement(Requirement)
+}
+
+// NewPayloadAttestationMsgVerifier is a function signature that can be used by code that needs to be
+// able to mock Initializer.NewPayloadAttestationMsgVerifier without complex setup.
+type NewPayloadAttestationMsgVerifier func(pa payloadattestation.ROMessage, reqs []Requirement) PayloadAttestationMsgVerifier

beacon-chain/verification/initializer_epbs.go

@@ -0,0 +1,15 @@
+package verification
+
+import (
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+)
+
+// NewPayloadAttestationMsgVerifier creates a PayloadAttestationMsgVerifier for a single payload attestation message,
+// with the given set of requirements.
+func (ini *Initializer) NewPayloadAttestationMsgVerifier(pa payloadattestation.ROMessage, reqs []Requirement) *PayloadAttMsgVerifier {
+	return &PayloadAttMsgVerifier{
+		sharedResources: ini.shared,
+		results:         newResults(reqs...),
+		pa:              pa,
+	}
+}

beacon-chain/verification/payload_attestation.go

@@ -0,0 +1,218 @@
+package verification
+
+import (
+	"context"
+	"fmt"
+	"slices"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/gloas"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
+	"github.com/OffchainLabs/prysm/v7/config/params"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+	"github.com/OffchainLabs/prysm/v7/crypto/bls"
+	"github.com/OffchainLabs/prysm/v7/time/slots"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+// RequirementList defines a list of requirements.
+type RequirementList []Requirement
+
+const (
+	RequireCurrentSlot Requirement = iota
+	RequireMessageNotSeen
+	RequireKnownPayloadStatus
+	RequireValidatorInPTC
+	RequireBlockRootSeen
+	RequireBlockRootValid
+	RequireSignatureValid
+)
+
+// PayloadAttGossipRequirements defines the list of requirements for gossip payload attestation messages.
+var PayloadAttGossipRequirements = []Requirement{
+	RequireCurrentSlot,
+	RequireMessageNotSeen,
+	RequireKnownPayloadStatus,
+	RequireValidatorInPTC,
+	RequireBlockRootSeen,
+	RequireBlockRootValid,
+	RequireSignatureValid,
+}
+
+// GossipPayloadAttestationMessageRequirements is a requirement list for gossip payload attestation messages.
+var GossipPayloadAttestationMessageRequirements = RequirementList(PayloadAttGossipRequirements)
+
+var (
+	ErrIncorrectPayloadAttSlot      = errors.New("payload att slot does not match the current slot")
+	ErrIncorrectPayloadAttStatus    = errors.New("unknown payload att status")
+	ErrPayloadAttBlockRootNotSeen   = errors.New("block root not seen")
+	ErrPayloadAttBlockRootInvalid   = errors.New("block root invalid")
+	ErrIncorrectPayloadAttValidator = errors.New("validator not present in payload timeliness committee")
+	ErrInvalidPayloadAttMessage     = errors.New("invalid payload attestation message")
+)
+
+var _ PayloadAttestationMsgVerifier = &PayloadAttMsgVerifier{}
+
+// PayloadAttMsgVerifier is a read-only verifier for payload attestation messages.
+type PayloadAttMsgVerifier struct {
+	*sharedResources
+	results *results
+	pa      payloadattestation.ROMessage
+}
+
+// VerifyCurrentSlot verifies if the current slot matches the expected slot.
+// Represents the following spec verification:
+// [IGNORE] data.slot is the current slot.
+func (v *PayloadAttMsgVerifier) VerifyCurrentSlot() (err error) {
+	defer v.record(RequireCurrentSlot, &err)
+
+	if v.pa.Slot() != v.clock.CurrentSlot() {
+		log.WithFields(logFields(v.pa)).Errorf("does not match current slot %d", v.clock.CurrentSlot())
+		return ErrIncorrectPayloadAttSlot
+	}
+
+	return nil
+}
+
+// VerifyPayloadStatus verifies if the payload status is known.
+// In Gloas, payload status is represented by booleans, so there is no invalid enum to reject.
+func (v *PayloadAttMsgVerifier) VerifyPayloadStatus() (err error) {
+	defer v.record(RequireKnownPayloadStatus, &err)
+	return nil
+}
+
+// VerifyBlockRootSeen verifies if the block root has been seen before.
+// Represents the following spec verification:
+// [IGNORE] The attestation's data.beacon_block_root has been seen (via both gossip and non-gossip sources).
+func (v *PayloadAttMsgVerifier) VerifyBlockRootSeen(parentSeen func([32]byte) bool) (err error) {
+	defer v.record(RequireBlockRootSeen, &err)
+	if parentSeen != nil && parentSeen(v.pa.BeaconBlockRoot()) {
+		return nil
+	}
+	log.WithFields(logFields(v.pa)).Error(ErrPayloadAttBlockRootNotSeen.Error())
+	return ErrPayloadAttBlockRootNotSeen
+}
+
+// VerifyBlockRootValid verifies if the block root is valid.
+// Represents the following spec verification:
+// [REJECT] The beacon block with root data.beacon_block_root passes validation.
+func (v *PayloadAttMsgVerifier) VerifyBlockRootValid(badBlock func([32]byte) bool) (err error) {
+	defer v.record(RequireBlockRootValid, &err)
+
+	if badBlock != nil && badBlock(v.pa.BeaconBlockRoot()) {
+		log.WithFields(logFields(v.pa)).Error(ErrPayloadAttBlockRootInvalid.Error())
+		return ErrPayloadAttBlockRootInvalid
+	}
+
+	return nil
+}
+
+// VerifyValidatorInPTC verifies if the validator is present.
+// Represents the following spec verification:
+// [REJECT] The validator index is within the payload committee in get_ptc(state, data.slot). For the current's slot head state.
+func (v *PayloadAttMsgVerifier) VerifyValidatorInPTC(ctx context.Context, st state.BeaconState) (err error) {
+	defer v.record(RequireValidatorInPTC, &err)
+
+	ptc, err := gloas.PayloadTimelinessCommittee(ctx, st, v.pa.Slot())
+	if err != nil {
+		return err
+	}
+
+	idx := slices.Index(ptc, v.pa.ValidatorIndex())
+	if idx == -1 {
+		log.WithFields(logFields(v.pa)).Error(ErrIncorrectPayloadAttValidator.Error())
+		return ErrIncorrectPayloadAttValidator
+	}
+
+	return nil
+}
+
+// VerifySignature verifies the signature of the payload attestation message.
+// Represents the following spec verification:
+// [REJECT] The signature of payload_attestation_message.signature is valid with respect to the validator index.
+func (v *PayloadAttMsgVerifier) VerifySignature(st state.BeaconState) (err error) {
+	defer v.record(RequireSignatureValid, &err)
+
+	err = validatePayloadAttestationMessageSignature(st, v.pa)
+	if err != nil {
+		if errors.Is(err, signing.ErrSigFailedToVerify) {
+			log.WithFields(logFields(v.pa)).Error("Signature failed to validate")
+		} else {
+			log.WithFields(logFields(v.pa)).WithError(err).Error("Could not validate signature")
+		}
+		return err
+	}
+
+	return nil
+}
+
+// VerifiedPayloadAttestation returns a verified payload attestation message by checking all requirements.
+func (v *PayloadAttMsgVerifier) VerifiedPayloadAttestation() (payloadattestation.VerifiedROMessage, error) {
+	if v.results.allSatisfied() {
+		return payloadattestation.NewVerifiedROMessage(v.pa), nil
+	}
+	return payloadattestation.VerifiedROMessage{}, ErrInvalidPayloadAttMessage
+}
+
+// SatisfyRequirement allows the caller to manually mark a requirement as satisfied.
+func (v *PayloadAttMsgVerifier) SatisfyRequirement(req Requirement) {
+	v.record(req, nil)
+}
+
+// ValidatePayloadAttestationMessageSignature verifies the signature of a payload attestation message.
+func validatePayloadAttestationMessageSignature(st state.BeaconState, payloadAtt payloadattestation.ROMessage) error {
+	val, err := st.ValidatorAtIndex(payloadAtt.ValidatorIndex())
+	if err != nil {
+		return err
+	}
+
+	pub, err := bls.PublicKeyFromBytes(val.PublicKey)
+	if err != nil {
+		return err
+	}
+
+	s := payloadAtt.Signature()
+	sig, err := bls.SignatureFromBytes(s[:])
+	if err != nil {
+		return err
+	}
+
+	currentEpoch := slots.ToEpoch(st.Slot())
+	domain, err := signing.Domain(st.Fork(), currentEpoch, params.BeaconConfig().DomainPTCAttester, st.GenesisValidatorsRoot())
+	if err != nil {
+		return err
+	}
+
+	root, err := payloadAtt.SigningRoot(domain)
+	if err != nil {
+		return err
+	}
+
+	if !sig.Verify(pub, root[:]) {
+		return signing.ErrSigFailedToVerify
+	}
+	return nil
+}
+
+// record records the result of a requirement verification.
+func (v *PayloadAttMsgVerifier) record(req Requirement, err *error) {
+	if err == nil || *err == nil {
+		v.results.record(req, nil)
+		return
+	}
+
+	v.results.record(req, *err)
+}
+
+// logFields returns log fields for a ROMessage instance.
+func logFields(payload payloadattestation.ROMessage) logrus.Fields {
+	return logrus.Fields{
+		"slot":              payload.Slot(),
+		"validatorIndex":    payload.ValidatorIndex(),
+		"signature":         fmt.Sprintf("%#x", payload.Signature()),
+		"beaconBlockRoot":   fmt.Sprintf("%#x", payload.BeaconBlockRoot()),
+		"payloadPresent":    payload.PayloadPresent(),
+		"blobDataAvailable": payload.BlobDataAvailable(),
+	}
+}

beacon-chain/verification/payload_attestation_mock.go

@@ -0,0 +1,51 @@
+package verification
+
+import (
+	"context"
+
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/state"
+	payloadattestation "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation"
+)
+
+type MockPayloadAttestation struct {
+	ErrIncorrectPayloadAttSlot      error
+	ErrIncorrectPayloadAttStatus    error
+	ErrIncorrectPayloadAttValidator error
+	ErrPayloadAttBlockRootNotSeen   error
+	ErrPayloadAttBlockRootInvalid   error
+	ErrInvalidPayloadAttMessage     error
+	ErrInvalidMessageSignature      error
+	ErrUnsatisfiedRequirement       error
+}
+
+var _ PayloadAttestationMsgVerifier = &MockPayloadAttestation{}
+
+func (m *MockPayloadAttestation) VerifyCurrentSlot() error {
+	return m.ErrIncorrectPayloadAttSlot
+}
+
+func (m *MockPayloadAttestation) VerifyPayloadStatus() error {
+	return m.ErrIncorrectPayloadAttStatus
+}
+
+func (m *MockPayloadAttestation) VerifyValidatorInPTC(ctx context.Context, st state.BeaconState) error {
+	return m.ErrIncorrectPayloadAttValidator
+}
+
+func (m *MockPayloadAttestation) VerifyBlockRootSeen(func([32]byte) bool) error {
+	return m.ErrPayloadAttBlockRootNotSeen
+}
+
+func (m *MockPayloadAttestation) VerifyBlockRootValid(func([32]byte) bool) error {
+	return m.ErrPayloadAttBlockRootInvalid
+}
+
+func (m *MockPayloadAttestation) VerifySignature(st state.BeaconState) (err error) {
+	return m.ErrInvalidMessageSignature
+}
+
+func (m *MockPayloadAttestation) VerifiedPayloadAttestation() (payloadattestation.VerifiedROMessage, error) {
+	return payloadattestation.VerifiedROMessage{}, nil
+}
+
+func (m *MockPayloadAttestation) SatisfyRequirement(req Requirement) {}

changelog/aarshkshah1992_set-beacon-node-options.md

@@ -0,0 +1,3 @@
+### Added
+
+- Set beacon node options after reading the config file.

changelog/james-prysm_grpc-fallback.md

@@ -0,0 +1,7 @@
+### Changed
+
+- gRPC fallback now matches rest api implementation and will also check and connect to only synced nodes.
+
+### Removed
+
+- gRPC resolver for load balancing, the new implementation matches rest api's so we should remove the resolver so it's handled the same way for consistency.

changelog/james-prysm_host-fallback-cleanup.md

@@ -0,0 +1,11 @@
+### Ignored 
+
+- moved finding healthy node logic to connection provider and other various cleanup on naming.
+
+### Changed
+
+- Improved node fallback logs.
+
+### Fixed
+
+- a potential race condition when switching hosts quickly and reconnecting to same host on an old connection.

changelog/jtraglia-improve-ethspecify-integration.md

@@ -0,0 +1,3 @@
+### Changed
+
+- Improved integrations with ethspecify so specrefs can be used throughout the codebase.

changelog/pvl-golangci-tests.md

@@ -0,0 +1,3 @@
+### Ignored
+
+- Updated golangci to run lint on tests too.

changelog/syjn99_docs-ssz-ql.md

@@ -0,0 +1,3 @@
+### Ignored
+
+- Add handy documentation for SSZ Query package (`encoding/ssz/query`).

changelog/tt_run-gofmt.md

@@ -0,0 +1,2 @@
+### Ignored
+- Run go fmt

cmd/beacon-chain/main.go

@@ -367,17 +367,8 @@ func startNode(ctx *cli.Context, cancel context.CancelFunc) error {
 		backfill.BeaconNodeOptions,
 		das.BeaconNodeOptions,
 	}
-	for _, of := range optFuncs {
-		ofo, err := of(ctx)
-		if err != nil {
-			return err
-		}
-		if ofo != nil {
-			opts = append(opts, ofo...)
-		}
-	}
 
-	beacon, err := node.New(ctx, cancel, opts...)
+	beacon, err := node.New(ctx, cancel, optFuncs, opts...)
 	if err != nil {
 		return fmt.Errorf("unable to start beacon node: %w", err)
 	}

consensus-types/epbs/payload-attestation/BUILD.bazel

@@ -0,0 +1,15 @@
+load("@prysm//tools/go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["readonly_message.go"],
+    importpath = "github.com/OffchainLabs/prysm/v7/consensus-types/epbs/payload-attestation",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//beacon-chain/core/signing:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+    ],
+)

consensus-types/epbs/payload-attestation/readonly_message.go

@@ -0,0 +1,87 @@
+package payloadattestation
+
+import (
+	"github.com/OffchainLabs/prysm/v7/beacon-chain/core/signing"
+	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
+	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
+	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
+	"github.com/pkg/errors"
+)
+
+var (
+	errNilPayloadAttMessage   = errors.New("received nil payload attestation message")
+	errNilPayloadAttData      = errors.New("received nil payload attestation data")
+	errNilPayloadAttSignature = errors.New("received nil payload attestation signature")
+)
+
+// ROMessage represents a read-only payload attestation message.
+type ROMessage struct {
+	m *ethpb.PayloadAttestationMessage
+}
+
+// validatePayloadAtt checks if the given payload attestation message is valid.
+func validatePayloadAtt(m *ethpb.PayloadAttestationMessage) error {
+	if m == nil {
+		return errNilPayloadAttMessage
+	}
+	if m.Data == nil {
+		return errNilPayloadAttData
+	}
+	if len(m.Signature) == 0 {
+		return errNilPayloadAttSignature
+	}
+	return nil
+}
+
+// NewReadOnly creates a new ReadOnly instance after validating the message.
+func NewReadOnly(m *ethpb.PayloadAttestationMessage) (ROMessage, error) {
+	if err := validatePayloadAtt(m); err != nil {
+		return ROMessage{}, err
+	}
+	return ROMessage{m}, nil
+}
+
+// ValidatorIndex returns the validator index from the payload attestation message.
+func (r *ROMessage) ValidatorIndex() primitives.ValidatorIndex {
+	return r.m.ValidatorIndex
+}
+
+// Signature returns the signature from the payload attestation message.
+func (r *ROMessage) Signature() [96]byte {
+	return bytesutil.ToBytes96(r.m.Signature)
+}
+
+// BeaconBlockRoot returns the beacon block root from the payload attestation message.
+func (r *ROMessage) BeaconBlockRoot() [32]byte {
+	return bytesutil.ToBytes32(r.m.Data.BeaconBlockRoot)
+}
+
+// Slot returns the slot from the payload attestation message.
+func (r *ROMessage) Slot() primitives.Slot {
+	return r.m.Data.Slot
+}
+
+// PayloadPresent returns whether the payload was present.
+func (r *ROMessage) PayloadPresent() bool {
+	return r.m.Data.PayloadPresent
+}
+
+// BlobDataAvailable returns whether blob data was available.
+func (r *ROMessage) BlobDataAvailable() bool {
+	return r.m.Data.BlobDataAvailable
+}
+
+// SigningRoot returns the signing root from the payload attestation message.
+func (r *ROMessage) SigningRoot(domain []byte) ([32]byte, error) {
+	return signing.ComputeSigningRoot(r.m.Data, domain)
+}
+
+// VerifiedROMessage represents a verified read-only payload attestation message.
+type VerifiedROMessage struct {
+	ROMessage
+}
+
+// NewVerifiedROMessage creates a new VerifiedROMessage instance after validating the message.
+func NewVerifiedROMessage(r ROMessage) VerifiedROMessage {
+	return VerifiedROMessage{r}
+}

encoding/ssz/query/doc.md

@@ -0,0 +1,190 @@
+# SSZ Query Package
+
+The `encoding/ssz/query` package provides a system for analyzing and querying SSZ ([Simple Serialize](https://github.com/ethereum/consensus-specs/blob/master/ssz/simple-serialize.md)) data structures, as well as generating Merkle proofs from them. It enables runtime analysis of SSZ-serialized Go objects with reflection, path-based queries through nested structures, generalized index calculation, and Merkle proof generation.
+
+This package is designed to be generic. It operates on arbitrary SSZ-serialized Go values at runtime, so the same query/proof machinery applies equally to any SSZ type, including the BeaconState/BeaconBlock.
+
+## Usage Example
+
+```go
+// 1. Analyze an SSZ object
+block := &ethpb.BeaconBlock{...}
+info, err := query.AnalyzeObject(block)
+
+// 2. Parse a path
+path, err := query.ParsePath(".body.attestations[0].data.slot")
+
+// 3. Get the generalized index
+gindex, err := query.GetGeneralizedIndexFromPath(info, path)
+
+// 4. Generate a Merkle proof
+proof, err := info.Prove(gindex)
+
+// 5. Get offset and length to slice the SSZ-encoded bytes
+sszBytes, _ := block.MarshalSSZ()
+_, offset, length, err := query.CalculateOffsetAndLength(info, path)
+// slotBytes contains the SSZ-encoded value at the queried path
+slotBytes := sszBytes[offset : offset+length]
+```
+
+## Exported API
+
+The main exported API consists of:
+
+```go
+// AnalyzeObject analyzes an SSZ object and returns its structural information
+func AnalyzeObject(obj SSZObject) (*SszInfo, error)
+
+// ParsePath parses a path string like ".field1.field2[0].field3"
+func ParsePath(rawPath string) (Path, error)
+
+// CalculateOffsetAndLength computes byte offset and length for a path within an SSZ object
+func CalculateOffsetAndLength(sszInfo *SszInfo, path Path) (*SszInfo, uint64, uint64, error)
+
+// GetGeneralizedIndexFromPath calculates the generalized index for a given path
+func GetGeneralizedIndexFromPath(info *SszInfo, path Path) (uint64, error)
+
+// Prove generates a Merkle proof for a target generalized index
+func (s *SszInfo) Prove(gindex uint64) (*fastssz.Proof, error)
+```
+
+## Type System
+
+### SSZ Types
+
+The package now supports [all standard SSZ types](https://github.com/ethereum/consensus-specs/blob/master/ssz/simple-serialize.md#typing) except `ProgressiveList`, `ProgressiveContainer`, `ProgressiveBitlist`, `Union`, and `CompatibleUnion`.
+
+### Core Data Structures
+
+#### `SszInfo`
+
+The `SszInfo` structure contains complete structural metadata for an SSZ type:
+
+```go
+type SszInfo struct {
+   sszType       SszType           // SSZ Type classification
+   typ           reflect.Type      // Go reflect.Type
+   source        SSZObject         // Original SSZObject reference. Mostly used for reusing SSZ methods like `HashTreeRoot`.
+   isVariable    bool              // True if contains variable-size fields
+
+   // Composite types have corresponding metadata. Other fields would be nil except for the current type.
+   containerInfo *containerInfo
+   listInfo      *listInfo
+   vectorInfo    *vectorInfo
+   bitlistInfo   *bitlistInfo
+   bitvectorInfo *bitvectorInfo
+}
+```
+
+#### `Path`
+
+The `Path` structure represents navigation paths through SSZ structures. It supports accessing a field by field name, accessing an element by index (list/vector type), and finding the length of homogenous collection types. The `ParsePath` function parses a raw string into a `Path` instance, which is commonly used in other APIs like `CalculateOffsetAndLength` and `GetGeneralizedIndexFromPath`.
+
+```go
+type Path struct {
+   Length   bool           // Flag for length queries (e.g., len(.field))
+   Elements []PathElement  // Sequence of field accesses and indices
+}
+
+type PathElement struct {
+   Name  string  // Field name
+   Index *uint64 // list/vector index (nil if not an index access)
+}
+```
+
+## Implementation Details
+
+### Type Analysis (`analyzer.go`)
+
+The `AnalyzeObject` function performs recursive type introspection using Go reflection:
+
+1. **Type Inspection** - Examines Go `reflect.Value` to determine SSZ type
+   - Basic types (`uint8`, `uint16`, `uint32`, `uint64`, `bool`): `SSZType` constants
+   - Slices: Determined from struct tags (`ssz-size` for vectors, `ssz-max` for lists). There is a related [write-up](https://hackmd.io/@junsong/H101DKnwxl) regarding struct tags.
+   - Structs: Analyzed as Containers with field ordering from JSON tags
+   - Pointers: Dereferenced automatically
+
+2. **Variable-Length Population** - Determines actual sizes at runtime
+   - For lists: Iterates elements, caches sizes for variable-element lists
+   - For containers: Recursively populates variable fields, adjusts offsets
+   - For bitlists: Decodes bit length from bitvector
+
+3. **Offset Calculation** - Computes byte positions within serialized data
+   - Fixed-size fields: Offset = sum of preceding field sizes
+   - Variable-size fields: Offset stored as 4-byte pointer entries
+
+### Path Parsing (`path.go`)
+
+The `ParsePath` function parses path strings with the following rules:
+
+- **Dot notation**: `.field1.field2` for field access
+- **Array indexing**: `[0]`, `[42]` for element access
+- **Length queries**: `len(.field)` for list/vector lengths
+- **Character set**: Only `[A-Za-z0-9._\[\]\(\)]` allowed
+
+Example:
+```go
+path, _ := ParsePath(".nested.array_field[5].inner_field")
+// Returns: Path{
+//   Elements: [
+//     PathElement{Name: "nested"},
+//     PathElement{Name: "array_field", Index: <Pointer to uint64(5)>},
+//     PathElement{Name: "inner_field"}
+//   ]
+// }
+```
+
+### Generalized Index Calculation (`generalized_index.go`)
+
+The generalized index is a tree position identifier. This package follows the [Ethereum consensus-specs](https://github.com/ethereum/consensus-specs/blob/master/ssz/merkle-proofs.md#generalized-merkle-tree-index) to calculate the generalized index.
+
+### Merkle Proof Generation (`merkle_proof.go`, `proof_collector.go`)
+
+The `Prove` method generates Merkle proofs using a single-sweep merkleization algorithm:
+
+#### Algorithm Overview
+
+**Key Terms:**
+
+- **Target gindex** (generalized index): The position of the SSZ element you want to prove, expressed as a generalized Merkle tree index. Stored in `Proof.Index`.
+  - Note: The generalized index for root is 1.
+- **Registered gindices**: The set of tree positions whose node hashes must be captured during merkleization in order to later assemble the proof.
+- **Sibling node**: The node that shares the same parent as another node.
+- **Leaf value**: The 32-byte hash of the target node (the node being proven). Stored in `Proof.Leaf`.
+
+**Phases:**
+
+1. **Registration Phase** (`addTarget`)
+> Goal: determine exactly which sibling hashes are needed for the proof.
+
+   - Record the target gindex as the proof target.
+   - Starting from the target node, walk the Merkle tree from the leaf (target gindex) to the root (gindex = 1).
+   - At each step:
+     - Compute and register the sibling gindex (`i XOR 1`) as “must collect”.
+     - Move to the parent (`i = i/2`).
+   - This produces the full set of registered gindices (the sibling nodes on the target-to-root path).
+
+2. **Merkleization Phase** (`merkleize`)
+> Goal: recursively merkleize the tree and capture the needed hashes.
+
+   - Recursively traverse the SSZ structure and compute Merkle tree node hashes from leaves to root.
+   - Whenever the traversal computes a node whose gindex is in registered gindices, store that node’s hash for later proof construction.
+
+3. **Proof Assembly Phase** (`toProof`)
+> Goal: create the final `fastssz.Proof` object in the correct format and order.
+
+```go
+// Proof represents a merkle proof against a general index.
+type Proof struct {
+	Index  int
+	Leaf   []byte
+	Hashes [][]byte
+}
+```
+
+   - Set `Proof.Index` to the target gindex.
+   - Set `Proof.Leaf` to the 32-byte hash of the target node.
+   - Build `Proof.Hashes` by walking from the target node up to (but not including) the root:
+     - At node `i`, append the stored hash for the sibling (`i XOR 1`).
+     - Move to the parent (`i = i/2`).
+   - The resulting `Proof.Hashes` is ordered from the target level upward, containing one sibling hash per tree level on the path to the root.

monitoring/prometheus/service_test.go

@@ -26,21 +26,21 @@ func TestLifecycle(t *testing.T) {
 	port := 1000 + rand.Intn(1000)
 	prometheusService := NewService(t.Context(), fmt.Sprintf(":%d", port), nil)
 	prometheusService.Start()
-    // Actively wait until the service responds on /metrics (faster and less flaky than a fixed sleep)
-    deadline := time.Now().Add(3 * time.Second)
-    for {
-        if time.Now().After(deadline) {
-            t.Fatalf("metrics endpoint not ready within timeout")
-        }
-        resp, err := http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))
-        if err == nil {
-            _ = resp.Body.Close()
-            if resp.StatusCode == http.StatusOK {
-                break
-            }
-        }
-        time.Sleep(50 * time.Millisecond)
-    }
+	// Actively wait until the service responds on /metrics (faster and less flaky than a fixed sleep)
+	deadline := time.Now().Add(3 * time.Second)
+	for {
+		if time.Now().After(deadline) {
+			t.Fatalf("metrics endpoint not ready within timeout")
+		}
+		resp, err := http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))
+		if err == nil {
+			_ = resp.Body.Close()
+			if resp.StatusCode == http.StatusOK {
+				break
+			}
+		}
+		time.Sleep(50 * time.Millisecond)
+	}
 
 	// Query the service to ensure it really started.
 	resp, err := http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))
@@ -49,18 +49,18 @@ func TestLifecycle(t *testing.T) {
 
 	err = prometheusService.Stop()
 	require.NoError(t, err)
-    // Actively wait until the service stops responding on /metrics
-    deadline = time.Now().Add(3 * time.Second)
-    for {
-        if time.Now().After(deadline) {
-            t.Fatalf("metrics endpoint still reachable after timeout")
-        }
-        _, err = http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))
-        if err != nil {
-            break
-        }
-        time.Sleep(50 * time.Millisecond)
-    }
+	// Actively wait until the service stops responding on /metrics
+	deadline = time.Now().Add(3 * time.Second)
+	for {
+		if time.Now().After(deadline) {
+			t.Fatalf("metrics endpoint still reachable after timeout")
+		}
+		_, err = http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))
+		if err != nil {
+			break
+		}
+		time.Sleep(50 * time.Millisecond)
+	}
 
 	// Query the service to ensure it really stopped.
 	_, err = http.Get(fmt.Sprintf("http://localhost:%d/metrics", port))

specrefs/README.md

@@ -11,17 +11,12 @@ Install `ethspecify` with the following command:
 pipx install ethspecify
 ```
 
-> [!NOTE]
-> You can run `ethspecify <cmd>` in the `specrefs` directory or
-> `ethspecify <cmd> --path=specrefs` from the project's root directory.
-
 ## Maintenance
 
 When adding support for a new specification version, follow these steps:
 
-0. Change directory into the `specrefs` directory.
 1. Update the version in `.ethspecify.yml` configuration.
-2. Run `ethspecify process` to update/populate specrefs.
+2. Run `ethspecify` to update/populate specrefs.
 3. Run `ethspecify check` to check specrefs.
 4. If there are errors, use the error message as a guide to fix the issue. If
    there are new specrefs with empty sources, implement/locate each item and

specrefs/configs.yml

@@ -1,4 +1,4 @@
-- name: AGGREGATE_DUE_BPS
+- name: AGGREGATE_DUE_BPS#phase0
   sources:
     - file: config/params/config.go
       search: AggregateDueBPS\s+primitives.BP
@@ -8,7 +8,14 @@
     AGGREGATE_DUE_BPS: uint64 = 6667
     </spec>
 
-- name: ALTAIR_FORK_EPOCH
+- name: AGGREGATE_DUE_BPS_GLOAS#gloas
+  sources: []
+  spec: |
+    <spec config_var="AGGREGATE_DUE_BPS_GLOAS" fork="gloas" hash="34aa3164">
+    AGGREGATE_DUE_BPS_GLOAS: uint64 = 5000
+    </spec>
+
+- name: ALTAIR_FORK_EPOCH#altair
   sources:
     - file: config/params/config.go
       search: AltairForkEpoch\s+primitives.Epoch
@@ -18,7 +25,7 @@
     ALTAIR_FORK_EPOCH: Epoch = 74240
     </spec>
 
-- name: ALTAIR_FORK_VERSION
+- name: ALTAIR_FORK_VERSION#altair
   sources:
     - file: config/params/config.go
       search: AltairForkVersion\s+\[]byte
@@ -28,7 +35,7 @@
     ALTAIR_FORK_VERSION: Version = '0x01000000'
     </spec>
 
-- name: ATTESTATION_DUE_BPS
+- name: ATTESTATION_DUE_BPS#phase0
   sources:
     - file: config/params/config.go
       search: AttestationDueBPS\s+primitives.BP
@@ -38,7 +45,14 @@
     ATTESTATION_DUE_BPS: uint64 = 3333
     </spec>
 
-- name: ATTESTATION_PROPAGATION_SLOT_RANGE
+- name: ATTESTATION_DUE_BPS_GLOAS#gloas
+  sources: []
+  spec: |
+    <spec config_var="ATTESTATION_DUE_BPS_GLOAS" fork="gloas" hash="3863c1ef">
+    ATTESTATION_DUE_BPS_GLOAS: uint64 = 2500
+    </spec>
+
+- name: ATTESTATION_PROPAGATION_SLOT_RANGE#phase0
   sources:
     - file: config/params/config.go
       search: AttestationPropagationSlotRange\s+primitives.Slot
@@ -48,7 +62,7 @@
     ATTESTATION_PROPAGATION_SLOT_RANGE = 32
     </spec>
 
-- name: ATTESTATION_SUBNET_COUNT
+- name: ATTESTATION_SUBNET_COUNT#phase0
   sources:
     - file: config/params/config.go
       search: AttestationSubnetCount\s+uint64
@@ -58,7 +72,7 @@
     ATTESTATION_SUBNET_COUNT = 64
     </spec>
 
-- name: ATTESTATION_SUBNET_EXTRA_BITS
+- name: ATTESTATION_SUBNET_EXTRA_BITS#phase0
   sources:
     - file: config/params/config.go
       search: AttestationSubnetExtraBits\s+uint64
@@ -68,7 +82,7 @@
     ATTESTATION_SUBNET_EXTRA_BITS = 0
     </spec>
 
-- name: ATTESTATION_SUBNET_PREFIX_BITS
+- name: ATTESTATION_SUBNET_PREFIX_BITS#phase0
   sources:
     - file: config/params/config.go
       search: AttestationSubnetPrefixBits\s+uint64
@@ -78,7 +92,7 @@
     ATTESTATION_SUBNET_PREFIX_BITS: int = 6
     </spec>
 
-- name: BALANCE_PER_ADDITIONAL_CUSTODY_GROUP
+- name: BALANCE_PER_ADDITIONAL_CUSTODY_GROUP#fulu
   sources:
     - file: config/params/config.go
       search: BalancePerAdditionalCustodyGroup\s+uint64
@@ -88,7 +102,7 @@
     BALANCE_PER_ADDITIONAL_CUSTODY_GROUP: Gwei = 32000000000
     </spec>
 
-- name: BELLATRIX_FORK_EPOCH
+- name: BELLATRIX_FORK_EPOCH#bellatrix
   sources:
     - file: config/params/config.go
       search: BellatrixForkEpoch\s+primitives.Epoch
@@ -98,7 +112,7 @@
     BELLATRIX_FORK_EPOCH: Epoch = 144896
     </spec>
 
-- name: BELLATRIX_FORK_VERSION
+- name: BELLATRIX_FORK_VERSION#bellatrix
   sources:
     - file: config/params/config.go
       search: BellatrixForkVersion\s+\[]byte
@@ -108,7 +122,7 @@
     BELLATRIX_FORK_VERSION: Version = '0x02000000'
     </spec>
 
-- name: BLOB_SCHEDULE
+- name: BLOB_SCHEDULE#fulu
   sources:
     - file: config/params/config.go
       search: BlobSchedule\s+\[]BlobScheduleEntry
@@ -127,7 +141,7 @@
     )
     </spec>
 
-- name: BLOB_SIDECAR_SUBNET_COUNT
+- name: BLOB_SIDECAR_SUBNET_COUNT#deneb
   sources:
     - file: config/params/config.go
       search: BlobsidecarSubnetCount\s+uint64
@@ -137,7 +151,7 @@
     BLOB_SIDECAR_SUBNET_COUNT = 6
     </spec>
 
-- name: BLOB_SIDECAR_SUBNET_COUNT_ELECTRA
+- name: BLOB_SIDECAR_SUBNET_COUNT_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: BlobsidecarSubnetCountElectra\s+uint64
@@ -147,7 +161,7 @@
     BLOB_SIDECAR_SUBNET_COUNT_ELECTRA = 9
     </spec>
 
-- name: CAPELLA_FORK_EPOCH
+- name: CAPELLA_FORK_EPOCH#capella
   sources:
     - file: config/params/config.go
       search: CapellaForkEpoch\s+primitives.Epoch
@@ -157,7 +171,7 @@
     CAPELLA_FORK_EPOCH: Epoch = 194048
     </spec>
 
-- name: CAPELLA_FORK_VERSION
+- name: CAPELLA_FORK_VERSION#capella
   sources:
     - file: config/params/config.go
       search: CapellaForkVersion\s+\[]byte
@@ -167,7 +181,7 @@
     CAPELLA_FORK_VERSION: Version = '0x03000000'
     </spec>
 
-- name: CHURN_LIMIT_QUOTIENT
+- name: CHURN_LIMIT_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: ChurnLimitQuotient\s+uint64
@@ -177,7 +191,7 @@
     CHURN_LIMIT_QUOTIENT: uint64 = 65536
     </spec>
 
-- name: CONTRIBUTION_DUE_BPS
+- name: CONTRIBUTION_DUE_BPS#altair
   sources:
     - file: config/params/config.go
       search: ContributionDueBPS\s+primitives.BP
@@ -187,7 +201,14 @@
     CONTRIBUTION_DUE_BPS: uint64 = 6667
     </spec>
 
-- name: CUSTODY_REQUIREMENT
+- name: CONTRIBUTION_DUE_BPS_GLOAS#gloas
+  sources: []
+  spec: |
+    <spec config_var="CONTRIBUTION_DUE_BPS_GLOAS" fork="gloas" hash="0ead2ac1">
+    CONTRIBUTION_DUE_BPS_GLOAS: uint64 = 5000
+    </spec>
+
+- name: CUSTODY_REQUIREMENT#fulu
   sources:
     - file: config/params/config.go
       search: CustodyRequirement\s+uint64.*yaml:"CUSTODY_REQUIREMENT"
@@ -197,7 +218,7 @@
     CUSTODY_REQUIREMENT = 4
     </spec>
 
-- name: DATA_COLUMN_SIDECAR_SUBNET_COUNT
+- name: DATA_COLUMN_SIDECAR_SUBNET_COUNT#fulu
   sources:
     - file: config/params/config.go
       search: DataColumnSidecarSubnetCount\s+uint64
@@ -207,7 +228,7 @@
     DATA_COLUMN_SIDECAR_SUBNET_COUNT = 128
     </spec>
 
-- name: DENEB_FORK_EPOCH
+- name: DENEB_FORK_EPOCH#deneb
   sources:
     - file: config/params/config.go
       search: DenebForkEpoch\s+primitives.Epoch
@@ -217,7 +238,7 @@
     DENEB_FORK_EPOCH: Epoch = 269568
     </spec>
 
-- name: DENEB_FORK_VERSION
+- name: DENEB_FORK_VERSION#deneb
   sources:
     - file: config/params/config.go
       search: DenebForkVersion\s+\[]byte
@@ -227,7 +248,7 @@
     DENEB_FORK_VERSION: Version = '0x04000000'
     </spec>
 
-- name: EJECTION_BALANCE
+- name: EJECTION_BALANCE#phase0
   sources:
     - file: config/params/config.go
       search: EjectionBalance\s+uint64
@@ -237,7 +258,7 @@
     EJECTION_BALANCE: Gwei = 16000000000
     </spec>
 
-- name: ELECTRA_FORK_EPOCH
+- name: ELECTRA_FORK_EPOCH#electra
   sources:
     - file: config/params/config.go
       search: ElectraForkEpoch\s+primitives.Epoch
@@ -247,7 +268,7 @@
     ELECTRA_FORK_EPOCH: Epoch = 364032
     </spec>
 
-- name: ELECTRA_FORK_VERSION
+- name: ELECTRA_FORK_VERSION#electra
   sources:
     - file: config/params/config.go
       search: ElectraForkVersion\s+\[]byte
@@ -257,7 +278,7 @@
     ELECTRA_FORK_VERSION: Version = '0x05000000'
     </spec>
 
-- name: EPOCHS_PER_SUBNET_SUBSCRIPTION
+- name: EPOCHS_PER_SUBNET_SUBSCRIPTION#phase0
   sources:
     - file: config/params/config.go
       search: EpochsPerSubnetSubscription\s+uint64
@@ -267,7 +288,7 @@
     EPOCHS_PER_SUBNET_SUBSCRIPTION = 256
     </spec>
 
-- name: ETH1_FOLLOW_DISTANCE
+- name: ETH1_FOLLOW_DISTANCE#phase0
   sources:
     - file: config/params/config.go
       search: Eth1FollowDistance\s+uint64
@@ -277,7 +298,7 @@
     ETH1_FOLLOW_DISTANCE: uint64 = 2048
     </spec>
 
-- name: FULU_FORK_EPOCH
+- name: FULU_FORK_EPOCH#fulu
   sources:
     - file: config/params/config.go
       search: FuluForkEpoch\s+primitives.Epoch
@@ -287,7 +308,7 @@
     FULU_FORK_EPOCH: Epoch = 411392
     </spec>
 
-- name: FULU_FORK_VERSION
+- name: FULU_FORK_VERSION#fulu
   sources:
     - file: config/params/config.go
       search: FuluForkVersion\s+\[]byte
@@ -297,7 +318,7 @@
     FULU_FORK_VERSION: Version = '0x06000000'
     </spec>
 
-- name: GENESIS_DELAY
+- name: GENESIS_DELAY#phase0
   sources:
     - file: config/params/config.go
       search: GenesisDelay\s+uint64
@@ -307,7 +328,7 @@
     GENESIS_DELAY: uint64 = 604800
     </spec>
 
-- name: GENESIS_FORK_VERSION
+- name: GENESIS_FORK_VERSION#phase0
   sources:
     - file: config/params/config.go
       search: GenesisForkVersion\s+\[]byte
@@ -317,7 +338,21 @@
     GENESIS_FORK_VERSION: Version = '0x00000000'
     </spec>
 
-- name: INACTIVITY_SCORE_BIAS
+- name: GLOAS_FORK_EPOCH#gloas
+  sources: []
+  spec: |
+    <spec config_var="GLOAS_FORK_EPOCH" fork="gloas" hash="c25152cf">
+    GLOAS_FORK_EPOCH: Epoch = 18446744073709551615
+    </spec>
+
+- name: GLOAS_FORK_VERSION#gloas
+  sources: []
+  spec: |
+    <spec config_var="GLOAS_FORK_VERSION" fork="gloas" hash="c1c5c007">
+    GLOAS_FORK_VERSION: Version = '0x07000000'
+    </spec>
+
+- name: INACTIVITY_SCORE_BIAS#altair
   sources:
     - file: config/params/config.go
       search: InactivityScoreBias\s+uint64
@@ -327,7 +362,7 @@
     INACTIVITY_SCORE_BIAS: uint64 = 4
     </spec>
 
-- name: INACTIVITY_SCORE_RECOVERY_RATE
+- name: INACTIVITY_SCORE_RECOVERY_RATE#altair
   sources:
     - file: config/params/config.go
       search: InactivityScoreRecoveryRate\s+uint64
@@ -337,7 +372,7 @@
     INACTIVITY_SCORE_RECOVERY_RATE: uint64 = 16
     </spec>
 
-- name: MAXIMUM_GOSSIP_CLOCK_DISPARITY
+- name: MAXIMUM_GOSSIP_CLOCK_DISPARITY#phase0
   sources:
     - file: config/params/config.go
       search: MaximumGossipClockDisparity\s+uint64
@@ -347,7 +382,7 @@
     MAXIMUM_GOSSIP_CLOCK_DISPARITY = 500
     </spec>
 
-- name: MAX_BLOBS_PER_BLOCK
+- name: MAX_BLOBS_PER_BLOCK#deneb
   sources:
     - file: config/params/config.go
       search: DeprecatedMaxBlobsPerBlock\s+int
@@ -357,7 +392,7 @@
     MAX_BLOBS_PER_BLOCK: uint64 = 6
     </spec>
 
-- name: MAX_BLOBS_PER_BLOCK_ELECTRA
+- name: MAX_BLOBS_PER_BLOCK_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: DeprecatedMaxBlobsPerBlockElectra\s+int
@@ -367,7 +402,7 @@
     MAX_BLOBS_PER_BLOCK_ELECTRA: uint64 = 9
     </spec>
 
-- name: MAX_PAYLOAD_SIZE
+- name: MAX_PAYLOAD_SIZE#phase0
   sources:
     - file: config/params/config.go
       search: MaxPayloadSize\s+uint64
@@ -377,7 +412,7 @@
     MAX_PAYLOAD_SIZE = 10485760
     </spec>
 
-- name: MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT
+- name: MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT#deneb
   sources:
     - file: config/params/config.go
       search: MaxPerEpochActivationChurnLimit\s+uint64
@@ -387,7 +422,7 @@
     MAX_PER_EPOCH_ACTIVATION_CHURN_LIMIT: uint64 = 8
     </spec>
 
-- name: MAX_PER_EPOCH_ACTIVATION_EXIT_CHURN_LIMIT
+- name: MAX_PER_EPOCH_ACTIVATION_EXIT_CHURN_LIMIT#electra
   sources:
     - file: config/params/config.go
       search: MaxPerEpochActivationExitChurnLimit\s+uint64
@@ -397,7 +432,7 @@
     MAX_PER_EPOCH_ACTIVATION_EXIT_CHURN_LIMIT: Gwei = 256000000000
     </spec>
 
-- name: MAX_REQUEST_BLOB_SIDECARS
+- name: MAX_REQUEST_BLOB_SIDECARS#deneb
   sources:
     - file: config/params/config.go
       search: MaxRequestBlobSidecars\s+uint64
@@ -407,7 +442,7 @@
     MAX_REQUEST_BLOB_SIDECARS = 768
     </spec>
 
-- name: MAX_REQUEST_BLOB_SIDECARS_ELECTRA
+- name: MAX_REQUEST_BLOB_SIDECARS_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MaxRequestBlobSidecarsElectra\s+uint64
@@ -417,7 +452,7 @@
     MAX_REQUEST_BLOB_SIDECARS_ELECTRA = 1152
     </spec>
 
-- name: MAX_REQUEST_BLOCKS
+- name: MAX_REQUEST_BLOCKS#phase0
   sources:
     - file: config/params/config.go
       search: MaxRequestBlocks\s+uint64
@@ -427,7 +462,7 @@
     MAX_REQUEST_BLOCKS = 1024
     </spec>
 
-- name: MAX_REQUEST_BLOCKS_DENEB
+- name: MAX_REQUEST_BLOCKS_DENEB#deneb
   sources:
     - file: config/params/config.go
       search: MaxRequestBlocksDeneb\s+uint64
@@ -437,7 +472,7 @@
     MAX_REQUEST_BLOCKS_DENEB = 128
     </spec>
 
-- name: MAX_REQUEST_DATA_COLUMN_SIDECARS
+- name: MAX_REQUEST_DATA_COLUMN_SIDECARS#fulu
   sources:
     - file: config/params/config.go
       search: MaxRequestDataColumnSidecars\s+uint64
@@ -447,7 +482,14 @@
     MAX_REQUEST_DATA_COLUMN_SIDECARS = 16384
     </spec>
 
-- name: MESSAGE_DOMAIN_INVALID_SNAPPY
+- name: MAX_REQUEST_PAYLOADS#gloas
+  sources: []
+  spec: |
+    <spec config_var="MAX_REQUEST_PAYLOADS" fork="gloas" hash="23399ee5">
+    MAX_REQUEST_PAYLOADS = 128
+    </spec>
+
+- name: MESSAGE_DOMAIN_INVALID_SNAPPY#phase0
   sources:
     - file: config/params/config.go
       search: MessageDomainInvalidSnappy\s+\[4\]byte
@@ -457,7 +499,7 @@
     MESSAGE_DOMAIN_INVALID_SNAPPY: DomainType = '0x00000000'
     </spec>
 
-- name: MESSAGE_DOMAIN_VALID_SNAPPY
+- name: MESSAGE_DOMAIN_VALID_SNAPPY#phase0
   sources:
     - file: config/params/config.go
       search: MessageDomainValidSnappy\s+\[4\]byte
@@ -467,7 +509,14 @@
     MESSAGE_DOMAIN_VALID_SNAPPY: DomainType = '0x01000000'
     </spec>
 
-- name: MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS
+- name: MIN_BUILDER_WITHDRAWABILITY_DELAY#gloas
+  sources: []
+  spec: |
+    <spec config_var="MIN_BUILDER_WITHDRAWABILITY_DELAY" fork="gloas" hash="d378428f">
+    MIN_BUILDER_WITHDRAWABILITY_DELAY: uint64 = 4096
+    </spec>
+
+- name: MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS#deneb
   sources:
     - file: config/params/config.go
       search: MinEpochsForBlobsSidecarsRequest\s+primitives.Epoch
@@ -477,7 +526,7 @@
     MIN_EPOCHS_FOR_BLOB_SIDECARS_REQUESTS = 4096
     </spec>
 
-- name: MIN_EPOCHS_FOR_BLOCK_REQUESTS
+- name: MIN_EPOCHS_FOR_BLOCK_REQUESTS#phase0
   sources:
     - file: config/params/config.go
       search: MinEpochsForBlockRequests\s+uint64
@@ -487,7 +536,7 @@
     MIN_EPOCHS_FOR_BLOCK_REQUESTS = 33024
     </spec>
 
-- name: MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS
+- name: MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS#fulu
   sources:
     - file: config/params/config.go
       search: MinEpochsForDataColumnSidecarsRequest\s+primitives.Epoch
@@ -497,7 +546,7 @@
     MIN_EPOCHS_FOR_DATA_COLUMN_SIDECARS_REQUESTS = 4096
     </spec>
 
-- name: MIN_GENESIS_ACTIVE_VALIDATOR_COUNT
+- name: MIN_GENESIS_ACTIVE_VALIDATOR_COUNT#phase0
   sources:
     - file: config/params/config.go
       search: MinGenesisActiveValidatorCount\s+uint64
@@ -507,7 +556,7 @@
     MIN_GENESIS_ACTIVE_VALIDATOR_COUNT: uint64 = 16384
     </spec>
 
-- name: MIN_GENESIS_TIME
+- name: MIN_GENESIS_TIME#phase0
   sources:
     - file: config/params/config.go
       search: MinGenesisTime\s+uint64
@@ -517,7 +566,7 @@
     MIN_GENESIS_TIME: uint64 = 1606824000
     </spec>
 
-- name: MIN_PER_EPOCH_CHURN_LIMIT
+- name: MIN_PER_EPOCH_CHURN_LIMIT#phase0
   sources:
     - file: config/params/config.go
       search: MinPerEpochChurnLimit\s+uint64
@@ -527,7 +576,7 @@
     MIN_PER_EPOCH_CHURN_LIMIT: uint64 = 4
     </spec>
 
-- name: MIN_PER_EPOCH_CHURN_LIMIT_ELECTRA
+- name: MIN_PER_EPOCH_CHURN_LIMIT_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MinPerEpochChurnLimitElectra\s+uint64
@@ -537,7 +586,7 @@
     MIN_PER_EPOCH_CHURN_LIMIT_ELECTRA: Gwei = 128000000000
     </spec>
 
-- name: MIN_VALIDATOR_WITHDRAWABILITY_DELAY
+- name: MIN_VALIDATOR_WITHDRAWABILITY_DELAY#phase0
   sources:
     - file: config/params/config.go
       search: MinValidatorWithdrawabilityDelay\s+primitives.Epoch
@@ -547,7 +596,7 @@
     MIN_VALIDATOR_WITHDRAWABILITY_DELAY: uint64 = 256
     </spec>
 
-- name: NUMBER_OF_CUSTODY_GROUPS
+- name: NUMBER_OF_CUSTODY_GROUPS#fulu
   sources:
     - file: config/params/config.go
       search: NumberOfCustodyGroups\s+uint64
@@ -557,7 +606,14 @@
     NUMBER_OF_CUSTODY_GROUPS = 128
     </spec>
 
-- name: PROPOSER_REORG_CUTOFF_BPS
+- name: PAYLOAD_ATTESTATION_DUE_BPS#gloas
+  sources: []
+  spec: |
+    <spec config_var="PAYLOAD_ATTESTATION_DUE_BPS" fork="gloas" hash="17307d0e">
+    PAYLOAD_ATTESTATION_DUE_BPS: uint64 = 7500
+    </spec>
+
+- name: PROPOSER_REORG_CUTOFF_BPS#phase0
   sources:
     - file: config/params/config.go
       search: ProposerReorgCutoffBPS\s+primitives.BP
@@ -567,7 +623,7 @@
     PROPOSER_REORG_CUTOFF_BPS: uint64 = 1667
     </spec>
 
-- name: PROPOSER_SCORE_BOOST
+- name: PROPOSER_SCORE_BOOST#phase0
   sources:
     - file: config/params/config.go
       search: ProposerScoreBoost\s+uint64
@@ -577,7 +633,7 @@
     PROPOSER_SCORE_BOOST: uint64 = 40
     </spec>
 
-- name: REORG_HEAD_WEIGHT_THRESHOLD
+- name: REORG_HEAD_WEIGHT_THRESHOLD#phase0
   sources:
     - file: config/params/config.go
       search: ReorgHeadWeightThreshold\s+uint64
@@ -587,7 +643,7 @@
     REORG_HEAD_WEIGHT_THRESHOLD: uint64 = 20
     </spec>
 
-- name: REORG_MAX_EPOCHS_SINCE_FINALIZATION
+- name: REORG_MAX_EPOCHS_SINCE_FINALIZATION#phase0
   sources:
     - file: config/params/config.go
       search: ReorgMaxEpochsSinceFinalization\s+primitives.Epoch
@@ -597,7 +653,7 @@
     REORG_MAX_EPOCHS_SINCE_FINALIZATION: Epoch = 2
     </spec>
 
-- name: REORG_PARENT_WEIGHT_THRESHOLD
+- name: REORG_PARENT_WEIGHT_THRESHOLD#phase0
   sources:
     - file: config/params/config.go
       search: ReorgParentWeightThreshold\s+uint64
@@ -607,7 +663,7 @@
     REORG_PARENT_WEIGHT_THRESHOLD: uint64 = 160
     </spec>
 
-- name: SAMPLES_PER_SLOT
+- name: SAMPLES_PER_SLOT#fulu
   sources:
     - file: config/params/config.go
       search: SamplesPerSlot\s+uint64
@@ -617,7 +673,7 @@
     SAMPLES_PER_SLOT = 8
     </spec>
 
-- name: SECONDS_PER_ETH1_BLOCK
+- name: SECONDS_PER_ETH1_BLOCK#phase0
   sources:
     - file: config/params/config.go
       search: SecondsPerETH1Block\s+uint64
@@ -627,7 +683,7 @@
     SECONDS_PER_ETH1_BLOCK: uint64 = 14
     </spec>
 
-- name: SECONDS_PER_SLOT
+- name: SECONDS_PER_SLOT#phase0
   sources:
     - file: config/params/config.go
       search: SecondsPerSlot\s+uint64
@@ -637,7 +693,7 @@
     SECONDS_PER_SLOT: uint64 = 12
     </spec>
 
-- name: SHARD_COMMITTEE_PERIOD
+- name: SHARD_COMMITTEE_PERIOD#phase0
   sources:
     - file: config/params/config.go
       search: ShardCommitteePeriod\s+primitives.Epoch
@@ -647,7 +703,7 @@
     SHARD_COMMITTEE_PERIOD: uint64 = 256
     </spec>
 
-- name: SLOT_DURATION_MS
+- name: SLOT_DURATION_MS#phase0
   sources:
     - file: config/params/config.go
       search: SlotDurationMilliseconds\s+uint64
@@ -657,7 +713,7 @@
     SLOT_DURATION_MS: uint64 = 12000
     </spec>
 
-- name: SUBNETS_PER_NODE
+- name: SUBNETS_PER_NODE#phase0
   sources:
     - file: config/params/config.go
       search: SubnetsPerNode\s+uint64
@@ -667,7 +723,7 @@
     SUBNETS_PER_NODE = 2
     </spec>
 
-- name: SYNC_MESSAGE_DUE_BPS
+- name: SYNC_MESSAGE_DUE_BPS#altair
   sources:
     - file: config/params/config.go
       search: SyncMessageDueBPS\s+primitives.BP
@@ -677,7 +733,14 @@
     SYNC_MESSAGE_DUE_BPS: uint64 = 3333
     </spec>
 
-- name: TERMINAL_BLOCK_HASH
+- name: SYNC_MESSAGE_DUE_BPS_GLOAS#gloas
+  sources: []
+  spec: |
+    <spec config_var="SYNC_MESSAGE_DUE_BPS_GLOAS" fork="gloas" hash="47f14d95">
+    SYNC_MESSAGE_DUE_BPS_GLOAS: uint64 = 2500
+    </spec>
+
+- name: TERMINAL_BLOCK_HASH#bellatrix
   sources:
     - file: config/params/config.go
       search: TerminalBlockHash\s+common.Hash
@@ -687,7 +750,7 @@
     TERMINAL_BLOCK_HASH: Hash32 = '0x0000000000000000000000000000000000000000000000000000000000000000'
     </spec>
 
-- name: TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH
+- name: TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH#bellatrix
   sources:
     - file: config/params/config.go
       search: TerminalBlockHashActivationEpoch\s+primitives.Epoch
@@ -697,7 +760,7 @@
     TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH = 18446744073709551615
     </spec>
 
-- name: TERMINAL_TOTAL_DIFFICULTY
+- name: TERMINAL_TOTAL_DIFFICULTY#bellatrix
   sources:
     - file: config/params/config.go
       search: TerminalTotalDifficulty\s+string
@@ -707,7 +770,7 @@
     TERMINAL_TOTAL_DIFFICULTY = 58750000000000000000000
     </spec>
 
-- name: VALIDATOR_CUSTODY_REQUIREMENT
+- name: VALIDATOR_CUSTODY_REQUIREMENT#fulu
   sources:
     - file: config/params/config.go
       search: ValidatorCustodyRequirement\s+uint64

specrefs/containers.yml

@@ -50,7 +50,7 @@
         committee_bits: Bitvector[MAX_COMMITTEES_PER_SLOT]
     </spec>
 
-- name: AttestationData
+- name: AttestationData#phase0
   sources:
     - file: proto/eth/v1/attestation.proto
       search: message AttestationData {
@@ -88,7 +88,7 @@
         attestation_2: IndexedAttestation
     </spec>
 
-- name: BLSToExecutionChange
+- name: BLSToExecutionChange#capella
   sources:
     - file: proto/prysm/v1alpha1/withdrawals.proto
       search: message BLSToExecutionChange {
@@ -100,7 +100,7 @@
         to_execution_address: ExecutionAddress
     </spec>
 
-- name: BeaconBlock
+- name: BeaconBlock#phase0
   sources:
     - file: proto/eth/v1/beacon_block.proto
       search: message BeaconBlock {
@@ -239,7 +239,34 @@
         execution_requests: ExecutionRequests
     </spec>
 
-- name: BeaconBlockHeader
+- name: BeaconBlockBody#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="BeaconBlockBody" fork="gloas" hash="7e472a77">
+    class BeaconBlockBody(Container):
+        randao_reveal: BLSSignature
+        eth1_data: Eth1Data
+        graffiti: Bytes32
+        proposer_slashings: List[ProposerSlashing, MAX_PROPOSER_SLASHINGS]
+        attester_slashings: List[AttesterSlashing, MAX_ATTESTER_SLASHINGS_ELECTRA]
+        attestations: List[Attestation, MAX_ATTESTATIONS_ELECTRA]
+        deposits: List[Deposit, MAX_DEPOSITS]
+        voluntary_exits: List[SignedVoluntaryExit, MAX_VOLUNTARY_EXITS]
+        sync_aggregate: SyncAggregate
+        # [Modified in Gloas:EIP7732]
+        # Removed `execution_payload`
+        bls_to_execution_changes: List[SignedBLSToExecutionChange, MAX_BLS_TO_EXECUTION_CHANGES]
+        # [Modified in Gloas:EIP7732]
+        # Removed `blob_kzg_commitments`
+        # [Modified in Gloas:EIP7732]
+        # Removed `execution_requests`
+        # [New in Gloas:EIP7732]
+        signed_execution_payload_bid: SignedExecutionPayloadBid
+        # [New in Gloas:EIP7732]
+        payload_attestations: List[PayloadAttestation, MAX_PAYLOAD_ATTESTATIONS]
+    </spec>
+
+- name: BeaconBlockHeader#phase0
   sources:
     - file: proto/eth/v1/beacon_block.proto
       search: message BeaconBlockHeader {
@@ -538,7 +565,69 @@
         proposer_lookahead: Vector[ValidatorIndex, (MIN_SEED_LOOKAHEAD + 1) * SLOTS_PER_EPOCH]
     </spec>
 
-- name: BlobIdentifier
+- name: BeaconState#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="BeaconState" fork="gloas" hash="c33b0db2">
+    class BeaconState(Container):
+        genesis_time: uint64
+        genesis_validators_root: Root
+        slot: Slot
+        fork: Fork
+        latest_block_header: BeaconBlockHeader
+        block_roots: Vector[Root, SLOTS_PER_HISTORICAL_ROOT]
+        state_roots: Vector[Root, SLOTS_PER_HISTORICAL_ROOT]
+        historical_roots: List[Root, HISTORICAL_ROOTS_LIMIT]
+        eth1_data: Eth1Data
+        eth1_data_votes: List[Eth1Data, EPOCHS_PER_ETH1_VOTING_PERIOD * SLOTS_PER_EPOCH]
+        eth1_deposit_index: uint64
+        validators: List[Validator, VALIDATOR_REGISTRY_LIMIT]
+        balances: List[Gwei, VALIDATOR_REGISTRY_LIMIT]
+        randao_mixes: Vector[Bytes32, EPOCHS_PER_HISTORICAL_VECTOR]
+        slashings: Vector[Gwei, EPOCHS_PER_SLASHINGS_VECTOR]
+        previous_epoch_participation: List[ParticipationFlags, VALIDATOR_REGISTRY_LIMIT]
+        current_epoch_participation: List[ParticipationFlags, VALIDATOR_REGISTRY_LIMIT]
+        justification_bits: Bitvector[JUSTIFICATION_BITS_LENGTH]
+        previous_justified_checkpoint: Checkpoint
+        current_justified_checkpoint: Checkpoint
+        finalized_checkpoint: Checkpoint
+        inactivity_scores: List[uint64, VALIDATOR_REGISTRY_LIMIT]
+        current_sync_committee: SyncCommittee
+        next_sync_committee: SyncCommittee
+        # [Modified in Gloas:EIP7732]
+        # Removed `latest_execution_payload_header`
+        # [New in Gloas:EIP7732]
+        latest_execution_payload_bid: ExecutionPayloadBid
+        next_withdrawal_index: WithdrawalIndex
+        next_withdrawal_validator_index: ValidatorIndex
+        historical_summaries: List[HistoricalSummary, HISTORICAL_ROOTS_LIMIT]
+        deposit_requests_start_index: uint64
+        deposit_balance_to_consume: Gwei
+        exit_balance_to_consume: Gwei
+        earliest_exit_epoch: Epoch
+        consolidation_balance_to_consume: Gwei
+        earliest_consolidation_epoch: Epoch
+        pending_deposits: List[PendingDeposit, PENDING_DEPOSITS_LIMIT]
+        pending_partial_withdrawals: List[PendingPartialWithdrawal, PENDING_PARTIAL_WITHDRAWALS_LIMIT]
+        pending_consolidations: List[PendingConsolidation, PENDING_CONSOLIDATIONS_LIMIT]
+        proposer_lookahead: Vector[ValidatorIndex, (MIN_SEED_LOOKAHEAD + 1) * SLOTS_PER_EPOCH]
+        # [New in Gloas:EIP7732]
+        builders: List[Builder, BUILDER_REGISTRY_LIMIT]
+        # [New in Gloas:EIP7732]
+        next_withdrawal_builder_index: BuilderIndex
+        # [New in Gloas:EIP7732]
+        execution_payload_availability: Bitvector[SLOTS_PER_HISTORICAL_ROOT]
+        # [New in Gloas:EIP7732]
+        builder_pending_payments: Vector[BuilderPendingPayment, 2 * SLOTS_PER_EPOCH]
+        # [New in Gloas:EIP7732]
+        builder_pending_withdrawals: List[BuilderPendingWithdrawal, BUILDER_PENDING_WITHDRAWALS_LIMIT]
+        # [New in Gloas:EIP7732]
+        latest_block_hash: Hash32
+        # [New in Gloas:EIP7732]
+        payload_expected_withdrawals: List[Withdrawal, MAX_WITHDRAWALS_PER_PAYLOAD]
+    </spec>
+
+- name: BlobIdentifier#deneb
   sources:
     - file: proto/prysm/v1alpha1/blobs.proto
       search: message BlobIdentifier {
@@ -549,7 +638,7 @@
         index: BlobIndex
     </spec>
 
-- name: BlobSidecar
+- name: BlobSidecar#deneb
   sources:
     - file: proto/prysm/v1alpha1/beacon_block.proto
       search: message BlobSidecar {
@@ -564,7 +653,39 @@
         kzg_commitment_inclusion_proof: Vector[Bytes32, KZG_COMMITMENT_INCLUSION_PROOF_DEPTH]
     </spec>
 
-- name: Checkpoint
+- name: Builder#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="Builder" fork="gloas" hash="ae177179">
+    class Builder(Container):
+        pubkey: BLSPubkey
+        version: uint8
+        execution_address: ExecutionAddress
+        balance: Gwei
+        deposit_epoch: Epoch
+        withdrawable_epoch: Epoch
+    </spec>
+
+- name: BuilderPendingPayment#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="BuilderPendingPayment" fork="gloas" hash="73cf1649">
+    class BuilderPendingPayment(Container):
+        weight: Gwei
+        withdrawal: BuilderPendingWithdrawal
+    </spec>
+
+- name: BuilderPendingWithdrawal#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="BuilderPendingWithdrawal" fork="gloas" hash="0579f0ac">
+    class BuilderPendingWithdrawal(Container):
+        fee_recipient: ExecutionAddress
+        amount: Gwei
+        builder_index: BuilderIndex
+    </spec>
+
+- name: Checkpoint#phase0
   sources:
     - file: proto/eth/v1/attestation.proto
       search: message Checkpoint {
@@ -575,7 +696,7 @@
         root: Root
     </spec>
 
-- name: ConsolidationRequest
+- name: ConsolidationRequest#electra
   sources:
     - file: proto/engine/v1/electra.proto
       search: message ConsolidationRequest {
@@ -587,7 +708,7 @@
         target_pubkey: BLSPubkey
     </spec>
 
-- name: ContributionAndProof
+- name: ContributionAndProof#altair
   sources:
     - file: proto/prysm/v1alpha1/sync_committee.proto
       search: message ContributionAndProof {
@@ -599,7 +720,7 @@
         selection_proof: BLSSignature
     </spec>
 
-- name: DataColumnSidecar
+- name: DataColumnSidecar#fulu
   sources:
     - file: proto/prysm/v1alpha1/data_columns.proto
       search: message DataColumnSidecar {
@@ -614,7 +735,26 @@
         kzg_commitments_inclusion_proof: Vector[Bytes32, KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH]
     </spec>
 
-- name: DataColumnsByRootIdentifier
+- name: DataColumnSidecar#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="DataColumnSidecar" fork="gloas" hash="8028928b">
+    class DataColumnSidecar(Container):
+        index: ColumnIndex
+        column: List[Cell, MAX_BLOB_COMMITMENTS_PER_BLOCK]
+        kzg_commitments: List[KZGCommitment, MAX_BLOB_COMMITMENTS_PER_BLOCK]
+        kzg_proofs: List[KZGProof, MAX_BLOB_COMMITMENTS_PER_BLOCK]
+        # [Modified in Gloas:EIP7732]
+        # Removed `signed_block_header`
+        # [Modified in Gloas:EIP7732]
+        # Removed `kzg_commitments_inclusion_proof`
+        # [New in Gloas:EIP7732]
+        slot: Slot
+        # [New in Gloas:EIP7732]
+        beacon_block_root: Root
+    </spec>
+
+- name: DataColumnsByRootIdentifier#fulu
   sources:
     - file: proto/prysm/v1alpha1/data_columns.proto
       search: message DataColumnsByRootIdentifier {
@@ -625,7 +765,7 @@
         columns: List[ColumnIndex, NUMBER_OF_COLUMNS]
     </spec>
 
-- name: Deposit
+- name: Deposit#phase0
   sources:
     - file: proto/eth/v1/beacon_block.proto
       search: message Deposit {
@@ -636,7 +776,7 @@
         data: DepositData
     </spec>
 
-- name: DepositData
+- name: DepositData#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message Data {
@@ -649,7 +789,7 @@
         signature: BLSSignature
     </spec>
 
-- name: DepositMessage
+- name: DepositMessage#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message DepositMessage {
@@ -661,7 +801,7 @@
         amount: Gwei
     </spec>
 
-- name: DepositRequest
+- name: DepositRequest#electra
   sources:
     - file: proto/engine/v1/electra.proto
       search: message DepositRequest {
@@ -675,7 +815,17 @@
         index: uint64
     </spec>
 
-- name: Eth1Data
+- name: Eth1Block#phase0
+  sources: []
+  spec: |
+    <spec ssz_object="Eth1Block" fork="phase0" hash="0a5c6b45">
+    class Eth1Block(Container):
+        timestamp: uint64
+        deposit_root: Root
+        deposit_count: uint64
+    </spec>
+
+- name: Eth1Data#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message Eth1Data {
@@ -763,6 +913,38 @@
         excess_blob_gas: uint64
     </spec>
 
+- name: ExecutionPayloadBid#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="ExecutionPayloadBid" fork="gloas" hash="aa71ba16">
+    class ExecutionPayloadBid(Container):
+        parent_block_hash: Hash32
+        parent_block_root: Root
+        block_hash: Hash32
+        prev_randao: Bytes32
+        fee_recipient: ExecutionAddress
+        gas_limit: uint64
+        builder_index: BuilderIndex
+        slot: Slot
+        value: Gwei
+        execution_payment: Gwei
+        blob_kzg_commitments_root: Root
+    </spec>
+
+- name: ExecutionPayloadEnvelope#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="ExecutionPayloadEnvelope" fork="gloas" hash="cd522f7f">
+    class ExecutionPayloadEnvelope(Container):
+        payload: ExecutionPayload
+        execution_requests: ExecutionRequests
+        builder_index: BuilderIndex
+        beacon_block_root: Root
+        slot: Slot
+        blob_kzg_commitments: List[KZGCommitment, MAX_BLOB_COMMITMENTS_PER_BLOCK]
+        state_root: Root
+    </spec>
+
 - name: ExecutionPayloadHeader#bellatrix
   sources:
     - file: proto/engine/v1/execution_engine.proto
@@ -839,7 +1021,7 @@
         excess_blob_gas: uint64
     </spec>
 
-- name: ExecutionRequests
+- name: ExecutionRequests#electra
   sources:
     - file: proto/engine/v1/electra.proto
       search: message ExecutionRequests {
@@ -854,7 +1036,7 @@
         consolidations: List[ConsolidationRequest, MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD]
     </spec>
 
-- name: Fork
+- name: Fork#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message Fork {
@@ -866,7 +1048,16 @@
         epoch: Epoch
     </spec>
 
-- name: ForkData
+- name: ForkChoiceNode#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="ForkChoiceNode" fork="gloas" hash="755a4b34">
+    class ForkChoiceNode(Container):
+        root: Root
+        payload_status: PayloadStatus  # One of PAYLOAD_STATUS_* values
+    </spec>
+
+- name: ForkData#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message ForkData {
@@ -877,7 +1068,7 @@
         genesis_validators_root: Root
     </spec>
 
-- name: HistoricalBatch
+- name: HistoricalBatch#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message HistoricalBatch {
@@ -888,7 +1079,7 @@
         state_roots: Vector[Root, SLOTS_PER_HISTORICAL_ROOT]
     </spec>
 
-- name: HistoricalSummary
+- name: HistoricalSummary#capella
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message HistoricalSummary {
@@ -924,7 +1115,17 @@
         signature: BLSSignature
     </spec>
 
-- name: LightClientBootstrap
+- name: IndexedPayloadAttestation#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="IndexedPayloadAttestation" fork="gloas" hash="fa4832c8">
+    class IndexedPayloadAttestation(Container):
+        attesting_indices: List[ValidatorIndex, PTC_SIZE]
+        data: PayloadAttestationData
+        signature: BLSSignature
+    </spec>
+
+- name: LightClientBootstrap#altair
   sources:
     - file: proto/prysm/v1alpha1/light_client.proto
       search: message LightClientBootstrapAltair {
@@ -938,7 +1139,18 @@
         current_sync_committee_branch: CurrentSyncCommitteeBranch
     </spec>
 
-- name: LightClientFinalityUpdate
+- name: LightClientBootstrap#capella
+  sources: []
+  spec: |
+    <spec ssz_object="LightClientBootstrap" fork="capella" hash="85f4f5fe">
+    class LightClientBootstrap(Container):
+        # [Modified in Capella]
+        header: LightClientHeader
+        current_sync_committee: SyncCommittee
+        current_sync_committee_branch: CurrentSyncCommitteeBranch
+    </spec>
+
+- name: LightClientFinalityUpdate#altair
   sources:
     - file: proto/prysm/v1alpha1/light_client.proto
       search: message LightClientFinalityUpdateAltair {
@@ -956,6 +1168,20 @@
         signature_slot: Slot
     </spec>
 
+- name: LightClientFinalityUpdate#capella
+  sources: []
+  spec: |
+    <spec ssz_object="LightClientFinalityUpdate" fork="capella" hash="9d2b55dd">
+    class LightClientFinalityUpdate(Container):
+        # [Modified in Capella]
+        attested_header: LightClientHeader
+        # [Modified in Capella]
+        finalized_header: LightClientHeader
+        finality_branch: FinalityBranch
+        sync_aggregate: SyncAggregate
+        signature_slot: Slot
+    </spec>
+
 - name: LightClientHeader#altair
   sources:
     - file: proto/prysm/v1alpha1/light_client.proto
@@ -980,7 +1206,7 @@
         execution_branch: ExecutionBranch
     </spec>
 
-- name: LightClientOptimisticUpdate
+- name: LightClientOptimisticUpdate#altair
   sources:
     - file: proto/prysm/v1alpha1/light_client.proto
       search: message LightClientOptimisticUpdateAltair {
@@ -995,7 +1221,18 @@
         signature_slot: Slot
     </spec>
 
-- name: LightClientUpdate
+- name: LightClientOptimisticUpdate#capella
+  sources: []
+  spec: |
+    <spec ssz_object="LightClientOptimisticUpdate" fork="capella" hash="bdce7b1d">
+    class LightClientOptimisticUpdate(Container):
+        # [Modified in Capella]
+        attested_header: LightClientHeader
+        sync_aggregate: SyncAggregate
+        signature_slot: Slot
+    </spec>
+
+- name: LightClientUpdate#altair
   sources:
     - file: proto/prysm/v1alpha1/light_client.proto
       search: message LightClientUpdateAltair {
@@ -1016,7 +1253,65 @@
         signature_slot: Slot
     </spec>
 
-- name: PendingAttestation
+- name: LightClientUpdate#capella
+  sources: []
+  spec: |
+    <spec ssz_object="LightClientUpdate" fork="capella" hash="8d215165">
+    class LightClientUpdate(Container):
+        # [Modified in Capella]
+        attested_header: LightClientHeader
+        next_sync_committee: SyncCommittee
+        next_sync_committee_branch: NextSyncCommitteeBranch
+        # [Modified in Capella]
+        finalized_header: LightClientHeader
+        finality_branch: FinalityBranch
+        sync_aggregate: SyncAggregate
+        signature_slot: Slot
+    </spec>
+
+- name: MatrixEntry#fulu
+  sources: []
+  spec: |
+    <spec ssz_object="MatrixEntry" fork="fulu" hash="0da9cc8e">
+    class MatrixEntry(Container):
+        cell: Cell
+        kzg_proof: KZGProof
+        column_index: ColumnIndex
+        row_index: RowIndex
+    </spec>
+
+- name: PayloadAttestation#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="PayloadAttestation" fork="gloas" hash="c769473d">
+    class PayloadAttestation(Container):
+        aggregation_bits: Bitvector[PTC_SIZE]
+        data: PayloadAttestationData
+        signature: BLSSignature
+    </spec>
+
+- name: PayloadAttestationData#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="PayloadAttestationData" fork="gloas" hash="9f1b7f92">
+    class PayloadAttestationData(Container):
+        beacon_block_root: Root
+        slot: Slot
+        payload_present: boolean
+        blob_data_available: boolean
+    </spec>
+
+- name: PayloadAttestationMessage#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="PayloadAttestationMessage" fork="gloas" hash="3707678d">
+    class PayloadAttestationMessage(Container):
+        validator_index: ValidatorIndex
+        data: PayloadAttestationData
+        signature: BLSSignature
+    </spec>
+
+- name: PendingAttestation#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message PendingAttestation {
@@ -1029,7 +1324,7 @@
         proposer_index: ValidatorIndex
     </spec>
 
-- name: PendingConsolidation
+- name: PendingConsolidation#electra
   sources:
     - file: proto/prysm/v1alpha1/eip_7251.proto
       search: message PendingConsolidation {
@@ -1040,7 +1335,7 @@
         target_index: ValidatorIndex
     </spec>
 
-- name: PendingDeposit
+- name: PendingDeposit#electra
   sources:
     - file: proto/prysm/v1alpha1/eip_7251.proto
       search: message PendingDeposit {
@@ -1054,7 +1349,7 @@
         slot: Slot
     </spec>
 
-- name: PendingPartialWithdrawal
+- name: PendingPartialWithdrawal#electra
   sources:
     - file: proto/prysm/v1alpha1/eip_7251.proto
       search: message PendingPartialWithdrawal {
@@ -1066,7 +1361,7 @@
         withdrawable_epoch: Epoch
     </spec>
 
-- name: PowBlock
+- name: PowBlock#bellatrix
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message PowBlock {
@@ -1078,7 +1373,18 @@
         total_difficulty: uint256
     </spec>
 
-- name: ProposerSlashing
+- name: ProposerPreferences#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="ProposerPreferences" fork="gloas" hash="2a38b149">
+    class ProposerPreferences(Container):
+        proposal_slot: Slot
+        validator_index: ValidatorIndex
+        fee_recipient: ExecutionAddress
+        gas_limit: uint64
+    </spec>
+
+- name: ProposerSlashing#phase0
   sources:
     - file: proto/eth/v1/beacon_block.proto
       search: message ProposerSlashing {
@@ -1112,7 +1418,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SignedBLSToExecutionChange
+- name: SignedBLSToExecutionChange#capella
   sources:
     - file: proto/prysm/v1alpha1/withdrawals.proto
       search: message SignedBLSToExecutionChange {
@@ -1123,7 +1429,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SignedBeaconBlock
+- name: SignedBeaconBlock#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_block.proto
       search: message SignedBeaconBlock {
@@ -1134,7 +1440,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SignedBeaconBlockHeader
+- name: SignedBeaconBlockHeader#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message SignedBeaconBlockHeader {
@@ -1145,7 +1451,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SignedContributionAndProof
+- name: SignedContributionAndProof#altair
   sources:
     - file: proto/prysm/v1alpha1/sync_committee.proto
       search: message SignedContributionAndProof {
@@ -1156,7 +1462,34 @@
         signature: BLSSignature
     </spec>
 
-- name: SignedVoluntaryExit
+- name: SignedExecutionPayloadBid#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="SignedExecutionPayloadBid" fork="gloas" hash="6b344341">
+    class SignedExecutionPayloadBid(Container):
+        message: ExecutionPayloadBid
+        signature: BLSSignature
+    </spec>
+
+- name: SignedExecutionPayloadEnvelope#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="SignedExecutionPayloadEnvelope" fork="gloas" hash="ab8f3404">
+    class SignedExecutionPayloadEnvelope(Container):
+        message: ExecutionPayloadEnvelope
+        signature: BLSSignature
+    </spec>
+
+- name: SignedProposerPreferences#gloas
+  sources: []
+  spec: |
+    <spec ssz_object="SignedProposerPreferences" fork="gloas" hash="2142774c">
+    class SignedProposerPreferences(Container):
+        message: ProposerPreferences
+        signature: BLSSignature
+    </spec>
+
+- name: SignedVoluntaryExit#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message SignedVoluntaryExit {
@@ -1167,7 +1500,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SigningData
+- name: SigningData#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message SigningData {
@@ -1178,7 +1511,7 @@
         domain: Domain
     </spec>
 
-- name: SingleAttestation
+- name: SingleAttestation#electra
   sources:
     - file: proto/prysm/v1alpha1/attestation.proto
       search: message SingleAttestation {
@@ -1191,7 +1524,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SyncAggregate
+- name: SyncAggregate#altair
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message SyncAggregate {
@@ -1202,7 +1535,7 @@
         sync_committee_signature: BLSSignature
     </spec>
 
-- name: SyncAggregatorSelectionData
+- name: SyncAggregatorSelectionData#altair
   sources:
     - file: proto/prysm/v1alpha1/beacon_state.proto
       search: message SyncAggregatorSelectionData {
@@ -1213,7 +1546,7 @@
         subcommittee_index: uint64
     </spec>
 
-- name: SyncCommittee
+- name: SyncCommittee#altair
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message SyncCommittee {
@@ -1224,7 +1557,7 @@
         aggregate_pubkey: BLSPubkey
     </spec>
 
-- name: SyncCommitteeContribution
+- name: SyncCommitteeContribution#altair
   sources:
     - file: proto/prysm/v1alpha1/sync_committee.proto
       search: message SyncCommitteeContribution {
@@ -1238,7 +1571,7 @@
         signature: BLSSignature
     </spec>
 
-- name: SyncCommitteeMessage
+- name: SyncCommitteeMessage#altair
   sources:
     - file: proto/prysm/v1alpha1/sync_committee.proto
       search: message SyncCommitteeMessage {
@@ -1251,7 +1584,7 @@
         signature: BLSSignature
     </spec>
 
-- name: Validator
+- name: Validator#phase0
   sources:
     - file: proto/prysm/v1alpha1/beacon_core_types.proto
       search: message Validator {
@@ -1268,7 +1601,7 @@
         withdrawable_epoch: Epoch
     </spec>
 
-- name: VoluntaryExit
+- name: VoluntaryExit#phase0
   sources:
     - file: proto/eth/v1/beacon_block.proto
       search: message VoluntaryExit {
@@ -1279,7 +1612,7 @@
         validator_index: ValidatorIndex
     </spec>
 
-- name: Withdrawal
+- name: Withdrawal#capella
   sources:
     - file: proto/engine/v1/execution_engine.proto
       search: message Withdrawal {
@@ -1292,7 +1625,7 @@
         amount: Gwei
     </spec>
 
-- name: WithdrawalRequest
+- name: WithdrawalRequest#electra
   sources:
     - file: proto/engine/v1/electra.proto
       search: message WithdrawalRequest {

specrefs/dataclasses.yml

@@ -1,4 +1,4 @@
-- name: BlobParameters
+- name: BlobParameters#fulu
   sources: []
   spec: |
     <spec dataclass="BlobParameters" fork="fulu" hash="a4575aa8">
@@ -54,6 +54,20 @@
         processed_sweep_withdrawals_count: uint64
     </spec>
 
+- name: ExpectedWithdrawals#gloas
+  sources: []
+  spec: |
+    <spec dataclass="ExpectedWithdrawals" fork="gloas" hash="b32cc9c9">
+    class ExpectedWithdrawals(object):
+        withdrawals: Sequence[Withdrawal]
+        # [New in Gloas:EIP7732]
+        processed_builder_withdrawals_count: uint64
+        processed_partial_withdrawals_count: uint64
+        # [New in Gloas:EIP7732]
+        processed_builders_sweep_count: uint64
+        processed_sweep_withdrawals_count: uint64
+    </spec>
+
 - name: GetPayloadResponse#bellatrix
   sources:
     - file: consensus-types/blocks/get_payload.go
@@ -126,7 +140,7 @@
         execution_requests: Sequence[bytes]
     </spec>
 
-- name: LatestMessage
+- name: LatestMessage#phase0
   sources: []
   spec: |
     <spec dataclass="LatestMessage" fork="phase0" hash="44e832d0">
@@ -136,7 +150,18 @@
         root: Root
     </spec>
 
-- name: LightClientStore
+- name: LatestMessage#gloas
+  sources: []
+  spec: |
+    <spec dataclass="LatestMessage" fork="gloas" hash="a0030894">
+    @dataclass(eq=True, frozen=True)
+    class LatestMessage(object):
+        slot: Slot
+        root: Root
+        payload_present: boolean
+    </spec>
+
+- name: LightClientStore#altair
   sources: []
   spec: |
     <spec dataclass="LightClientStore" fork="altair" hash="24725cec">
@@ -155,6 +180,23 @@
         current_max_active_participants: uint64
     </spec>
 
+- name: LightClientStore#capella
+  sources: []
+  spec: |
+    <spec dataclass="LightClientStore" fork="capella" hash="04b41062">
+    class LightClientStore(object):
+        # [Modified in Capella]
+        finalized_header: LightClientHeader
+        current_sync_committee: SyncCommittee
+        next_sync_committee: SyncCommittee
+        # [Modified in Capella]
+        best_valid_update: Optional[LightClientUpdate]
+        # [Modified in Capella]
+        optimistic_header: LightClientHeader
+        previous_max_active_participants: uint64
+        current_max_active_participants: uint64
+    </spec>
+
 - name: NewPayloadRequest#bellatrix
   sources:
     - file: beacon-chain/execution/engine_client.go
@@ -191,7 +233,7 @@
         execution_requests: ExecutionRequests
     </spec>
 
-- name: OptimisticStore
+- name: OptimisticStore#bellatrix
   sources: []
   spec: |
     <spec dataclass="OptimisticStore" fork="bellatrix" hash="a2b2182c">
@@ -246,7 +288,7 @@
         parent_beacon_block_root: Root
     </spec>
 
-- name: Store
+- name: Store#phase0
   sources: []
   spec: |
     <spec dataclass="Store" fork="phase0" hash="abe525d6">
@@ -266,3 +308,30 @@
         latest_messages: Dict[ValidatorIndex, LatestMessage] = field(default_factory=dict)
         unrealized_justifications: Dict[Root, Checkpoint] = field(default_factory=dict)
     </spec>
+
+- name: Store#gloas
+  sources: []
+  spec: |
+    <spec dataclass="Store" fork="gloas" hash="4dbfec46">
+    class Store(object):
+        time: uint64
+        genesis_time: uint64
+        justified_checkpoint: Checkpoint
+        finalized_checkpoint: Checkpoint
+        unrealized_justified_checkpoint: Checkpoint
+        unrealized_finalized_checkpoint: Checkpoint
+        proposer_boost_root: Root
+        equivocating_indices: Set[ValidatorIndex]
+        blocks: Dict[Root, BeaconBlock] = field(default_factory=dict)
+        block_states: Dict[Root, BeaconState] = field(default_factory=dict)
+        block_timeliness: Dict[Root, Vector[boolean, NUM_BLOCK_TIMELINESS_DEADLINES]] = field(
+            default_factory=dict
+        )
+        checkpoint_states: Dict[Checkpoint, BeaconState] = field(default_factory=dict)
+        latest_messages: Dict[ValidatorIndex, LatestMessage] = field(default_factory=dict)
+        unrealized_justifications: Dict[Root, Checkpoint] = field(default_factory=dict)
+        # [New in Gloas:EIP7732]
+        execution_payload_states: Dict[Root, BeaconState] = field(default_factory=dict)
+        # [New in Gloas:EIP7732]
+        ptc_vote: Dict[Root, Vector[boolean, PTC_SIZE]] = field(default_factory=dict)
+    </spec>

specrefs/presets.yml

@@ -1,4 +1,4 @@
-- name: BASE_REWARD_FACTOR
+- name: BASE_REWARD_FACTOR#phase0
   sources:
     - file: config/params/config.go
       search: BaseRewardFactor\s+.*yaml:"BASE_REWARD_FACTOR"
@@ -8,7 +8,21 @@
     BASE_REWARD_FACTOR: uint64 = 64
     </spec>
 
-- name: BYTES_PER_LOGS_BLOOM
+- name: BUILDER_PENDING_WITHDRAWALS_LIMIT#gloas
+  sources: []
+  spec: |
+    <spec preset_var="BUILDER_PENDING_WITHDRAWALS_LIMIT" fork="gloas" hash="40b31377">
+    BUILDER_PENDING_WITHDRAWALS_LIMIT: uint64 = 1048576
+    </spec>
+
+- name: BUILDER_REGISTRY_LIMIT#gloas
+  sources: []
+  spec: |
+    <spec preset_var="BUILDER_REGISTRY_LIMIT" fork="gloas" hash="e951ff73">
+    BUILDER_REGISTRY_LIMIT: uint64 = 1099511627776
+    </spec>
+
+- name: BYTES_PER_LOGS_BLOOM#bellatrix
   sources:
     - file: config/params/config.go
       search: BytesPerLogsBloom\s+.*yaml:"BYTES_PER_LOGS_BLOOM"
@@ -18,7 +32,7 @@
     BYTES_PER_LOGS_BLOOM: uint64 = 256
     </spec>
 
-- name: CELLS_PER_EXT_BLOB
+- name: CELLS_PER_EXT_BLOB#fulu
   sources:
     - file: beacon-chain/rpc/eth/config/handlers.go
       search: data\["CELLS_PER_EXT_BLOB"\]
@@ -28,7 +42,7 @@
     CELLS_PER_EXT_BLOB = 128
     </spec>
 
-- name: EFFECTIVE_BALANCE_INCREMENT
+- name: EFFECTIVE_BALANCE_INCREMENT#phase0
   sources:
     - file: config/params/config.go
       search: EffectiveBalanceIncrement\s+.*yaml:"EFFECTIVE_BALANCE_INCREMENT"
@@ -38,7 +52,7 @@
     EFFECTIVE_BALANCE_INCREMENT: Gwei = 1000000000
     </spec>
 
-- name: EPOCHS_PER_ETH1_VOTING_PERIOD
+- name: EPOCHS_PER_ETH1_VOTING_PERIOD#phase0
   sources:
     - file: config/params/config.go
       search: EpochsPerEth1VotingPeriod\s+.*yaml:"EPOCHS_PER_ETH1_VOTING_PERIOD"
@@ -48,7 +62,7 @@
     EPOCHS_PER_ETH1_VOTING_PERIOD: uint64 = 64
     </spec>
 
-- name: EPOCHS_PER_HISTORICAL_VECTOR
+- name: EPOCHS_PER_HISTORICAL_VECTOR#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: RandaoMixesLength\s*=
@@ -58,7 +72,7 @@
     EPOCHS_PER_HISTORICAL_VECTOR: uint64 = 65536
     </spec>
 
-- name: EPOCHS_PER_SLASHINGS_VECTOR
+- name: EPOCHS_PER_SLASHINGS_VECTOR#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: SlashingsLength\s*=
@@ -68,7 +82,7 @@
     EPOCHS_PER_SLASHINGS_VECTOR: uint64 = 8192
     </spec>
 
-- name: EPOCHS_PER_SYNC_COMMITTEE_PERIOD
+- name: EPOCHS_PER_SYNC_COMMITTEE_PERIOD#altair
   sources:
     - file: config/params/config.go
       search: EpochsPerSyncCommitteePeriod\s+.*yaml:"EPOCHS_PER_SYNC_COMMITTEE_PERIOD"
@@ -78,7 +92,7 @@
     EPOCHS_PER_SYNC_COMMITTEE_PERIOD: uint64 = 256
     </spec>
 
-- name: FIELD_ELEMENTS_PER_BLOB
+- name: FIELD_ELEMENTS_PER_BLOB#deneb
   sources:
     - file: config/params/config.go
       search: FieldElementsPerBlob\s+.*yaml:"FIELD_ELEMENTS_PER_BLOB"
@@ -88,7 +102,7 @@
     FIELD_ELEMENTS_PER_BLOB: uint64 = 4096
     </spec>
 
-- name: FIELD_ELEMENTS_PER_CELL
+- name: FIELD_ELEMENTS_PER_CELL#fulu
   sources:
     - file: config/fieldparams/mainnet.go
       search: CellsPerBlob\s*=
@@ -98,7 +112,7 @@
     FIELD_ELEMENTS_PER_CELL: uint64 = 64
     </spec>
 
-- name: FIELD_ELEMENTS_PER_EXT_BLOB
+- name: FIELD_ELEMENTS_PER_EXT_BLOB#fulu
   sources:
     - file: proto/ssz_proto_library.bzl
       search: mainnet\s*=\s*\{[^}]*"field_elements_per_ext_blob\.size".*[^}]*\}
@@ -108,7 +122,7 @@
     FIELD_ELEMENTS_PER_EXT_BLOB = 8192
     </spec>
 
-- name: HISTORICAL_ROOTS_LIMIT
+- name: HISTORICAL_ROOTS_LIMIT#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: HistoricalRootsLength\s*=
@@ -118,7 +132,7 @@
     HISTORICAL_ROOTS_LIMIT: uint64 = 16777216
     </spec>
 
-- name: HYSTERESIS_DOWNWARD_MULTIPLIER
+- name: HYSTERESIS_DOWNWARD_MULTIPLIER#phase0
   sources:
     - file: config/params/config.go
       search: HysteresisDownwardMultiplier\s+.*yaml:"HYSTERESIS_DOWNWARD_MULTIPLIER"
@@ -128,7 +142,7 @@
     HYSTERESIS_DOWNWARD_MULTIPLIER: uint64 = 1
     </spec>
 
-- name: HYSTERESIS_QUOTIENT
+- name: HYSTERESIS_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: HysteresisQuotient\s+.*yaml:"HYSTERESIS_QUOTIENT"
@@ -138,7 +152,7 @@
     HYSTERESIS_QUOTIENT: uint64 = 4
     </spec>
 
-- name: HYSTERESIS_UPWARD_MULTIPLIER
+- name: HYSTERESIS_UPWARD_MULTIPLIER#phase0
   sources:
     - file: config/params/config.go
       search: HysteresisUpwardMultiplier\s+.*yaml:"HYSTERESIS_UPWARD_MULTIPLIER"
@@ -148,7 +162,7 @@
     HYSTERESIS_UPWARD_MULTIPLIER: uint64 = 5
     </spec>
 
-- name: INACTIVITY_PENALTY_QUOTIENT
+- name: INACTIVITY_PENALTY_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: InactivityPenaltyQuotient\s+.*yaml:"INACTIVITY_PENALTY_QUOTIENT"
@@ -158,7 +172,7 @@
     INACTIVITY_PENALTY_QUOTIENT: uint64 = 67108864
     </spec>
 
-- name: INACTIVITY_PENALTY_QUOTIENT_ALTAIR
+- name: INACTIVITY_PENALTY_QUOTIENT_ALTAIR#altair
   sources:
     - file: config/params/config.go
       search: InactivityPenaltyQuotientAltair\s+.*yaml:"INACTIVITY_PENALTY_QUOTIENT_ALTAIR"
@@ -168,7 +182,7 @@
     INACTIVITY_PENALTY_QUOTIENT_ALTAIR: uint64 = 50331648
     </spec>
 
-- name: INACTIVITY_PENALTY_QUOTIENT_BELLATRIX
+- name: INACTIVITY_PENALTY_QUOTIENT_BELLATRIX#bellatrix
   sources:
     - file: config/params/config.go
       search: InactivityPenaltyQuotientBellatrix\s+.*yaml:"INACTIVITY_PENALTY_QUOTIENT_BELLATRIX"
@@ -178,7 +192,7 @@
     INACTIVITY_PENALTY_QUOTIENT_BELLATRIX: uint64 = 16777216
     </spec>
 
-- name: KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH
+- name: KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH#fulu
   sources:
     - file: proto/ssz_proto_library.bzl
       search: mainnet\s*=\s*\{[^}]*"kzg_commitments_inclusion_proof_depth\.size":.*[^}]*\}
@@ -188,7 +202,7 @@
     KZG_COMMITMENTS_INCLUSION_PROOF_DEPTH: uint64 = 4
     </spec>
 
-- name: KZG_COMMITMENT_INCLUSION_PROOF_DEPTH
+- name: KZG_COMMITMENT_INCLUSION_PROOF_DEPTH#deneb
   sources:
     - file: config/fieldparams/mainnet.go
       search: KzgCommitmentInclusionProofDepth\s*=
@@ -198,7 +212,7 @@
     KZG_COMMITMENT_INCLUSION_PROOF_DEPTH: uint64 = 17
     </spec>
 
-- name: MAX_ATTESTATIONS
+- name: MAX_ATTESTATIONS#phase0
   sources:
     - file: config/params/config.go
       search: MaxAttestations\s+.*yaml:"MAX_ATTESTATIONS"
@@ -208,7 +222,7 @@
     MAX_ATTESTATIONS = 128
     </spec>
 
-- name: MAX_ATTESTATIONS_ELECTRA
+- name: MAX_ATTESTATIONS_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MaxAttestationsElectra\s+.*yaml:"MAX_ATTESTATIONS_ELECTRA"
@@ -218,7 +232,7 @@
     MAX_ATTESTATIONS_ELECTRA = 8
     </spec>
 
-- name: MAX_ATTESTER_SLASHINGS
+- name: MAX_ATTESTER_SLASHINGS#phase0
   sources:
     - file: config/params/config.go
       search: MaxAttesterSlashings\s+.*yaml:"MAX_ATTESTER_SLASHINGS"
@@ -228,7 +242,7 @@
     MAX_ATTESTER_SLASHINGS = 2
     </spec>
 
-- name: MAX_ATTESTER_SLASHINGS_ELECTRA
+- name: MAX_ATTESTER_SLASHINGS_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MaxAttesterSlashingsElectra\s+.*yaml:"MAX_ATTESTER_SLASHINGS_ELECTRA"
@@ -238,7 +252,7 @@
     MAX_ATTESTER_SLASHINGS_ELECTRA = 1
     </spec>
 
-- name: MAX_BLOB_COMMITMENTS_PER_BLOCK
+- name: MAX_BLOB_COMMITMENTS_PER_BLOCK#deneb
   sources:
     - file: config/fieldparams/mainnet.go
       search: MaxBlobCommitmentsPerBlock\s*=
@@ -248,7 +262,7 @@
     MAX_BLOB_COMMITMENTS_PER_BLOCK: uint64 = 4096
     </spec>
 
-- name: MAX_BLS_TO_EXECUTION_CHANGES
+- name: MAX_BLS_TO_EXECUTION_CHANGES#capella
   sources:
     - file: config/params/config.go
       search: MaxBlsToExecutionChanges\s+.*yaml:"MAX_BLS_TO_EXECUTION_CHANGES"
@@ -258,7 +272,14 @@
     MAX_BLS_TO_EXECUTION_CHANGES = 16
     </spec>
 
-- name: MAX_BYTES_PER_TRANSACTION
+- name: MAX_BUILDERS_PER_WITHDRAWALS_SWEEP#gloas
+  sources: []
+  spec: |
+    <spec preset_var="MAX_BUILDERS_PER_WITHDRAWALS_SWEEP" fork="gloas" hash="1556b314">
+    MAX_BUILDERS_PER_WITHDRAWALS_SWEEP = 16384
+    </spec>
+
+- name: MAX_BYTES_PER_TRANSACTION#bellatrix
   sources:
     - file: config/params/config.go
       search: MaxBytesPerTransaction\s+.*yaml:"MAX_BYTES_PER_TRANSACTION"
@@ -288,7 +309,7 @@
     MAX_COMMITTEES_PER_SLOT: uint64 = 64
     </spec>
 
-- name: MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD
+- name: MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD#electra
   sources:
     - file: config/params/config.go
       search: MaxConsolidationsRequestsPerPayload\s+.*yaml:"MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD"
@@ -298,7 +319,7 @@
     MAX_CONSOLIDATION_REQUESTS_PER_PAYLOAD: uint64 = 2
     </spec>
 
-- name: MAX_DEPOSITS
+- name: MAX_DEPOSITS#phase0
   sources:
     - file: config/params/config.go
       search: MaxDeposits\s+.*yaml:"MAX_DEPOSITS"
@@ -308,7 +329,7 @@
     MAX_DEPOSITS = 16
     </spec>
 
-- name: MAX_DEPOSIT_REQUESTS_PER_PAYLOAD
+- name: MAX_DEPOSIT_REQUESTS_PER_PAYLOAD#electra
   sources:
     - file: config/params/config.go
       search: MaxDepositRequestsPerPayload\s+.*yaml:"MAX_DEPOSIT_REQUESTS_PER_PAYLOAD"
@@ -318,7 +339,7 @@
     MAX_DEPOSIT_REQUESTS_PER_PAYLOAD: uint64 = 8192
     </spec>
 
-- name: MAX_EFFECTIVE_BALANCE
+- name: MAX_EFFECTIVE_BALANCE#phase0
   sources:
     - file: config/params/config.go
       search: MaxEffectiveBalance\s+.*yaml:"MAX_EFFECTIVE_BALANCE"
@@ -328,7 +349,7 @@
     MAX_EFFECTIVE_BALANCE: Gwei = 32000000000
     </spec>
 
-- name: MAX_EFFECTIVE_BALANCE_ELECTRA
+- name: MAX_EFFECTIVE_BALANCE_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MaxEffectiveBalanceElectra\s+.*yaml:"MAX_EFFECTIVE_BALANCE_ELECTRA"
@@ -338,7 +359,7 @@
     MAX_EFFECTIVE_BALANCE_ELECTRA: Gwei = 2048000000000
     </spec>
 
-- name: MAX_EXTRA_DATA_BYTES
+- name: MAX_EXTRA_DATA_BYTES#bellatrix
   sources:
     - file: config/params/config.go
       search: MaxExtraDataBytes\s+.*yaml:"MAX_EXTRA_DATA_BYTES"
@@ -348,7 +369,14 @@
     MAX_EXTRA_DATA_BYTES = 32
     </spec>
 
-- name: MAX_PENDING_DEPOSITS_PER_EPOCH
+- name: MAX_PAYLOAD_ATTESTATIONS#gloas
+  sources: []
+  spec: |
+    <spec preset_var="MAX_PAYLOAD_ATTESTATIONS" fork="gloas" hash="fc24e7ea">
+    MAX_PAYLOAD_ATTESTATIONS = 4
+    </spec>
+
+- name: MAX_PENDING_DEPOSITS_PER_EPOCH#electra
   sources:
     - file: config/params/config.go
       search: MaxPendingDepositsPerEpoch\s+.*yaml:"MAX_PENDING_DEPOSITS_PER_EPOCH"
@@ -358,7 +386,7 @@
     MAX_PENDING_DEPOSITS_PER_EPOCH: uint64 = 16
     </spec>
 
-- name: MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP
+- name: MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP#electra
   sources:
     - file: config/params/config.go
       search: MaxPendingPartialsPerWithdrawalsSweep\s+.*yaml:"MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP"
@@ -368,7 +396,7 @@
     MAX_PENDING_PARTIALS_PER_WITHDRAWALS_SWEEP: uint64 = 8
     </spec>
 
-- name: MAX_PROPOSER_SLASHINGS
+- name: MAX_PROPOSER_SLASHINGS#phase0
   sources:
     - file: config/params/config.go
       search: MaxProposerSlashings\s+.*yaml:"MAX_PROPOSER_SLASHINGS"
@@ -378,7 +406,7 @@
     MAX_PROPOSER_SLASHINGS = 16
     </spec>
 
-- name: MAX_SEED_LOOKAHEAD
+- name: MAX_SEED_LOOKAHEAD#phase0
   sources:
     - file: config/params/config.go
       search: MaxSeedLookahead\s+.*yaml:"MAX_SEED_LOOKAHEAD"
@@ -388,7 +416,7 @@
     MAX_SEED_LOOKAHEAD: uint64 = 4
     </spec>
 
-- name: MAX_TRANSACTIONS_PER_PAYLOAD
+- name: MAX_TRANSACTIONS_PER_PAYLOAD#bellatrix
   sources:
     - file: config/params/config.go
       search: MaxTransactionsPerPayload\s+.*yaml:"MAX_TRANSACTIONS_PER_PAYLOAD"
@@ -418,7 +446,7 @@
     MAX_VALIDATORS_PER_COMMITTEE: uint64 = 2048
     </spec>
 
-- name: MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP
+- name: MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP#capella
   sources:
     - file: config/params/config.go
       search: MaxValidatorsPerWithdrawalsSweep\s+.*yaml:"MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP"
@@ -428,7 +456,7 @@
     MAX_VALIDATORS_PER_WITHDRAWALS_SWEEP = 16384
     </spec>
 
-- name: MAX_VOLUNTARY_EXITS
+- name: MAX_VOLUNTARY_EXITS#phase0
   sources:
     - file: config/params/config.go
       search: MaxVoluntaryExits\s+.*yaml:"MAX_VOLUNTARY_EXITS"
@@ -438,7 +466,7 @@
     MAX_VOLUNTARY_EXITS = 16
     </spec>
 
-- name: MAX_WITHDRAWALS_PER_PAYLOAD
+- name: MAX_WITHDRAWALS_PER_PAYLOAD#capella
   sources:
     - file: config/fieldparams/mainnet.go
       search: MaxWithdrawalsPerPayload\s*=
@@ -448,7 +476,7 @@
     MAX_WITHDRAWALS_PER_PAYLOAD: uint64 = 16
     </spec>
 
-- name: MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD
+- name: MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD#electra
   sources:
     - file: config/params/config.go
       search: MaxWithdrawalRequestsPerPayload\s+.*yaml:"MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD"
@@ -458,7 +486,7 @@
     MAX_WITHDRAWAL_REQUESTS_PER_PAYLOAD: uint64 = 16
     </spec>
 
-- name: MIN_ACTIVATION_BALANCE
+- name: MIN_ACTIVATION_BALANCE#electra
   sources:
     - file: config/params/config.go
       search: MinActivationBalance\s+.*yaml:"MIN_ACTIVATION_BALANCE"
@@ -468,7 +496,7 @@
     MIN_ACTIVATION_BALANCE: Gwei = 32000000000
     </spec>
 
-- name: MIN_ATTESTATION_INCLUSION_DELAY
+- name: MIN_ATTESTATION_INCLUSION_DELAY#phase0
   sources:
     - file: config/params/config.go
       search: MinAttestationInclusionDelay\s+.*yaml:"MIN_ATTESTATION_INCLUSION_DELAY"
@@ -478,7 +506,7 @@
     MIN_ATTESTATION_INCLUSION_DELAY: uint64 = 1
     </spec>
 
-- name: MIN_DEPOSIT_AMOUNT
+- name: MIN_DEPOSIT_AMOUNT#phase0
   sources:
     - file: config/params/config.go
       search: MinDepositAmount\s+.*yaml:"MIN_DEPOSIT_AMOUNT"
@@ -488,7 +516,7 @@
     MIN_DEPOSIT_AMOUNT: Gwei = 1000000000
     </spec>
 
-- name: MIN_EPOCHS_TO_INACTIVITY_PENALTY
+- name: MIN_EPOCHS_TO_INACTIVITY_PENALTY#phase0
   sources:
     - file: config/params/config.go
       search: MinEpochsToInactivityPenalty\s+.*yaml:"MIN_EPOCHS_TO_INACTIVITY_PENALTY"
@@ -498,7 +526,7 @@
     MIN_EPOCHS_TO_INACTIVITY_PENALTY: uint64 = 4
     </spec>
 
-- name: MIN_SEED_LOOKAHEAD
+- name: MIN_SEED_LOOKAHEAD#phase0
   sources:
     - file: config/params/config.go
       search: MinSeedLookahead\s+.*yaml:"MIN_SEED_LOOKAHEAD"
@@ -508,7 +536,7 @@
     MIN_SEED_LOOKAHEAD: uint64 = 1
     </spec>
 
-- name: MIN_SLASHING_PENALTY_QUOTIENT
+- name: MIN_SLASHING_PENALTY_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: MinSlashingPenaltyQuotient\s+.*yaml:"MIN_SLASHING_PENALTY_QUOTIENT"
@@ -518,7 +546,7 @@
     MIN_SLASHING_PENALTY_QUOTIENT: uint64 = 128
     </spec>
 
-- name: MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR
+- name: MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR#altair
   sources:
     - file: config/params/config.go
       search: MinSlashingPenaltyQuotientAltair\s+.*yaml:"MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR"
@@ -528,7 +556,7 @@
     MIN_SLASHING_PENALTY_QUOTIENT_ALTAIR: uint64 = 64
     </spec>
 
-- name: MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX
+- name: MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX#bellatrix
   sources:
     - file: config/params/config.go
       search: MinSlashingPenaltyQuotientBellatrix\s+.*yaml:"MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX"
@@ -538,7 +566,7 @@
     MIN_SLASHING_PENALTY_QUOTIENT_BELLATRIX: uint64 = 32
     </spec>
 
-- name: MIN_SLASHING_PENALTY_QUOTIENT_ELECTRA
+- name: MIN_SLASHING_PENALTY_QUOTIENT_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: MinSlashingPenaltyQuotientElectra\s+.*yaml:"MIN_SLASHING_PENALTY_QUOTIENT_ELECTRA"
@@ -548,7 +576,7 @@
     MIN_SLASHING_PENALTY_QUOTIENT_ELECTRA: uint64 = 4096
     </spec>
 
-- name: MIN_SYNC_COMMITTEE_PARTICIPANTS
+- name: MIN_SYNC_COMMITTEE_PARTICIPANTS#altair
   sources:
     - file: config/params/config.go
       search: MinSyncCommitteeParticipants\s+.*yaml:"MIN_SYNC_COMMITTEE_PARTICIPANTS"
@@ -558,7 +586,7 @@
     MIN_SYNC_COMMITTEE_PARTICIPANTS = 1
     </spec>
 
-- name: NUMBER_OF_COLUMNS
+- name: NUMBER_OF_COLUMNS#fulu
   sources:
     - file: config/fieldparams/mainnet.go
       search: NumberOfColumns\s*=
@@ -568,7 +596,7 @@
     NUMBER_OF_COLUMNS: uint64 = 128
     </spec>
 
-- name: PENDING_CONSOLIDATIONS_LIMIT
+- name: PENDING_CONSOLIDATIONS_LIMIT#electra
   sources:
     - file: config/fieldparams/mainnet.go
       search: PendingConsolidationsLimit\s*=
@@ -578,7 +606,7 @@
     PENDING_CONSOLIDATIONS_LIMIT: uint64 = 262144
     </spec>
 
-- name: PENDING_DEPOSITS_LIMIT
+- name: PENDING_DEPOSITS_LIMIT#electra
   sources:
     - file: config/fieldparams/mainnet.go
       search: PendingDepositsLimit\s*=
@@ -588,7 +616,7 @@
     PENDING_DEPOSITS_LIMIT: uint64 = 134217728
     </spec>
 
-- name: PENDING_PARTIAL_WITHDRAWALS_LIMIT
+- name: PENDING_PARTIAL_WITHDRAWALS_LIMIT#electra
   sources:
     - file: config/fieldparams/mainnet.go
       search: PendingPartialWithdrawalsLimit\s*=
@@ -598,7 +626,7 @@
     PENDING_PARTIAL_WITHDRAWALS_LIMIT: uint64 = 134217728
     </spec>
 
-- name: PROPORTIONAL_SLASHING_MULTIPLIER
+- name: PROPORTIONAL_SLASHING_MULTIPLIER#phase0
   sources:
     - file: config/params/config.go
       search: ProportionalSlashingMultiplier\s+.*yaml:"PROPORTIONAL_SLASHING_MULTIPLIER"
@@ -608,7 +636,7 @@
     PROPORTIONAL_SLASHING_MULTIPLIER: uint64 = 1
     </spec>
 
-- name: PROPORTIONAL_SLASHING_MULTIPLIER_ALTAIR
+- name: PROPORTIONAL_SLASHING_MULTIPLIER_ALTAIR#altair
   sources:
     - file: config/params/config.go
       search: ProportionalSlashingMultiplierAltair\s+.*yaml:"PROPORTIONAL_SLASHING_MULTIPLIER_ALTAIR"
@@ -618,7 +646,7 @@
     PROPORTIONAL_SLASHING_MULTIPLIER_ALTAIR: uint64 = 2
     </spec>
 
-- name: PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX
+- name: PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX#bellatrix
   sources:
     - file: config/params/config.go
       search: ProportionalSlashingMultiplierBellatrix\s+.*yaml:"PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX"
@@ -628,7 +656,7 @@
     PROPORTIONAL_SLASHING_MULTIPLIER_BELLATRIX: uint64 = 3
     </spec>
 
-- name: PROPOSER_REWARD_QUOTIENT
+- name: PROPOSER_REWARD_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: ProposerRewardQuotient\s+.*yaml:"PROPOSER_REWARD_QUOTIENT"
@@ -638,7 +666,14 @@
     PROPOSER_REWARD_QUOTIENT: uint64 = 8
     </spec>
 
-- name: SHUFFLE_ROUND_COUNT
+- name: PTC_SIZE#gloas
+  sources: []
+  spec: |
+    <spec preset_var="PTC_SIZE" fork="gloas" hash="d61c5930">
+    PTC_SIZE: uint64 = 512
+    </spec>
+
+- name: SHUFFLE_ROUND_COUNT#phase0
   sources:
     - file: config/params/config.go
       search: ShuffleRoundCount\s+.*yaml:"SHUFFLE_ROUND_COUNT"
@@ -648,7 +683,7 @@
     SHUFFLE_ROUND_COUNT: uint64 = 90
     </spec>
 
-- name: SLOTS_PER_EPOCH
+- name: SLOTS_PER_EPOCH#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: SlotsPerEpoch\s*=
@@ -658,7 +693,7 @@
     SLOTS_PER_EPOCH: uint64 = 32
     </spec>
 
-- name: SLOTS_PER_HISTORICAL_ROOT
+- name: SLOTS_PER_HISTORICAL_ROOT#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: BlockRootsLength\s*=
@@ -668,7 +703,7 @@
     SLOTS_PER_HISTORICAL_ROOT: uint64 = 8192
     </spec>
 
-- name: SYNC_COMMITTEE_SIZE
+- name: SYNC_COMMITTEE_SIZE#altair
   sources:
     - file: config/fieldparams/mainnet.go
       search: SyncCommitteeLength\s*=
@@ -678,7 +713,7 @@
     SYNC_COMMITTEE_SIZE: uint64 = 512
     </spec>
 
-- name: TARGET_COMMITTEE_SIZE
+- name: TARGET_COMMITTEE_SIZE#phase0
   sources:
     - file: config/params/config.go
       search: TargetCommitteeSize\s+.*yaml:"TARGET_COMMITTEE_SIZE"
@@ -688,7 +723,7 @@
     TARGET_COMMITTEE_SIZE: uint64 = 128
     </spec>
 
-- name: UPDATE_TIMEOUT
+- name: UPDATE_TIMEOUT#altair
   sources:
     - file: beacon-chain/rpc/eth/config/handlers.go
       search: data\["UPDATE_TIMEOUT"\]
@@ -698,7 +733,7 @@
     UPDATE_TIMEOUT = 8192
     </spec>
 
-- name: VALIDATOR_REGISTRY_LIMIT
+- name: VALIDATOR_REGISTRY_LIMIT#phase0
   sources:
     - file: config/fieldparams/mainnet.go
       search: ValidatorRegistryLimit\s*=
@@ -708,7 +743,7 @@
     VALIDATOR_REGISTRY_LIMIT: uint64 = 1099511627776
     </spec>
 
-- name: WHISTLEBLOWER_REWARD_QUOTIENT
+- name: WHISTLEBLOWER_REWARD_QUOTIENT#phase0
   sources:
     - file: config/params/config.go
       search: WhistleBlowerRewardQuotient\s+.*yaml:"WHISTLEBLOWER_REWARD_QUOTIENT"
@@ -718,7 +753,7 @@
     WHISTLEBLOWER_REWARD_QUOTIENT: uint64 = 512
     </spec>
 
-- name: WHISTLEBLOWER_REWARD_QUOTIENT_ELECTRA
+- name: WHISTLEBLOWER_REWARD_QUOTIENT_ELECTRA#electra
   sources:
     - file: config/params/config.go
       search: WhistleBlowerRewardQuotientElectra\s+.*yaml:"WHISTLEBLOWER_REWARD_QUOTIENT_ELECTRA"

testing/endtoend/endtoend_test.go

@@ -225,9 +225,9 @@ func (r *testRunner) testDepositsAndTx(ctx context.Context, g *errgroup.Group,
 		if err := helpers.ComponentsStarted(ctx, []e2etypes.ComponentRunner{r.depositor}); err != nil {
 			return errors.Wrap(err, "testDepositsAndTx unable to run, depositor did not Start")
 		}
-        go func() {
-            if r.config.TestDeposits {
-                log.Info("Running deposit tests")
+		go func() {
+			if r.config.TestDeposits {
+				log.Info("Running deposit tests")
 				// The validators with an index < minGenesisActiveCount all have deposits already from the chain start.
 				// Skip all of those chain start validators by seeking to minGenesisActiveCount in the validator list
 				// for further deposit testing.
@@ -238,12 +238,12 @@ func (r *testRunner) testDepositsAndTx(ctx context.Context, g *errgroup.Group,
 						r.t.Error(errors.Wrap(err, "depositor.SendAndMine failed"))
 					}
 				}
-            }
-            // Only generate background transactions when relevant for the test.
-            if r.config.TestDeposits || r.config.TestFeature || r.config.UseBuilder {
-                r.testTxGeneration(ctx, g, keystorePath, []e2etypes.ComponentRunner{})
-            }
-        }()
+			}
+			// Only generate background transactions when relevant for the test.
+			if r.config.TestDeposits || r.config.TestFeature || r.config.UseBuilder {
+				r.testTxGeneration(ctx, g, keystorePath, []e2etypes.ComponentRunner{})
+			}
+		}()
 		if r.config.TestDeposits {
 			return depositCheckValidator.Start(ctx)
 		}

testing/endtoend/minimal_e2e_test.go

@@ -38,8 +38,8 @@ func TestEndToEnd_MinimalConfig(t *testing.T) {
 	r := e2eMinimal(t, cfg,
 		types.WithCheckpointSync(),
 		types.WithEpochs(10),
-		types.WithExitEpoch(4),    // Minimum due to ShardCommitteePeriod=4
-		types.WithLargeBlobs(),    // Use large blob transactions for BPO testing
+		types.WithExitEpoch(4), // Minimum due to ShardCommitteePeriod=4
+		types.WithLargeBlobs(), // Use large blob transactions for BPO testing
 	)
 	r.run()
-}
+}

testing/validator-mock/validator_client_mock.go

@@ -283,16 +283,18 @@ func (mr *MockValidatorClientMockRecorder) ProposeExit(ctx, in any) *gomock.Call
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "ProposeExit", reflect.TypeOf((*MockValidatorClient)(nil).ProposeExit), ctx, in)
 }
 
-// SetHost mocks base method.
-func (m *MockValidatorClient) SetHost(host string) {
+// EnsureReady mocks base method.
+func (m *MockValidatorClient) EnsureReady(ctx context.Context) bool {
 	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "SetHost", host)
+	ret := m.ctrl.Call(m, "EnsureReady", ctx)
+	ret0, _ := ret[0].(bool)
+	return ret0
 }
 
-// SetHost indicates an expected call of SetHost.
-func (mr *MockValidatorClientMockRecorder) SetHost(host any) *gomock.Call {
+// EnsureReady indicates an expected call of EnsureReady.
+func (mr *MockValidatorClientMockRecorder) EnsureReady(ctx any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetHost", reflect.TypeOf((*MockValidatorClient)(nil).SetHost), host)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EnsureReady", reflect.TypeOf((*MockValidatorClient)(nil).EnsureReady), ctx)
 }
 
 // StartEventStream mocks base method.

testing/validator-mock/validator_mock.go

@@ -128,18 +128,18 @@ func (mr *MockValidatorMockRecorder) EventsChan() *gomock.Call {
 	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EventsChan", reflect.TypeOf((*MockValidator)(nil).EventsChan))
 }
 
-// FindHealthyHost mocks base method.
-func (m *MockValidator) FindHealthyHost(arg0 context.Context) bool {
+// EnsureReady mocks base method.
+func (m *MockValidator) EnsureReady(arg0 context.Context) bool {
 	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "FindHealthyHost", arg0)
+	ret := m.ctrl.Call(m, "EnsureReady", arg0)
 	ret0, _ := ret[0].(bool)
 	return ret0
 }
 
-// FindHealthyHost indicates an expected call of FindHealthyHost.
-func (mr *MockValidatorMockRecorder) FindHealthyHost(arg0 any) *gomock.Call {
+// EnsureReady indicates an expected call of EnsureReady.
+func (mr *MockValidatorMockRecorder) EnsureReady(arg0 any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "FindHealthyHost", reflect.TypeOf((*MockValidator)(nil).FindHealthyHost), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "EnsureReady", reflect.TypeOf((*MockValidator)(nil).EnsureReady), arg0)
 }
 
 // GenesisTime mocks base method.

validator/accounts/BUILD.bazel

@@ -25,6 +25,7 @@ go_library(
     ],
     deps = [
         "//api/grpc:go_default_library",
+        "//api/rest:go_default_library",
         "//beacon-chain/core/blocks:go_default_library",
         "//cmd/validator/flags:go_default_library",
         "//config/fieldparams:go_default_library",

validator/accounts/cli_manager.go

@@ -3,14 +3,13 @@ package accounts
 import (
 	"context"
 	"io"
-	"net/http"
 	"os"
 	"time"
 
 	grpcutil "github.com/OffchainLabs/prysm/v7/api/grpc"
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/crypto/bls"
 	"github.com/OffchainLabs/prysm/v7/validator/accounts/wallet"
-	beaconApi "github.com/OffchainLabs/prysm/v7/validator/client/beacon-api"
 	iface "github.com/OffchainLabs/prysm/v7/validator/client/iface"
 	nodeClientFactory "github.com/OffchainLabs/prysm/v7/validator/client/node-client-factory"
 	validatorClientFactory "github.com/OffchainLabs/prysm/v7/validator/client/validator-client-factory"
@@ -77,22 +76,17 @@ func (acm *CLIManager) prepareBeaconClients(ctx context.Context) (*iface.Validat
 	}
 
 	ctx = grpcutil.AppendHeaders(ctx, acm.grpcHeaders)
-	grpcConn, err := grpc.DialContext(ctx, acm.beaconRPCProvider, acm.dialOpts...)
-	if err != nil {
-		return nil, nil, errors.Wrapf(err, "could not dial endpoint %s", acm.beaconRPCProvider)
-	}
-	conn := validatorHelpers.NewNodeConnection(
-		grpcConn,
-		acm.beaconApiEndpoint,
-		validatorHelpers.WithBeaconApiTimeout(acm.beaconApiTimeout),
-	)
 
-	restHandler := beaconApi.NewBeaconApiRestHandler(
-		http.Client{Timeout: acm.beaconApiTimeout},
-		acm.beaconApiEndpoint,
+	conn, err := validatorHelpers.NewNodeConnection(
+		validatorHelpers.WithGRPC(ctx, acm.beaconRPCProvider, acm.dialOpts),
+		validatorHelpers.WithREST(acm.beaconApiEndpoint, rest.WithHttpTimeout(acm.beaconApiTimeout)),
 	)
-	validatorClient := validatorClientFactory.NewValidatorClient(conn, restHandler)
-	nodeClient := nodeClientFactory.NewNodeClient(conn, restHandler)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	validatorClient := validatorClientFactory.NewValidatorClient(conn)
+	nodeClient := nodeClientFactory.NewNodeClient(conn)
 
 	return &validatorClient, &nodeClient, nil
 }

validator/client/BUILD.bazel

@@ -10,7 +10,6 @@ go_library(
         "log.go",
         "log_helpers.go",
         "metrics.go",
-        "multiple_endpoints_grpc_resolver.go",
         "propose.go",
         "registration.go",
         "runner.go",
@@ -29,6 +28,7 @@ go_library(
         "//api/client:go_default_library",
         "//api/client/event:go_default_library",
         "//api/grpc:go_default_library",
+        "//api/rest:go_default_library",
         "//api/server/structs:go_default_library",
         "//async:go_default_library",
         "//async/event:go_default_library",
@@ -58,7 +58,6 @@ go_library(
         "//time/slots:go_default_library",
         "//validator/accounts/iface:go_default_library",
         "//validator/accounts/wallet:go_default_library",
-        "//validator/client/beacon-api:go_default_library",
         "//validator/client/beacon-chain-client-factory:go_default_library",
         "//validator/client/iface:go_default_library",
         "//validator/client/node-client-factory:go_default_library",
@@ -86,13 +85,11 @@ go_library(
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@io_opentelemetry_go_contrib_instrumentation_google_golang_org_grpc_otelgrpc//:go_default_library",
-        "@io_opentelemetry_go_contrib_instrumentation_net_http_otelhttp//:go_default_library",
         "@io_opentelemetry_go_otel_trace//:go_default_library",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//codes:go_default_library",
         "@org_golang_google_grpc//credentials:go_default_library",
         "@org_golang_google_grpc//metadata:go_default_library",
-        "@org_golang_google_grpc//resolver:go_default_library",
         "@org_golang_google_grpc//status:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
@@ -124,6 +121,7 @@ go_test(
     ],
     embed = [":go_default_library"],
     deps = [
+        "//api/grpc:go_default_library",
         "//api/server/structs:go_default_library",
         "//async/event:go_default_library",
         "//beacon-chain/core/signing:go_default_library",

validator/client/beacon-api/BUILD.bazel

@@ -26,7 +26,6 @@ go_library(
         "propose_exit.go",
         "prysm_beacon_chain_client.go",
         "registration.go",
-        "rest_handler_client.go",
         "state_validators.go",
         "status.go",
         "stream_blocks.go",
@@ -43,6 +42,8 @@ go_library(
         "//api:go_default_library",
         "//api/apiutil:go_default_library",
         "//api/client/event:go_default_library",
+        "//api/fallback:go_default_library",
+        "//api/rest:go_default_library",
         "//api/server/structs:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/core/signing:go_default_library",
@@ -111,6 +112,7 @@ go_test(
     deps = [
         "//api:go_default_library",
         "//api/apiutil:go_default_library",
+        "//api/rest:go_default_library",
         "//api/server/structs:go_default_library",
         "//beacon-chain/core/helpers:go_default_library",
         "//beacon-chain/rpc/eth/shared/testing:go_default_library",

validator/client/beacon-api/attestation_data.go

@@ -26,7 +26,7 @@ func (c *beaconApiValidatorClient) attestationData(
 	query := apiutil.BuildURL("/eth/v1/validator/attestation_data", params)
 	produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
 
-	if err := c.jsonRestHandler.Get(ctx, query, &produceAttestationDataResponseJson); err != nil {
+	if err := c.handler.Get(ctx, query, &produceAttestationDataResponseJson); err != nil {
 		return nil, err
 	}
 

validator/client/beacon-api/attestation_data_test.go

@@ -28,10 +28,10 @@ func TestGetAttestationData_ValidAttestation(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 	produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v1/validator/attestation_data?committee_index=%d&slot=%d", expectedCommitteeIndex, expectedSlot),
 		&produceAttestationDataResponseJson,
@@ -56,7 +56,7 @@ func TestGetAttestationData_ValidAttestation(t *testing.T) {
 		},
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	resp, err := validatorClient.attestationData(ctx, primitives.Slot(expectedSlot), primitives.CommitteeIndex(expectedCommitteeIndex))
 	assert.NoError(t, err)
 
@@ -180,8 +180,8 @@ func TestGetAttestationData_InvalidData(t *testing.T) {
 			defer ctrl.Finish()
 
 			produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-			jsonRestHandler.EXPECT().Get(
+			handler := mock.NewMockJsonRestHandler(ctrl)
+			handler.EXPECT().Get(
 				gomock.Any(),
 				"/eth/v1/validator/attestation_data?committee_index=2&slot=1",
 				&produceAttestationDataResponseJson,
@@ -192,7 +192,7 @@ func TestGetAttestationData_InvalidData(t *testing.T) {
 				testCase.generateData(),
 			).Times(1)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			_, err := validatorClient.attestationData(ctx, 1, 2)
 			assert.ErrorContains(t, testCase.expectedErrorMessage, err)
 		})
@@ -208,9 +208,9 @@ func TestGetAttestationData_JsonResponseError(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 	produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v1/validator/attestation_data?committee_index=%d&slot=%d", committeeIndex, slot),
 		&produceAttestationDataResponseJson,
@@ -218,7 +218,7 @@ func TestGetAttestationData_JsonResponseError(t *testing.T) {
 		errors.New("some specific json response error"),
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err := validatorClient.attestationData(ctx, slot, committeeIndex)
 	assert.ErrorContains(t, "some specific json response error", err)
 }

validator/client/beacon-api/beacon_api_beacon_chain_client.go

@@ -5,6 +5,7 @@ import (
 	"reflect"
 	"strconv"
 
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/api/server/structs"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
@@ -17,13 +18,13 @@ import (
 
 type beaconApiChainClient struct {
 	fallbackClient          iface.ChainClient
-	jsonRestHandler         RestHandler
+	handler                 rest.Handler
 	stateValidatorsProvider StateValidatorsProvider
 }
 
 func (c beaconApiChainClient) headBlockHeaders(ctx context.Context) (*structs.GetBlockHeaderResponse, error) {
 	blockHeader := structs.GetBlockHeaderResponse{}
-	err := c.jsonRestHandler.Get(ctx, "/eth/v1/beacon/headers/head", &blockHeader)
+	err := c.handler.Get(ctx, "/eth/v1/beacon/headers/head", &blockHeader)
 	if err != nil {
 		return nil, err
 	}
@@ -43,7 +44,7 @@ func (c beaconApiChainClient) ChainHead(ctx context.Context, _ *empty.Empty) (*e
 	const endpoint = "/eth/v1/beacon/states/head/finality_checkpoints"
 
 	finalityCheckpoints := structs.GetFinalityCheckpointsResponse{}
-	if err := c.jsonRestHandler.Get(ctx, endpoint, &finalityCheckpoints); err != nil {
+	if err := c.handler.Get(ctx, endpoint, &finalityCheckpoints); err != nil {
 		return nil, err
 	}
 
@@ -327,10 +328,10 @@ func (c beaconApiChainClient) ValidatorParticipation(ctx context.Context, in *et
 	return nil, errors.New("beaconApiChainClient.ValidatorParticipation is not implemented. To use a fallback client, pass a fallback client as the last argument of NewBeaconApiChainClientWithFallback.")
 }
 
-func NewBeaconApiChainClientWithFallback(jsonRestHandler RestHandler, fallbackClient iface.ChainClient) iface.ChainClient {
+func NewBeaconApiChainClientWithFallback(handler rest.Handler, fallbackClient iface.ChainClient) iface.ChainClient {
 	return &beaconApiChainClient{
-		jsonRestHandler:         jsonRestHandler,
+		handler:                 handler,
 		fallbackClient:          fallbackClient,
-		stateValidatorsProvider: beaconApiStateValidatorsProvider{jsonRestHandler: jsonRestHandler},
+		stateValidatorsProvider: beaconApiStateValidatorsProvider{handler: handler},
 	}
 }

validator/client/beacon-api/beacon_api_beacon_chain_client_test.go

@@ -115,12 +115,12 @@ func TestListValidators(t *testing.T) {
 			nil,
 		)
 
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-		jsonRestHandler.EXPECT().Get(gomock.Any(), blockHeaderEndpoint, gomock.Any()).Return(errors.New("bar error"))
+		handler := mock.NewMockJsonRestHandler(ctrl)
+		handler.EXPECT().Get(gomock.Any(), blockHeaderEndpoint, gomock.Any()).Return(errors.New("bar error"))
 
 		beaconChainClient := beaconApiChainClient{
 			stateValidatorsProvider: stateValidatorsProvider,
-			jsonRestHandler:         jsonRestHandler,
+			handler:                 handler,
 		}
 		_, err := beaconChainClient.Validators(ctx, &ethpb.ListValidatorsRequest{
 			QueryFilter: nil,
@@ -188,8 +188,8 @@ func TestListValidators(t *testing.T) {
 					nil,
 				)
 
-				jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-				jsonRestHandler.EXPECT().Get(gomock.Any(), blockHeaderEndpoint, gomock.Any()).Return(
+				handler := mock.NewMockJsonRestHandler(ctrl)
+				handler.EXPECT().Get(gomock.Any(), blockHeaderEndpoint, gomock.Any()).Return(
 					nil,
 				).SetArg(
 					2,
@@ -198,7 +198,7 @@ func TestListValidators(t *testing.T) {
 
 				beaconChainClient := beaconApiChainClient{
 					stateValidatorsProvider: stateValidatorsProvider,
-					jsonRestHandler:         jsonRestHandler,
+					handler:                 handler,
 				}
 				_, err := beaconChainClient.Validators(ctx, &ethpb.ListValidatorsRequest{
 					QueryFilter: nil,
@@ -740,15 +740,15 @@ func TestGetChainHead(t *testing.T) {
 				ctx := t.Context()
 
 				finalityCheckpointsResponse := structs.GetFinalityCheckpointsResponse{}
-				jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-				jsonRestHandler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
+				handler := mock.NewMockJsonRestHandler(ctrl)
+				handler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
 					testCase.finalityCheckpointsError,
 				).SetArg(
 					2,
 					testCase.generateFinalityCheckpointsResponse(),
 				)
 
-				beaconChainClient := beaconApiChainClient{jsonRestHandler: jsonRestHandler}
+				beaconChainClient := beaconApiChainClient{handler: handler}
 				_, err := beaconChainClient.ChainHead(ctx, &emptypb.Empty{})
 				assert.ErrorContains(t, testCase.expectedError, err)
 			})
@@ -837,10 +837,10 @@ func TestGetChainHead(t *testing.T) {
 				defer ctrl.Finish()
 				ctx := t.Context()
 
-				jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+				handler := mock.NewMockJsonRestHandler(ctrl)
 
 				finalityCheckpointsResponse := structs.GetFinalityCheckpointsResponse{}
-				jsonRestHandler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
+				handler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
 					nil,
 				).SetArg(
 					2,
@@ -848,14 +848,14 @@ func TestGetChainHead(t *testing.T) {
 				)
 
 				headBlockHeadersResponse := structs.GetBlockHeaderResponse{}
-				jsonRestHandler.EXPECT().Get(gomock.Any(), headBlockHeadersEndpoint, &headBlockHeadersResponse).Return(
+				handler.EXPECT().Get(gomock.Any(), headBlockHeadersEndpoint, &headBlockHeadersResponse).Return(
 					testCase.headBlockHeadersError,
 				).SetArg(
 					2,
 					testCase.generateHeadBlockHeadersResponse(),
 				)
 
-				beaconChainClient := beaconApiChainClient{jsonRestHandler: jsonRestHandler}
+				beaconChainClient := beaconApiChainClient{handler: handler}
 				_, err := beaconChainClient.ChainHead(ctx, &emptypb.Empty{})
 				assert.ErrorContains(t, testCase.expectedError, err)
 			})
@@ -867,10 +867,10 @@ func TestGetChainHead(t *testing.T) {
 		defer ctrl.Finish()
 		ctx := t.Context()
 
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		finalityCheckpointsResponse := structs.GetFinalityCheckpointsResponse{}
-		jsonRestHandler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
+		handler.EXPECT().Get(gomock.Any(), finalityCheckpointsEndpoint, &finalityCheckpointsResponse).Return(
 			nil,
 		).SetArg(
 			2,
@@ -878,7 +878,7 @@ func TestGetChainHead(t *testing.T) {
 		)
 
 		headBlockHeadersResponse := structs.GetBlockHeaderResponse{}
-		jsonRestHandler.EXPECT().Get(gomock.Any(), headBlockHeadersEndpoint, &headBlockHeadersResponse).Return(
+		handler.EXPECT().Get(gomock.Any(), headBlockHeadersEndpoint, &headBlockHeadersResponse).Return(
 			nil,
 		).SetArg(
 			2,
@@ -909,7 +909,7 @@ func TestGetChainHead(t *testing.T) {
 			HeadEpoch:                  slots.ToEpoch(8),
 		}
 
-		beaconChainClient := beaconApiChainClient{jsonRestHandler: jsonRestHandler}
+		beaconChainClient := beaconApiChainClient{handler: handler}
 		chainHead, err := beaconChainClient.ChainHead(ctx, &emptypb.Empty{})
 		require.NoError(t, err)
 		assert.DeepEqual(t, expectedChainHead, chainHead)

validator/client/beacon-api/beacon_api_helpers.go

@@ -29,7 +29,7 @@ func (c *beaconApiValidatorClient) fork(ctx context.Context) (*structs.GetStateF
 
 	stateForkResponseJson := &structs.GetStateForkResponse{}
 
-	if err := c.jsonRestHandler.Get(ctx, endpoint, stateForkResponseJson); err != nil {
+	if err := c.handler.Get(ctx, endpoint, stateForkResponseJson); err != nil {
 		return nil, err
 	}
 
@@ -41,7 +41,7 @@ func (c *beaconApiValidatorClient) headers(ctx context.Context) (*structs.GetBlo
 
 	blockHeadersResponseJson := &structs.GetBlockHeadersResponse{}
 
-	if err := c.jsonRestHandler.Get(ctx, endpoint, blockHeadersResponseJson); err != nil {
+	if err := c.handler.Get(ctx, endpoint, blockHeadersResponseJson); err != nil {
 		return nil, err
 	}
 
@@ -59,7 +59,7 @@ func (c *beaconApiValidatorClient) liveness(ctx context.Context, epoch primitive
 		return nil, errors.Wrapf(err, "failed to marshal validator indexes")
 	}
 
-	if err = c.jsonRestHandler.Post(ctx, url, nil, bytes.NewBuffer(marshalledJsonValidatorIndexes), livenessResponseJson); err != nil {
+	if err = c.handler.Post(ctx, url, nil, bytes.NewBuffer(marshalledJsonValidatorIndexes), livenessResponseJson); err != nil {
 		return nil, err
 	}
 
@@ -71,7 +71,7 @@ func (c *beaconApiValidatorClient) syncing(ctx context.Context) (*structs.SyncSt
 
 	syncingResponseJson := &structs.SyncStatusResponse{}
 
-	if err := c.jsonRestHandler.Get(ctx, endpoint, syncingResponseJson); err != nil {
+	if err := c.handler.Get(ctx, endpoint, syncingResponseJson); err != nil {
 		return nil, err
 	}
 

validator/client/beacon-api/beacon_api_helpers_test.go

@@ -20,7 +20,7 @@ func TestGetFork_Nominal(t *testing.T) {
 	defer ctrl.Finish()
 
 	stateForkResponseJson := structs.GetStateForkResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
 	expected := structs.GetStateForkResponse{
 		Data: &structs.Fork{
@@ -32,7 +32,7 @@ func TestGetFork_Nominal(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		forkEndpoint,
 		&stateForkResponseJson,
@@ -44,7 +44,7 @@ func TestGetFork_Nominal(t *testing.T) {
 	).Times(1)
 
 	validatorClient := beaconApiValidatorClient{
-		jsonRestHandler: jsonRestHandler,
+		handler: handler,
 	}
 
 	fork, err := validatorClient.fork(ctx)
@@ -56,11 +56,11 @@ func TestGetFork_Invalid(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
 	ctx := t.Context()
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		forkEndpoint,
 		gomock.Any(),
@@ -69,7 +69,7 @@ func TestGetFork_Invalid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := beaconApiValidatorClient{
-		jsonRestHandler: jsonRestHandler,
+		handler: handler,
 	}
 
 	_, err := validatorClient.fork(ctx)
@@ -83,7 +83,7 @@ func TestGetHeaders_Nominal(t *testing.T) {
 	defer ctrl.Finish()
 
 	blockHeadersResponseJson := structs.GetBlockHeadersResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
 	expected := structs.GetBlockHeadersResponse{
 		Data: []*structs.SignedBeaconBlockHeaderContainer{
@@ -99,7 +99,7 @@ func TestGetHeaders_Nominal(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		headersEndpoint,
 		&blockHeadersResponseJson,
@@ -111,7 +111,7 @@ func TestGetHeaders_Nominal(t *testing.T) {
 	).Times(1)
 
 	validatorClient := beaconApiValidatorClient{
-		jsonRestHandler: jsonRestHandler,
+		handler: handler,
 	}
 
 	headers, err := validatorClient.headers(ctx)
@@ -123,11 +123,11 @@ func TestGetHeaders_Invalid(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
 	ctx := t.Context()
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		headersEndpoint,
 		gomock.Any(),
@@ -136,7 +136,7 @@ func TestGetHeaders_Invalid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := beaconApiValidatorClient{
-		jsonRestHandler: jsonRestHandler,
+		handler: handler,
 	}
 
 	_, err := validatorClient.headers(ctx)
@@ -170,8 +170,8 @@ func TestGetLiveness_Nominal(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		livenessEndpoint,
 		nil,
@@ -184,7 +184,7 @@ func TestGetLiveness_Nominal(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	liveness, err := validatorClient.liveness(ctx, 42, indexes)
 
 	require.NoError(t, err)
@@ -197,8 +197,8 @@ func TestGetLiveness_Invalid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		livenessEndpoint,
 		nil,
@@ -208,7 +208,7 @@ func TestGetLiveness_Invalid(t *testing.T) {
 		errors.New("custom error"),
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err := validatorClient.liveness(ctx, 42, nil)
 
 	require.ErrorContains(t, "custom error", err)
@@ -237,7 +237,7 @@ func TestGetIsSyncing_Nominal(t *testing.T) {
 			defer ctrl.Finish()
 
 			syncingResponseJson := structs.SyncStatusResponse{}
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			expected := structs.SyncStatusResponse{
 				Data: &structs.SyncStatusResponseData{
@@ -247,7 +247,7 @@ func TestGetIsSyncing_Nominal(t *testing.T) {
 
 			ctx := t.Context()
 
-			jsonRestHandler.EXPECT().Get(
+			handler.EXPECT().Get(
 				gomock.Any(),
 				syncingEndpoint,
 				&syncingResponseJson,
@@ -259,7 +259,7 @@ func TestGetIsSyncing_Nominal(t *testing.T) {
 			).Times(1)
 
 			validatorClient := beaconApiValidatorClient{
-				jsonRestHandler: jsonRestHandler,
+				handler: handler,
 			}
 
 			isSyncing, err := validatorClient.isSyncing(ctx)
@@ -274,11 +274,11 @@ func TestGetIsSyncing_Invalid(t *testing.T) {
 	defer ctrl.Finish()
 
 	syncingResponseJson := structs.SyncStatusResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
 	ctx := t.Context()
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		syncingEndpoint,
 		&syncingResponseJson,
@@ -287,7 +287,7 @@ func TestGetIsSyncing_Invalid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := beaconApiValidatorClient{
-		jsonRestHandler: jsonRestHandler,
+		handler: handler,
 	}
 
 	isSyncing, err := validatorClient.isSyncing(ctx)

validator/client/beacon-api/beacon_api_node_client.go

@@ -5,6 +5,7 @@ import (
 	"net/http"
 	"strconv"
 
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/api/server/structs"
 	ethpb "github.com/OffchainLabs/prysm/v7/proto/prysm/v1alpha1"
 	"github.com/OffchainLabs/prysm/v7/validator/client/iface"
@@ -20,13 +21,13 @@ var (
 
 type beaconApiNodeClient struct {
 	fallbackClient  iface.NodeClient
-	jsonRestHandler RestHandler
+	handler         rest.Handler
 	genesisProvider GenesisProvider
 }
 
 func (c *beaconApiNodeClient) SyncStatus(ctx context.Context, _ *empty.Empty) (*ethpb.SyncStatus, error) {
 	syncingResponse := structs.SyncStatusResponse{}
-	if err := c.jsonRestHandler.Get(ctx, "/eth/v1/node/syncing", &syncingResponse); err != nil {
+	if err := c.handler.Get(ctx, "/eth/v1/node/syncing", &syncingResponse); err != nil {
 		return nil, err
 	}
 
@@ -56,7 +57,7 @@ func (c *beaconApiNodeClient) Genesis(ctx context.Context, _ *empty.Empty) (*eth
 	}
 
 	depositContractJson := structs.GetDepositContractResponse{}
-	if err = c.jsonRestHandler.Get(ctx, "/eth/v1/config/deposit_contract", &depositContractJson); err != nil {
+	if err = c.handler.Get(ctx, "/eth/v1/config/deposit_contract", &depositContractJson); err != nil {
 		return nil, err
 	}
 
@@ -80,7 +81,7 @@ func (c *beaconApiNodeClient) Genesis(ctx context.Context, _ *empty.Empty) (*eth
 
 func (c *beaconApiNodeClient) Version(ctx context.Context, _ *empty.Empty) (*ethpb.Version, error) {
 	var versionResponse structs.GetVersionResponse
-	if err := c.jsonRestHandler.Get(ctx, "/eth/v1/node/version", &versionResponse); err != nil {
+	if err := c.handler.Get(ctx, "/eth/v1/node/version", &versionResponse); err != nil {
 		return nil, err
 	}
 
@@ -105,9 +106,9 @@ func (c *beaconApiNodeClient) Peers(ctx context.Context, in *empty.Empty) (*ethp
 // IsReady returns true only if the node is fully synced (200 OK).
 // A 206 Partial Content response indicates the node is syncing and not ready.
 func (c *beaconApiNodeClient) IsReady(ctx context.Context) bool {
-	statusCode, err := c.jsonRestHandler.GetStatusCode(ctx, "/eth/v1/node/health")
+	statusCode, err := c.handler.GetStatusCode(ctx, "/eth/v1/node/health")
 	if err != nil {
-		log.WithError(err).Error("failed to get health of node")
+		log.WithError(err).WithField("url", c.handler.Host()).Error("failed to get health of node")
 		return false
 	}
 	// Only 200 OK means the node is fully synced and ready.
@@ -115,11 +116,11 @@ func (c *beaconApiNodeClient) IsReady(ctx context.Context) bool {
 	return statusCode == http.StatusOK
 }
 
-func NewNodeClientWithFallback(jsonRestHandler RestHandler, fallbackClient iface.NodeClient) iface.NodeClient {
+func NewNodeClientWithFallback(handler rest.Handler, fallbackClient iface.NodeClient) iface.NodeClient {
 	b := &beaconApiNodeClient{
-		jsonRestHandler: jsonRestHandler,
+		handler:         handler,
 		fallbackClient:  fallbackClient,
-		genesisProvider: &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler},
+		genesisProvider: &beaconApiGenesisProvider{handler: handler},
 	}
 	return b
 }

validator/client/beacon-api/beacon_api_node_client_test.go

@@ -120,10 +120,10 @@ func TestGetGenesis(t *testing.T) {
 			)
 
 			depositContractJson := structs.GetDepositContractResponse{}
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			if testCase.queriesDepositContract {
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					"/eth/v1/config/deposit_contract",
 					&depositContractJson,
@@ -137,7 +137,7 @@ func TestGetGenesis(t *testing.T) {
 
 			nodeClient := &beaconApiNodeClient{
 				genesisProvider: genesisProvider,
-				jsonRestHandler: jsonRestHandler,
+				handler:         handler,
 			}
 			response, err := nodeClient.Genesis(ctx, &emptypb.Empty{})
 
@@ -201,8 +201,8 @@ func TestGetSyncStatus(t *testing.T) {
 			ctx := t.Context()
 
 			syncingResponse := structs.SyncStatusResponse{}
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-			jsonRestHandler.EXPECT().Get(
+			handler := mock.NewMockJsonRestHandler(ctrl)
+			handler.EXPECT().Get(
 				gomock.Any(),
 				syncingEndpoint,
 				&syncingResponse,
@@ -213,7 +213,7 @@ func TestGetSyncStatus(t *testing.T) {
 				testCase.restEndpointResponse,
 			)
 
-			nodeClient := &beaconApiNodeClient{jsonRestHandler: jsonRestHandler}
+			nodeClient := &beaconApiNodeClient{handler: handler}
 			syncStatus, err := nodeClient.SyncStatus(ctx, &emptypb.Empty{})
 
 			if testCase.expectedResponse == nil {
@@ -265,8 +265,8 @@ func TestGetVersion(t *testing.T) {
 			ctx := t.Context()
 
 			var versionResponse structs.GetVersionResponse
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-			jsonRestHandler.EXPECT().Get(
+			handler := mock.NewMockJsonRestHandler(ctrl)
+			handler.EXPECT().Get(
 				gomock.Any(),
 				versionEndpoint,
 				&versionResponse,
@@ -277,7 +277,7 @@ func TestGetVersion(t *testing.T) {
 				testCase.restEndpointResponse,
 			)
 
-			nodeClient := &beaconApiNodeClient{jsonRestHandler: jsonRestHandler}
+			nodeClient := &beaconApiNodeClient{handler: handler}
 			version, err := nodeClient.Version(ctx, &emptypb.Empty{})
 
 			if testCase.expectedResponse == nil {
@@ -331,13 +331,14 @@ func TestIsReady(t *testing.T) {
 			defer ctrl.Finish()
 			ctx := t.Context()
 
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-			jsonRestHandler.EXPECT().GetStatusCode(
+			handler := mock.NewMockJsonRestHandler(ctrl)
+			handler.EXPECT().GetStatusCode(
 				gomock.Any(),
 				healthEndpoint,
 			).Return(tc.statusCode, tc.err)
+			handler.EXPECT().Host().Return("http://localhost:3500").AnyTimes()
 
-			nodeClient := &beaconApiNodeClient{jsonRestHandler: jsonRestHandler}
+			nodeClient := &beaconApiNodeClient{handler: handler}
 			result := nodeClient.IsReady(ctx)
 
 			assert.Equal(t, tc.expectedResult, result)

validator/client/beacon-api/beacon_api_validator_client.go

@@ -6,6 +6,8 @@ import (
 	"time"
 
 	"github.com/OffchainLabs/prysm/v7/api/client/event"
+	"github.com/OffchainLabs/prysm/v7/api/fallback"
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
 	"github.com/OffchainLabs/prysm/v7/monitoring/tracing/trace"
@@ -22,22 +24,28 @@ type beaconApiValidatorClient struct {
 	genesisProvider         GenesisProvider
 	dutiesProvider          dutiesProvider
 	stateValidatorsProvider StateValidatorsProvider
-	jsonRestHandler         RestHandler
+	restProvider            rest.RestConnectionProvider
+	handler                 rest.Handler
+	nodeClient              *beaconApiNodeClient
 	beaconBlockConverter    BeaconBlockConverter
 	prysmChainClient        iface.PrysmChainClient
 	isEventStreamRunning    bool
 }
 
-func NewBeaconApiValidatorClient(jsonRestHandler RestHandler, opts ...ValidatorClientOpt) iface.ValidatorClient {
+func NewBeaconApiValidatorClient(provider rest.RestConnectionProvider, opts ...ValidatorClientOpt) iface.ValidatorClient {
+	handler := provider.Handler()
+	nc := &beaconApiNodeClient{handler: handler}
 	c := &beaconApiValidatorClient{
-		genesisProvider:         &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler},
-		dutiesProvider:          beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler},
-		stateValidatorsProvider: beaconApiStateValidatorsProvider{jsonRestHandler: jsonRestHandler},
-		jsonRestHandler:         jsonRestHandler,
+		genesisProvider:         &beaconApiGenesisProvider{handler: handler},
+		dutiesProvider:          beaconApiDutiesProvider{handler: handler},
+		stateValidatorsProvider: beaconApiStateValidatorsProvider{handler: handler},
+		restProvider:            provider,
+		handler:                 handler,
+		nodeClient:              nc,
 		beaconBlockConverter:    beaconApiBeaconBlockConverter{},
 		prysmChainClient: prysmChainClient{
-			nodeClient:      &beaconApiNodeClient{jsonRestHandler: jsonRestHandler},
-			jsonRestHandler: jsonRestHandler,
+			nodeClient: nc,
+			handler:    handler,
 		},
 		isEventStreamRunning: false,
 	}
@@ -279,8 +287,8 @@ func (c *beaconApiValidatorClient) WaitForChainStart(ctx context.Context, _ *emp
 }
 
 func (c *beaconApiValidatorClient) StartEventStream(ctx context.Context, topics []string, eventsChannel chan<- *event.Event) {
-	client := &http.Client{} // event stream should not be subject to the same settings as other api calls, so we won't use c.jsonRestHandler.HttpClient()
-	eventStream, err := event.NewEventStream(ctx, client, c.jsonRestHandler.Host(), topics)
+	client := &http.Client{} // event stream should not be subject to the same settings as other api calls
+	eventStream, err := event.NewEventStream(ctx, client, c.handler.Host(), topics)
 	if err != nil {
 		eventsChannel <- &event.Event{
 			EventType: event.EventError,
@@ -328,9 +336,9 @@ func wrapInMetrics[Resp any](action string, f func() (Resp, error)) (Resp, error
 }
 
 func (c *beaconApiValidatorClient) Host() string {
-	return c.jsonRestHandler.Host()
+	return c.handler.Host()
 }
 
-func (c *beaconApiValidatorClient) SetHost(host string) {
-	c.jsonRestHandler.SetHost(host)
+func (c *beaconApiValidatorClient) EnsureReady(ctx context.Context) bool {
+	return fallback.EnsureReady(ctx, c.restProvider, c.nodeClient)
 }

validator/client/beacon-api/beacon_api_validator_client_test.go

@@ -31,9 +31,9 @@ func TestBeaconApiValidatorClient_GetAttestationDataValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 	produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v1/validator/attestation_data?committee_index=%d&slot=%d", committeeIndex, slot),
 		&produceAttestationDataResponseJson,
@@ -44,7 +44,7 @@ func TestBeaconApiValidatorClient_GetAttestationDataValid(t *testing.T) {
 		generateValidAttestation(uint64(slot), uint64(committeeIndex)),
 	).Times(2)
 
-	validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := beaconApiValidatorClient{handler: handler}
 	expectedResp, expectedErr := validatorClient.attestationData(ctx, slot, committeeIndex)
 
 	resp, err := validatorClient.AttestationData(
@@ -65,9 +65,9 @@ func TestBeaconApiValidatorClient_GetAttestationDataError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 	produceAttestationDataResponseJson := structs.GetAttestationDataResponse{}
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v1/validator/attestation_data?committee_index=%d&slot=%d", committeeIndex, slot),
 		&produceAttestationDataResponseJson,
@@ -78,7 +78,7 @@ func TestBeaconApiValidatorClient_GetAttestationDataError(t *testing.T) {
 		generateValidAttestation(uint64(slot), uint64(committeeIndex)),
 	).Times(2)
 
-	validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := beaconApiValidatorClient{handler: handler}
 	expectedResp, expectedErr := validatorClient.attestationData(ctx, slot, committeeIndex)
 
 	resp, err := validatorClient.AttestationData(
@@ -139,8 +139,8 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().PostSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().PostSSZ(
 		gomock.Any(),
 		"/eth/v2/beacon/blocks",
 		gomock.Any(),
@@ -149,7 +149,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockValid(t *testing.T) {
 		nil, nil, nil,
 	).Times(1)
 
-	validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := beaconApiValidatorClient{handler: handler}
 	expectedResp, expectedErr := validatorClient.proposeBeaconBlock(
 		ctx,
 		&ethpb.GenericSignedBeaconBlock{
@@ -166,8 +166,8 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockError_ThenPass(t *testing.T)
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().PostSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().PostSSZ(
 		gomock.Any(),
 		"/eth/v2/beacon/blocks",
 		gomock.Any(),
@@ -179,7 +179,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockError_ThenPass(t *testing.T)
 		},
 	).Times(1)
 
-	jsonRestHandler.EXPECT().Post(
+	handler.EXPECT().Post(
 		gomock.Any(),
 		"/eth/v2/beacon/blocks",
 		gomock.Any(),
@@ -189,7 +189,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockError_ThenPass(t *testing.T)
 		nil,
 	).Times(1)
 
-	validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := beaconApiValidatorClient{handler: handler}
 	expectedResp, expectedErr := validatorClient.proposeBeaconBlock(
 		ctx,
 		&ethpb.GenericSignedBeaconBlock{
@@ -308,10 +308,10 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockAllTypes(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			if !tt.wantErr {
-				jsonRestHandler.EXPECT().PostSSZ(
+				handler.EXPECT().PostSSZ(
 					gomock.Any(),
 					tt.expectedPath,
 					gomock.Any(),
@@ -319,7 +319,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockAllTypes(t *testing.T) {
 				).Return(nil, nil, nil).Times(1)
 			}
 
-			validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := beaconApiValidatorClient{handler: handler}
 			resp, err := validatorClient.proposeBeaconBlock(ctx, tt.block)
 
 			if tt.wantErr {
@@ -366,9 +366,9 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockHTTPErrors(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
-			jsonRestHandler.EXPECT().PostSSZ(
+			handler.EXPECT().PostSSZ(
 				gomock.Any(),
 				"/eth/v2/beacon/blocks",
 				gomock.Any(),
@@ -377,7 +377,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockHTTPErrors(t *testing.T) {
 
 			if tt.expectJSON {
 				// When SSZ fails, it falls back to JSON
-				jsonRestHandler.EXPECT().Post(
+				handler.EXPECT().Post(
 					gomock.Any(),
 					"/eth/v2/beacon/blocks",
 					gomock.Any(),
@@ -386,7 +386,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockHTTPErrors(t *testing.T) {
 				).Return(tt.sszError).Times(1)
 			}
 
-			validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := beaconApiValidatorClient{handler: handler}
 			_, err := validatorClient.proposeBeaconBlock(
 				ctx,
 				&ethpb.GenericSignedBeaconBlock{
@@ -507,10 +507,10 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockJSONFallback(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			// SSZ call fails with 406 to trigger JSON fallback
-			jsonRestHandler.EXPECT().PostSSZ(
+			handler.EXPECT().PostSSZ(
 				gomock.Any(),
 				tt.expectedPath,
 				gomock.Any(),
@@ -521,7 +521,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockJSONFallback(t *testing.T) {
 			}).Times(1)
 
 			// JSON fallback
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				tt.expectedPath,
 				gomock.Any(),
@@ -529,7 +529,7 @@ func TestBeaconApiValidatorClient_ProposeBeaconBlockJSONFallback(t *testing.T) {
 				gomock.Any(),
 			).Return(tt.jsonError).Times(1)
 
-			validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := beaconApiValidatorClient{handler: handler}
 			resp, err := validatorClient.proposeBeaconBlock(ctx, tt.block)
 
 			if tt.wantErr {
@@ -547,29 +547,12 @@ func TestBeaconApiValidatorClient_Host(t *testing.T) {
 	ctrl := gomock.NewController(t)
 	defer ctrl.Finish()
 
-	hosts := []string{"http://localhost:8080", "http://localhost:8081"}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().SetHost(
-		hosts[0],
-	).Times(1)
-	jsonRestHandler.EXPECT().Host().Return(
-		hosts[0],
-	).Times(1)
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Host().Return("http://localhost:8080").Times(1)
 
-	validatorClient := beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	validatorClient.SetHost(hosts[0])
+	validatorClient := beaconApiValidatorClient{handler: handler}
 	host := validatorClient.Host()
-	require.Equal(t, hosts[0], host)
-
-	jsonRestHandler.EXPECT().SetHost(
-		hosts[1],
-	).Times(1)
-	jsonRestHandler.EXPECT().Host().Return(
-		hosts[1],
-	).Times(1)
-	validatorClient.SetHost(hosts[1])
-	host = validatorClient.Host()
-	require.Equal(t, hosts[1], host)
+	require.Equal(t, "http://localhost:8080", host)
 }
 
 // Helper functions for generating test blocks for newer consensus versions

validator/client/beacon-api/beacon_committee_selections.go

@@ -20,7 +20,7 @@ func (c *beaconApiValidatorClient) aggregatedSelection(ctx context.Context, sele
 	}
 
 	var resp aggregatedSelectionResponse
-	err = c.jsonRestHandler.Post(ctx, "/eth/v1/validator/beacon_committee_selections", nil, bytes.NewBuffer(body), &resp)
+	err = c.handler.Post(ctx, "/eth/v1/validator/beacon_committee_selections", nil, bytes.NewBuffer(body), &resp)
 	if err != nil {
 		return nil, errors.Wrap(err, "error calling post endpoint")
 	}

validator/client/beacon-api/beacon_committee_selections_test.go

@@ -89,13 +89,13 @@ func TestGetAggregatedSelections(t *testing.T) {
 	for _, test := range testcases {
 		t.Run(test.name, func(t *testing.T) {
 			ctrl := gomock.NewController(t)
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			reqBody, err := json.Marshal(test.req)
 			require.NoError(t, err)
 
 			ctx := t.Context()
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				"/eth/v1/validator/beacon_committee_selections",
 				nil,
@@ -108,7 +108,7 @@ func TestGetAggregatedSelections(t *testing.T) {
 				test.endpointError,
 			).Times(1)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			res, err := validatorClient.AggregatedSelections(ctx, test.req)
 			if test.expectedErrorMessage != "" {
 				require.ErrorContains(t, test.expectedErrorMessage, err)

validator/client/beacon-api/doppelganger_test.go

@@ -288,12 +288,12 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 			ctrl := gomock.NewController(t)
 			defer ctrl.Finish()
 
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			if testCase.getSyncingOutput != nil {
 				syncingResponseJson := structs.SyncStatusResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					syncingEndpoint,
 					&syncingResponseJson,
@@ -308,7 +308,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 			if testCase.getForkOutput != nil {
 				stateForkResponseJson := structs.GetStateForkResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					forkEndpoint,
 					&stateForkResponseJson,
@@ -323,7 +323,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 			if testCase.getHeadersOutput != nil {
 				blockHeadersResponseJson := structs.GetBlockHeadersResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					headersEndpoint,
 					&blockHeadersResponseJson,
@@ -342,7 +342,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 					marshalledIndexes, err := json.Marshal(iface.inputStringIndexes)
 					require.NoError(t, err)
 
-					jsonRestHandler.EXPECT().Post(
+					handler.EXPECT().Post(
 						gomock.Any(),
 						iface.inputUrl,
 						nil,
@@ -372,7 +372,7 @@ func TestCheckDoppelGanger_Nominal(t *testing.T) {
 			}
 
 			validatorClient := beaconApiValidatorClient{
-				jsonRestHandler:         jsonRestHandler,
+				handler:                 handler,
 				stateValidatorsProvider: stateValidatorsProvider,
 			}
 
@@ -722,12 +722,12 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 			ctrl := gomock.NewController(t)
 			defer ctrl.Finish()
 
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			if testCase.getSyncingOutput != nil {
 				syncingResponseJson := structs.SyncStatusResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					syncingEndpoint,
 					&syncingResponseJson,
@@ -742,7 +742,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 			if testCase.getForkOutput != nil {
 				stateForkResponseJson := structs.GetStateForkResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					forkEndpoint,
 					&stateForkResponseJson,
@@ -757,7 +757,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 			if testCase.getHeadersOutput != nil {
 				blockHeadersResponseJson := structs.GetBlockHeadersResponse{}
 
-				jsonRestHandler.EXPECT().Get(
+				handler.EXPECT().Get(
 					gomock.Any(),
 					headersEndpoint,
 					&blockHeadersResponseJson,
@@ -790,7 +790,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 					marshalledIndexes, err := json.Marshal(iface.inputStringIndexes)
 					require.NoError(t, err)
 
-					jsonRestHandler.EXPECT().Post(
+					handler.EXPECT().Post(
 						gomock.Any(),
 						iface.inputUrl,
 						nil,
@@ -806,7 +806,7 @@ func TestCheckDoppelGanger_Errors(t *testing.T) {
 			}
 
 			validatorClient := beaconApiValidatorClient{
-				jsonRestHandler:         jsonRestHandler,
+				handler:                 handler,
 				stateValidatorsProvider: stateValidatorsProvider,
 			}
 

validator/client/beacon-api/duties.go

@@ -9,6 +9,7 @@ import (
 	"strconv"
 
 	"github.com/OffchainLabs/prysm/v7/api/apiutil"
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/api/server/structs"
 	"github.com/OffchainLabs/prysm/v7/config/params"
 	"github.com/OffchainLabs/prysm/v7/consensus-types/primitives"
@@ -27,7 +28,7 @@ type dutiesProvider interface {
 }
 
 type beaconApiDutiesProvider struct {
-	jsonRestHandler RestHandler
+	handler rest.Handler
 }
 
 type attesterDuty struct {
@@ -278,7 +279,7 @@ func (c beaconApiDutiesProvider) Committees(ctx context.Context, epoch primitive
 	committeesRequest := apiutil.BuildURL("/eth/v1/beacon/states/head/committees", committeeParams)
 
 	var stateCommittees structs.GetCommitteesResponse
-	if err := c.jsonRestHandler.Get(ctx, committeesRequest, &stateCommittees); err != nil {
+	if err := c.handler.Get(ctx, committeesRequest, &stateCommittees); err != nil {
 		return nil, err
 	}
 
@@ -308,7 +309,7 @@ func (c beaconApiDutiesProvider) AttesterDuties(ctx context.Context, epoch primi
 	}
 
 	attesterDuties := &structs.GetAttesterDutiesResponse{}
-	if err = c.jsonRestHandler.Post(
+	if err = c.handler.Post(
 		ctx,
 		fmt.Sprintf("/eth/v1/validator/duties/attester/%d", epoch),
 		nil,
@@ -330,7 +331,7 @@ func (c beaconApiDutiesProvider) AttesterDuties(ctx context.Context, epoch primi
 // ProposerDuties retrieves the proposer duties for the given epoch
 func (c beaconApiDutiesProvider) ProposerDuties(ctx context.Context, epoch primitives.Epoch) (*structs.GetProposerDutiesResponse, error) {
 	proposerDuties := &structs.GetProposerDutiesResponse{}
-	if err := c.jsonRestHandler.Get(ctx, fmt.Sprintf("/eth/v1/validator/duties/proposer/%d", epoch), proposerDuties); err != nil {
+	if err := c.handler.Get(ctx, fmt.Sprintf("/eth/v1/validator/duties/proposer/%d", epoch), proposerDuties); err != nil {
 		return nil, err
 	}
 
@@ -360,7 +361,7 @@ func (c beaconApiDutiesProvider) SyncDuties(ctx context.Context, epoch primitive
 	}
 
 	syncDuties := structs.GetSyncCommitteeDutiesResponse{}
-	if err = c.jsonRestHandler.Post(
+	if err = c.handler.Post(
 		ctx,
 		fmt.Sprintf("/eth/v1/validator/duties/sync/%d", epoch),
 		nil,

validator/client/beacon-api/duties_test.go

@@ -60,8 +60,8 @@ func TestGetAttesterDuties_Valid(t *testing.T) {
 	ctx := t.Context()
 
 	validatorIndices := []primitives.ValidatorIndex{2, 9}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getAttesterDutiesTestEndpoint, epoch),
 		nil,
@@ -74,7 +74,7 @@ func TestGetAttesterDuties_Valid(t *testing.T) {
 		expectedAttesterDuties,
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	attesterDuties, err := dutiesProvider.AttesterDuties(ctx, epoch, validatorIndices)
 	require.NoError(t, err)
 	assert.DeepEqual(t, expectedAttesterDuties.Data, attesterDuties.Data)
@@ -88,8 +88,8 @@ func TestGetAttesterDuties_HttpError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getAttesterDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -99,7 +99,7 @@ func TestGetAttesterDuties_HttpError(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.AttesterDuties(ctx, epoch, nil)
 	assert.ErrorContains(t, "foo error", err)
 }
@@ -112,8 +112,8 @@ func TestGetAttesterDuties_NilAttesterDuty(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getAttesterDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -128,7 +128,7 @@ func TestGetAttesterDuties_NilAttesterDuty(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.AttesterDuties(ctx, epoch, nil)
 	assert.ErrorContains(t, "attester duty at index `0` is nil", err)
 }
@@ -156,8 +156,8 @@ func TestGetProposerDuties_Valid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getProposerDutiesTestEndpoint, epoch),
 		&structs.GetProposerDutiesResponse{},
@@ -168,7 +168,7 @@ func TestGetProposerDuties_Valid(t *testing.T) {
 		expectedProposerDuties,
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	proposerDuties, err := dutiesProvider.ProposerDuties(ctx, epoch)
 	require.NoError(t, err)
 	assert.DeepEqual(t, expectedProposerDuties.Data, proposerDuties.Data)
@@ -182,8 +182,8 @@ func TestGetProposerDuties_HttpError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getProposerDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -191,7 +191,7 @@ func TestGetProposerDuties_HttpError(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.ProposerDuties(ctx, epoch)
 	assert.ErrorContains(t, "foo error", err)
 }
@@ -204,8 +204,8 @@ func TestGetProposerDuties_NilData(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getProposerDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -218,7 +218,7 @@ func TestGetProposerDuties_NilData(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.ProposerDuties(ctx, epoch)
 	assert.ErrorContains(t, "proposer duties data is nil", err)
 }
@@ -231,8 +231,8 @@ func TestGetProposerDuties_NilProposerDuty(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getProposerDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -245,7 +245,7 @@ func TestGetProposerDuties_NilProposerDuty(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.ProposerDuties(ctx, epoch)
 	assert.ErrorContains(t, "proposer duty at index `0` is nil", err)
 }
@@ -284,8 +284,8 @@ func TestGetSyncDuties_Valid(t *testing.T) {
 	ctx := t.Context()
 
 	validatorIndices := []primitives.ValidatorIndex{2, 6}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getSyncDutiesTestEndpoint, epoch),
 		nil,
@@ -298,7 +298,7 @@ func TestGetSyncDuties_Valid(t *testing.T) {
 		expectedSyncDuties,
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	syncDuties, err := dutiesProvider.SyncDuties(ctx, epoch, validatorIndices)
 	require.NoError(t, err)
 	assert.DeepEqual(t, expectedSyncDuties.Data, syncDuties)
@@ -312,8 +312,8 @@ func TestGetSyncDuties_HttpError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getSyncDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -323,7 +323,7 @@ func TestGetSyncDuties_HttpError(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.SyncDuties(ctx, epoch, nil)
 	assert.ErrorContains(t, "foo error", err)
 }
@@ -336,8 +336,8 @@ func TestGetSyncDuties_NilData(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getSyncDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -352,7 +352,7 @@ func TestGetSyncDuties_NilData(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.SyncDuties(ctx, epoch, nil)
 	assert.ErrorContains(t, "sync duties data is nil", err)
 }
@@ -365,8 +365,8 @@ func TestGetSyncDuties_NilSyncDuty(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		fmt.Sprintf("%s/%d", getSyncDutiesTestEndpoint, epoch),
 		gomock.Any(),
@@ -381,7 +381,7 @@ func TestGetSyncDuties_NilSyncDuty(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.SyncDuties(ctx, epoch, nil)
 	assert.ErrorContains(t, "sync duty at index `0` is nil", err)
 }
@@ -415,8 +415,8 @@ func TestGetCommittees_Valid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s?epoch=%d", getCommitteesTestEndpoint, epoch),
 		&structs.GetCommitteesResponse{},
@@ -427,7 +427,7 @@ func TestGetCommittees_Valid(t *testing.T) {
 		expectedCommittees,
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	committees, err := dutiesProvider.Committees(ctx, epoch)
 	require.NoError(t, err)
 	assert.DeepEqual(t, expectedCommittees.Data, committees)
@@ -441,8 +441,8 @@ func TestGetCommittees_HttpError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s?epoch=%d", getCommitteesTestEndpoint, epoch),
 		gomock.Any(),
@@ -450,7 +450,7 @@ func TestGetCommittees_HttpError(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.Committees(ctx, epoch)
 	assert.ErrorContains(t, "foo error", err)
 }
@@ -463,8 +463,8 @@ func TestGetCommittees_NilData(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s?epoch=%d", getCommitteesTestEndpoint, epoch),
 		gomock.Any(),
@@ -477,7 +477,7 @@ func TestGetCommittees_NilData(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.Committees(ctx, epoch)
 	assert.ErrorContains(t, "state committees data is nil", err)
 }
@@ -490,8 +490,8 @@ func TestGetCommittees_NilCommittee(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		fmt.Sprintf("%s?epoch=%d", getCommitteesTestEndpoint, epoch),
 		gomock.Any(),
@@ -504,7 +504,7 @@ func TestGetCommittees_NilCommittee(t *testing.T) {
 		},
 	).Times(1)
 
-	dutiesProvider := &beaconApiDutiesProvider{jsonRestHandler: jsonRestHandler}
+	dutiesProvider := &beaconApiDutiesProvider{handler: handler}
 	_, err := dutiesProvider.Committees(ctx, epoch)
 	assert.ErrorContains(t, "committee at index `0` is nil", err)
 }

validator/client/beacon-api/genesis.go

@@ -7,6 +7,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/OffchainLabs/prysm/v7/api/rest"
 	"github.com/OffchainLabs/prysm/v7/api/server/structs"
 	fieldparams "github.com/OffchainLabs/prysm/v7/config/fieldparams"
 	"github.com/OffchainLabs/prysm/v7/encoding/bytesutil"
@@ -20,9 +21,9 @@ type GenesisProvider interface {
 }
 
 type beaconApiGenesisProvider struct {
-	jsonRestHandler RestHandler
-	genesis         *structs.Genesis
-	once            sync.Once
+	handler rest.Handler
+	genesis *structs.Genesis
+	once    sync.Once
 }
 
 func (c *beaconApiValidatorClient) waitForChainStart(ctx context.Context) (*ethpb.ChainStartResponse, error) {
@@ -68,7 +69,7 @@ func (c *beaconApiGenesisProvider) Genesis(ctx context.Context) (*structs.Genesi
 	genesisJson := &structs.GetGenesisResponse{}
 	var doErr error
 	c.once.Do(func() {
-		if err := c.jsonRestHandler.Get(ctx, "/eth/v1/beacon/genesis", genesisJson); err != nil {
+		if err := c.handler.Get(ctx, "/eth/v1/beacon/genesis", genesisJson); err != nil {
 			doErr = err
 			return
 		}

validator/client/beacon-api/genesis_test.go

@@ -18,8 +18,8 @@ func TestGetGenesis_ValidGenesis(t *testing.T) {
 	ctx := t.Context()
 
 	genesisResponseJson := structs.GetGenesisResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		"/eth/v1/beacon/genesis",
 		&genesisResponseJson,
@@ -35,7 +35,7 @@ func TestGetGenesis_ValidGenesis(t *testing.T) {
 		},
 	).Times(1)
 
-	genesisProvider := &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler}
+	genesisProvider := &beaconApiGenesisProvider{handler: handler}
 	resp, err := genesisProvider.Genesis(ctx)
 	assert.NoError(t, err)
 	require.NotNil(t, resp)
@@ -50,8 +50,8 @@ func TestGetGenesis_NilData(t *testing.T) {
 	ctx := t.Context()
 
 	genesisResponseJson := structs.GetGenesisResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		"/eth/v1/beacon/genesis",
 		&genesisResponseJson,
@@ -62,7 +62,7 @@ func TestGetGenesis_NilData(t *testing.T) {
 		structs.GetGenesisResponse{Data: nil},
 	).Times(1)
 
-	genesisProvider := &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler}
+	genesisProvider := &beaconApiGenesisProvider{handler: handler}
 	_, err := genesisProvider.Genesis(ctx)
 	assert.ErrorContains(t, "genesis data is nil", err)
 }
@@ -74,8 +74,8 @@ func TestGetGenesis_EndpointCalledOnlyOnce(t *testing.T) {
 	ctx := t.Context()
 
 	genesisResponseJson := structs.GetGenesisResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		"/eth/v1/beacon/genesis",
 		&genesisResponseJson,
@@ -91,7 +91,7 @@ func TestGetGenesis_EndpointCalledOnlyOnce(t *testing.T) {
 		},
 	).Times(1)
 
-	genesisProvider := &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler}
+	genesisProvider := &beaconApiGenesisProvider{handler: handler}
 	_, err := genesisProvider.Genesis(ctx)
 	assert.NoError(t, err)
 	resp, err := genesisProvider.Genesis(ctx)
@@ -108,15 +108,15 @@ func TestGetGenesis_EndpointCanBeCalledAgainAfterError(t *testing.T) {
 	ctx := t.Context()
 
 	genesisResponseJson := structs.GetGenesisResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Get(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Get(
 		gomock.Any(),
 		"/eth/v1/beacon/genesis",
 		&genesisResponseJson,
 	).Return(
 		errors.New("foo"),
 	).Times(1)
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		"/eth/v1/beacon/genesis",
 		&genesisResponseJson,
@@ -132,7 +132,7 @@ func TestGetGenesis_EndpointCanBeCalledAgainAfterError(t *testing.T) {
 		},
 	).Times(1)
 
-	genesisProvider := &beaconApiGenesisProvider{jsonRestHandler: jsonRestHandler}
+	genesisProvider := &beaconApiGenesisProvider{handler: handler}
 	_, err := genesisProvider.Genesis(ctx)
 	require.ErrorContains(t, "foo", err)
 	resp, err := genesisProvider.Genesis(ctx)

validator/client/beacon-api/get_beacon_block.go

@@ -26,7 +26,7 @@ func (c *beaconApiValidatorClient) beaconBlock(ctx context.Context, slot primiti
 		queryParams.Add("graffiti", hexutil.Encode(graffiti))
 	}
 	queryUrl := apiutil.BuildURL(fmt.Sprintf("/eth/v3/validator/blocks/%d", slot), queryParams)
-	data, header, err := c.jsonRestHandler.GetSSZ(ctx, queryUrl)
+	data, header, err := c.handler.GetSSZ(ctx, queryUrl)
 	if err != nil {
 		return nil, err
 	}

validator/client/beacon-api/get_beacon_block_test.go

@@ -25,8 +25,8 @@ func TestGetBeaconBlock_RequestFailed(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		gomock.Any(),
 	).Return(
@@ -35,7 +35,7 @@ func TestGetBeaconBlock_RequestFailed(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err := validatorClient.beaconBlock(ctx, 1, []byte{1}, []byte{2})
 	assert.ErrorContains(t, "foo error", err)
 }
@@ -149,8 +149,8 @@ func TestGetBeaconBlock_Error(t *testing.T) {
 
 			b, err := json.Marshal(resp)
 			require.NoError(t, err)
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-			jsonRestHandler.EXPECT().GetSSZ(
+			handler := mock.NewMockJsonRestHandler(ctrl)
+			handler.EXPECT().GetSSZ(
 				gomock.Any(),
 				gomock.Any(),
 			).Return(
@@ -159,7 +159,7 @@ func TestGetBeaconBlock_Error(t *testing.T) {
 				nil,
 			).Times(1)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			_, err = validatorClient.beaconBlock(ctx, 1, []byte{1}, []byte{2})
 			assert.ErrorContains(t, testCase.expectedErrorMessage, err)
 		})
@@ -185,8 +185,8 @@ func TestGetBeaconBlock_Phase0Valid(t *testing.T) {
 		Data:    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -195,7 +195,7 @@ func TestGetBeaconBlock_Phase0Valid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -224,8 +224,8 @@ func TestGetBeaconBlock_SSZ_BellatrixValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -238,7 +238,7 @@ func TestGetBeaconBlock_SSZ_BellatrixValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -266,8 +266,8 @@ func TestGetBeaconBlock_SSZ_BlindedBellatrixValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -280,7 +280,7 @@ func TestGetBeaconBlock_SSZ_BlindedBellatrixValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -308,8 +308,8 @@ func TestGetBeaconBlock_SSZ_CapellaValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -322,7 +322,7 @@ func TestGetBeaconBlock_SSZ_CapellaValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -350,8 +350,8 @@ func TestGetBeaconBlock_SSZ_BlindedCapellaValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -364,7 +364,7 @@ func TestGetBeaconBlock_SSZ_BlindedCapellaValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -392,8 +392,8 @@ func TestGetBeaconBlock_SSZ_DenebValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -406,7 +406,7 @@ func TestGetBeaconBlock_SSZ_DenebValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -434,8 +434,8 @@ func TestGetBeaconBlock_SSZ_BlindedDenebValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -448,7 +448,7 @@ func TestGetBeaconBlock_SSZ_BlindedDenebValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -476,8 +476,8 @@ func TestGetBeaconBlock_SSZ_ElectraValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -490,7 +490,7 @@ func TestGetBeaconBlock_SSZ_ElectraValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -518,8 +518,8 @@ func TestGetBeaconBlock_SSZ_BlindedElectraValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -532,7 +532,7 @@ func TestGetBeaconBlock_SSZ_BlindedElectraValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -556,8 +556,8 @@ func TestGetBeaconBlock_SSZ_UnsupportedVersion(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -570,7 +570,7 @@ func TestGetBeaconBlock_SSZ_UnsupportedVersion(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	assert.ErrorContains(t, "version name doesn't map to a known value in the enum", err)
 }
@@ -589,8 +589,8 @@ func TestGetBeaconBlock_SSZ_InvalidBlindedHeader(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -603,7 +603,7 @@ func TestGetBeaconBlock_SSZ_InvalidBlindedHeader(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err = validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	assert.ErrorContains(t, "strconv.ParseBool: parsing \"invalid\": invalid syntax", err)
 }
@@ -622,8 +622,8 @@ func TestGetBeaconBlock_SSZ_InvalidVersionHeader(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -636,7 +636,7 @@ func TestGetBeaconBlock_SSZ_InvalidVersionHeader(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err = validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	assert.ErrorContains(t, "unsupported header version invalid", err)
 }
@@ -651,8 +651,8 @@ func TestGetBeaconBlock_SSZ_GetSSZError(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -661,7 +661,7 @@ func TestGetBeaconBlock_SSZ_GetSSZError(t *testing.T) {
 		errors.New("get ssz error"),
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	_, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	assert.ErrorContains(t, "get ssz error", err)
 }
@@ -680,8 +680,8 @@ func TestGetBeaconBlock_SSZ_Phase0Valid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -694,7 +694,7 @@ func TestGetBeaconBlock_SSZ_Phase0Valid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -722,8 +722,8 @@ func TestGetBeaconBlock_SSZ_AltairValid(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -736,7 +736,7 @@ func TestGetBeaconBlock_SSZ_AltairValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -770,8 +770,8 @@ func TestGetBeaconBlock_AltairValid(t *testing.T) {
 		Data:    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -780,7 +780,7 @@ func TestGetBeaconBlock_AltairValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -814,8 +814,8 @@ func TestGetBeaconBlock_BellatrixValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -824,7 +824,7 @@ func TestGetBeaconBlock_BellatrixValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -859,8 +859,8 @@ func TestGetBeaconBlock_BlindedBellatrixValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -869,7 +869,7 @@ func TestGetBeaconBlock_BlindedBellatrixValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -904,8 +904,8 @@ func TestGetBeaconBlock_CapellaValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -914,7 +914,7 @@ func TestGetBeaconBlock_CapellaValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -949,8 +949,8 @@ func TestGetBeaconBlock_BlindedCapellaValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -959,7 +959,7 @@ func TestGetBeaconBlock_BlindedCapellaValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -994,8 +994,8 @@ func TestGetBeaconBlock_DenebValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -1004,7 +1004,7 @@ func TestGetBeaconBlock_DenebValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -1039,8 +1039,8 @@ func TestGetBeaconBlock_BlindedDenebValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -1049,7 +1049,7 @@ func TestGetBeaconBlock_BlindedDenebValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -1084,8 +1084,8 @@ func TestGetBeaconBlock_ElectraValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -1094,7 +1094,7 @@ func TestGetBeaconBlock_ElectraValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 
@@ -1129,8 +1129,8 @@ func TestGetBeaconBlock_BlindedElectraValid(t *testing.T) {
 		Data:                    bytes,
 	})
 	require.NoError(t, err)
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().GetSSZ(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().GetSSZ(
 		gomock.Any(),
 		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 	).Return(
@@ -1139,7 +1139,7 @@ func TestGetBeaconBlock_BlindedElectraValid(t *testing.T) {
 		nil,
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	beaconBlock, err := validatorClient.beaconBlock(ctx, slot, randaoReveal, graffiti)
 	require.NoError(t, err)
 

validator/client/beacon-api/index_test.go

@@ -41,9 +41,9 @@ func TestIndex_Nominal(t *testing.T) {
 	ctx := t.Context()
 
 	stateValidatorsResponseJson := structs.GetValidatorsResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
-	jsonRestHandler.EXPECT().Post(
+	handler.EXPECT().Post(
 		gomock.Any(),
 		"/eth/v1/beacon/states/head/validators",
 		nil,
@@ -68,7 +68,7 @@ func TestIndex_Nominal(t *testing.T) {
 
 	validatorClient := beaconApiValidatorClient{
 		stateValidatorsProvider: beaconApiStateValidatorsProvider{
-			jsonRestHandler: jsonRestHandler,
+			handler: handler,
 		},
 	}
 
@@ -91,9 +91,9 @@ func TestIndex_UnexistingValidator(t *testing.T) {
 	ctx := t.Context()
 
 	stateValidatorsResponseJson := structs.GetValidatorsResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
-	jsonRestHandler.EXPECT().Post(
+	handler.EXPECT().Post(
 		gomock.Any(),
 		"/eth/v1/beacon/states/head/validators",
 		nil,
@@ -110,7 +110,7 @@ func TestIndex_UnexistingValidator(t *testing.T) {
 
 	validatorClient := beaconApiValidatorClient{
 		stateValidatorsProvider: beaconApiStateValidatorsProvider{
-			jsonRestHandler: jsonRestHandler,
+			handler: handler,
 		},
 	}
 
@@ -133,9 +133,9 @@ func TestIndex_BadIndexError(t *testing.T) {
 	ctx := t.Context()
 
 	stateValidatorsResponseJson := structs.GetValidatorsResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
-	jsonRestHandler.EXPECT().Post(
+	handler.EXPECT().Post(
 		gomock.Any(),
 		"/eth/v1/beacon/states/head/validators",
 		nil,
@@ -160,7 +160,7 @@ func TestIndex_BadIndexError(t *testing.T) {
 
 	validatorClient := beaconApiValidatorClient{
 		stateValidatorsProvider: beaconApiStateValidatorsProvider{
-			jsonRestHandler: jsonRestHandler,
+			handler: handler,
 		},
 	}
 
@@ -182,9 +182,9 @@ func TestIndex_JsonResponseError(t *testing.T) {
 	ctx := t.Context()
 
 	stateValidatorsResponseJson := structs.GetValidatorsResponse{}
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+	handler := mock.NewMockJsonRestHandler(ctrl)
 
-	jsonRestHandler.EXPECT().Post(
+	handler.EXPECT().Post(
 		gomock.Any(),
 		"/eth/v1/beacon/states/head/validators",
 		nil,
@@ -207,7 +207,7 @@ func TestIndex_JsonResponseError(t *testing.T) {
 		queryParams.Add("status", st)
 	}
 
-	jsonRestHandler.EXPECT().Get(
+	handler.EXPECT().Get(
 		gomock.Any(),
 		apiutil.BuildURL("/eth/v1/beacon/states/head/validators", queryParams),
 		&stateValidatorsResponseJson,
@@ -217,7 +217,7 @@ func TestIndex_JsonResponseError(t *testing.T) {
 
 	validatorClient := beaconApiValidatorClient{
 		stateValidatorsProvider: beaconApiStateValidatorsProvider{
-			jsonRestHandler: jsonRestHandler,
+			handler: handler,
 		},
 	}
 

validator/client/beacon-api/mock/json_rest_handler_mock.go

@@ -1,9 +1,9 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: validator/client/beacon-api/rest_handler_client.go
+// Source: api/rest/rest_handler.go
 //
 // Generated by this command:
 //
-//	mockgen -package=mock -source=validator/client/beacon-api/rest_handler_client.go -destination=validator/client/beacon-api/mock/json_rest_handler_mock.go RestHandler
+//	mockgen -package=mock -source=api/rest/rest_handler.go -destination=validator/client/beacon-api/mock/json_rest_handler_mock.go Handler
 //
 
 // Package mock is a generated GoMock package.
@@ -19,36 +19,39 @@ import (
 )
 
 // Backward compatibility aliases for the renamed mock type.
-type MockJsonRestHandler = MockRestHandler
-type MockJsonRestHandlerMockRecorder = MockRestHandlerMockRecorder
+type MockJsonRestHandler = MockHandler
+type MockJsonRestHandlerMockRecorder = MockHandlerMockRecorder
+type MockRestHandler = MockHandler
+type MockRestHandlerMockRecorder = MockHandlerMockRecorder
 
-var NewMockJsonRestHandler = NewMockRestHandler
+var NewMockJsonRestHandler = NewMockHandler
+var NewMockRestHandler = NewMockHandler
 
-// MockRestHandler is a mock of RestHandler interface.
-type MockRestHandler struct {
+// MockHandler is a mock of Handler interface.
+type MockHandler struct {
 	ctrl     *gomock.Controller
-	recorder *MockRestHandlerMockRecorder
+	recorder *MockHandlerMockRecorder
 }
 
-// MockRestHandlerMockRecorder is the mock recorder for MockRestHandler.
-type MockRestHandlerMockRecorder struct {
-	mock *MockRestHandler
+// MockHandlerMockRecorder is the mock recorder for MockHandler.
+type MockHandlerMockRecorder struct {
+	mock *MockHandler
 }
 
-// NewMockRestHandler creates a new mock instance.
-func NewMockRestHandler(ctrl *gomock.Controller) *MockRestHandler {
-	mock := &MockRestHandler{ctrl: ctrl}
-	mock.recorder = &MockRestHandlerMockRecorder{mock}
+// NewMockHandler creates a new mock instance.
+func NewMockHandler(ctrl *gomock.Controller) *MockHandler {
+	mock := &MockHandler{ctrl: ctrl}
+	mock.recorder = &MockHandlerMockRecorder{mock}
 	return mock
 }
 
 // EXPECT returns an object that allows the caller to indicate expected use.
-func (m *MockRestHandler) EXPECT() *MockRestHandlerMockRecorder {
+func (m *MockHandler) EXPECT() *MockHandlerMockRecorder {
 	return m.recorder
 }
 
 // Get mocks base method.
-func (m *MockRestHandler) Get(ctx context.Context, endpoint string, resp any) error {
+func (m *MockHandler) Get(ctx context.Context, endpoint string, resp any) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Get", ctx, endpoint, resp)
 	ret0, _ := ret[0].(error)
@@ -56,13 +59,13 @@ func (m *MockRestHandler) Get(ctx context.Context, endpoint string, resp any) er
 }
 
 // Get indicates an expected call of Get.
-func (mr *MockRestHandlerMockRecorder) Get(ctx, endpoint, resp any) *gomock.Call {
+func (mr *MockHandlerMockRecorder) Get(ctx, endpoint, resp any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Get", reflect.TypeOf((*MockRestHandler)(nil).Get), ctx, endpoint, resp)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Get", reflect.TypeOf((*MockHandler)(nil).Get), ctx, endpoint, resp)
 }
 
 // GetSSZ mocks base method.
-func (m *MockRestHandler) GetSSZ(ctx context.Context, endpoint string) ([]byte, http.Header, error) {
+func (m *MockHandler) GetSSZ(ctx context.Context, endpoint string) ([]byte, http.Header, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetSSZ", ctx, endpoint)
 	ret0, _ := ret[0].([]byte)
@@ -72,13 +75,13 @@ func (m *MockRestHandler) GetSSZ(ctx context.Context, endpoint string) ([]byte,
 }
 
 // GetSSZ indicates an expected call of GetSSZ.
-func (mr *MockRestHandlerMockRecorder) GetSSZ(ctx, endpoint any) *gomock.Call {
+func (mr *MockHandlerMockRecorder) GetSSZ(ctx, endpoint any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetSSZ", reflect.TypeOf((*MockRestHandler)(nil).GetSSZ), ctx, endpoint)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetSSZ", reflect.TypeOf((*MockHandler)(nil).GetSSZ), ctx, endpoint)
 }
 
 // GetStatusCode mocks base method.
-func (m *MockRestHandler) GetStatusCode(ctx context.Context, endpoint string) (int, error) {
+func (m *MockHandler) GetStatusCode(ctx context.Context, endpoint string) (int, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "GetStatusCode", ctx, endpoint)
 	ret0, _ := ret[0].(int)
@@ -87,13 +90,13 @@ func (m *MockRestHandler) GetStatusCode(ctx context.Context, endpoint string) (i
 }
 
 // GetStatusCode indicates an expected call of GetStatusCode.
-func (mr *MockRestHandlerMockRecorder) GetStatusCode(ctx, endpoint any) *gomock.Call {
+func (mr *MockHandlerMockRecorder) GetStatusCode(ctx, endpoint any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetStatusCode", reflect.TypeOf((*MockRestHandler)(nil).GetStatusCode), ctx, endpoint)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "GetStatusCode", reflect.TypeOf((*MockHandler)(nil).GetStatusCode), ctx, endpoint)
 }
 
 // Host mocks base method.
-func (m *MockRestHandler) Host() string {
+func (m *MockHandler) Host() string {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Host")
 	ret0, _ := ret[0].(string)
@@ -101,27 +104,13 @@ func (m *MockRestHandler) Host() string {
 }
 
 // Host indicates an expected call of Host.
-func (mr *MockRestHandlerMockRecorder) Host() *gomock.Call {
+func (mr *MockHandlerMockRecorder) Host() *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Host", reflect.TypeOf((*MockRestHandler)(nil).Host))
-}
-
-// HttpClient mocks base method.
-func (m *MockRestHandler) HttpClient() *http.Client {
-	m.ctrl.T.Helper()
-	ret := m.ctrl.Call(m, "HttpClient")
-	ret0, _ := ret[0].(*http.Client)
-	return ret0
-}
-
-// HttpClient indicates an expected call of HttpClient.
-func (mr *MockRestHandlerMockRecorder) HttpClient() *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "HttpClient", reflect.TypeOf((*MockRestHandler)(nil).HttpClient))
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Host", reflect.TypeOf((*MockHandler)(nil).Host))
 }
 
 // Post mocks base method.
-func (m *MockRestHandler) Post(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer, resp any) error {
+func (m *MockHandler) Post(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer, resp any) error {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "Post", ctx, endpoint, headers, data, resp)
 	ret0, _ := ret[0].(error)
@@ -129,13 +118,13 @@ func (m *MockRestHandler) Post(ctx context.Context, endpoint string, headers map
 }
 
 // Post indicates an expected call of Post.
-func (mr *MockRestHandlerMockRecorder) Post(ctx, endpoint, headers, data, resp any) *gomock.Call {
+func (mr *MockHandlerMockRecorder) Post(ctx, endpoint, headers, data, resp any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Post", reflect.TypeOf((*MockRestHandler)(nil).Post), ctx, endpoint, headers, data, resp)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Post", reflect.TypeOf((*MockHandler)(nil).Post), ctx, endpoint, headers, data, resp)
 }
 
 // PostSSZ mocks base method.
-func (m *MockRestHandler) PostSSZ(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer) ([]byte, http.Header, error) {
+func (m *MockHandler) PostSSZ(ctx context.Context, endpoint string, headers map[string]string, data *bytes.Buffer) ([]byte, http.Header, error) {
 	m.ctrl.T.Helper()
 	ret := m.ctrl.Call(m, "PostSSZ", ctx, endpoint, headers, data)
 	ret0, _ := ret[0].([]byte)
@@ -145,19 +134,7 @@ func (m *MockRestHandler) PostSSZ(ctx context.Context, endpoint string, headers
 }
 
 // PostSSZ indicates an expected call of PostSSZ.
-func (mr *MockRestHandlerMockRecorder) PostSSZ(ctx, endpoint, headers, data any) *gomock.Call {
+func (mr *MockHandlerMockRecorder) PostSSZ(ctx, endpoint, headers, data any) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "PostSSZ", reflect.TypeOf((*MockRestHandler)(nil).PostSSZ), ctx, endpoint, headers, data)
-}
-
-// SetHost mocks base method.
-func (m *MockRestHandler) SetHost(host string) {
-	m.ctrl.T.Helper()
-	m.ctrl.Call(m, "SetHost", host)
-}
-
-// SetHost indicates an expected call of SetHost.
-func (mr *MockRestHandlerMockRecorder) SetHost(host any) *gomock.Call {
-	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "SetHost", reflect.TypeOf((*MockRestHandler)(nil).SetHost), host)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "PostSSZ", reflect.TypeOf((*MockHandler)(nil).PostSSZ), ctx, endpoint, headers, data)
 }

validator/client/beacon-api/prepare_beacon_proposer.go

@@ -26,5 +26,5 @@ func (c *beaconApiValidatorClient) prepareBeaconProposer(ctx context.Context, re
 		return errors.Wrap(err, "failed to marshal recipients")
 	}
 
-	return c.jsonRestHandler.Post(ctx, "/eth/v1/validator/prepare_beacon_proposer", nil, bytes.NewBuffer(marshalledJsonRecipients), nil)
+	return c.handler.Post(ctx, "/eth/v1/validator/prepare_beacon_proposer", nil, bytes.NewBuffer(marshalledJsonRecipients), nil)
 }

validator/client/beacon-api/prepare_beacon_proposer_test.go

@@ -45,8 +45,8 @@ func TestPrepareBeaconProposer_Valid(t *testing.T) {
 	marshalledJsonRecipients, err := json.Marshal(jsonRecipients)
 	require.NoError(t, err)
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		prepareBeaconProposerTestEndpoint,
 		nil,
@@ -78,7 +78,7 @@ func TestPrepareBeaconProposer_Valid(t *testing.T) {
 		},
 	}
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	err = validatorClient.prepareBeaconProposer(ctx, protoRecipients)
 	require.NoError(t, err)
 }
@@ -89,8 +89,8 @@ func TestPrepareBeaconProposer_BadRequest(t *testing.T) {
 
 	ctx := t.Context()
 
-	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
-	jsonRestHandler.EXPECT().Post(
+	handler := mock.NewMockJsonRestHandler(ctrl)
+	handler.EXPECT().Post(
 		gomock.Any(),
 		prepareBeaconProposerTestEndpoint,
 		nil,
@@ -100,7 +100,7 @@ func TestPrepareBeaconProposer_BadRequest(t *testing.T) {
 		errors.New("foo error"),
 	).Times(1)
 
-	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+	validatorClient := &beaconApiValidatorClient{handler: handler}
 	err := validatorClient.prepareBeaconProposer(ctx, nil)
 	assert.ErrorContains(t, "foo error", err)
 }

validator/client/beacon-api/propose_attestation.go

@@ -22,7 +22,7 @@ func (c *beaconApiValidatorClient) proposeAttestation(ctx context.Context, attes
 	}
 
 	headers := map[string]string{"Eth-Consensus-Version": version.String(attestation.Version())}
-	err = c.jsonRestHandler.Post(
+	err = c.handler.Post(
 		ctx,
 		"/eth/v2/beacon/pool/attestations",
 		headers,
@@ -51,7 +51,7 @@ func (c *beaconApiValidatorClient) proposeAttestationElectra(ctx context.Context
 	}
 	consensusVersion := version.String(slots.ToForkVersion(attestation.Data.Slot))
 	headers := map[string]string{"Eth-Consensus-Version": consensusVersion}
-	if err = c.jsonRestHandler.Post(
+	if err = c.handler.Post(
 		ctx,
 		"/eth/v2/beacon/pool/attestations",
 		headers,

validator/client/beacon-api/propose_attestation_test.go

@@ -107,7 +107,7 @@ func TestProposeAttestation(t *testing.T) {
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			ctrl := gomock.NewController(t)
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			var marshalledAttestations []byte
 			if helpers.ValidateNilAttestation(test.attestation) == nil {
@@ -119,7 +119,7 @@ func TestProposeAttestation(t *testing.T) {
 			ctx := t.Context()
 
 			headers := map[string]string{"Eth-Consensus-Version": version.String(test.attestation.Version())}
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				"/eth/v2/beacon/pool/attestations",
 				headers,
@@ -129,7 +129,7 @@ func TestProposeAttestation(t *testing.T) {
 				test.endpointError,
 			).Times(test.endpointCall)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			proposeResponse, err := validatorClient.proposeAttestation(ctx, test.attestation)
 			if test.expectedErrorMessage != "" {
 				require.ErrorContains(t, test.expectedErrorMessage, err)
@@ -254,7 +254,7 @@ func TestProposeAttestationElectra(t *testing.T) {
 	for _, test := range tests {
 		t.Run(test.name, func(t *testing.T) {
 			ctrl := gomock.NewController(t)
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			var marshalledAttestations []byte
 			if helpers.ValidateNilAttestation(test.attestation) == nil {
@@ -268,7 +268,7 @@ func TestProposeAttestationElectra(t *testing.T) {
 			if test.expectedConsensusVersion != "" {
 				headerMatcher = gomock.Eq(map[string]string{"Eth-Consensus-Version": test.expectedConsensusVersion})
 			}
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				"/eth/v2/beacon/pool/attestations",
 				headerMatcher,
@@ -278,7 +278,7 @@ func TestProposeAttestationElectra(t *testing.T) {
 				test.endpointError,
 			).Times(test.endpointCall)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			proposeResponse, err := validatorClient.proposeAttestationElectra(ctx, test.attestation)
 			if test.expectedErrorMessage != "" {
 				require.ErrorContains(t, test.expectedErrorMessage, err)

validator/client/beacon-api/propose_beacon_block.go

@@ -67,7 +67,7 @@ func (c *beaconApiValidatorClient) proposeBeaconBlock(ctx context.Context, in *e
 
 	// Try PostSSZ first with SSZ data
 	if res.marshalledSSZ != nil {
-		_, _, err = c.jsonRestHandler.PostSSZ(ctx, endpoint, headers, bytes.NewBuffer(res.marshalledSSZ))
+		_, _, err = c.handler.PostSSZ(ctx, endpoint, headers, bytes.NewBuffer(res.marshalledSSZ))
 		if err != nil {
 			errJson := &httputil.DefaultJsonError{}
 			// If PostSSZ fails with 406 (Not Acceptable), fall back to JSON
@@ -81,7 +81,7 @@ func (c *beaconApiValidatorClient) proposeBeaconBlock(ctx context.Context, in *e
 					return nil, errors.Wrap(jsonErr, "failed to marshal JSON")
 				}
 				// Reset headers for JSON
-				err = c.jsonRestHandler.Post(ctx, endpoint, headers, bytes.NewBuffer(jsonData), nil)
+				err = c.handler.Post(ctx, endpoint, headers, bytes.NewBuffer(jsonData), nil)
 				// If JSON also fails, return that error
 				if err != nil {
 					return nil, errors.Wrap(err, "failed to submit block via JSON fallback")
@@ -100,7 +100,7 @@ func (c *beaconApiValidatorClient) proposeBeaconBlock(ctx context.Context, in *e
 			return nil, errors.Wrap(jsonErr, "failed to marshal JSON")
 		}
 		// Reset headers for JSON
-		err = c.jsonRestHandler.Post(ctx, endpoint, headers, bytes.NewBuffer(jsonData), nil)
+		err = c.handler.Post(ctx, endpoint, headers, bytes.NewBuffer(jsonData), nil)
 		errJson := &httputil.DefaultJsonError{}
 		if err != nil {
 			if !errors.As(err, &errJson) {

validator/client/beacon-api/propose_beacon_block_test.go

@@ -103,13 +103,13 @@ func TestProposeBeaconBlock_SSZ_Error(t *testing.T) {
 				defer ctrl.Finish()
 
 				ctx := t.Context()
-				jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+				handler := mock.NewMockJsonRestHandler(ctrl)
 
 				// Expect PostSSZ to be called first with SSZ data
 				headers := map[string]string{
 					"Eth-Consensus-Version": testCase.consensusVersion,
 				}
-				jsonRestHandler.EXPECT().PostSSZ(
+				handler.EXPECT().PostSSZ(
 					gomock.Any(),
 					testCase.endpoint,
 					headers,
@@ -120,7 +120,7 @@ func TestProposeBeaconBlock_SSZ_Error(t *testing.T) {
 
 				// No JSON fallback expected for non-406 errors
 
-				validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+				validatorClient := &beaconApiValidatorClient{handler: handler}
 				_, err := validatorClient.proposeBeaconBlock(ctx, testCase.block)
 				assert.ErrorContains(t, testSuite.expectedErrorMessage, err)
 			})
@@ -165,13 +165,13 @@ func TestProposeBeaconBlock_SSZSuccess_NoFallback(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			// Expect PostSSZ to be called and succeed
 			headers := map[string]string{
 				"Eth-Consensus-Version": testCase.consensusVersion,
 			}
-			jsonRestHandler.EXPECT().PostSSZ(
+			handler.EXPECT().PostSSZ(
 				gomock.Any(),
 				testCase.endpoint,
 				headers,
@@ -181,7 +181,7 @@ func TestProposeBeaconBlock_SSZSuccess_NoFallback(t *testing.T) {
 			).Times(1)
 
 			// Post should NOT be called when PostSSZ succeeds
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				gomock.Any(),
 				gomock.Any(),
@@ -189,7 +189,7 @@ func TestProposeBeaconBlock_SSZSuccess_NoFallback(t *testing.T) {
 				gomock.Any(),
 			).Times(0)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			_, err := validatorClient.proposeBeaconBlock(ctx, testCase.block)
 			assert.NoError(t, err)
 		})
@@ -200,7 +200,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("deneb", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blockContents structs.SignedBeaconBlockContentsDeneb
 		err := json.Unmarshal([]byte(rpctesting.DenebBlockContents), &blockContents)
@@ -211,14 +211,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		denebBytes, err := genericSignedBlock.GetDeneb().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blocks",
 			gomock.Any(),
 			bytes.NewBuffer(denebBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -231,7 +231,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("blinded_deneb", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blindedBlock structs.SignedBlindedBeaconBlockDeneb
 		err := json.Unmarshal([]byte(rpctesting.BlindedDenebBlock), &blindedBlock)
@@ -242,14 +242,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		blindedDenebBytes, err := genericSignedBlock.GetBlindedDeneb().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blinded_blocks",
 			gomock.Any(),
 			bytes.NewBuffer(blindedDenebBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -262,7 +262,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("electra", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blockContents structs.SignedBeaconBlockContentsElectra
 		err := json.Unmarshal([]byte(rpctesting.ElectraBlockContents), &blockContents)
@@ -273,14 +273,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		electraBytes, err := genericSignedBlock.GetElectra().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blocks",
 			gomock.Any(),
 			bytes.NewBuffer(electraBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -293,7 +293,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("blinded_electra", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blindedBlock structs.SignedBlindedBeaconBlockElectra
 		err := json.Unmarshal([]byte(rpctesting.BlindedElectraBlock), &blindedBlock)
@@ -304,14 +304,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		blindedElectraBytes, err := genericSignedBlock.GetBlindedElectra().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blinded_blocks",
 			gomock.Any(),
 			bytes.NewBuffer(blindedElectraBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -324,7 +324,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("fulu", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blockContents structs.SignedBeaconBlockContentsFulu
 		err := json.Unmarshal([]byte(rpctesting.FuluBlockContents), &blockContents)
@@ -335,14 +335,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		fuluBytes, err := genericSignedBlock.GetFulu().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blocks",
 			gomock.Any(),
 			bytes.NewBuffer(fuluBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -355,7 +355,7 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 	t.Run("blinded_fulu", func(t *testing.T) {
 		ctrl := gomock.NewController(t)
 		defer ctrl.Finish()
-		jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+		handler := mock.NewMockJsonRestHandler(ctrl)
 
 		var blindedBlock structs.SignedBlindedBeaconBlockFulu
 		err := json.Unmarshal([]byte(rpctesting.BlindedFuluBlock), &blindedBlock)
@@ -366,14 +366,14 @@ func TestProposeBeaconBlock_NewerTypes_SSZMarshal(t *testing.T) {
 		blindedFuluBytes, err := genericSignedBlock.GetBlindedFulu().MarshalSSZ()
 		require.NoError(t, err)
 
-		jsonRestHandler.EXPECT().PostSSZ(
+		handler.EXPECT().PostSSZ(
 			gomock.Any(),
 			"/eth/v2/beacon/blinded_blocks",
 			gomock.Any(),
 			bytes.NewBuffer(blindedFuluBytes),
 		)
 
-		validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+		validatorClient := &beaconApiValidatorClient{handler: handler}
 		proposeResponse, err := validatorClient.proposeBeaconBlock(t.Context(), genericSignedBlock)
 		assert.NoError(t, err)
 		require.NotNil(t, proposeResponse)
@@ -588,10 +588,10 @@ func TestProposeBeaconBlock_SSZFails_406_FallbackToJSON(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			// Expect PostSSZ to be called first and fail
-			jsonRestHandler.EXPECT().PostSSZ(
+			handler.EXPECT().PostSSZ(
 				gomock.Any(),
 				testCase.endpoint,
 				gomock.Any(),
@@ -603,7 +603,7 @@ func TestProposeBeaconBlock_SSZFails_406_FallbackToJSON(t *testing.T) {
 				},
 			).Times(1)
 
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				testCase.endpoint,
 				gomock.Any(),
@@ -613,7 +613,7 @@ func TestProposeBeaconBlock_SSZFails_406_FallbackToJSON(t *testing.T) {
 				nil,
 			).Times(1)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			_, err := validatorClient.proposeBeaconBlock(ctx, testCase.block)
 			assert.NoError(t, err)
 		})
@@ -643,13 +643,13 @@ func TestProposeBeaconBlock_SSZFails_Non406_NoFallback(t *testing.T) {
 			defer ctrl.Finish()
 
 			ctx := t.Context()
-			jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
+			handler := mock.NewMockJsonRestHandler(ctrl)
 
 			// Expect PostSSZ to be called first and fail with non-406 error
 			sszHeaders := map[string]string{
 				"Eth-Consensus-Version": testCase.consensusVersion,
 			}
-			jsonRestHandler.EXPECT().PostSSZ(
+			handler.EXPECT().PostSSZ(
 				gomock.Any(),
 				testCase.endpoint,
 				sszHeaders,
@@ -662,7 +662,7 @@ func TestProposeBeaconBlock_SSZFails_Non406_NoFallback(t *testing.T) {
 			).Times(1)
 
 			// Post should NOT be called for non-406 errors
-			jsonRestHandler.EXPECT().Post(
+			handler.EXPECT().Post(
 				gomock.Any(),
 				gomock.Any(),
 				gomock.Any(),
@@ -670,7 +670,7 @@ func TestProposeBeaconBlock_SSZFails_Non406_NoFallback(t *testing.T) {
 				gomock.Any(),
 			).Times(0)
 
-			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
+			validatorClient := &beaconApiValidatorClient{handler: handler}
 			_, err := validatorClient.proposeBeaconBlock(ctx, testCase.block)
 			require.ErrorContains(t, "Internal server error", err)
 		})