Fix compute field roots with hasher

Add wait until PTC duty

.github/workflows/changelog.yml

@@ -1,33 +0,0 @@
-name: CI
-
-on:
-  pull_request:
-    branches:
-      - develop
-
-jobs:
-  changed_files:
-    runs-on: ubuntu-latest 
-    name: Check CHANGELOG.md
-    steps:
-      - uses: actions/checkout@v4
-      - name: changelog modified
-        id: changelog-modified
-        uses: tj-actions/changed-files@v45
-        with:
-          files: CHANGELOG.md
-
-      - name: List all changed files
-        env:
-          ALL_CHANGED_FILES: ${{ steps.changelog-modified.outputs.all_changed_files }}
-        run: |
-          if [[ ${ALL_CHANGED_FILES[*]} =~ (^|[[:space:]])"CHANGELOG.md"($|[[:space:]]) ]];
-          then
-            echo "CHANGELOG.md was modified.";
-            exit 0;
-          else
-            echo "CHANGELOG.md was not modified.";
-            echo "Please see CHANGELOG.md and follow the instructions to add your changes to that file."
-            echo "In some rare scenarios, a changelog entry is not required and this CI check can be ignored."
-            exit 1;
-          fi

.policy.yml

@@ -26,7 +26,6 @@ approval_rules:
       only_changed_files:
         paths:
           - "*pb.go"
-          - "*pb.gw.go"
           - "*.bazel"
     options:
       ignore_commits_by:
@@ -69,7 +68,6 @@ approval_rules:
       changed_files:
         ignore:
           - "*pb.go"
-          - "*pb.gw.go"
           - "*.bazel"
     options:
       ignore_commits_by:

BUILD.bazel

@@ -55,13 +55,6 @@ alias(
     visibility = ["//visibility:public"],
 )
 
-# Protobuf gRPC gateway compiler
-alias(
-    name = "grpc_gateway_proto_compiler",
-    actual = "@com_github_grpc_ecosystem_grpc_gateway_v2//protoc-gen-grpc-gateway:go_gen_grpc_gateway",
-    visibility = ["//visibility:public"],
-)
-
 gometalinter(
     name = "gometalinter",
     config = "//:.gometalinter.json",

WORKSPACE

@@ -227,7 +227,7 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.5.0-alpha.5"
+consensus_spec_version = "v1.5.0-alpha.6"
 
 bls_test_version = "v0.1.1"
 
@@ -243,7 +243,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-R9vG5HEL5eGMOAmbkKfJ2jfelNqL5V0xBUPiXOiGM6U=",
+    integrity = "sha256-M7u/Ot/Vzorww+dFbHp0cxLyM2mezJjijCzq+LY3uvs=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )
 
@@ -259,7 +259,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-AEIiEOlf1XuxoRMCsN+kgJMo4LrS05+biTA1p/7Ro00=",
+    integrity = "sha256-deOSeLRsmHXvkRp8n2bs3HXdkGUJWWqu8KFM/QABbZg=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )
 
@@ -275,7 +275,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-LH/Xr20yrJRYnbpjRGupMWTIOWt3cpxZJWXgThwVDsk=",
+    integrity = "sha256-Zz7YCf6XVf57nzSEGq9ToflJFHM0lAGwhd18l9Rf3hA=",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )
 
@@ -290,7 +290,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    integrity = "sha256-mlytz4MPjKh0DwV7FMiAtnRbJw9B6o78/x66/vmnYc8=",
+    integrity = "sha256-BoXckDxXnDcEmAjg/dQgf/tLiJsb6CT0aZvmWHFijrY=",
     strip_prefix = "consensus-specs-" + consensus_spec_version[1:],
     url = "https://github.com/ethereum/consensus-specs/archive/refs/tags/%s.tar.gz" % consensus_spec_version,
 )

api/client/builder/client.go

@@ -146,7 +146,7 @@ func (c *Client) do(ctx context.Context, method string, path string, body io.Rea
 
 	u := c.baseURL.ResolveReference(&url.URL{Path: path})
 
-	span.AddAttributes(trace.StringAttribute("url", u.String()),
+	span.SetAttributes(trace.StringAttribute("url", u.String()),
 		trace.StringAttribute("method", method))
 
 	req, err := http.NewRequestWithContext(ctx, method, u.String(), body)
@@ -259,7 +259,7 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValidatorRegistrationV1) error {
 	ctx, span := trace.StartSpan(ctx, "builder.client.RegisterValidator")
 	defer span.End()
-	span.AddAttributes(trace.Int64Attribute("num_reqs", int64(len(svr))))
+	span.SetAttributes(trace.Int64Attribute("num_reqs", int64(len(svr))))
 
 	if len(svr) == 0 {
 		err := errors.Wrap(errMalformedRequest, "empty validator registration list")
@@ -278,7 +278,11 @@ func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValid
 	}
 
 	_, err = c.do(ctx, http.MethodPost, postRegisterValidatorPath, bytes.NewBuffer(body))
-	return err
+	if err != nil {
+		return err
+	}
+	log.WithField("num_registrations", len(svr)).Info("successfully registered validator(s) on builder")
+	return nil
 }
 
 var errResponseVersionMismatch = errors.New("builder API response uses a different version than requested in " + api.VersionHeader + " header")

api/gateway/BUILD.bazel

@@ -1,43 +0,0 @@
-load("@prysm//tools/go:def.bzl", "go_library", "go_test")
-
-go_library(
-    name = "go_default_library",
-    srcs = [
-        "gateway.go",
-        "log.go",
-        "modifiers.go",
-        "options.go",
-    ],
-    importpath = "github.com/prysmaticlabs/prysm/v5/api/gateway",
-    visibility = [
-        "//beacon-chain:__subpackages__",
-        "//validator:__subpackages__",
-    ],
-    deps = [
-        "//api/server/middleware:go_default_library",
-        "//runtime:go_default_library",
-        "@com_github_gorilla_mux//:go_default_library",
-        "@com_github_grpc_ecosystem_grpc_gateway_v2//runtime:go_default_library",
-        "@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//connectivity:go_default_library",
-        "@org_golang_google_grpc//credentials:go_default_library",
-        "@org_golang_google_grpc//credentials/insecure:go_default_library",
-        "@org_golang_google_protobuf//proto:go_default_library",
-    ],
-)
-
-go_test(
-    name = "go_default_test",
-    srcs = ["gateway_test.go"],
-    embed = [":go_default_library"],
-    deps = [
-        "//cmd/beacon-chain/flags:go_default_library",
-        "//testing/assert:go_default_library",
-        "//testing/require:go_default_library",
-        "@com_github_gorilla_mux//:go_default_library",
-        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
-        "@com_github_urfave_cli_v2//:go_default_library",
-    ],
-)

api/gateway/gateway.go

@@ -1,212 +0,0 @@
-// Package gateway defines a grpc-gateway server that serves HTTP-JSON traffic and acts a proxy between HTTP and gRPC.
-package gateway
-
-import (
-	"context"
-	"fmt"
-	"net"
-	"net/http"
-	"time"
-
-	"github.com/gorilla/mux"
-	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
-	"github.com/pkg/errors"
-	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
-	"github.com/prysmaticlabs/prysm/v5/runtime"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/connectivity"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/credentials/insecure"
-)
-
-var _ runtime.Service = (*Gateway)(nil)
-
-// PbMux serves grpc-gateway requests for selected patterns using registered protobuf handlers.
-type PbMux struct {
-	Registrations []PbHandlerRegistration // Protobuf registrations to be registered in Mux.
-	Patterns      []string                // URL patterns that will be handled by Mux.
-	Mux           *gwruntime.ServeMux     // The router that will be used for grpc-gateway requests.
-}
-
-// PbHandlerRegistration is a function that registers a protobuf handler.
-type PbHandlerRegistration func(context.Context, *gwruntime.ServeMux, *grpc.ClientConn) error
-
-// MuxHandler is a function that implements the mux handler functionality.
-type MuxHandler func(
-	h http.HandlerFunc,
-	w http.ResponseWriter,
-	req *http.Request,
-)
-
-// Config parameters for setting up the gateway service.
-type config struct {
-	maxCallRecvMsgSize uint64
-	remoteCert         string
-	gatewayAddr        string
-	remoteAddr         string
-	allowedOrigins     []string
-	muxHandler         MuxHandler
-	pbHandlers         []*PbMux
-	router             *mux.Router
-	timeout            time.Duration
-}
-
-// Gateway is the gRPC gateway to serve HTTP JSON traffic as a proxy and forward it to the gRPC server.
-type Gateway struct {
-	cfg          *config
-	conn         *grpc.ClientConn
-	server       *http.Server
-	cancel       context.CancelFunc
-	ctx          context.Context
-	startFailure error
-}
-
-// New returns a new instance of the Gateway.
-func New(ctx context.Context, opts ...Option) (*Gateway, error) {
-	g := &Gateway{
-		ctx: ctx,
-		cfg: &config{},
-	}
-	for _, opt := range opts {
-		if err := opt(g); err != nil {
-			return nil, err
-		}
-	}
-	if g.cfg.router == nil {
-		g.cfg.router = mux.NewRouter()
-	}
-	return g, nil
-}
-
-// Start the gateway service.
-func (g *Gateway) Start() {
-	ctx, cancel := context.WithCancel(g.ctx)
-	g.cancel = cancel
-
-	conn, err := g.dial(ctx, "tcp", g.cfg.remoteAddr)
-	if err != nil {
-		log.WithError(err).Error("Failed to connect to gRPC server")
-		g.startFailure = err
-		return
-	}
-	g.conn = conn
-
-	for _, h := range g.cfg.pbHandlers {
-		for _, r := range h.Registrations {
-			if err := r(ctx, h.Mux, g.conn); err != nil {
-				log.WithError(err).Error("Failed to register handler")
-				g.startFailure = err
-				return
-			}
-		}
-		for _, p := range h.Patterns {
-			g.cfg.router.PathPrefix(p).Handler(h.Mux)
-		}
-	}
-
-	corsMux := middleware.CorsHandler(g.cfg.allowedOrigins).Middleware(g.cfg.router)
-
-	if g.cfg.muxHandler != nil {
-		g.cfg.router.PathPrefix("/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			g.cfg.muxHandler(corsMux.ServeHTTP, w, r)
-		})
-	}
-
-	g.server = &http.Server{
-		Addr:              g.cfg.gatewayAddr,
-		Handler:           corsMux,
-		ReadHeaderTimeout: time.Second,
-	}
-
-	go func() {
-		log.WithField("address", g.cfg.gatewayAddr).Info("Starting gRPC gateway")
-		if err := g.server.ListenAndServe(); err != http.ErrServerClosed {
-			log.WithError(err).Error("Failed to start gRPC gateway")
-			g.startFailure = err
-			return
-		}
-	}()
-}
-
-// Status of grpc gateway. Returns an error if this service is unhealthy.
-func (g *Gateway) Status() error {
-	if g.startFailure != nil {
-		return g.startFailure
-	}
-	if s := g.conn.GetState(); s != connectivity.Ready {
-		return fmt.Errorf("grpc server is %s", s)
-	}
-	return nil
-}
-
-// Stop the gateway with a graceful shutdown.
-func (g *Gateway) Stop() error {
-	if g.server != nil {
-		shutdownCtx, shutdownCancel := context.WithTimeout(g.ctx, 2*time.Second)
-		defer shutdownCancel()
-		if err := g.server.Shutdown(shutdownCtx); err != nil {
-			if errors.Is(err, context.DeadlineExceeded) {
-				log.Warn("Existing connections terminated")
-			} else {
-				log.WithError(err).Error("Failed to gracefully shut down server")
-			}
-		}
-	}
-	if g.cancel != nil {
-		g.cancel()
-	}
-	return nil
-}
-
-// dial the gRPC server.
-func (g *Gateway) dial(ctx context.Context, network, addr string) (*grpc.ClientConn, error) {
-	switch network {
-	case "tcp":
-		return g.dialTCP(ctx, addr)
-	case "unix":
-		return g.dialUnix(ctx, addr)
-	default:
-		return nil, fmt.Errorf("unsupported network type %q", network)
-	}
-}
-
-// dialTCP creates a client connection via TCP.
-// "addr" must be a valid TCP address with a port number.
-func (g *Gateway) dialTCP(ctx context.Context, addr string) (*grpc.ClientConn, error) {
-	var security grpc.DialOption
-	if len(g.cfg.remoteCert) > 0 {
-		creds, err := credentials.NewClientTLSFromFile(g.cfg.remoteCert, "")
-		if err != nil {
-			return nil, err
-		}
-		security = grpc.WithTransportCredentials(creds)
-	} else {
-		// Use insecure credentials when there's no remote cert provided.
-		security = grpc.WithTransportCredentials(insecure.NewCredentials())
-	}
-	opts := []grpc.DialOption{
-		security,
-		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(g.cfg.maxCallRecvMsgSize))),
-	}
-	return grpc.DialContext(ctx, addr, opts...)
-}
-
-// dialUnix creates a client connection via a unix domain socket.
-// "addr" must be a valid path to the socket.
-func (g *Gateway) dialUnix(ctx context.Context, addr string) (*grpc.ClientConn, error) {
-	d := func(addr string, timeout time.Duration) (net.Conn, error) {
-		return net.DialTimeout("unix", addr, timeout)
-	}
-	f := func(ctx context.Context, addr string) (net.Conn, error) {
-		if deadline, ok := ctx.Deadline(); ok {
-			return d(addr, time.Until(deadline))
-		}
-		return d(addr, 0)
-	}
-	opts := []grpc.DialOption{
-		grpc.WithTransportCredentials(insecure.NewCredentials()),
-		grpc.WithContextDialer(f),
-		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(int(g.cfg.maxCallRecvMsgSize))),
-	}
-	return grpc.DialContext(ctx, addr, opts...)
-}

api/gateway/gateway_test.go

@@ -1,107 +0,0 @@
-package gateway
-
-import (
-	"context"
-	"flag"
-	"fmt"
-	"net/http"
-	"net/http/httptest"
-	"net/url"
-	"testing"
-
-	"github.com/gorilla/mux"
-	"github.com/prysmaticlabs/prysm/v5/cmd/beacon-chain/flags"
-	"github.com/prysmaticlabs/prysm/v5/testing/assert"
-	"github.com/prysmaticlabs/prysm/v5/testing/require"
-	logTest "github.com/sirupsen/logrus/hooks/test"
-	"github.com/urfave/cli/v2"
-)
-
-func TestGateway_Customized(t *testing.T) {
-	r := mux.NewRouter()
-	cert := "cert"
-	origins := []string{"origin"}
-	size := uint64(100)
-
-	opts := []Option{
-		WithRouter(r),
-		WithRemoteCert(cert),
-		WithAllowedOrigins(origins),
-		WithMaxCallRecvMsgSize(size),
-		WithMuxHandler(func(
-			_ http.HandlerFunc,
-			_ http.ResponseWriter,
-			_ *http.Request,
-		) {
-		}),
-	}
-
-	g, err := New(context.Background(), opts...)
-	require.NoError(t, err)
-
-	assert.Equal(t, r, g.cfg.router)
-	assert.Equal(t, cert, g.cfg.remoteCert)
-	require.Equal(t, 1, len(g.cfg.allowedOrigins))
-	assert.Equal(t, origins[0], g.cfg.allowedOrigins[0])
-	assert.Equal(t, size, g.cfg.maxCallRecvMsgSize)
-}
-
-func TestGateway_StartStop(t *testing.T) {
-	hook := logTest.NewGlobal()
-
-	app := cli.App{}
-	set := flag.NewFlagSet("test", 0)
-	ctx := cli.NewContext(&app, set, nil)
-
-	gatewayPort := ctx.Int(flags.GRPCGatewayPort.Name)
-	gatewayHost := ctx.String(flags.GRPCGatewayHost.Name)
-	rpcHost := ctx.String(flags.RPCHost.Name)
-	selfAddress := fmt.Sprintf("%s:%d", rpcHost, ctx.Int(flags.RPCPort.Name))
-	gatewayAddress := fmt.Sprintf("%s:%d", gatewayHost, gatewayPort)
-
-	opts := []Option{
-		WithGatewayAddr(gatewayAddress),
-		WithRemoteAddr(selfAddress),
-		WithMuxHandler(func(
-			_ http.HandlerFunc,
-			_ http.ResponseWriter,
-			_ *http.Request,
-		) {
-		}),
-	}
-
-	g, err := New(context.Background(), opts...)
-	require.NoError(t, err)
-
-	g.Start()
-	go func() {
-		require.LogsContain(t, hook, "Starting gRPC gateway")
-		require.LogsDoNotContain(t, hook, "Starting API middleware")
-	}()
-	err = g.Stop()
-	require.NoError(t, err)
-}
-
-func TestGateway_NilHandler_NotFoundHandlerRegistered(t *testing.T) {
-	app := cli.App{}
-	set := flag.NewFlagSet("test", 0)
-	ctx := cli.NewContext(&app, set, nil)
-
-	gatewayPort := ctx.Int(flags.GRPCGatewayPort.Name)
-	gatewayHost := ctx.String(flags.GRPCGatewayHost.Name)
-	rpcHost := ctx.String(flags.RPCHost.Name)
-	selfAddress := fmt.Sprintf("%s:%d", rpcHost, ctx.Int(flags.RPCPort.Name))
-	gatewayAddress := fmt.Sprintf("%s:%d", gatewayHost, gatewayPort)
-
-	opts := []Option{
-		WithGatewayAddr(gatewayAddress),
-		WithRemoteAddr(selfAddress),
-	}
-
-	g, err := New(context.Background(), opts...)
-	require.NoError(t, err)
-
-	writer := httptest.NewRecorder()
-	g.cfg.router.ServeHTTP(writer, &http.Request{Method: "GET", Host: "localhost", URL: &url.URL{Path: "/foo"}})
-	assert.Equal(t, http.StatusNotFound, writer.Code)
-}

api/gateway/log.go

@@ -1,5 +0,0 @@
-package gateway
-
-import "github.com/sirupsen/logrus"
-
-var log = logrus.WithField("prefix", "gateway")

api/gateway/modifiers.go

@@ -1,30 +0,0 @@
-package gateway
-
-import (
-	"context"
-	"net/http"
-	"strconv"
-
-	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
-	"google.golang.org/protobuf/proto"
-)
-
-func HttpResponseModifier(ctx context.Context, w http.ResponseWriter, _ proto.Message) error {
-	md, ok := gwruntime.ServerMetadataFromContext(ctx)
-	if !ok {
-		return nil
-	}
-	// set http status code
-	if vals := md.HeaderMD.Get("x-http-code"); len(vals) > 0 {
-		code, err := strconv.Atoi(vals[0])
-		if err != nil {
-			return err
-		}
-		// delete the headers to not expose any grpc-metadata in http response
-		delete(md.HeaderMD, "x-http-code")
-		delete(w.Header(), "Grpc-Metadata-X-Http-Code")
-		w.WriteHeader(code)
-	}
-
-	return nil
-}

api/gateway/options.go

@@ -1,79 +0,0 @@
-package gateway
-
-import (
-	"time"
-
-	"github.com/gorilla/mux"
-	gwruntime "github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
-)
-
-type Option func(g *Gateway) error
-
-func WithPbHandlers(handlers []*PbMux) Option {
-	return func(g *Gateway) error {
-		g.cfg.pbHandlers = handlers
-		return nil
-	}
-}
-
-func WithMuxHandler(m MuxHandler) Option {
-	return func(g *Gateway) error {
-		g.cfg.muxHandler = m
-		return nil
-	}
-}
-
-func WithGatewayAddr(addr string) Option {
-	return func(g *Gateway) error {
-		g.cfg.gatewayAddr = addr
-		return nil
-	}
-}
-
-func WithRemoteAddr(addr string) Option {
-	return func(g *Gateway) error {
-		g.cfg.remoteAddr = addr
-		return nil
-	}
-}
-
-// WithRouter allows adding a custom mux router to the gateway.
-func WithRouter(r *mux.Router) Option {
-	return func(g *Gateway) error {
-		g.cfg.router = r
-		return nil
-	}
-}
-
-// WithAllowedOrigins allows adding a set of allowed origins to the gateway.
-func WithAllowedOrigins(origins []string) Option {
-	return func(g *Gateway) error {
-		g.cfg.allowedOrigins = origins
-		return nil
-	}
-}
-
-// WithRemoteCert allows adding a custom certificate to the gateway,
-func WithRemoteCert(cert string) Option {
-	return func(g *Gateway) error {
-		g.cfg.remoteCert = cert
-		return nil
-	}
-}
-
-// WithMaxCallRecvMsgSize allows specifying the maximum allowed gRPC message size.
-func WithMaxCallRecvMsgSize(size uint64) Option {
-	return func(g *Gateway) error {
-		g.cfg.maxCallRecvMsgSize = size
-		return nil
-	}
-}
-
-// WithTimeout allows changing the timeout value for API calls.
-func WithTimeout(seconds uint64) Option {
-	return func(g *Gateway) error {
-		g.cfg.timeout = time.Second * time.Duration(seconds)
-		gwruntime.DefaultContextTimeout = time.Second * time.Duration(seconds)
-		return nil
-	}
-}

api/grpc/BUILD.bazel

@@ -22,9 +22,7 @@ go_test(
     deps = [
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
-        "@com_github_grpc_ecosystem_grpc_gateway_v2//runtime:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
-        "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_grpc//metadata:go_default_library",
     ],
 )

api/grpc/grpcutils.go

@@ -2,8 +2,6 @@ package grpc
 
 import (
 	"context"
-	"encoding/json"
-	"fmt"
 	"strings"
 	"time"
 
@@ -81,16 +79,3 @@ func AppendHeaders(parent context.Context, headers []string) context.Context {
 	}
 	return parent
 }
-
-// AppendCustomErrorHeader sets a CustomErrorMetadataKey gRPC header on the passed in context,
-// using the passed in error data as the header's value. The data is serialized as JSON.
-func AppendCustomErrorHeader(ctx context.Context, errorData interface{}) error {
-	j, err := json.Marshal(errorData)
-	if err != nil {
-		return fmt.Errorf("could not marshal error data into JSON: %w", err)
-	}
-	if err := grpc.SetHeader(ctx, metadata.Pairs(CustomErrorMetadataKey, string(j))); err != nil {
-		return fmt.Errorf("could not set custom error header: %w", err)
-	}
-	return nil
-}

api/grpc/grpcutils_test.go

@@ -2,15 +2,11 @@ package grpc
 
 import (
 	"context"
-	"encoding/json"
-	"strings"
 	"testing"
 
-	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
 	"github.com/prysmaticlabs/prysm/v5/testing/assert"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 	logTest "github.com/sirupsen/logrus/hooks/test"
-	"google.golang.org/grpc"
 	"google.golang.org/grpc/metadata"
 )
 
@@ -62,17 +58,3 @@ func TestAppendHeaders(t *testing.T) {
 		assert.Equal(t, "value=1", md.Get("first")[0])
 	})
 }
-
-func TestAppendCustomErrorHeader(t *testing.T) {
-	stream := &runtime.ServerTransportStream{}
-	ctx := grpc.NewContextWithServerTransportStream(context.Background(), stream)
-	data := &customErrorData{Message: "foo"}
-	require.NoError(t, AppendCustomErrorHeader(ctx, data))
-	// The stream used in test setup sets the metadata key in lowercase.
-	value, ok := stream.Header()[strings.ToLower(CustomErrorMetadataKey)]
-	require.Equal(t, true, ok, "Failed to retrieve custom error metadata value")
-	expected, err := json.Marshal(data)
-	require.NoError(t, err)
-	assert.Equal(t, string(expected), value[0])
-
-}

api/server/httprest/BUILD.bazel

@@ -0,0 +1,31 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "log.go",
+        "options.go",
+        "server.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/v5/api/server/httprest",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api/server/middleware:go_default_library",
+        "//runtime:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+        "@com_github_sirupsen_logrus//:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["server_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//cmd/beacon-chain/flags:go_default_library",
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
+        "@com_github_sirupsen_logrus//hooks/test:go_default_library",
+        "@com_github_urfave_cli_v2//:go_default_library",
+    ],
+)

api/server/httprest/log.go

@@ -0,0 +1,5 @@
+package httprest
+
+import "github.com/sirupsen/logrus"
+
+var log = logrus.WithField("prefix", "httprest")

api/server/httprest/options.go

@@ -0,0 +1,44 @@
+package httprest
+
+import (
+	"time"
+
+	"net/http"
+
+	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
+)
+
+// Option is a http rest server functional parameter type.
+type Option func(g *Server) error
+
+// WithMiddlewares sets the list of middlewares to be applied on routes.
+func WithMiddlewares(mw []middleware.Middleware) Option {
+	return func(g *Server) error {
+		g.cfg.middlewares = mw
+		return nil
+	}
+}
+
+// WithHTTPAddr sets the full address ( host and port ) of the server.
+func WithHTTPAddr(addr string) Option {
+	return func(g *Server) error {
+		g.cfg.httpAddr = addr
+		return nil
+	}
+}
+
+// WithRouter sets the internal router of the server, this is required.
+func WithRouter(r *http.ServeMux) Option {
+	return func(g *Server) error {
+		g.cfg.router = r
+		return nil
+	}
+}
+
+// WithTimeout allows changing the timeout value for API calls.
+func WithTimeout(duration time.Duration) Option {
+	return func(g *Server) error {
+		g.cfg.timeout = duration
+		return nil
+	}
+}

api/server/httprest/server.go

@@ -0,0 +1,101 @@
+package httprest
+
+import (
+	"context"
+	"net/http"
+	"time"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/api/server/middleware"
+	"github.com/prysmaticlabs/prysm/v5/runtime"
+)
+
+var _ runtime.Service = (*Server)(nil)
+
+// Config parameters for setting up the http-rest service.
+type config struct {
+	httpAddr    string
+	middlewares []middleware.Middleware
+	router      http.Handler
+	timeout     time.Duration
+}
+
+// Server serves HTTP traffic.
+type Server struct {
+	cfg          *config
+	server       *http.Server
+	cancel       context.CancelFunc
+	ctx          context.Context
+	startFailure error
+}
+
+// New returns a new instance of the Server.
+func New(ctx context.Context, opts ...Option) (*Server, error) {
+	g := &Server{
+		ctx: ctx,
+		cfg: &config{},
+	}
+	for _, opt := range opts {
+		if err := opt(g); err != nil {
+			return nil, err
+		}
+	}
+	if g.cfg.router == nil {
+		return nil, errors.New("router option not configured")
+	}
+	var handler http.Handler
+	defaultReadHeaderTimeout := time.Second
+	handler = middleware.MiddlewareChain(g.cfg.router, g.cfg.middlewares)
+	if g.cfg.timeout > 0*time.Second {
+		defaultReadHeaderTimeout = g.cfg.timeout
+		handler = http.TimeoutHandler(handler, g.cfg.timeout, "request timed out")
+	}
+	g.server = &http.Server{
+		Addr:              g.cfg.httpAddr,
+		Handler:           handler,
+		ReadHeaderTimeout: defaultReadHeaderTimeout,
+	}
+
+	return g, nil
+}
+
+// Start the http rest service.
+func (g *Server) Start() {
+	g.ctx, g.cancel = context.WithCancel(g.ctx)
+
+	go func() {
+		log.WithField("address", g.cfg.httpAddr).Info("Starting HTTP server")
+		if err := g.server.ListenAndServe(); err != http.ErrServerClosed {
+			log.WithError(err).Error("Failed to start HTTP server")
+			g.startFailure = err
+			return
+		}
+	}()
+}
+
+// Status of the HTTP server. Returns an error if this service is unhealthy.
+func (g *Server) Status() error {
+	if g.startFailure != nil {
+		return g.startFailure
+	}
+	return nil
+}
+
+// Stop the HTTP server with a graceful shutdown.
+func (g *Server) Stop() error {
+	if g.server != nil {
+		shutdownCtx, shutdownCancel := context.WithTimeout(g.ctx, 2*time.Second)
+		defer shutdownCancel()
+		if err := g.server.Shutdown(shutdownCtx); err != nil {
+			if errors.Is(err, context.DeadlineExceeded) {
+				log.Warn("Existing connections terminated")
+			} else {
+				log.WithError(err).Error("Failed to gracefully shut down server")
+			}
+		}
+	}
+	if g.cancel != nil {
+		g.cancel()
+	}
+	return nil
+}

api/server/httprest/server_test.go

@@ -0,0 +1,71 @@
+package httprest
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"net"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/cmd/beacon-chain/flags"
+	"github.com/prysmaticlabs/prysm/v5/testing/assert"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	logTest "github.com/sirupsen/logrus/hooks/test"
+	"github.com/urfave/cli/v2"
+)
+
+func TestServer_StartStop(t *testing.T) {
+	hook := logTest.NewGlobal()
+
+	app := cli.App{}
+	set := flag.NewFlagSet("test", 0)
+	ctx := cli.NewContext(&app, set, nil)
+
+	port := ctx.Int(flags.HTTPServerPort.Name)
+	portStr := fmt.Sprintf("%d", port) // Convert port to string
+	host := ctx.String(flags.HTTPServerHost.Name)
+	address := net.JoinHostPort(host, portStr)
+	handler := http.NewServeMux()
+	opts := []Option{
+		WithHTTPAddr(address),
+		WithRouter(handler),
+	}
+
+	g, err := New(context.Background(), opts...)
+	require.NoError(t, err)
+
+	g.Start()
+	go func() {
+		require.LogsContain(t, hook, "Starting HTTP server")
+		require.LogsDoNotContain(t, hook, "Starting API middleware")
+	}()
+	err = g.Stop()
+	require.NoError(t, err)
+}
+
+func TestServer_NilHandler_NotFoundHandlerRegistered(t *testing.T) {
+	app := cli.App{}
+	set := flag.NewFlagSet("test", 0)
+	ctx := cli.NewContext(&app, set, nil)
+
+	handler := http.NewServeMux()
+	port := ctx.Int(flags.HTTPServerPort.Name)
+	portStr := fmt.Sprintf("%d", port) // Convert port to string
+	host := ctx.String(flags.HTTPServerHost.Name)
+	address := net.JoinHostPort(host, portStr)
+
+	opts := []Option{
+		WithHTTPAddr(address),
+		WithRouter(handler),
+	}
+
+	g, err := New(context.Background(), opts...)
+	require.NoError(t, err)
+
+	writer := httptest.NewRecorder()
+	g.cfg.router.ServeHTTP(writer, &http.Request{Method: "GET", Host: "localhost", URL: &url.URL{Path: "/foo"}})
+	assert.Equal(t, http.StatusNotFound, writer.Code)
+}

api/server/middleware/BUILD.bazel

@@ -8,10 +8,7 @@ go_library(
     ],
     importpath = "github.com/prysmaticlabs/prysm/v5/api/server/middleware",
     visibility = ["//visibility:public"],
-    deps = [
-        "@com_github_gorilla_mux//:go_default_library",
-        "@com_github_rs_cors//:go_default_library",
-    ],
+    deps = ["@com_github_rs_cors//:go_default_library"],
 )
 
 go_test(

api/server/middleware/middleware.go

@@ -5,10 +5,11 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/gorilla/mux"
 	"github.com/rs/cors"
 )
 
+type Middleware func(http.Handler) http.Handler
+
 // NormalizeQueryValuesHandler normalizes an input query of "key=value1,value2,value3" to "key=value1&key=value2&key=value3"
 func NormalizeQueryValuesHandler(next http.Handler) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -21,7 +22,7 @@ func NormalizeQueryValuesHandler(next http.Handler) http.Handler {
 }
 
 // CorsHandler sets the cors settings on api endpoints
-func CorsHandler(allowOrigins []string) mux.MiddlewareFunc {
+func CorsHandler(allowOrigins []string) Middleware {
 	c := cors.New(cors.Options{
 		AllowedOrigins:   allowOrigins,
 		AllowedMethods:   []string{http.MethodPost, http.MethodGet, http.MethodDelete, http.MethodOptions},
@@ -34,7 +35,7 @@ func CorsHandler(allowOrigins []string) mux.MiddlewareFunc {
 }
 
 // ContentTypeHandler checks request for the appropriate media types otherwise returning a http.StatusUnsupportedMediaType error
-func ContentTypeHandler(acceptedMediaTypes []string) mux.MiddlewareFunc {
+func ContentTypeHandler(acceptedMediaTypes []string) Middleware {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			// skip the GET request
@@ -67,7 +68,7 @@ func ContentTypeHandler(acceptedMediaTypes []string) mux.MiddlewareFunc {
 }
 
 // AcceptHeaderHandler checks if the client's response preference is handled
-func AcceptHeaderHandler(serverAcceptedTypes []string) mux.MiddlewareFunc {
+func AcceptHeaderHandler(serverAcceptedTypes []string) Middleware {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			acceptHeader := r.Header.Get("Accept")
@@ -110,3 +111,15 @@ func AcceptHeaderHandler(serverAcceptedTypes []string) mux.MiddlewareFunc {
 		})
 	}
 }
+
+func MiddlewareChain(h http.Handler, mw []Middleware) http.Handler {
+	if len(mw) < 1 {
+		return h
+	}
+
+	wrapped := h
+	for i := len(mw) - 1; i >= 0; i-- {
+		wrapped = mw[i](wrapped)
+	}
+	return wrapped
+}

api/server/structs/BUILD.bazel

@@ -6,6 +6,7 @@ go_library(
         "block.go",
         "conversions.go",
         "conversions_block.go",
+        "conversions_lightclient.go",
         "conversions_state.go",
         "endpoints_beacon.go",
         "endpoints_blob.go",
@@ -33,6 +34,9 @@ go_library(
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
         "//proto/engine/v1:go_default_library",
+        "//proto/eth/v1:go_default_library",
+        "//proto/eth/v2:go_default_library",
+        "//proto/migration:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",

api/server/structs/block.go

@@ -365,6 +365,7 @@ type BeaconBlockBodyElectra struct {
 	ExecutionPayload      *ExecutionPayloadElectra      `json:"execution_payload"`
 	BLSToExecutionChanges []*SignedBLSToExecutionChange `json:"bls_to_execution_changes"`
 	BlobKzgCommitments    []string                      `json:"blob_kzg_commitments"`
+	ExecutionRequests     *ExecutionRequests            `json:"execution_requests"`
 }
 
 type BlindedBeaconBlockElectra struct {
@@ -403,6 +404,7 @@ type BlindedBeaconBlockBodyElectra struct {
 	ExecutionPayloadHeader *ExecutionPayloadHeaderElectra `json:"execution_payload_header"`
 	BLSToExecutionChanges  []*SignedBLSToExecutionChange  `json:"bls_to_execution_changes"`
 	BlobKzgCommitments     []string                       `json:"blob_kzg_commitments"`
+	ExecutionRequests      *ExecutionRequests             `json:"execution_requests"`
 }
 
 type SignedBeaconBlockHeaderContainer struct {
@@ -514,6 +516,8 @@ type ExecutionPayloadDeneb struct {
 	ExcessBlobGas string        `json:"excess_blob_gas"`
 }
 
+type ExecutionPayloadElectra = ExecutionPayloadDeneb
+
 type ExecutionPayloadHeaderDeneb struct {
 	ParentHash       string `json:"parent_hash"`
 	FeeRecipient     string `json:"fee_recipient"`
@@ -534,48 +538,10 @@ type ExecutionPayloadHeaderDeneb struct {
 	ExcessBlobGas    string `json:"excess_blob_gas"`
 }
 
-type ExecutionPayloadElectra struct {
-	ParentHash            string                  `json:"parent_hash"`
-	FeeRecipient          string                  `json:"fee_recipient"`
-	StateRoot             string                  `json:"state_root"`
-	ReceiptsRoot          string                  `json:"receipts_root"`
-	LogsBloom             string                  `json:"logs_bloom"`
-	PrevRandao            string                  `json:"prev_randao"`
-	BlockNumber           string                  `json:"block_number"`
-	GasLimit              string                  `json:"gas_limit"`
-	GasUsed               string                  `json:"gas_used"`
-	Timestamp             string                  `json:"timestamp"`
-	ExtraData             string                  `json:"extra_data"`
-	BaseFeePerGas         string                  `json:"base_fee_per_gas"`
-	BlockHash             string                  `json:"block_hash"`
-	Transactions          []string                `json:"transactions"`
-	Withdrawals           []*Withdrawal           `json:"withdrawals"`
-	BlobGasUsed           string                  `json:"blob_gas_used"`
-	ExcessBlobGas         string                  `json:"excess_blob_gas"`
-	DepositRequests       []*DepositRequest       `json:"deposit_requests"`
-	WithdrawalRequests    []*WithdrawalRequest    `json:"withdrawal_requests"`
-	ConsolidationRequests []*ConsolidationRequest `json:"consolidation_requests"`
-}
+type ExecutionPayloadHeaderElectra = ExecutionPayloadHeaderDeneb
 
-type ExecutionPayloadHeaderElectra struct {
-	ParentHash                string `json:"parent_hash"`
-	FeeRecipient              string `json:"fee_recipient"`
-	StateRoot                 string `json:"state_root"`
-	ReceiptsRoot              string `json:"receipts_root"`
-	LogsBloom                 string `json:"logs_bloom"`
-	PrevRandao                string `json:"prev_randao"`
-	BlockNumber               string `json:"block_number"`
-	GasLimit                  string `json:"gas_limit"`
-	GasUsed                   string `json:"gas_used"`
-	Timestamp                 string `json:"timestamp"`
-	ExtraData                 string `json:"extra_data"`
-	BaseFeePerGas             string `json:"base_fee_per_gas"`
-	BlockHash                 string `json:"block_hash"`
-	TransactionsRoot          string `json:"transactions_root"`
-	WithdrawalsRoot           string `json:"withdrawals_root"`
-	BlobGasUsed               string `json:"blob_gas_used"`
-	ExcessBlobGas             string `json:"excess_blob_gas"`
-	DepositRequestsRoot       string `json:"deposit_requests_root"`
-	WithdrawalRequestsRoot    string `json:"withdrawal_requests_root"`
-	ConsolidationRequestsRoot string `json:"consolidation_requests_root"`
+type ExecutionRequests struct {
+	Deposits       []*DepositRequest       `json:"deposits"`
+	Withdrawals    []*WithdrawalRequest    `json:"withdrawals"`
+	Consolidations []*ConsolidationRequest `json:"consolidations"`
 }

api/server/structs/conversions_block.go

@@ -2088,27 +2088,31 @@ func (b *BeaconBlockElectra) ToConsensus() (*eth.BeaconBlockElectra, error) {
 		return nil, server.NewDecodeError(err, "Body.ExecutionPayload.ExcessBlobGas")
 	}
 
-	depositRequests := make([]*enginev1.DepositRequest, len(b.Body.ExecutionPayload.DepositRequests))
-	for i, d := range b.Body.ExecutionPayload.DepositRequests {
+	if b.Body.ExecutionRequests == nil {
+		return nil, server.NewDecodeError(errors.New("nil execution requests"), "Body.ExequtionRequests")
+	}
+
+	depositRequests := make([]*enginev1.DepositRequest, len(b.Body.ExecutionRequests.Deposits))
+	for i, d := range b.Body.ExecutionRequests.Deposits {
 		depositRequests[i], err = d.ToConsensus()
 		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionPayload.DepositRequests[%d]", i))
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Deposits[%d]", i))
 		}
 	}
 
-	withdrawalRequests := make([]*enginev1.WithdrawalRequest, len(b.Body.ExecutionPayload.WithdrawalRequests))
-	for i, w := range b.Body.ExecutionPayload.WithdrawalRequests {
+	withdrawalRequests := make([]*enginev1.WithdrawalRequest, len(b.Body.ExecutionRequests.Withdrawals))
+	for i, w := range b.Body.ExecutionRequests.Withdrawals {
 		withdrawalRequests[i], err = w.ToConsensus()
 		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionPayload.WithdrawalRequests[%d]", i))
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Withdrawals[%d]", i))
 		}
 	}
 
-	consolidationRequests := make([]*enginev1.ConsolidationRequest, len(b.Body.ExecutionPayload.ConsolidationRequests))
-	for i, c := range b.Body.ExecutionPayload.ConsolidationRequests {
+	consolidationRequests := make([]*enginev1.ConsolidationRequest, len(b.Body.ExecutionRequests.Consolidations))
+	for i, c := range b.Body.ExecutionRequests.Consolidations {
 		consolidationRequests[i], err = c.ToConsensus()
 		if err != nil {
-			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionPayload.ConsolidationRequests[%d]", i))
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Consolidations[%d]", i))
 		}
 	}
 
@@ -2151,29 +2155,31 @@ func (b *BeaconBlockElectra) ToConsensus() (*eth.BeaconBlockElectra, error) {
 				SyncCommitteeSignature: syncCommitteeSig,
 			},
 			ExecutionPayload: &enginev1.ExecutionPayloadElectra{
-				ParentHash:            payloadParentHash,
-				FeeRecipient:          payloadFeeRecipient,
-				StateRoot:             payloadStateRoot,
-				ReceiptsRoot:          payloadReceiptsRoot,
-				LogsBloom:             payloadLogsBloom,
-				PrevRandao:            payloadPrevRandao,
-				BlockNumber:           payloadBlockNumber,
-				GasLimit:              payloadGasLimit,
-				GasUsed:               payloadGasUsed,
-				Timestamp:             payloadTimestamp,
-				ExtraData:             payloadExtraData,
-				BaseFeePerGas:         payloadBaseFeePerGas,
-				BlockHash:             payloadBlockHash,
-				Transactions:          txs,
-				Withdrawals:           withdrawals,
-				BlobGasUsed:           payloadBlobGasUsed,
-				ExcessBlobGas:         payloadExcessBlobGas,
-				DepositRequests:       depositRequests,
-				WithdrawalRequests:    withdrawalRequests,
-				ConsolidationRequests: consolidationRequests,
+				ParentHash:    payloadParentHash,
+				FeeRecipient:  payloadFeeRecipient,
+				StateRoot:     payloadStateRoot,
+				ReceiptsRoot:  payloadReceiptsRoot,
+				LogsBloom:     payloadLogsBloom,
+				PrevRandao:    payloadPrevRandao,
+				BlockNumber:   payloadBlockNumber,
+				GasLimit:      payloadGasLimit,
+				GasUsed:       payloadGasUsed,
+				Timestamp:     payloadTimestamp,
+				ExtraData:     payloadExtraData,
+				BaseFeePerGas: payloadBaseFeePerGas,
+				BlockHash:     payloadBlockHash,
+				Transactions:  txs,
+				Withdrawals:   withdrawals,
+				BlobGasUsed:   payloadBlobGasUsed,
+				ExcessBlobGas: payloadExcessBlobGas,
 			},
 			BlsToExecutionChanges: blsChanges,
 			BlobKzgCommitments:    blobKzgCommitments,
+			ExecutionRequests: &enginev1.ExecutionRequests{
+				Deposits:       depositRequests,
+				Withdrawals:    withdrawalRequests,
+				Consolidations: consolidationRequests,
+			},
 		},
 	}, nil
 }
@@ -2383,17 +2389,31 @@ func (b *BlindedBeaconBlockElectra) ToConsensus() (*eth.BlindedBeaconBlockElectr
 	if err != nil {
 		return nil, server.NewDecodeError(err, "Body.ExecutionPayload.ExcessBlobGas")
 	}
-	payloadDepositRequestsRoot, err := bytesutil.DecodeHexWithLength(b.Body.ExecutionPayloadHeader.DepositRequestsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Body.ExecutionPayloadHeader.DepositRequestsRoot")
+	if b.Body.ExecutionRequests == nil {
+		return nil, server.NewDecodeError(errors.New("nil execution requests"), "Body.ExecutionRequests")
 	}
-	payloadWithdrawalRequestsRoot, err := bytesutil.DecodeHexWithLength(b.Body.ExecutionPayloadHeader.WithdrawalRequestsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Body.ExecutionPayloadHeader.WithdrawalRequestsRoot")
+	depositRequests := make([]*enginev1.DepositRequest, len(b.Body.ExecutionRequests.Deposits))
+	for i, d := range b.Body.ExecutionRequests.Deposits {
+		depositRequests[i], err = d.ToConsensus()
+		if err != nil {
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Deposits[%d]", i))
+		}
 	}
-	payloadConsolidationRequestsRoot, err := bytesutil.DecodeHexWithLength(b.Body.ExecutionPayloadHeader.ConsolidationRequestsRoot, fieldparams.RootLength)
-	if err != nil {
-		return nil, server.NewDecodeError(err, "Body.ExecutionPayloadHeader.ConsolidationRequestsRoot")
+
+	withdrawalRequests := make([]*enginev1.WithdrawalRequest, len(b.Body.ExecutionRequests.Withdrawals))
+	for i, w := range b.Body.ExecutionRequests.Withdrawals {
+		withdrawalRequests[i], err = w.ToConsensus()
+		if err != nil {
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Withdrawals[%d]", i))
+		}
+	}
+
+	consolidationRequests := make([]*enginev1.ConsolidationRequest, len(b.Body.ExecutionRequests.Consolidations))
+	for i, c := range b.Body.ExecutionRequests.Consolidations {
+		consolidationRequests[i], err = c.ToConsensus()
+		if err != nil {
+			return nil, server.NewDecodeError(err, fmt.Sprintf("Body.ExecutionRequests.Consolidations[%d]", i))
+		}
 	}
 
 	blsChanges, err := SignedBLSChangesToConsensus(b.Body.BLSToExecutionChanges)
@@ -2436,29 +2456,31 @@ func (b *BlindedBeaconBlockElectra) ToConsensus() (*eth.BlindedBeaconBlockElectr
 				SyncCommitteeSignature: syncCommitteeSig,
 			},
 			ExecutionPayloadHeader: &enginev1.ExecutionPayloadHeaderElectra{
-				ParentHash:                payloadParentHash,
-				FeeRecipient:              payloadFeeRecipient,
-				StateRoot:                 payloadStateRoot,
-				ReceiptsRoot:              payloadReceiptsRoot,
-				LogsBloom:                 payloadLogsBloom,
-				PrevRandao:                payloadPrevRandao,
-				BlockNumber:               payloadBlockNumber,
-				GasLimit:                  payloadGasLimit,
-				GasUsed:                   payloadGasUsed,
-				Timestamp:                 payloadTimestamp,
-				ExtraData:                 payloadExtraData,
-				BaseFeePerGas:             payloadBaseFeePerGas,
-				BlockHash:                 payloadBlockHash,
-				TransactionsRoot:          payloadTxsRoot,
-				WithdrawalsRoot:           payloadWithdrawalsRoot,
-				BlobGasUsed:               payloadBlobGasUsed,
-				ExcessBlobGas:             payloadExcessBlobGas,
-				DepositRequestsRoot:       payloadDepositRequestsRoot,
-				WithdrawalRequestsRoot:    payloadWithdrawalRequestsRoot,
-				ConsolidationRequestsRoot: payloadConsolidationRequestsRoot,
+				ParentHash:       payloadParentHash,
+				FeeRecipient:     payloadFeeRecipient,
+				StateRoot:        payloadStateRoot,
+				ReceiptsRoot:     payloadReceiptsRoot,
+				LogsBloom:        payloadLogsBloom,
+				PrevRandao:       payloadPrevRandao,
+				BlockNumber:      payloadBlockNumber,
+				GasLimit:         payloadGasLimit,
+				GasUsed:          payloadGasUsed,
+				Timestamp:        payloadTimestamp,
+				ExtraData:        payloadExtraData,
+				BaseFeePerGas:    payloadBaseFeePerGas,
+				BlockHash:        payloadBlockHash,
+				TransactionsRoot: payloadTxsRoot,
+				WithdrawalsRoot:  payloadWithdrawalsRoot,
+				BlobGasUsed:      payloadBlobGasUsed,
+				ExcessBlobGas:    payloadExcessBlobGas,
 			},
 			BlsToExecutionChanges: blsChanges,
 			BlobKzgCommitments:    blobKzgCommitments,
+			ExecutionRequests: &enginev1.ExecutionRequests{
+				Deposits:       depositRequests,
+				Withdrawals:    withdrawalRequests,
+				Consolidations: consolidationRequests,
+			},
 		},
 	}, nil
 }
@@ -2963,10 +2985,19 @@ func BlindedBeaconBlockElectraFromConsensus(b *eth.BlindedBeaconBlockElectra) (*
 			ExecutionPayloadHeader: payload,
 			BLSToExecutionChanges:  SignedBLSChangesFromConsensus(b.Body.BlsToExecutionChanges),
 			BlobKzgCommitments:     blobKzgCommitments,
+			ExecutionRequests:      ExecutionRequestsFromConsensus(b.Body.ExecutionRequests),
 		},
 	}, nil
 }
 
+func ExecutionRequestsFromConsensus(er *enginev1.ExecutionRequests) *ExecutionRequests {
+	return &ExecutionRequests{
+		Deposits:       DepositRequestsFromConsensus(er.Deposits),
+		Withdrawals:    WithdrawalRequestsFromConsensus(er.Withdrawals),
+		Consolidations: ConsolidationRequestsFromConsensus(er.Consolidations),
+	}
+}
+
 func SignedBlindedBeaconBlockElectraFromConsensus(b *eth.SignedBlindedBeaconBlockElectra) (*SignedBlindedBeaconBlockElectra, error) {
 	block, err := BlindedBeaconBlockElectraFromConsensus(b.Message)
 	if err != nil {
@@ -3009,6 +3040,7 @@ func BeaconBlockElectraFromConsensus(b *eth.BeaconBlockElectra) (*BeaconBlockEle
 			ExecutionPayload:      payload,
 			BLSToExecutionChanges: SignedBLSChangesFromConsensus(b.Body.BlsToExecutionChanges),
 			BlobKzgCommitments:    blobKzgCommitments,
+			ExecutionRequests:     ExecutionRequestsFromConsensus(b.Body.ExecutionRequests),
 		},
 	}, nil
 }
@@ -3112,39 +3144,7 @@ func ExecutionPayloadDenebFromConsensus(payload *enginev1.ExecutionPayloadDeneb)
 	}, nil
 }
 
-func ExecutionPayloadElectraFromConsensus(payload *enginev1.ExecutionPayloadElectra) (*ExecutionPayloadElectra, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-	transactions := make([]string, len(payload.Transactions))
-	for i, tx := range payload.Transactions {
-		transactions[i] = hexutil.Encode(tx)
-	}
-
-	return &ExecutionPayloadElectra{
-		ParentHash:            hexutil.Encode(payload.ParentHash),
-		FeeRecipient:          hexutil.Encode(payload.FeeRecipient),
-		StateRoot:             hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:          hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:             hexutil.Encode(payload.LogsBloom),
-		PrevRandao:            hexutil.Encode(payload.PrevRandao),
-		BlockNumber:           fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:              fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:               fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:             fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:             hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas:         baseFeePerGas,
-		BlockHash:             hexutil.Encode(payload.BlockHash),
-		Transactions:          transactions,
-		Withdrawals:           WithdrawalsFromConsensus(payload.Withdrawals),
-		BlobGasUsed:           fmt.Sprintf("%d", payload.BlobGasUsed),
-		ExcessBlobGas:         fmt.Sprintf("%d", payload.ExcessBlobGas),
-		DepositRequests:       DepositRequestsFromConsensus(payload.DepositRequests),
-		WithdrawalRequests:    WithdrawalRequestsFromConsensus(payload.WithdrawalRequests),
-		ConsolidationRequests: ConsolidationRequestsFromConsensus(payload.ConsolidationRequests),
-	}, nil
-}
+var ExecutionPayloadElectraFromConsensus = ExecutionPayloadDenebFromConsensus
 
 func ExecutionPayloadHeaderFromConsensus(payload *enginev1.ExecutionPayloadHeader) (*ExecutionPayloadHeader, error) {
 	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
@@ -3222,32 +3222,4 @@ func ExecutionPayloadHeaderDenebFromConsensus(payload *enginev1.ExecutionPayload
 	}, nil
 }
 
-func ExecutionPayloadHeaderElectraFromConsensus(payload *enginev1.ExecutionPayloadHeaderElectra) (*ExecutionPayloadHeaderElectra, error) {
-	baseFeePerGas, err := sszBytesToUint256String(payload.BaseFeePerGas)
-	if err != nil {
-		return nil, err
-	}
-
-	return &ExecutionPayloadHeaderElectra{
-		ParentHash:                hexutil.Encode(payload.ParentHash),
-		FeeRecipient:              hexutil.Encode(payload.FeeRecipient),
-		StateRoot:                 hexutil.Encode(payload.StateRoot),
-		ReceiptsRoot:              hexutil.Encode(payload.ReceiptsRoot),
-		LogsBloom:                 hexutil.Encode(payload.LogsBloom),
-		PrevRandao:                hexutil.Encode(payload.PrevRandao),
-		BlockNumber:               fmt.Sprintf("%d", payload.BlockNumber),
-		GasLimit:                  fmt.Sprintf("%d", payload.GasLimit),
-		GasUsed:                   fmt.Sprintf("%d", payload.GasUsed),
-		Timestamp:                 fmt.Sprintf("%d", payload.Timestamp),
-		ExtraData:                 hexutil.Encode(payload.ExtraData),
-		BaseFeePerGas:             baseFeePerGas,
-		BlockHash:                 hexutil.Encode(payload.BlockHash),
-		TransactionsRoot:          hexutil.Encode(payload.TransactionsRoot),
-		WithdrawalsRoot:           hexutil.Encode(payload.WithdrawalsRoot),
-		BlobGasUsed:               fmt.Sprintf("%d", payload.BlobGasUsed),
-		ExcessBlobGas:             fmt.Sprintf("%d", payload.ExcessBlobGas),
-		DepositRequestsRoot:       hexutil.Encode(payload.DepositRequestsRoot),
-		WithdrawalRequestsRoot:    hexutil.Encode(payload.WithdrawalRequestsRoot),
-		ConsolidationRequestsRoot: hexutil.Encode(payload.ConsolidationRequestsRoot),
-	}, nil
-}
+var ExecutionPayloadHeaderElectraFromConsensus = ExecutionPayloadHeaderDenebFromConsensus

api/server/structs/conversions_lightclient.go

@@ -0,0 +1,122 @@
+package structs
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
+	v1 "github.com/prysmaticlabs/prysm/v5/proto/eth/v1"
+	v2 "github.com/prysmaticlabs/prysm/v5/proto/eth/v2"
+	"github.com/prysmaticlabs/prysm/v5/proto/migration"
+)
+
+func LightClientUpdateFromConsensus(update *v2.LightClientUpdate) (*LightClientUpdate, error) {
+	attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal attested light client header")
+	}
+	finalizedHeader, err := lightClientHeaderContainerToJSON(update.FinalizedHeader)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal finalized light client header")
+	}
+
+	return &LightClientUpdate{
+		AttestedHeader:          attestedHeader,
+		NextSyncCommittee:       SyncCommitteeFromConsensus(migration.V2SyncCommitteeToV1Alpha1(update.NextSyncCommittee)),
+		NextSyncCommitteeBranch: branchToJSON(update.NextSyncCommitteeBranch),
+		FinalizedHeader:         finalizedHeader,
+		FinalityBranch:          branchToJSON(update.FinalityBranch),
+		SyncAggregate:           syncAggregateToJSON(update.SyncAggregate),
+		SignatureSlot:           strconv.FormatUint(uint64(update.SignatureSlot), 10),
+	}, nil
+}
+
+func LightClientFinalityUpdateFromConsensus(update *v2.LightClientFinalityUpdate) (*LightClientFinalityUpdate, error) {
+	attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal attested light client header")
+	}
+	finalizedHeader, err := lightClientHeaderContainerToJSON(update.FinalizedHeader)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal finalized light client header")
+	}
+
+	return &LightClientFinalityUpdate{
+		AttestedHeader:  attestedHeader,
+		FinalizedHeader: finalizedHeader,
+		FinalityBranch:  branchToJSON(update.FinalityBranch),
+		SyncAggregate:   syncAggregateToJSON(update.SyncAggregate),
+		SignatureSlot:   strconv.FormatUint(uint64(update.SignatureSlot), 10),
+	}, nil
+}
+
+func LightClientOptimisticUpdateFromConsensus(update *v2.LightClientOptimisticUpdate) (*LightClientOptimisticUpdate, error) {
+	attestedHeader, err := lightClientHeaderContainerToJSON(update.AttestedHeader)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not marshal attested light client header")
+	}
+
+	return &LightClientOptimisticUpdate{
+		AttestedHeader: attestedHeader,
+		SyncAggregate:  syncAggregateToJSON(update.SyncAggregate),
+		SignatureSlot:  strconv.FormatUint(uint64(update.SignatureSlot), 10),
+	}, nil
+}
+
+func branchToJSON(branchBytes [][]byte) []string {
+	if branchBytes == nil {
+		return nil
+	}
+	branch := make([]string, len(branchBytes))
+	for i, root := range branchBytes {
+		branch[i] = hexutil.Encode(root)
+	}
+	return branch
+}
+
+func syncAggregateToJSON(input *v1.SyncAggregate) *SyncAggregate {
+	return &SyncAggregate{
+		SyncCommitteeBits:      hexutil.Encode(input.SyncCommitteeBits),
+		SyncCommitteeSignature: hexutil.Encode(input.SyncCommitteeSignature),
+	}
+}
+
+func lightClientHeaderContainerToJSON(container *v2.LightClientHeaderContainer) (json.RawMessage, error) {
+	beacon, err := container.GetBeacon()
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get beacon block header")
+	}
+
+	var header any
+
+	switch t := (container.Header).(type) {
+	case *v2.LightClientHeaderContainer_HeaderAltair:
+		header = &LightClientHeader{Beacon: BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon))}
+	case *v2.LightClientHeaderContainer_HeaderCapella:
+		execution, err := ExecutionPayloadHeaderCapellaFromConsensus(t.HeaderCapella.Execution)
+		if err != nil {
+			return nil, err
+		}
+		header = &LightClientHeaderCapella{
+			Beacon:          BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon)),
+			Execution:       execution,
+			ExecutionBranch: branchToJSON(t.HeaderCapella.ExecutionBranch),
+		}
+	case *v2.LightClientHeaderContainer_HeaderDeneb:
+		execution, err := ExecutionPayloadHeaderDenebFromConsensus(t.HeaderDeneb.Execution)
+		if err != nil {
+			return nil, err
+		}
+		header = &LightClientHeaderDeneb{
+			Beacon:          BeaconBlockHeaderFromConsensus(migration.V1HeaderToV1Alpha1(beacon)),
+			Execution:       execution,
+			ExecutionBranch: branchToJSON(t.HeaderDeneb.ExecutionBranch),
+		}
+	default:
+		return nil, fmt.Errorf("unsupported header type %T", t)
+	}
+
+	return json.Marshal(header)
+}

api/server/structs/conversions_state.go

@@ -674,7 +674,7 @@ func BeaconStateElectraFromConsensus(st beaconState.BeaconState) (*BeaconStateEl
 	if err != nil {
 		return nil, err
 	}
-	srcPayload, ok := execData.Proto().(*enginev1.ExecutionPayloadHeaderElectra)
+	srcPayload, ok := execData.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
 	if !ok {
 		return nil, errPayloadHeaderNotFound
 	}

api/server/structs/endpoints_events.go

@@ -96,21 +96,7 @@ type LightClientFinalityUpdateEvent struct {
 	Data    *LightClientFinalityUpdate `json:"data"`
 }
 
-type LightClientFinalityUpdate struct {
-	AttestedHeader  *BeaconBlockHeader `json:"attested_header"`
-	FinalizedHeader *BeaconBlockHeader `json:"finalized_header"`
-	FinalityBranch  []string           `json:"finality_branch"`
-	SyncAggregate   *SyncAggregate     `json:"sync_aggregate"`
-	SignatureSlot   string             `json:"signature_slot"`
-}
-
 type LightClientOptimisticUpdateEvent struct {
 	Version string                       `json:"version"`
 	Data    *LightClientOptimisticUpdate `json:"data"`
 }
-
-type LightClientOptimisticUpdate struct {
-	AttestedHeader *BeaconBlockHeader `json:"attested_header"`
-	SyncAggregate  *SyncAggregate     `json:"sync_aggregate"`
-	SignatureSlot  string             `json:"signature_slot"`
-}

api/server/structs/endpoints_lightclient.go

@@ -1,35 +1,73 @@
 package structs
 
+import "encoding/json"
+
 type LightClientHeader struct {
 	Beacon *BeaconBlockHeader `json:"beacon"`
 }
 
+type LightClientHeaderCapella struct {
+	Beacon          *BeaconBlockHeader             `json:"beacon"`
+	Execution       *ExecutionPayloadHeaderCapella `json:"execution"`
+	ExecutionBranch []string                       `json:"execution_branch"`
+}
+
+type LightClientHeaderDeneb struct {
+	Beacon          *BeaconBlockHeader           `json:"beacon"`
+	Execution       *ExecutionPayloadHeaderDeneb `json:"execution"`
+	ExecutionBranch []string                     `json:"execution_branch"`
+}
+
+type LightClientBootstrap struct {
+	Header                     json.RawMessage `json:"header"`
+	CurrentSyncCommittee       *SyncCommittee  `json:"current_sync_committee"`
+	CurrentSyncCommitteeBranch []string        `json:"current_sync_committee_branch"`
+}
+
+type LightClientUpdate struct {
+	AttestedHeader          json.RawMessage `json:"attested_header"`
+	NextSyncCommittee       *SyncCommittee  `json:"next_sync_committee,omitempty"`
+	FinalizedHeader         json.RawMessage `json:"finalized_header,omitempty"`
+	SyncAggregate           *SyncAggregate  `json:"sync_aggregate"`
+	NextSyncCommitteeBranch []string        `json:"next_sync_committee_branch,omitempty"`
+	FinalityBranch          []string        `json:"finality_branch,omitempty"`
+	SignatureSlot           string          `json:"signature_slot"`
+}
+
+type LightClientFinalityUpdate struct {
+	AttestedHeader  json.RawMessage `json:"attested_header"`
+	FinalizedHeader json.RawMessage `json:"finalized_header"`
+	FinalityBranch  []string        `json:"finality_branch"`
+	SyncAggregate   *SyncAggregate  `json:"sync_aggregate"`
+	SignatureSlot   string          `json:"signature_slot"`
+}
+
+type LightClientOptimisticUpdate struct {
+	AttestedHeader json.RawMessage `json:"attested_header"`
+	SyncAggregate  *SyncAggregate  `json:"sync_aggregate"`
+	SignatureSlot  string          `json:"signature_slot"`
+}
+
 type LightClientBootstrapResponse struct {
 	Version string                `json:"version"`
 	Data    *LightClientBootstrap `json:"data"`
 }
 
-type LightClientBootstrap struct {
-	Header                     *LightClientHeader `json:"header"`
-	CurrentSyncCommittee       *SyncCommittee     `json:"current_sync_committee"`
-	CurrentSyncCommitteeBranch []string           `json:"current_sync_committee_branch"`
-}
-
-type LightClientUpdate struct {
-	AttestedHeader          *BeaconBlockHeader `json:"attested_header"`
-	NextSyncCommittee       *SyncCommittee     `json:"next_sync_committee,omitempty"`
-	FinalizedHeader         *BeaconBlockHeader `json:"finalized_header,omitempty"`
-	SyncAggregate           *SyncAggregate     `json:"sync_aggregate"`
-	NextSyncCommitteeBranch []string           `json:"next_sync_committee_branch,omitempty"`
-	FinalityBranch          []string           `json:"finality_branch,omitempty"`
-	SignatureSlot           string             `json:"signature_slot"`
-}
-
-type LightClientUpdateWithVersion struct {
+type LightClientUpdateResponse struct {
 	Version string             `json:"version"`
 	Data    *LightClientUpdate `json:"data"`
 }
 
-type LightClientUpdatesByRangeResponse struct {
-	Updates []*LightClientUpdateWithVersion `json:"updates"`
+type LightClientFinalityUpdateResponse struct {
+	Version string                     `json:"version"`
+	Data    *LightClientFinalityUpdate `json:"data"`
+}
+
+type LightClientOptimisticUpdateResponse struct {
+	Version string                       `json:"version"`
+	Data    *LightClientOptimisticUpdate `json:"data"`
+}
+
+type LightClientUpdatesByRangeResponse struct {
+	Updates []*LightClientUpdateResponse `json:"updates"`
 }

async/event/BUILD.bazel

@@ -8,22 +8,20 @@ go_library(
     ],
     importpath = "github.com/prysmaticlabs/prysm/v5/async/event",
     visibility = ["//visibility:public"],
-    deps = ["//time/mclock:go_default_library"],
+    deps = [
+        "//time/mclock:go_default_library",
+        "@com_github_ethereum_go_ethereum//event:go_default_library",
+    ],
 )
 
 go_test(
     name = "go_default_test",
     size = "small",
     srcs = [
-        "example_feed_test.go",
         "example_scope_test.go",
         "example_subscription_test.go",
-        "feed_test.go",
         "subscription_test.go",
     ],
     embed = [":go_default_library"],
-    deps = [
-        "//testing/assert:go_default_library",
-        "//testing/require:go_default_library",
-    ],
+    deps = ["//testing/require:go_default_library"],
 )

async/event/example_feed_test.go

@@ -1,73 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package event_test
-
-import (
-	"fmt"
-
-	"github.com/prysmaticlabs/prysm/v5/async/event"
-)
-
-func ExampleFeed_acknowledgedEvents() {
-	// This example shows how the return value of Send can be used for request/reply
-	// interaction between event consumers and producers.
-	var feed event.Feed
-	type ackedEvent struct {
-		i   int
-		ack chan<- struct{}
-	}
-
-	// Consumers wait for events on the feed and acknowledge processing.
-	done := make(chan struct{})
-	defer close(done)
-	for i := 0; i < 3; i++ {
-		ch := make(chan ackedEvent, 100)
-		sub := feed.Subscribe(ch)
-		go func() {
-			defer sub.Unsubscribe()
-			for {
-				select {
-				case ev := <-ch:
-					fmt.Println(ev.i) // "process" the event
-					ev.ack <- struct{}{}
-				case <-done:
-					return
-				}
-			}
-		}()
-	}
-
-	// The producer sends values of type ackedEvent with increasing values of i.
-	// It waits for all consumers to acknowledge before sending the next event.
-	for i := 0; i < 3; i++ {
-		acksignal := make(chan struct{})
-		n := feed.Send(ackedEvent{i, acksignal})
-		for ack := 0; ack < n; ack++ {
-			<-acksignal
-		}
-	}
-	// Output:
-	// 0
-	// 0
-	// 0
-	// 1
-	// 1
-	// 1
-	// 2
-	// 2
-	// 2
-}

async/event/feed.go

@@ -14,241 +14,11 @@
 // You should have received a copy of the GNU Lesser General Public License
 // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
 
-// Package event contains an event feed implementation for process communication.
 package event
 
 import (
-	"errors"
-	"reflect"
-	"slices"
-	"sync"
+	geth_event "github.com/ethereum/go-ethereum/event"
 )
 
-var errBadChannel = errors.New("event: Subscribe argument does not have sendable channel type")
-
-// Feed implements one-to-many subscriptions where the carrier of events is a channel.
-// Values sent to a Feed are delivered to all subscribed channels simultaneously.
-//
-// Feeds can only be used with a single type. The type is determined by the first Send or
-// Subscribe operation. Subsequent calls to these methods panic if the type does not
-// match.
-//
-// The zero value is ready to use.
-type Feed struct {
-	once      sync.Once        // ensures that init only runs once
-	sendLock  chan struct{}    // sendLock has a one-element buffer and is empty when held.It protects sendCases.
-	removeSub chan interface{} // interrupts Send
-	sendCases caseList         // the active set of select cases used by Send
-
-	// The inbox holds newly subscribed channels until they are added to sendCases.
-	mu    sync.Mutex
-	inbox caseList
-	etype reflect.Type
-}
-
-// This is the index of the first actual subscription channel in sendCases.
-// sendCases[0] is a SelectRecv case for the removeSub channel.
-const firstSubSendCase = 1
-
-type feedTypeError struct {
-	got, want reflect.Type
-	op        string
-}
-
-func (e feedTypeError) Error() string {
-	return "event: wrong type in " + e.op + " got " + e.got.String() + ", want " + e.want.String()
-}
-
-func (f *Feed) init() {
-	f.removeSub = make(chan interface{})
-	f.sendLock = make(chan struct{}, 1)
-	f.sendLock <- struct{}{}
-	f.sendCases = caseList{{Chan: reflect.ValueOf(f.removeSub), Dir: reflect.SelectRecv}}
-}
-
-// Subscribe adds a channel to the feed. Future sends will be delivered on the channel
-// until the subscription is canceled. All channels added must have the same element type.
-//
-// The channel should have ample buffer space to avoid blocking other subscribers.
-// Slow subscribers are not dropped.
-func (f *Feed) Subscribe(channel interface{}) Subscription {
-	f.once.Do(f.init)
-
-	chanval := reflect.ValueOf(channel)
-	chantyp := chanval.Type()
-	if chantyp.Kind() != reflect.Chan || chantyp.ChanDir()&reflect.SendDir == 0 {
-		panic(errBadChannel)
-	}
-	sub := &feedSub{feed: f, channel: chanval, err: make(chan error, 1)}
-
-	f.mu.Lock()
-	defer f.mu.Unlock()
-	if !f.typecheck(chantyp.Elem()) {
-		panic(feedTypeError{op: "Subscribe", got: chantyp, want: reflect.ChanOf(reflect.SendDir, f.etype)})
-	}
-	// Add the select case to the inbox.
-	// The next Send will add it to f.sendCases.
-	cas := reflect.SelectCase{Dir: reflect.SelectSend, Chan: chanval}
-	f.inbox = append(f.inbox, cas)
-	return sub
-}
-
-// note: callers must hold f.mu
-func (f *Feed) typecheck(typ reflect.Type) bool {
-	if f.etype == nil {
-		f.etype = typ
-		return true
-	}
-	// In the event the feed's type is an actual interface, we
-	// perform an interface conformance check here.
-	if f.etype.Kind() == reflect.Interface && typ.Implements(f.etype) {
-		return true
-	}
-	return f.etype == typ
-}
-
-func (f *Feed) remove(sub *feedSub) {
-	// Delete from inbox first, which covers channels
-	// that have not been added to f.sendCases yet.
-	ch := sub.channel.Interface()
-	f.mu.Lock()
-	index := f.inbox.find(ch)
-	if index != -1 {
-		f.inbox = f.inbox.delete(index)
-		f.mu.Unlock()
-		return
-	}
-	f.mu.Unlock()
-
-	select {
-	case f.removeSub <- ch:
-		// Send will remove the channel from f.sendCases.
-	case <-f.sendLock:
-		// No Send is in progress, delete the channel now that we have the send lock.
-		f.sendCases = f.sendCases.delete(f.sendCases.find(ch))
-		f.sendLock <- struct{}{}
-	}
-}
-
-// Send delivers to all subscribed channels simultaneously.
-// It returns the number of subscribers that the value was sent to.
-func (f *Feed) Send(value interface{}) (nsent int) {
-	rvalue := reflect.ValueOf(value)
-
-	f.once.Do(f.init)
-	<-f.sendLock
-
-	// Add new cases from the inbox after taking the send lock.
-	f.mu.Lock()
-	f.sendCases = append(f.sendCases, f.inbox...)
-	f.inbox = nil
-
-	if !f.typecheck(rvalue.Type()) {
-		f.sendLock <- struct{}{}
-		f.mu.Unlock()
-		panic(feedTypeError{op: "Send", got: rvalue.Type(), want: f.etype})
-	}
-	f.mu.Unlock()
-
-	// Set the sent value on all channels.
-	for i := firstSubSendCase; i < len(f.sendCases); i++ {
-		f.sendCases[i].Send = rvalue
-	}
-
-	// Send until all channels except removeSub have been chosen. 'cases' tracks a prefix
-	// of sendCases. When a send succeeds, the corresponding case moves to the end of
-	// 'cases' and it shrinks by one element.
-	cases := f.sendCases
-	for {
-		// Fast path: try sending without blocking before adding to the select set.
-		// This should usually succeed if subscribers are fast enough and have free
-		// buffer space.
-		for i := firstSubSendCase; i < len(cases); i++ {
-			if cases[i].Chan.TrySend(rvalue) {
-				nsent++
-				cases = cases.deactivate(i)
-				i--
-			}
-		}
-		if len(cases) == firstSubSendCase {
-			break
-		}
-		// Select on all the receivers, waiting for them to unblock.
-		chosen, recv, _ := reflect.Select(cases)
-		if chosen == 0 /* <-f.removeSub */ {
-			index := f.sendCases.find(recv.Interface())
-			f.sendCases = f.sendCases.delete(index)
-			if index >= 0 && index < len(cases) {
-				// Shrink 'cases' too because the removed case was still active.
-				cases = f.sendCases[:len(cases)-1]
-			}
-		} else {
-			cases = cases.deactivate(chosen)
-			nsent++
-		}
-	}
-
-	// Forget about the sent value and hand off the send lock.
-	for i := firstSubSendCase; i < len(f.sendCases); i++ {
-		f.sendCases[i].Send = reflect.Value{}
-	}
-	f.sendLock <- struct{}{}
-	return nsent
-}
-
-type feedSub struct {
-	feed    *Feed
-	channel reflect.Value
-	errOnce sync.Once
-	err     chan error
-}
-
-// Unsubscribe remove feed subscription.
-func (sub *feedSub) Unsubscribe() {
-	sub.errOnce.Do(func() {
-		sub.feed.remove(sub)
-		close(sub.err)
-	})
-}
-
-// Err returns error channel.
-func (sub *feedSub) Err() <-chan error {
-	return sub.err
-}
-
-type caseList []reflect.SelectCase
-
-// find returns the index of a case containing the given channel.
-func (cs caseList) find(channel interface{}) int {
-	return slices.IndexFunc(cs, func(selectCase reflect.SelectCase) bool {
-		return selectCase.Chan.Interface() == channel
-	})
-}
-
-// delete removes the given case from cs.
-func (cs caseList) delete(index int) caseList {
-	return append(cs[:index], cs[index+1:]...)
-}
-
-// deactivate moves the case at index into the non-accessible portion of the cs slice.
-func (cs caseList) deactivate(index int) caseList {
-	last := len(cs) - 1
-	cs[index], cs[last] = cs[last], cs[index]
-	return cs[:last]
-}
-
-// func (cs caseList) String() string {
-//     s := "["
-//     for i, cas := range cs {
-//             if i != 0 {
-//                     s += ", "
-//             }
-//             switch cas.Dir {
-//             case reflect.SelectSend:
-//                     s += fmt.Sprintf("%v<-", cas.Chan.Interface())
-//             case reflect.SelectRecv:
-//                     s += fmt.Sprintf("<-%v", cas.Chan.Interface())
-//             }
-//     }
-//     return s + "]"
-// }
+// Feed is a re-export of the go-ethereum event feed.
+type Feed = geth_event.Feed

async/event/feed_test.go

@@ -1,509 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package event
-
-import (
-	"fmt"
-	"reflect"
-	"sync"
-	"testing"
-	"time"
-
-	"github.com/prysmaticlabs/prysm/v5/testing/assert"
-)
-
-func TestFeedPanics(t *testing.T) {
-	{
-		var f Feed
-		f.Send(2)
-		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
-		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
-		// Validate it doesn't deadlock.
-		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
-	}
-	{
-		var f Feed
-		ch := make(chan int)
-		f.Subscribe(ch)
-		want := feedTypeError{op: "Send", got: reflect.TypeOf(uint64(0)), want: reflect.TypeOf(0)}
-		assert.NoError(t, checkPanic(want, func() { f.Send(uint64(2)) }))
-	}
-	{
-		var f Feed
-		f.Send(2)
-		want := feedTypeError{op: "Subscribe", got: reflect.TypeOf(make(chan uint64)), want: reflect.TypeOf(make(chan<- int))}
-		assert.NoError(t, checkPanic(want, func() { f.Subscribe(make(chan uint64)) }))
-	}
-	{
-		var f Feed
-		assert.NoError(t, checkPanic(errBadChannel, func() { f.Subscribe(make(<-chan int)) }))
-	}
-	{
-		var f Feed
-		assert.NoError(t, checkPanic(errBadChannel, func() { f.Subscribe(0) }))
-	}
-}
-
-func checkPanic(want error, fn func()) (err error) {
-	defer func() {
-		panicResult := recover()
-		if panicResult == nil {
-			err = fmt.Errorf("didn't panic")
-		} else if !reflect.DeepEqual(panicResult, want) {
-			err = fmt.Errorf("panicked with wrong error: got %q, want %q", panicResult, want)
-		}
-	}()
-	fn()
-	return nil
-}
-
-func TestFeed(t *testing.T) {
-	var feed Feed
-	var done, subscribed sync.WaitGroup
-	subscriber := func(i int) {
-		defer done.Done()
-
-		subchan := make(chan int)
-		sub := feed.Subscribe(subchan)
-		timeout := time.NewTimer(2 * time.Second)
-		subscribed.Done()
-
-		select {
-		case v := <-subchan:
-			if v != 1 {
-				t.Errorf("%d: received value %d, want 1", i, v)
-			}
-		case <-timeout.C:
-			t.Errorf("%d: receive timeout", i)
-		}
-
-		sub.Unsubscribe()
-		select {
-		case _, ok := <-sub.Err():
-			if ok {
-				t.Errorf("%d: error channel not closed after unsubscribe", i)
-			}
-		case <-timeout.C:
-			t.Errorf("%d: unsubscribe timeout", i)
-		}
-	}
-
-	const n = 1000
-	done.Add(n)
-	subscribed.Add(n)
-	for i := 0; i < n; i++ {
-		go subscriber(i)
-	}
-	subscribed.Wait()
-	if nsent := feed.Send(1); nsent != n {
-		t.Errorf("first send delivered %d times, want %d", nsent, n)
-	}
-	if nsent := feed.Send(2); nsent != 0 {
-		t.Errorf("second send delivered %d times, want 0", nsent)
-	}
-	done.Wait()
-}
-
-func TestFeedSubscribeSameChannel(t *testing.T) {
-	var (
-		feed Feed
-		done sync.WaitGroup
-		ch   = make(chan int)
-		sub1 = feed.Subscribe(ch)
-		sub2 = feed.Subscribe(ch)
-		_    = feed.Subscribe(ch)
-	)
-	expectSends := func(value, n int) {
-		if nsent := feed.Send(value); nsent != n {
-			t.Errorf("send delivered %d times, want %d", nsent, n)
-		}
-		done.Done()
-	}
-	expectRecv := func(wantValue, n int) {
-		for i := 0; i < n; i++ {
-			if v := <-ch; v != wantValue {
-				t.Errorf("received %d, want %d", v, wantValue)
-			}
-		}
-	}
-
-	done.Add(1)
-	go expectSends(1, 3)
-	expectRecv(1, 3)
-	done.Wait()
-
-	sub1.Unsubscribe()
-
-	done.Add(1)
-	go expectSends(2, 2)
-	expectRecv(2, 2)
-	done.Wait()
-
-	sub2.Unsubscribe()
-
-	done.Add(1)
-	go expectSends(3, 1)
-	expectRecv(3, 1)
-	done.Wait()
-}
-
-func TestFeedSubscribeBlockedPost(_ *testing.T) {
-	var (
-		feed   Feed
-		nsends = 2000
-		ch1    = make(chan int)
-		ch2    = make(chan int)
-		wg     sync.WaitGroup
-	)
-	defer wg.Wait()
-
-	feed.Subscribe(ch1)
-	wg.Add(nsends)
-	for i := 0; i < nsends; i++ {
-		go func() {
-			feed.Send(99)
-			wg.Done()
-		}()
-	}
-
-	sub2 := feed.Subscribe(ch2)
-	defer sub2.Unsubscribe()
-
-	// We're done when ch1 has received N times.
-	// The number of receives on ch2 depends on scheduling.
-	for i := 0; i < nsends; {
-		select {
-		case <-ch1:
-			i++
-		case <-ch2:
-		}
-	}
-}
-
-func TestFeedUnsubscribeBlockedPost(_ *testing.T) {
-	var (
-		feed   Feed
-		nsends = 200
-		chans  = make([]chan int, 2000)
-		subs   = make([]Subscription, len(chans))
-		bchan  = make(chan int)
-		bsub   = feed.Subscribe(bchan)
-		wg     sync.WaitGroup
-	)
-	for i := range chans {
-		chans[i] = make(chan int, nsends)
-	}
-
-	// Queue up some Sends. None of these can make progress while bchan isn't read.
-	wg.Add(nsends)
-	for i := 0; i < nsends; i++ {
-		go func() {
-			feed.Send(99)
-			wg.Done()
-		}()
-	}
-	// Subscribe the other channels.
-	for i, ch := range chans {
-		subs[i] = feed.Subscribe(ch)
-	}
-	// Unsubscribe them again.
-	for _, sub := range subs {
-		sub.Unsubscribe()
-	}
-	// Unblock the Sends.
-	bsub.Unsubscribe()
-	wg.Wait()
-}
-
-// Checks that unsubscribing a channel during Send works even if that
-// channel has already been sent on.
-func TestFeedUnsubscribeSentChan(_ *testing.T) {
-	var (
-		feed Feed
-		ch1  = make(chan int)
-		ch2  = make(chan int)
-		sub1 = feed.Subscribe(ch1)
-		sub2 = feed.Subscribe(ch2)
-		wg   sync.WaitGroup
-	)
-	defer sub2.Unsubscribe()
-
-	wg.Add(1)
-	go func() {
-		feed.Send(0)
-		wg.Done()
-	}()
-
-	// Wait for the value on ch1.
-	<-ch1
-	// Unsubscribe ch1, removing it from the send cases.
-	sub1.Unsubscribe()
-
-	// Receive ch2, finishing Send.
-	<-ch2
-	wg.Wait()
-
-	// Send again. This should send to ch2 only, so the wait group will unblock
-	// as soon as a value is received on ch2.
-	wg.Add(1)
-	go func() {
-		feed.Send(0)
-		wg.Done()
-	}()
-	<-ch2
-	wg.Wait()
-}
-
-func TestFeedUnsubscribeFromInbox(t *testing.T) {
-	var (
-		feed Feed
-		ch1  = make(chan int)
-		ch2  = make(chan int)
-		sub1 = feed.Subscribe(ch1)
-		sub2 = feed.Subscribe(ch1)
-		sub3 = feed.Subscribe(ch2)
-	)
-	assert.Equal(t, 3, len(feed.inbox))
-	assert.Equal(t, 1, len(feed.sendCases), "sendCases is non-empty after unsubscribe")
-
-	sub1.Unsubscribe()
-	sub2.Unsubscribe()
-	sub3.Unsubscribe()
-	assert.Equal(t, 0, len(feed.inbox), "Inbox is non-empty after unsubscribe")
-	assert.Equal(t, 1, len(feed.sendCases), "sendCases is non-empty after unsubscribe")
-}
-
-func BenchmarkFeedSend1000(b *testing.B) {
-	var (
-		done  sync.WaitGroup
-		feed  Feed
-		nsubs = 1000
-	)
-	subscriber := func(ch <-chan int) {
-		for i := 0; i < b.N; i++ {
-			<-ch
-		}
-		done.Done()
-	}
-	done.Add(nsubs)
-	for i := 0; i < nsubs; i++ {
-		ch := make(chan int, 200)
-		feed.Subscribe(ch)
-		go subscriber(ch)
-	}
-
-	// The actual benchmark.
-	b.ResetTimer()
-	for i := 0; i < b.N; i++ {
-		if feed.Send(i) != nsubs {
-			panic("wrong number of sends")
-		}
-	}
-
-	b.StopTimer()
-	done.Wait()
-}
-
-func TestFeed_Send(t *testing.T) {
-	tests := []struct {
-		name        string
-		evFeed      *Feed
-		testSetup   func(fd *Feed, t *testing.T, o interface{})
-		obj         interface{}
-		expectPanic bool
-	}{
-		{
-			name:   "normal struct",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeedWithPointer, 1)
-				fd.Subscribe(testChan)
-			},
-			obj: testFeedWithPointer{
-				a: new(uint64),
-				b: new(string),
-			},
-			expectPanic: false,
-		},
-		{
-			name:   "un-implemented interface",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeedIface, 1)
-				fd.Subscribe(testChan)
-			},
-			obj: testFeedWithPointer{
-				a: new(uint64),
-				b: new(string),
-			},
-			expectPanic: true,
-		},
-		{
-			name:   "semi-implemented interface",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeedIface, 1)
-				fd.Subscribe(testChan)
-			},
-			obj: testFeed2{
-				a: 0,
-				b: "",
-				c: []byte{'A'},
-			},
-			expectPanic: true,
-		},
-		{
-			name:   "fully-implemented interface",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeedIface)
-				// Make it unbuffered to allow message to
-				// pass through
-				go func() {
-					a := <-testChan
-					if !reflect.DeepEqual(a, o) {
-						t.Errorf("Got = %v, want = %v", a, o)
-					}
-				}()
-				fd.Subscribe(testChan)
-			},
-			obj: testFeed{
-				a: 0,
-				b: "",
-			},
-			expectPanic: false,
-		},
-		{
-			name:   "fully-implemented interface with additional methods",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeedIface)
-				// Make it unbuffered to allow message to
-				// pass through
-				go func() {
-					a := <-testChan
-					if !reflect.DeepEqual(a, o) {
-						t.Errorf("Got = %v, want = %v", a, o)
-					}
-				}()
-				fd.Subscribe(testChan)
-			},
-			obj: testFeed3{
-				a: 0,
-				b: "",
-				c: []byte{'A'},
-				d: []byte{'B'},
-			},
-			expectPanic: false,
-		},
-		{
-			name:   "concrete types implementing the same interface",
-			evFeed: new(Feed),
-			testSetup: func(fd *Feed, t *testing.T, o interface{}) {
-				testChan := make(chan testFeed, 1)
-				// Make it unbuffered to allow message to
-				// pass through
-				go func() {
-					a := <-testChan
-					if !reflect.DeepEqual(a, o) {
-						t.Errorf("Got = %v, want = %v", a, o)
-					}
-				}()
-				fd.Subscribe(testChan)
-			},
-			obj: testFeed3{
-				a: 0,
-				b: "",
-				c: []byte{'A'},
-				d: []byte{'B'},
-			},
-			expectPanic: true,
-		},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			defer func() {
-				if r := recover(); r != nil {
-					if !tt.expectPanic {
-						t.Errorf("panic triggered when unexpected: %v", r)
-					}
-				} else {
-					if tt.expectPanic {
-						t.Error("panic not triggered when expected")
-					}
-				}
-			}()
-			tt.testSetup(tt.evFeed, t, tt.obj)
-			if gotNsent := tt.evFeed.Send(tt.obj); gotNsent != 1 {
-				t.Errorf("Send() = %v, want %v", gotNsent, 1)
-			}
-		})
-	}
-}
-
-// The following objects below are a collection of different
-// struct types to test with.
-type testFeed struct {
-	a uint64
-	b string
-}
-
-func (testFeed) method1() {
-
-}
-
-func (testFeed) method2() {
-
-}
-
-type testFeedWithPointer struct {
-	a *uint64
-	b *string
-}
-
-type testFeed2 struct {
-	a uint64
-	b string
-	c []byte
-}
-
-func (testFeed2) method1() {
-
-}
-
-type testFeed3 struct {
-	a    uint64
-	b    string
-	c, d []byte
-}
-
-func (testFeed3) method1() {
-
-}
-
-func (testFeed3) method2() {
-
-}
-
-func (testFeed3) method3() {
-
-}
-
-type testFeedIface interface {
-	method1()
-	method2()
-}

beacon-chain/blockchain/BUILD.bazel

@@ -6,6 +6,7 @@ go_library(
         "chain_info.go",
         "chain_info_forkchoice.go",
         "currently_syncing_block.go",
+        "currently_syncing_execution_payload_envelope.go",
         "defragment.go",
         "error.go",
         "execution_engine.go",
@@ -25,6 +26,8 @@ go_library(
         "receive_attestation.go",
         "receive_blob.go",
         "receive_block.go",
+        "receive_execution_payload_envelope.go",
+        "receive_payload_attestation_message.go",
         "service.go",
         "tracked_proposer.go",
         "weak_subjectivity_checks.go",
@@ -43,6 +46,7 @@ go_library(
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/core/altair:go_default_library",
         "//beacon-chain/core/blocks:go_default_library",
+        "//beacon-chain/core/epbs:go_default_library",
         "//beacon-chain/core/epoch/precompute:go_default_library",
         "//beacon-chain/core/feed:go_default_library",
         "//beacon-chain/core/feed/state:go_default_library",
@@ -110,6 +114,7 @@ go_test(
         "chain_info_norace_test.go",
         "chain_info_test.go",
         "checktags_test.go",
+        "epbs_test.go",
         "error_test.go",
         "execution_engine_test.go",
         "forkchoice_update_execution_test.go",
@@ -125,6 +130,7 @@ go_test(
         "process_block_test.go",
         "receive_attestation_test.go",
         "receive_block_test.go",
+        "receive_execution_payload_envelope_test.go",
         "service_norace_test.go",
         "service_test.go",
         "setup_test.go",
@@ -178,6 +184,7 @@ go_test(
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
+        "//testing/util/random:go_default_library",
         "//time:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",

beacon-chain/blockchain/chain_info.go

@@ -42,7 +42,7 @@ type ForkchoiceFetcher interface {
 	GetProposerHead() [32]byte
 	SetForkChoiceGenesisTime(uint64)
 	UpdateHead(context.Context, primitives.Slot)
-	HighestReceivedBlockSlot() primitives.Slot
+	HighestReceivedBlockSlotRoot() (primitives.Slot, [32]byte)
 	ReceivedBlocksLastEpoch() (uint64, error)
 	InsertNode(context.Context, state.BeaconState, [32]byte) error
 	ForkChoiceDump(context.Context) (*forkchoice.Dump, error)
@@ -50,6 +50,7 @@ type ForkchoiceFetcher interface {
 	ProposerBoost() [32]byte
 	RecentBlockSlot(root [32]byte) (primitives.Slot, error)
 	IsCanonical(ctx context.Context, blockRoot [32]byte) (bool, error)
+	GetPTCVote(root [32]byte) primitives.PTCStatus
 }
 
 // TimeFetcher retrieves the Ethereum consensus data that's related to time.
@@ -118,6 +119,12 @@ type OptimisticModeFetcher interface {
 	IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error)
 }
 
+// ExecutionPayloadFetcher defines a common interface that returns forkchoice
+// information about payload block hashes
+type ExecutionPayloadFetcher interface {
+	HashInForkchoice([32]byte) bool
+}
+
 // FinalizedCheckpt returns the latest finalized checkpoint from chain store.
 func (s *Service) FinalizedCheckpt() *ethpb.Checkpoint {
 	s.cfg.ForkChoiceStore.RLock()
@@ -203,7 +210,7 @@ func (s *Service) HeadState(ctx context.Context) (state.BeaconState, error) {
 	defer s.headLock.RUnlock()
 
 	ok := s.hasHeadState()
-	span.AddAttributes(trace.BoolAttribute("cache_hit", ok))
+	span.SetAttributes(trace.BoolAttribute("cache_hit", ok))
 
 	if ok {
 		return s.headState(ctx), nil
@@ -225,7 +232,7 @@ func (s *Service) HeadStateReadOnly(ctx context.Context) (state.ReadOnlyBeaconSt
 	defer s.headLock.RUnlock()
 
 	ok := s.hasHeadState()
-	span.AddAttributes(trace.BoolAttribute("cache_hit", ok))
+	span.SetAttributes(trace.BoolAttribute("cache_hit", ok))
 
 	if ok {
 		return s.headStateReadOnly(ctx), nil
@@ -399,6 +406,14 @@ func (s *Service) InForkchoice(root [32]byte) bool {
 	return s.cfg.ForkChoiceStore.HasNode(root)
 }
 
+// HashInForkchoice returns true if the given payload block hash is found in
+// forkchoice
+func (s *Service) HashInForkchoice(hash [32]byte) bool {
+	s.cfg.ForkChoiceStore.RLock()
+	defer s.cfg.ForkChoiceStore.RUnlock()
+	return s.cfg.ForkChoiceStore.HasHash(hash)
+}
+
 // IsOptimisticForRoot takes the root as argument instead of the current head
 // and returns true if it is optimistic.
 func (s *Service) IsOptimisticForRoot(ctx context.Context, root [32]byte) (bool, error) {

beacon-chain/blockchain/chain_info_forkchoice.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/forkchoice"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 )
 
@@ -29,11 +30,11 @@ func (s *Service) SetForkChoiceGenesisTime(timestamp uint64) {
 	s.cfg.ForkChoiceStore.SetGenesisTime(timestamp)
 }
 
-// HighestReceivedBlockSlot returns the corresponding value from forkchoice
-func (s *Service) HighestReceivedBlockSlot() primitives.Slot {
+// HighestReceivedBlockSlotRoot returns the corresponding value from forkchoice
+func (s *Service) HighestReceivedBlockSlotRoot() (primitives.Slot, [32]byte) {
 	s.cfg.ForkChoiceStore.RLock()
 	defer s.cfg.ForkChoiceStore.RUnlock()
-	return s.cfg.ForkChoiceStore.HighestReceivedBlockSlot()
+	return s.cfg.ForkChoiceStore.HighestReceivedBlockSlotRoot()
 }
 
 // ReceivedBlocksLastEpoch returns the corresponding value from forkchoice
@@ -99,3 +100,30 @@ func (s *Service) ParentRoot(root [32]byte) ([32]byte, error) {
 	defer s.cfg.ForkChoiceStore.RUnlock()
 	return s.cfg.ForkChoiceStore.ParentRoot(root)
 }
+
+// GetPTCVote wraps a call to the corresponding method in forkchoice and checks
+// the currently syncing status
+// Warning: this method will return the current PTC status regardless of
+// timeliness. A client MUST call this method when about to submit a PTC
+// attestation, that is exactly at the threshold to submit the attestation.
+func (s *Service) GetPTCVote(root [32]byte) primitives.PTCStatus {
+	s.cfg.ForkChoiceStore.RLock()
+	f := s.cfg.ForkChoiceStore.GetPTCVote()
+	s.cfg.ForkChoiceStore.RUnlock()
+	if f != primitives.PAYLOAD_ABSENT {
+		return f
+	}
+	f, isSyncing := s.payloadBeingSynced.isSyncing(root)
+	if isSyncing {
+		return f
+	}
+	return primitives.PAYLOAD_ABSENT
+}
+
+// insertPayloadEnvelope wraps a locked call to the corresponding method in
+// forkchoice
+func (s *Service) insertPayloadEnvelope(envelope interfaces.ROExecutionPayloadEnvelope) error {
+	s.cfg.ForkChoiceStore.Lock()
+	defer s.cfg.ForkChoiceStore.Unlock()
+	return s.cfg.ForkChoiceStore.InsertPayloadEnvelope(envelope)
+}

beacon-chain/blockchain/currently_syncing_execution_payload_envelope.go

@@ -0,0 +1,36 @@
+package blockchain
+
+import (
+	"sync"
+
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+)
+
+type currentlySyncingPayload struct {
+	sync.Mutex
+	roots map[[32]byte]primitives.PTCStatus
+}
+
+func (b *currentlySyncingPayload) set(envelope interfaces.ROExecutionPayloadEnvelope) {
+	b.Lock()
+	defer b.Unlock()
+	if envelope.PayloadWithheld() {
+		b.roots[envelope.BeaconBlockRoot()] = primitives.PAYLOAD_WITHHELD
+	} else {
+		b.roots[envelope.BeaconBlockRoot()] = primitives.PAYLOAD_PRESENT
+	}
+}
+
+func (b *currentlySyncingPayload) unset(root [32]byte) {
+	b.Lock()
+	defer b.Unlock()
+	delete(b.roots, root)
+}
+
+func (b *currentlySyncingPayload) isSyncing(root [32]byte) (status primitives.PTCStatus, isSyncing bool) {
+	b.Lock()
+	defer b.Unlock()
+	status, isSyncing = b.roots[root]
+	return
+}

beacon-chain/blockchain/epbs_test.go

@@ -0,0 +1,18 @@
+package blockchain
+
+import (
+	"testing"
+
+	doublylinkedtree "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/doubly-linked-tree"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestServiceGetPTCVote(t *testing.T) {
+	c := &currentlySyncingPayload{roots: make(map[[32]byte]primitives.PTCStatus)}
+	s := &Service{cfg: &config{ForkChoiceStore: doublylinkedtree.New()}, payloadBeingSynced: c}
+	r := [32]byte{'r'}
+	require.Equal(t, primitives.PAYLOAD_ABSENT, s.GetPTCVote(r))
+	c.roots[r] = primitives.PAYLOAD_WITHHELD
+	require.Equal(t, primitives.PAYLOAD_WITHHELD, s.GetPTCVote(r))
+}

beacon-chain/blockchain/error.go

@@ -30,6 +30,9 @@ var (
 	ErrNotCheckpoint = errors.New("not a checkpoint in forkchoice")
 	// ErrNilHead is returned when no head is present in the blockchain service.
 	ErrNilHead = errors.New("nil head")
+	// errInvalidValidatorIndex is returned when a validator index is
+	// invalid or unexpected
+	errInvalidValidatorIndex = errors.New("invalid validator index")
 )
 
 var errMaxBlobsExceeded = errors.New("Expected commitments in block exceeds MAX_BLOBS_PER_BLOCK")

beacon-chain/blockchain/execution_engine.go

@@ -2,7 +2,6 @@ package blockchain
 
 import (
 	"context"
-	"crypto/sha256"
 	"fmt"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -28,8 +27,6 @@ import (
 	"github.com/sirupsen/logrus"
 )
 
-const blobCommitmentVersionKZG uint8 = 0x01
-
 var defaultLatestValidHash = bytesutil.PadTo([]byte{0xff}, 32)
 
 // notifyForkchoiceUpdate signals execution engine the fork choice updates. Execution engine should:
@@ -39,7 +36,7 @@ func (s *Service) notifyForkchoiceUpdate(ctx context.Context, arg *fcuConfig) (*
 	ctx, span := trace.StartSpan(ctx, "blockChain.notifyForkchoiceUpdate")
 	defer span.End()
 
-	if arg.headBlock.IsNil() {
+	if arg.headBlock == nil || arg.headBlock.IsNil() {
 		log.Error("Head block is nil")
 		return nil, nil
 	}
@@ -402,13 +399,7 @@ func kzgCommitmentsToVersionedHashes(body interfaces.ReadOnlyBeaconBlockBody) ([
 
 	versionedHashes := make([]common.Hash, len(commitments))
 	for i, commitment := range commitments {
-		versionedHashes[i] = ConvertKzgCommitmentToVersionedHash(commitment)
+		versionedHashes[i] = primitives.ConvertKzgCommitmentToVersionedHash(commitment)
 	}
 	return versionedHashes, nil
 }
-
-func ConvertKzgCommitmentToVersionedHash(commitment []byte) common.Hash {
-	versionedHash := sha256.Sum256(commitment)
-	versionedHash[0] = blobCommitmentVersionKZG
-	return versionedHash
-}

beacon-chain/blockchain/execution_engine_test.go

@@ -1056,8 +1056,8 @@ func TestService_removeInvalidBlockAndState(t *testing.T) {
 
 	require.NoError(t, service.removeInvalidBlockAndState(ctx, [][32]byte{r1, r2}))
 
-	require.Equal(t, false, service.hasBlock(ctx, r1))
-	require.Equal(t, false, service.hasBlock(ctx, r2))
+	require.Equal(t, false, service.chainHasBlock(ctx, r1))
+	require.Equal(t, false, service.chainHasBlock(ctx, r2))
 	require.Equal(t, false, service.cfg.BeaconDB.HasStateSummary(ctx, r1))
 	require.Equal(t, false, service.cfg.BeaconDB.HasStateSummary(ctx, r2))
 	has, err := service.cfg.StateGen.HasState(ctx, r1)

beacon-chain/blockchain/forkchoice_update_execution.go

@@ -12,9 +12,9 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	payloadattribute "github.com/prysmaticlabs/prysm/v5/consensus-types/payload-attribute"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	"github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
 )
 
 func (s *Service) isNewHead(r [32]byte) bool {

beacon-chain/blockchain/metrics.go

@@ -182,6 +182,10 @@ var (
 		Name: "chain_service_processing_milliseconds",
 		Help: "Total time to call a chain service in ReceiveBlock()",
 	})
+	executionEngineProcessingTime = promauto.NewSummary(prometheus.SummaryOpts{
+		Name: "execution_engine_processing_milliseconds",
+		Help: "Total time to process an execution payload envelope in ReceiveExecutionPayloadEnvelope()",
+	})
 	dataAvailWaitedTime = promauto.NewSummary(prometheus.SummaryOpts{
 		Name: "da_waited_time_milliseconds",
 		Help: "Total time spent waiting for a data availability check in ReceiveBlock()",

beacon-chain/blockchain/options.go

@@ -1,6 +1,8 @@
 package blockchain
 
 import (
+	"sync"
+
 	"github.com/prysmaticlabs/prysm/v5/async/event"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
 	statefeed "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/feed/state"
@@ -69,6 +71,22 @@ func WithDepositCache(c cache.DepositCache) Option {
 	}
 }
 
+// WithPayloadAttestationCache for payload attestation cache.
+func WithPayloadAttestationCache(c *cache.PayloadAttestationCache) Option {
+	return func(s *Service) error {
+		s.cfg.PayloadAttestationCache = c
+		return nil
+	}
+}
+
+// WithPayloadEnvelopeCache for payload envelope cache.
+func WithPayloadEnvelopeCache(c *sync.Map) Option {
+	return func(s *Service) error {
+		s.cfg.PayloadEnvelopeCache = c
+		return nil
+	}
+}
+
 // WithPayloadIDCache for payload ID cache.
 func WithPayloadIDCache(c *cache.PayloadIDCache) Option {
 	return func(s *Service) error {

beacon-chain/blockchain/pow_block.go

@@ -46,7 +46,7 @@ func (s *Service) validateMergeBlock(ctx context.Context, b interfaces.ReadOnlyS
 	if err != nil {
 		return err
 	}
-	if payload.IsNil() {
+	if payload == nil || payload.IsNil() {
 		return errors.New("nil execution payload")
 	}
 	ok, err := canUseValidatedTerminalBlockHash(b.Block().Slot(), payload)

beacon-chain/blockchain/process_attestation.go

@@ -7,10 +7,10 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1/attestation"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
-	"go.opencensus.io/trace"
 )
 
 // OnAttestation is called whenever an attestation is received, verifies the attestation is valid and saves
@@ -97,7 +97,7 @@ func (s *Service) OnAttestation(ctx context.Context, a ethpb.Att, disparity time
 	// We assume trusted attestation in this function has verified signature.
 
 	// Update forkchoice store with the new attestation for updating weight.
-	s.cfg.ForkChoiceStore.ProcessAttestation(ctx, indexedAtt.GetAttestingIndices(), bytesutil.ToBytes32(a.GetData().BeaconBlockRoot), a.GetData().Target.Epoch)
+	s.cfg.ForkChoiceStore.ProcessAttestation(ctx, indexedAtt.GetAttestingIndices(), bytesutil.ToBytes32(a.GetData().BeaconBlockRoot), a.GetData().Slot)
 
 	return nil
 }

beacon-chain/blockchain/process_block.go

@@ -375,7 +375,7 @@ func (s *Service) handleBlockAttestations(ctx context.Context, blk interfaces.Re
 		}
 		r := bytesutil.ToBytes32(a.GetData().BeaconBlockRoot)
 		if s.cfg.ForkChoiceStore.HasNode(r) {
-			s.cfg.ForkChoiceStore.ProcessAttestation(ctx, indices, r, a.GetData().Target.Epoch)
+			s.cfg.ForkChoiceStore.ProcessAttestation(ctx, indices, r, a.GetData().Slot)
 		} else if err := s.cfg.AttPool.SaveBlockAttestation(a); err != nil {
 			return err
 		}

beacon-chain/blockchain/process_block_helpers.go

@@ -193,7 +193,7 @@ func (s *Service) sendLightClientFinalityUpdate(ctx context.Context, signed inte
 	// Return the result
 	result := &ethpbv2.LightClientFinalityUpdateWithVersion{
 		Version: ethpbv2.Version(signed.Version()),
-		Data:    lightclient.CreateLightClientFinalityUpdate(update),
+		Data:    update,
 	}
 
 	// Send event
@@ -227,7 +227,7 @@ func (s *Service) sendLightClientOptimisticUpdate(ctx context.Context, signed in
 	// Return the result
 	result := &ethpbv2.LightClientOptimisticUpdateWithVersion{
 		Version: ethpbv2.Version(signed.Version()),
-		Data:    lightclient.CreateLightClientOptimisticUpdate(update),
+		Data:    update,
 	}
 
 	return s.cfg.StateNotifier.StateFeed().Send(&feed.Event{

beacon-chain/blockchain/receive_attestation.go

@@ -177,7 +177,7 @@ func (s *Service) processAttestations(ctx context.Context, disparity time.Durati
 		}
 
 		hasState := s.cfg.BeaconDB.HasStateSummary(ctx, bytesutil.ToBytes32(a.GetData().BeaconBlockRoot))
-		hasBlock := s.hasBlock(ctx, bytesutil.ToBytes32(a.GetData().BeaconBlockRoot))
+		hasBlock := s.chainHasBlock(ctx, bytesutil.ToBytes32(a.GetData().BeaconBlockRoot))
 		if !(hasState && hasBlock) {
 			continue
 		}

beacon-chain/blockchain/receive_block.go

@@ -39,18 +39,30 @@ var epochsSinceFinalityExpandCache = primitives.Epoch(4)
 // BlockReceiver interface defines the methods of chain service for receiving and processing new blocks.
 type BlockReceiver interface {
 	ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock, blockRoot [32]byte, avs das.AvailabilityStore) error
+	ReceiveExecutionPayloadEnvelope(ctx context.Context, env interfaces.ROExecutionPayloadEnvelope, avs das.AvailabilityStore) error
 	ReceiveBlockBatch(ctx context.Context, blocks []blocks.ROBlock, avs das.AvailabilityStore) error
 	HasBlock(ctx context.Context, root [32]byte) bool
 	RecentBlockSlot(root [32]byte) (primitives.Slot, error)
 	BlockBeingSynced([32]byte) bool
 }
 
+// PayloadAttestationReceiver defines methods of the chain service for receiving
+// and processing new payload attestations and payload attestation messages
+type PayloadAttestationReceiver interface {
+	ReceivePayloadAttestationMessage(ctx context.Context, a *ethpb.PayloadAttestationMessage) error
+}
+
 // BlobReceiver interface defines the methods of chain service for receiving new
 // blobs
 type BlobReceiver interface {
 	ReceiveBlob(context.Context, blocks.VerifiedROBlob) error
 }
 
+// ExecutionPayloadReceiver interface defines the methods of chain service for receiving `ROExecutionPayloadEnvelope`.
+type ExecutionPayloadReceiver interface {
+	ReceiveExecutionPayloadEnvelope(ctx context.Context, envelope interfaces.ROExecutionPayloadEnvelope, _ das.AvailabilityStore) error
+}
+
 // SlashingReceiver interface defines the methods of chain service for receiving validated slashing over the wire.
 type SlashingReceiver interface {
 	ReceiveAttesterSlashing(ctx context.Context, slashing ethpb.AttSlashing)

beacon-chain/blockchain/receive_execution_payload_envelope.go

@@ -0,0 +1,152 @@
+package blockchain
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epbs"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/execution"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/sirupsen/logrus"
+	"go.opencensus.io/trace"
+	"golang.org/x/sync/errgroup"
+)
+
+// ReceiveExecutionPayloadEnvelope is a function that defines the operations (minus pubsub)
+// that are performed on a received execution payload envelope. The operations consist of:
+//  1. Validate the payload, apply state transition.
+//  2. Apply fork choice to the processed payload
+//  3. Save latest head info
+func (s *Service) ReceiveExecutionPayloadEnvelope(ctx context.Context, envelope interfaces.ROExecutionPayloadEnvelope, _ das.AvailabilityStore) error {
+	receivedTime := time.Now()
+	root := envelope.BeaconBlockRoot()
+	s.payloadBeingSynced.set(envelope)
+	defer s.payloadBeingSynced.unset(root)
+
+	preState, err := s.getPayloadEnvelopePrestate(ctx, envelope)
+	if err != nil {
+		return errors.Wrap(err, "could not get prestate")
+	}
+
+	eg, _ := errgroup.WithContext(ctx)
+	var postState state.BeaconState
+	eg.Go(func() error {
+		if err := epbs.ValidatePayloadStateTransition(ctx, preState, envelope); err != nil {
+			return errors.Wrap(err, "failed to validate consensus state transition function")
+		}
+		return nil
+	})
+	var isValidPayload bool
+	eg.Go(func() error {
+		var err error
+		isValidPayload, err = s.validateExecutionOnEnvelope(ctx, envelope)
+		if err != nil {
+			return errors.Wrap(err, "could not notify the engine of the new payload")
+		}
+		return nil
+	})
+
+	if err := eg.Wait(); err != nil {
+		return err
+	}
+	_ = isValidPayload
+	_ = postState
+	daStartTime := time.Now()
+	// TODO: Add DA check
+	daWaitedTime := time.Since(daStartTime)
+	dataAvailWaitedTime.Observe(float64(daWaitedTime.Milliseconds()))
+	// TODO: Add Head update, cache handling, postProcessing
+	if err := s.insertPayloadEnvelope(envelope); err != nil {
+		return errors.Wrap(err, "could not insert payload to forkchoice")
+	}
+	timeWithoutDaWait := time.Since(receivedTime) - daWaitedTime
+	executionEngineProcessingTime.Observe(float64(timeWithoutDaWait.Milliseconds()))
+	return nil
+}
+
+// notifyNewPayload signals execution engine on a new payload.
+// It returns true if the EL has returned VALID for the block
+func (s *Service) notifyNewEnvelope(ctx context.Context, envelope interfaces.ROExecutionPayloadEnvelope) (bool, error) {
+	ctx, span := trace.StartSpan(ctx, "blockChain.notifyNewPayload")
+	defer span.End()
+
+	payload, err := envelope.Execution()
+	if err != nil {
+		return false, errors.Wrap(err, "could not get execution payload")
+	}
+
+	versionedHashes := envelope.VersionedHashes()
+	root := envelope.BeaconBlockRoot()
+	parentRoot, err := s.ParentRoot(root)
+	if err != nil {
+		return false, errors.Wrap(err, "could not get parent block root")
+	}
+	pr := common.Hash(parentRoot)
+	lastValidHash, err := s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, versionedHashes, &pr)
+	switch {
+	case err == nil:
+		newPayloadValidNodeCount.Inc()
+		return true, nil
+	case errors.Is(err, execution.ErrAcceptedSyncingPayloadStatus):
+		newPayloadOptimisticNodeCount.Inc()
+		log.WithFields(logrus.Fields{
+			"payloadBlockHash": fmt.Sprintf("%#x", bytesutil.Trunc(payload.BlockHash())),
+		}).Info("Called new payload with optimistic block")
+		return false, nil
+	case errors.Is(err, execution.ErrInvalidPayloadStatus):
+		lvh := bytesutil.ToBytes32(lastValidHash)
+		return false, invalidBlock{
+			error:         ErrInvalidPayload,
+			lastValidHash: lvh,
+		}
+	default:
+		return false, errors.WithMessage(ErrUndefinedExecutionEngineError, err.Error())
+	}
+}
+
+// validateExecutionOnEnvelope notifies the engine of the incoming execution payload and returns true if the payload is valid
+func (s *Service) validateExecutionOnEnvelope(ctx context.Context, e interfaces.ROExecutionPayloadEnvelope) (bool, error) {
+	isValidPayload, err := s.notifyNewEnvelope(ctx, e)
+	if err == nil {
+		return isValidPayload, nil
+	}
+	blockRoot := e.BeaconBlockRoot()
+	parentRoot, rootErr := s.ParentRoot(blockRoot)
+	if rootErr != nil {
+		return false, errors.Wrap(rootErr, "could not get parent block root")
+	}
+	s.cfg.ForkChoiceStore.Lock()
+	err = s.handleInvalidExecutionError(ctx, err, blockRoot, parentRoot)
+	s.cfg.ForkChoiceStore.Unlock()
+	return false, err
+}
+
+func (s *Service) getPayloadEnvelopePrestate(ctx context.Context, e interfaces.ROExecutionPayloadEnvelope) (state.BeaconState, error) {
+	ctx, span := trace.StartSpan(ctx, "blockChain.getPayloadEnvelopePreState")
+	defer span.End()
+
+	// Verify incoming payload has a valid pre state.
+	root := e.BeaconBlockRoot()
+	// Verify the referred block is known to forkchoice
+	if !s.InForkchoice(root) {
+		return nil, errors.New("Cannot import execution payload envelope for unknown block")
+	}
+	if err := s.verifyBlkPreState(ctx, root); err != nil {
+		return nil, errors.Wrap(err, "could not verify payload prestate")
+	}
+
+	preState, err := s.cfg.StateGen.StateByRoot(ctx, root)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get pre state")
+	}
+	if preState == nil || preState.IsNil() {
+		return nil, errors.Wrap(err, "nil pre state")
+	}
+	return preState, nil
+}

beacon-chain/blockchain/receive_execution_payload_envelope_test.go

@@ -0,0 +1,99 @@
+package blockchain
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
+	mockExecution "github.com/prysmaticlabs/prysm/v5/beacon-chain/execution/testing"
+	forkchoicetypes "github.com/prysmaticlabs/prysm/v5/beacon-chain/forkchoice/types"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/prysmaticlabs/prysm/v5/testing/util/random"
+)
+
+func Test_getPayloadEnvelopePrestate(t *testing.T) {
+	service, tr := minimalTestService(t)
+	ctx, fcs := tr.ctx, tr.fcs
+
+	gs, _ := util.DeterministicGenesisStateEpbs(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	require.NoError(t, fcs.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Root: service.originBlockRoot}))
+
+	p := random.ExecutionPayloadEnvelope(t)
+	p.BeaconBlockRoot = service.originBlockRoot[:]
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+
+	_, err = service.getPayloadEnvelopePrestate(ctx, e)
+	require.NoError(t, err)
+}
+
+func Test_notifyNewEnvelope(t *testing.T) {
+	service, tr := minimalTestService(t, WithPayloadIDCache(cache.NewPayloadIDCache()))
+	ctx, fcs := tr.ctx, tr.fcs
+	gs, _ := util.DeterministicGenesisStateEpbs(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	require.NoError(t, fcs.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Root: service.originBlockRoot}))
+	p := random.ExecutionPayloadEnvelope(t)
+	p.BeaconBlockRoot = service.originBlockRoot[:]
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	engine := &mockExecution.EngineClient{}
+	service.cfg.ExecutionEngineCaller = engine
+	isValidPayload, err := service.notifyNewEnvelope(ctx, e)
+	require.NoError(t, err)
+	require.Equal(t, true, isValidPayload)
+}
+
+func Test_validateExecutionOnEnvelope(t *testing.T) {
+	service, tr := minimalTestService(t, WithPayloadIDCache(cache.NewPayloadIDCache()))
+	ctx, fcs := tr.ctx, tr.fcs
+	gs, _ := util.DeterministicGenesisStateEpbs(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	require.NoError(t, fcs.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Root: service.originBlockRoot}))
+	p := random.ExecutionPayloadEnvelope(t)
+	p.BeaconBlockRoot = service.originBlockRoot[:]
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	engine := &mockExecution.EngineClient{}
+	service.cfg.ExecutionEngineCaller = engine
+	isValidPayload, err := service.validateExecutionOnEnvelope(ctx, e)
+	require.NoError(t, err)
+	require.Equal(t, true, isValidPayload)
+}
+
+func Test_ReceiveExecutionPayloadEnvelope(t *testing.T) {
+	service, tr := minimalTestService(t, WithPayloadIDCache(cache.NewPayloadIDCache()))
+	ctx, fcs := tr.ctx, tr.fcs
+	gs, _ := util.DeterministicGenesisStateEpbs(t, 32)
+	require.NoError(t, service.saveGenesisData(ctx, gs))
+	require.NoError(t, fcs.UpdateFinalizedCheckpoint(&forkchoicetypes.Checkpoint{Root: service.originBlockRoot}))
+	post := gs.Copy()
+	p := &enginev1.ExecutionPayloadEnvelope{
+		Payload: &enginev1.ExecutionPayloadElectra{
+			ParentHash: make([]byte, 32),
+			BlockHash:  make([]byte, 32),
+		},
+		BeaconBlockRoot:    service.originBlockRoot[:],
+		BlobKzgCommitments: make([][]byte, 0),
+		StateRoot:          make([]byte, 32),
+	}
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	das := &das.MockAvailabilityStore{}
+
+	blockHeader := post.LatestBlockHeader()
+	prevStateRoot, err := post.HashTreeRoot(ctx)
+	require.NoError(t, err)
+	blockHeader.StateRoot = prevStateRoot[:]
+	require.NoError(t, post.SetLatestBlockHeader(blockHeader))
+	stRoot, err := post.HashTreeRoot(ctx)
+	require.NoError(t, err)
+	p.StateRoot = stRoot[:]
+	engine := &mockExecution.EngineClient{}
+	service.cfg.ExecutionEngineCaller = engine
+	require.NoError(t, service.ReceiveExecutionPayloadEnvelope(ctx, e, das))
+}

beacon-chain/blockchain/receive_payload_attestation_message.go

@@ -0,0 +1,33 @@
+package blockchain
+
+import (
+	"context"
+	"slices"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+)
+
+func (s *Service) ReceivePayloadAttestationMessage(ctx context.Context, a *eth.PayloadAttestationMessage) error {
+	if err := helpers.ValidateNilPayloadAttestationMessage(a); err != nil {
+		return err
+	}
+	root := [32]byte(a.Data.BeaconBlockRoot)
+	st, err := s.HeadStateReadOnly(ctx)
+	if err != nil {
+		return err
+	}
+	ptc, err := helpers.GetPayloadTimelinessCommittee(ctx, st, a.Data.Slot)
+	if err != nil {
+		return err
+	}
+	idx := slices.Index(ptc, a.ValidatorIndex)
+	if idx == -1 {
+		return errInvalidValidatorIndex
+	}
+	if s.cfg.PayloadAttestationCache.Seen(root, uint64(primitives.ValidatorIndex(idx))) {
+		return nil
+	}
+	return s.cfg.PayloadAttestationCache.Add(a, uint64(idx))
+}

beacon-chain/blockchain/service.go

@@ -65,6 +65,7 @@ type Service struct {
 	syncComplete                  chan struct{}
 	blobNotifiers                 *blobNotifierMap
 	blockBeingSynced              *currentlySyncingBlock
+	payloadBeingSynced            *currentlySyncingPayload
 	blobStorage                   *filesystem.BlobStorage
 	lastPublishedLightClientEpoch primitives.Epoch
 }
@@ -75,6 +76,8 @@ type config struct {
 	ChainStartFetcher       execution.ChainStartFetcher
 	BeaconDB                db.HeadAccessDatabase
 	DepositCache            cache.DepositCache
+	PayloadAttestationCache *cache.PayloadAttestationCache
+	PayloadEnvelopeCache    *sync.Map
 	PayloadIDCache          *cache.PayloadIDCache
 	TrackedValidatorsCache  *cache.TrackedValidatorsCache
 	AttPool                 attestations.Pool
@@ -179,6 +182,7 @@ func NewService(ctx context.Context, opts ...Option) (*Service, error) {
 		blobNotifiers:        bn,
 		cfg:                  &config{},
 		blockBeingSynced:     &currentlySyncingBlock{roots: make(map[[32]byte]struct{})},
+		payloadBeingSynced:   &currentlySyncingPayload{roots: make(map[[32]byte]primitives.PTCStatus)},
 	}
 	for _, opt := range opts {
 		if err := opt(srv); err != nil {
@@ -544,7 +548,7 @@ func (s *Service) saveGenesisData(ctx context.Context, genesisState state.Beacon
 // 2.) Check DB.
 // Checking 1.) is ten times faster than checking 2.)
 // this function requires a lock in forkchoice
-func (s *Service) hasBlock(ctx context.Context, root [32]byte) bool {
+func (s *Service) chainHasBlock(ctx context.Context, root [32]byte) bool {
 	if s.cfg.ForkChoiceStore.HasNode(root) {
 		return true
 	}

beacon-chain/blockchain/service_test.go

@@ -382,8 +382,8 @@ func TestHasBlock_ForkChoiceAndDB_DoublyLinkedTree(t *testing.T) {
 	require.NoError(t, err)
 	require.NoError(t, s.cfg.ForkChoiceStore.InsertNode(ctx, beaconState, r))
 
-	assert.Equal(t, false, s.hasBlock(ctx, [32]byte{}), "Should not have block")
-	assert.Equal(t, true, s.hasBlock(ctx, r), "Should have block")
+	assert.Equal(t, false, s.chainHasBlock(ctx, [32]byte{}), "Should not have block")
+	assert.Equal(t, true, s.chainHasBlock(ctx, r), "Should have block")
 }
 
 func TestServiceStop_SaveCachedBlocks(t *testing.T) {

beacon-chain/blockchain/testing/BUILD.bazel

@@ -3,7 +3,10 @@ load("@prysm//tools/go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     testonly = True,
-    srcs = ["mock.go"],
+    srcs = [
+        "mock.go",
+        "mock_epbs.go",
+    ],
     importpath = "github.com/prysmaticlabs/prysm/v5/beacon-chain/blockchain/testing",
     visibility = [
         "//beacon-chain:__subpackages__",

beacon-chain/blockchain/testing/mock.go

@@ -37,44 +37,50 @@ var ErrNilState = errors.New("nil state")
 
 // ChainService defines the mock interface for testing
 type ChainService struct {
-	NotFinalized                bool
-	Optimistic                  bool
-	ValidAttestation            bool
-	ValidatorsRoot              [32]byte
-	PublicKey                   [fieldparams.BLSPubkeyLength]byte
-	FinalizedCheckPoint         *ethpb.Checkpoint
-	CurrentJustifiedCheckPoint  *ethpb.Checkpoint
-	PreviousJustifiedCheckPoint *ethpb.Checkpoint
-	Slot                        *primitives.Slot // Pointer because 0 is a useful value, so checking against it can be incorrect.
-	Balance                     *precompute.Balance
-	CanonicalRoots              map[[32]byte]bool
-	Fork                        *ethpb.Fork
-	ETH1Data                    *ethpb.Eth1Data
-	InitSyncBlockRoots          map[[32]byte]bool
-	DB                          db.Database
-	State                       state.BeaconState
-	Block                       interfaces.ReadOnlySignedBeaconBlock
-	VerifyBlkDescendantErr      error
-	stateNotifier               statefeed.Notifier
-	BlocksReceived              []interfaces.ReadOnlySignedBeaconBlock
-	SyncCommitteeIndices        []primitives.CommitteeIndex
-	blockNotifier               blockfeed.Notifier
-	opNotifier                  opfeed.Notifier
-	Root                        []byte
-	SyncCommitteeDomain         []byte
-	SyncSelectionProofDomain    []byte
-	SyncContributionProofDomain []byte
-	SyncCommitteePubkeys        [][]byte
-	Genesis                     time.Time
-	ForkChoiceStore             forkchoice.ForkChoicer
-	ReceiveBlockMockErr         error
-	OptimisticCheckRootReceived [32]byte
-	FinalizedRoots              map[[32]byte]bool
-	OptimisticRoots             map[[32]byte]bool
-	BlockSlot                   primitives.Slot
-	SyncingRoot                 [32]byte
-	Blobs                       []blocks.VerifiedROBlob
-	TargetRoot                  [32]byte
+	NotFinalized                        bool
+	Optimistic                          bool
+	ValidAttestation                    bool
+	ValidatorsRoot                      [32]byte
+	PublicKey                           [fieldparams.BLSPubkeyLength]byte
+	FinalizedCheckPoint                 *ethpb.Checkpoint
+	CurrentJustifiedCheckPoint          *ethpb.Checkpoint
+	PreviousJustifiedCheckPoint         *ethpb.Checkpoint
+	Slot                                *primitives.Slot // Pointer because 0 is a useful value, so checking against it can be incorrect.
+	Balance                             *precompute.Balance
+	CanonicalRoots                      map[[32]byte]bool
+	Fork                                *ethpb.Fork
+	ETH1Data                            *ethpb.Eth1Data
+	InitSyncBlockRoots                  map[[32]byte]bool
+	DB                                  db.Database
+	State                               state.BeaconState
+	Block                               interfaces.ReadOnlySignedBeaconBlock
+	ExecutionPayloadEnvelope            interfaces.ROExecutionPayloadEnvelope
+	VerifyBlkDescendantErr              error
+	stateNotifier                       statefeed.Notifier
+	BlocksReceived                      []interfaces.ReadOnlySignedBeaconBlock
+	SyncCommitteeIndices                []primitives.CommitteeIndex
+	blockNotifier                       blockfeed.Notifier
+	opNotifier                          opfeed.Notifier
+	Root                                []byte
+	SyncCommitteeDomain                 []byte
+	SyncSelectionProofDomain            []byte
+	SyncContributionProofDomain         []byte
+	SyncCommitteePubkeys                [][]byte
+	Genesis                             time.Time
+	ForkChoiceStore                     forkchoice.ForkChoicer
+	ReceiveBlockMockErr                 error
+	ReceiveEnvelopeMockErr              error
+	OptimisticCheckRootReceived         [32]byte
+	FinalizedRoots                      map[[32]byte]bool
+	OptimisticRoots                     map[[32]byte]bool
+	BlockSlot                           primitives.Slot
+	SyncingRoot                         [32]byte
+	Blobs                               []blocks.VerifiedROBlob
+	TargetRoot                          [32]byte
+	HighestReceivedSlot                 primitives.Slot
+	HighestReceivedRoot                 [32]byte
+	PayloadStatus                       primitives.PTCStatus
+	ReceivePayloadAttestationMessageErr error
 }
 
 func (s *ChainService) Ancestor(ctx context.Context, root []byte, slot primitives.Slot) ([]byte, error) {
@@ -567,12 +573,12 @@ func (s *ChainService) ReceivedBlocksLastEpoch() (uint64, error) {
 	return 0, nil
 }
 
-// HighestReceivedBlockSlot mocks the same method in the chain service
-func (s *ChainService) HighestReceivedBlockSlot() primitives.Slot {
+// HighestReceivedBlockSlotRoot mocks the same method in the chain service
+func (s *ChainService) HighestReceivedBlockSlotRoot() (primitives.Slot, [32]byte) {
 	if s.ForkChoiceStore != nil {
-		return s.ForkChoiceStore.HighestReceivedBlockSlot()
+		return s.ForkChoiceStore.HighestReceivedBlockSlotRoot()
 	}
-	return 0
+	return s.HighestReceivedSlot, s.HighestReceivedRoot
 }
 
 // InsertNode mocks the same method in the chain service
@@ -632,3 +638,17 @@ func (c *ChainService) ReceiveBlob(_ context.Context, b blocks.VerifiedROBlob) e
 func (c *ChainService) TargetRootForEpoch(_ [32]byte, _ primitives.Epoch) ([32]byte, error) {
 	return c.TargetRoot, nil
 }
+
+// HashInForkchoice mocks the same method in the chain service
+func (c *ChainService) HashInForkchoice([32]byte) bool {
+	return false
+}
+
+// ReceivePayloadAttestationMessage mocks the same method in the chain service
+func (c *ChainService) ReceivePayloadAttestationMessage(_ context.Context, _ *ethpb.PayloadAttestationMessage) error {
+	return c.ReceivePayloadAttestationMessageErr
+}
+
+func (c *ChainService) GetPTCVote(root [32]byte) primitives.PTCStatus {
+	return c.PayloadStatus
+}

beacon-chain/blockchain/testing/mock_epbs.go

@@ -0,0 +1,25 @@
+package testing
+
+import (
+	"context"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/das"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+)
+
+// ReceiveExecutionPayloadEnvelope mocks the  method in chain service.
+func (s *ChainService) ReceiveExecutionPayloadEnvelope(ctx context.Context, env interfaces.ROExecutionPayloadEnvelope, _ das.AvailabilityStore) error {
+	if s.ReceiveBlockMockErr != nil {
+		return s.ReceiveBlockMockErr
+	}
+	if s.State == nil {
+		return ErrNilState
+	}
+	if s.State.Slot() == env.Slot() {
+		if err := s.State.SetLatestFullSlot(s.State.Slot()); err != nil {
+			return err
+		}
+	}
+	s.ExecutionPayloadEnvelope = env
+	return nil
+}

beacon-chain/builder/BUILD.bazel

@@ -19,6 +19,7 @@ go_library(
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//monitoring/tracing:go_default_library",
+        "//monitoring/tracing/trace:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
@@ -26,7 +27,6 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@com_github_urfave_cli_v2//:go_default_library",
-        "@io_opencensus_go//trace:go_default_library",
     ],
 )
 

beacon-chain/builder/service.go

@@ -14,10 +14,10 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	v1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	log "github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
 )
 
 // ErrNoBuilder is used when builder endpoint is not configured.

beacon-chain/cache/BUILD.bazel

@@ -15,11 +15,13 @@ go_library(
         "doc.go",
         "error.go",
         "interfaces.go",
+        "payload_attestation.go",
         "payload_id.go",
         "proposer_indices.go",
         "proposer_indices_disabled.go",  # keep
         "proposer_indices_type.go",
         "registration.go",
+        "signed_execution_header.go",
         "skip_slot_cache.go",
         "subnet_ids.go",
         "sync_committee.go",
@@ -42,10 +44,13 @@ go_library(
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
+        "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
         "//crypto/rand:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
+        "//monitoring/tracing/trace:go_default_library",
+        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//runtime/version:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
@@ -56,7 +61,6 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@io_k8s_client_go//tools/cache:go_default_library",
-        "@io_opencensus_go//trace:go_default_library",
     ],
 )
 
@@ -70,10 +74,12 @@ go_test(
         "checkpoint_state_test.go",
         "committee_fuzz_test.go",
         "committee_test.go",
+        "payload_attestation_test.go",
         "payload_id_test.go",
         "private_access_test.go",
         "proposer_indices_test.go",
         "registration_test.go",
+        "signed_execution_header_test.go",
         "skip_slot_cache_test.go",
         "subnet_ids_test.go",
         "sync_committee_head_state_test.go",
@@ -88,7 +94,9 @@ go_test(
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//crypto/bls:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",

beacon-chain/cache/common.go

@@ -17,6 +17,6 @@ func trim(queue *cache.FIFO, maxSize uint64) {
 }
 
 // popProcessNoopFunc is a no-op function that never returns an error.
-func popProcessNoopFunc(_ interface{}) error {
+func popProcessNoopFunc(_ interface{}, _ bool) error {
 	return nil
 }

beacon-chain/cache/depositsnapshot/BUILD.bazel

@@ -19,6 +19,7 @@ go_library(
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
+        "//monitoring/tracing/trace:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
@@ -26,7 +27,6 @@ go_library(
         "@com_github_prometheus_client_golang//prometheus/promauto:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@com_github_wealdtech_go_bytesutil//:go_default_library",
-        "@io_opencensus_go//trace:go_default_library",
     ],
 )
 

beacon-chain/cache/depositsnapshot/deposit_fetcher.go

@@ -10,10 +10,10 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/cache"
 	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/sirupsen/logrus"
 	"github.com/wealdtech/go-bytesutil"
-	"go.opencensus.io/trace"
 )
 
 var (
@@ -241,7 +241,7 @@ func (c *Cache) InsertPendingDeposit(ctx context.Context, d *ethpb.Deposit, bloc
 	c.pendingDeposits = append(c.pendingDeposits,
 		&ethpb.DepositContainer{Deposit: d, Eth1BlockHeight: blockNum, Index: index, DepositRoot: depositRoot[:]})
 	pendingDepositsCount.Set(float64(len(c.pendingDeposits)))
-	span.AddAttributes(trace.Int64Attribute("count", int64(len(c.pendingDeposits))))
+	span.SetAttributes(trace.Int64Attribute("count", int64(len(c.pendingDeposits))))
 }
 
 // Deposits returns the cached internal deposit tree.
@@ -304,7 +304,7 @@ func (c *Cache) PendingContainers(ctx context.Context, untilBlk *big.Int) []*eth
 		return depositCntrs[i].Index < depositCntrs[j].Index
 	})
 
-	span.AddAttributes(trace.Int64Attribute("count", int64(len(depositCntrs))))
+	span.SetAttributes(trace.Int64Attribute("count", int64(len(depositCntrs))))
 
 	return depositCntrs
 }

beacon-chain/cache/depositsnapshot/deposit_inserter.go

@@ -10,9 +10,9 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
 )
 
 var (

beacon-chain/cache/payload_attestation.go

@@ -0,0 +1,132 @@
+package cache
+
+import (
+	"errors"
+	"sync"
+
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+)
+
+var errNilPayloadAttestationMessage = errors.New("nil Payload Attestation Message")
+
+// PayloadAttestationCache keeps a map of all the PTC votes that were seen,
+// already aggregated. The key is the beacon block root.
+type PayloadAttestationCache struct {
+	root         [32]byte
+	attestations [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation
+	sync.Mutex
+}
+
+// Seen returns true if a vote for the given Beacon Block Root has already been processed
+// for this Payload Timeliness Committee index. This will return true even if
+// the Payload status differs.
+func (p *PayloadAttestationCache) Seen(root [32]byte, idx uint64) bool {
+	p.Lock()
+	defer p.Unlock()
+	if p.root != root {
+		return false
+	}
+	for _, agg := range p.attestations {
+		if agg == nil {
+			continue
+		}
+		if agg.AggregationBits.BitAt(idx) {
+			return true
+		}
+	}
+	return false
+}
+
+// messageToPayloadAttestation creates a PayloadAttestation with a single
+// aggregated bit from the passed PayloadAttestationMessage
+func messageToPayloadAttestation(att *eth.PayloadAttestationMessage, idx uint64) *eth.PayloadAttestation {
+	bits := primitives.NewPayloadAttestationAggregationBits()
+	bits.SetBitAt(idx, true)
+	data := &eth.PayloadAttestationData{
+		BeaconBlockRoot: bytesutil.SafeCopyBytes(att.Data.BeaconBlockRoot),
+		Slot:            att.Data.Slot,
+		PayloadStatus:   att.Data.PayloadStatus,
+	}
+	return &eth.PayloadAttestation{
+		AggregationBits: bits,
+		Data:            data,
+		Signature:       bytesutil.SafeCopyBytes(att.Signature),
+	}
+}
+
+// aggregateSigFromMessage returns the aggregated signature from a Payload
+// Attestation by adding the passed signature in the PayloadAttestationMessage,
+// no signature validation is performed.
+func aggregateSigFromMessage(aggregated *eth.PayloadAttestation, message *eth.PayloadAttestationMessage) ([]byte, error) {
+	aggSig, err := bls.SignatureFromBytesNoValidation(aggregated.Signature)
+	if err != nil {
+		return nil, err
+	}
+	sig, err := bls.SignatureFromBytesNoValidation(message.Signature)
+	if err != nil {
+		return nil, err
+	}
+	return bls.AggregateSignatures([]bls.Signature{aggSig, sig}).Marshal(), nil
+}
+
+// Add adds a PayloadAttestationMessage to the internal cache of aggregated
+// PayloadAttestations.
+// If the index has already been seen for this attestation status the function does nothing.
+// If the root is not the cached root, the function will clear the previous cache
+// This function assumes that the message has already been validated. In
+// particular that the signature is valid and that the block root corresponds to
+// the given slot in the attestation data.
+func (p *PayloadAttestationCache) Add(att *eth.PayloadAttestationMessage, idx uint64) error {
+	if att == nil || att.Data == nil || att.Data.BeaconBlockRoot == nil {
+		return errNilPayloadAttestationMessage
+	}
+	p.Lock()
+	defer p.Unlock()
+	root := [32]byte(att.Data.BeaconBlockRoot)
+	if p.root != root {
+		p.root = root
+		p.attestations = [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{}
+	}
+	agg := p.attestations[att.Data.PayloadStatus]
+	if agg == nil {
+		p.attestations[att.Data.PayloadStatus] = messageToPayloadAttestation(att, idx)
+		return nil
+	}
+	if agg.AggregationBits.BitAt(idx) {
+		return nil
+	}
+	sig, err := aggregateSigFromMessage(agg, att)
+	if err != nil {
+		return err
+	}
+	agg.Signature = sig
+	agg.AggregationBits.SetBitAt(idx, true)
+	return nil
+}
+
+// Get returns the aggregated PayloadAttestation for the given root and status
+// if the root doesn't exist or status is invalid, the function returns nil.
+func (p *PayloadAttestationCache) Get(root [32]byte, status primitives.PTCStatus) *eth.PayloadAttestation {
+	p.Lock()
+	defer p.Unlock()
+
+	if p.root != root {
+		return nil
+	}
+	if status >= primitives.PAYLOAD_INVALID_STATUS {
+		return nil
+	}
+
+	return eth.CopyPayloadAttestation(p.attestations[status])
+}
+
+// Clear clears the internal map
+func (p *PayloadAttestationCache) Clear() {
+	p.Lock()
+	defer p.Unlock()
+	p.root = [32]byte{}
+	p.attestations = [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{}
+}

beacon-chain/cache/payload_attestation_test.go

@@ -0,0 +1,143 @@
+package cache
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestPayloadAttestationCache(t *testing.T) {
+	p := &PayloadAttestationCache{}
+
+	//Test Has seen
+	root := [32]byte{'r'}
+	idx := uint64(5)
+	require.Equal(t, false, p.Seen(root, idx))
+
+	// Test Add
+	msg := &eth.PayloadAttestationMessage{
+		Signature: bls.NewAggregateSignature().Marshal(),
+		Data: &eth.PayloadAttestationData{
+			BeaconBlockRoot: root[:],
+			Slot:            1,
+			PayloadStatus:   primitives.PAYLOAD_PRESENT,
+		},
+	}
+
+	// Add new root
+	require.NoError(t, p.Add(msg, idx))
+	require.Equal(t, true, p.Seen(root, idx))
+	require.Equal(t, root, p.root)
+	att := p.attestations[primitives.PAYLOAD_PRESENT]
+	indices := att.AggregationBits.BitIndices()
+	require.DeepEqual(t, []int{int(idx)}, indices)
+	singleSig := bytesutil.SafeCopyBytes(msg.Signature)
+	require.DeepEqual(t, singleSig, att.Signature)
+
+	// Test Seen
+	require.Equal(t, true, p.Seen(root, idx))
+	require.Equal(t, false, p.Seen(root, idx+1))
+
+	// Add another attestation on the same data
+	msg2 := &eth.PayloadAttestationMessage{
+		Signature: bls.NewAggregateSignature().Marshal(),
+		Data:      att.Data,
+	}
+	idx2 := uint64(7)
+	require.NoError(t, p.Add(msg2, idx2))
+	att = p.attestations[primitives.PAYLOAD_PRESENT]
+	indices = att.AggregationBits.BitIndices()
+	require.DeepEqual(t, []int{int(idx), int(idx2)}, indices)
+	require.DeepNotEqual(t, att.Signature, msg.Signature)
+
+	// Try again the same index
+	require.NoError(t, p.Add(msg2, idx2))
+	att2 := p.attestations[primitives.PAYLOAD_PRESENT]
+	indices = att.AggregationBits.BitIndices()
+	require.DeepEqual(t, []int{int(idx), int(idx2)}, indices)
+	require.DeepEqual(t, att, att2)
+
+	// Test Seen
+	require.Equal(t, true, p.Seen(root, idx2))
+	require.Equal(t, false, p.Seen(root, idx2+1))
+
+	// Add another payload status for a different payload status
+	msg3 := &eth.PayloadAttestationMessage{
+		Signature: bls.NewAggregateSignature().Marshal(),
+		Data: &eth.PayloadAttestationData{
+			BeaconBlockRoot: root[:],
+			Slot:            1,
+			PayloadStatus:   primitives.PAYLOAD_WITHHELD,
+		},
+	}
+	idx3 := uint64(17)
+
+	require.NoError(t, p.Add(msg3, idx3))
+	att3 := p.attestations[primitives.PAYLOAD_WITHHELD]
+	indices3 := att3.AggregationBits.BitIndices()
+	require.DeepEqual(t, []int{int(idx3)}, indices3)
+	require.DeepEqual(t, singleSig, att3.Signature)
+
+	// Add a different root
+	root2 := [32]byte{'s'}
+	msg.Data.BeaconBlockRoot = root2[:]
+	require.NoError(t, p.Add(msg, idx))
+	require.Equal(t, root2, p.root)
+	require.Equal(t, true, p.Seen(root2, idx))
+	require.Equal(t, false, p.Seen(root, idx))
+	att = p.attestations[primitives.PAYLOAD_PRESENT]
+	indices = att.AggregationBits.BitIndices()
+	require.DeepEqual(t, []int{int(idx)}, indices)
+}
+
+func TestPayloadAttestationCache_Get(t *testing.T) {
+	root := [32]byte{1, 2, 3}
+	wrongRoot := [32]byte{4, 5, 6}
+	status := primitives.PAYLOAD_PRESENT
+	invalidStatus := primitives.PAYLOAD_INVALID_STATUS
+
+	cache := &PayloadAttestationCache{
+		root: root,
+		attestations: [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{
+			{
+				Signature: []byte{1},
+			},
+			{
+				Signature: []byte{2},
+			},
+			{
+				Signature: []byte{3},
+			},
+		},
+	}
+
+	t.Run("valid root and status", func(t *testing.T) {
+		result := cache.Get(root, status)
+		require.NotNil(t, result, "Expected a non-nil result")
+		require.DeepEqual(t, cache.attestations[status], result)
+	})
+
+	t.Run("invalid root", func(t *testing.T) {
+		result := cache.Get(wrongRoot, status)
+		require.IsNil(t, result)
+	})
+
+	t.Run("status out of bound", func(t *testing.T) {
+		result := cache.Get(root, invalidStatus)
+		require.IsNil(t, result)
+	})
+
+	t.Run("no attestation", func(t *testing.T) {
+		emptyCache := &PayloadAttestationCache{
+			root:         root,
+			attestations: [primitives.PAYLOAD_INVALID_STATUS]*eth.PayloadAttestation{},
+		}
+
+		result := emptyCache.Get(root, status)
+		require.IsNil(t, result)
+	})
+}

beacon-chain/cache/registration.go

@@ -7,8 +7,8 @@ import (
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
-	"go.opencensus.io/trace"
 )
 
 // RegistrationCache is used to store the cached results of an Validator Registration request.

beacon-chain/cache/signed_execution_header.go

@@ -0,0 +1,76 @@
+package cache
+
+import (
+	"bytes"
+	"sync"
+
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+)
+
+// ExecutionPayloadHeaders is used  by the sync service to store signed execution payload headers after they pass validation,
+// and filter out subsequent headers with lower value.
+// The signed header from this cache could be used by the proposer when proposing the next slot.
+type ExecutionPayloadHeaders struct {
+	headers map[primitives.Slot][]*enginev1.SignedExecutionPayloadHeader
+	sync.RWMutex
+}
+
+func NewExecutionPayloadHeaders() *ExecutionPayloadHeaders {
+	return &ExecutionPayloadHeaders{
+		headers: make(map[primitives.Slot][]*enginev1.SignedExecutionPayloadHeader),
+	}
+}
+
+// SaveSignedExecutionPayloadHeader saves the signed execution payload header to the cache.
+// The cache stores headers for up to two slots. If the input slot is higher than the lowest slot
+// currently in the cache, the lowest slot is removed to make space for the new header.
+// Only the highest value header for a given parent block hash will be stored.
+// This function assumes caller already checks header's slot is current or next slot, it doesn't account for slot validation.
+func (c *ExecutionPayloadHeaders) SaveSignedExecutionPayloadHeader(header *enginev1.SignedExecutionPayloadHeader) {
+	c.Lock()
+	defer c.Unlock()
+
+	for s := range c.headers {
+		if s+1 < header.Message.Slot {
+			delete(c.headers, s)
+		}
+	}
+
+	// Add or update the header in the map
+	if _, ok := c.headers[header.Message.Slot]; !ok {
+		c.headers[header.Message.Slot] = []*enginev1.SignedExecutionPayloadHeader{header}
+	} else {
+		found := false
+		for i, h := range c.headers[header.Message.Slot] {
+			if bytes.Equal(h.Message.ParentBlockHash, header.Message.ParentBlockHash) && bytes.Equal(h.Message.ParentBlockRoot, header.Message.ParentBlockRoot) {
+				if header.Message.Value > h.Message.Value {
+					c.headers[header.Message.Slot][i] = header
+				}
+				found = true
+				break
+			}
+		}
+		if !found {
+			c.headers[header.Message.Slot] = append(c.headers[header.Message.Slot], header)
+		}
+	}
+}
+
+// SignedExecutionPayloadHeader returns the signed payload header for the given slot and parent block hash and block root.
+// Returns nil if the header is not found.
+// This should be used when the caller wants the header to match parent block hash and parent block root such as proposer choosing a header to propose.
+func (c *ExecutionPayloadHeaders) SignedExecutionPayloadHeader(slot primitives.Slot, parentBlockHash []byte, parentBlockRoot []byte) *enginev1.SignedExecutionPayloadHeader {
+	c.RLock()
+	defer c.RUnlock()
+
+	if headers, ok := c.headers[slot]; ok {
+		for _, header := range headers {
+			if bytes.Equal(header.Message.ParentBlockHash, parentBlockHash) && bytes.Equal(header.Message.ParentBlockRoot, parentBlockRoot) {
+				return header
+			}
+		}
+	}
+
+	return nil
+}

beacon-chain/cache/signed_execution_header_test.go

@@ -0,0 +1,243 @@
+package cache
+
+import (
+	"testing"
+
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func Test_SaveSignedExecutionPayloadHeader(t *testing.T) {
+	t.Run("First header should be added to cache", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header)
+		require.Equal(t, 1, len(c.headers))
+		require.Equal(t, header, c.headers[1][0])
+	})
+
+	t.Run("Second header with higher slot should be added, and both slots should be in cache", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+		require.Equal(t, 2, len(c.headers))
+		require.Equal(t, header1, c.headers[1][0])
+		require.Equal(t, header2, c.headers[2][0])
+	})
+
+	t.Run("Third header with higher slot should replace the oldest slot", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           100,
+			},
+		}
+		header3 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            3,
+				ParentBlockHash: []byte("parent3"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+		c.SaveSignedExecutionPayloadHeader(header3)
+		require.Equal(t, 2, len(c.headers))
+		require.Equal(t, header2, c.headers[2][0])
+		require.Equal(t, header3, c.headers[3][0])
+	})
+
+	t.Run("Header with same slot but higher value should replace the existing one", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           200,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+		require.Equal(t, 1, len(c.headers[2]))
+		require.Equal(t, header2, c.headers[2][0])
+	})
+
+	t.Run("Header with different parent block hash should be appended to the same slot", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           200,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+		require.Equal(t, 2, len(c.headers[2]))
+		require.Equal(t, header1, c.headers[2][0])
+		require.Equal(t, header2, c.headers[2][1])
+	})
+}
+
+func TestSignedExecutionPayloadHeader(t *testing.T) {
+	t.Run("Return header when slot and parentBlockHash match", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				ParentBlockRoot: []byte("root1"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header)
+		result := c.SignedExecutionPayloadHeader(1, []byte("parent1"), []byte("root1"))
+		require.NotNil(t, result)
+		require.Equal(t, header, result)
+	})
+
+	t.Run("Return nil when no matching slot and parentBlockHash", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				ParentBlockRoot: []byte("root1"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header)
+		result := c.SignedExecutionPayloadHeader(2, []byte("parent2"), []byte("root1"))
+		require.IsNil(t, result)
+	})
+
+	t.Run("Return nil when no matching slot and parentBlockRoot", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				ParentBlockRoot: []byte("root1"),
+				Value:           100,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header)
+		result := c.SignedExecutionPayloadHeader(2, []byte("parent1"), []byte("root2"))
+		require.IsNil(t, result)
+	})
+
+	t.Run("Return header when there are two slots in the cache and a match is found", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           200,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+
+		// Check for the first header
+		result1 := c.SignedExecutionPayloadHeader(1, []byte("parent1"), []byte{})
+		require.NotNil(t, result1)
+		require.Equal(t, header1, result1)
+
+		// Check for the second header
+		result2 := c.SignedExecutionPayloadHeader(2, []byte("parent2"), []byte{})
+		require.NotNil(t, result2)
+		require.Equal(t, header2, result2)
+	})
+
+	t.Run("Return nil when slot is evicted from cache", func(t *testing.T) {
+		c := NewExecutionPayloadHeaders()
+		header1 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            1,
+				ParentBlockHash: []byte("parent1"),
+				Value:           100,
+			},
+		}
+		header2 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            2,
+				ParentBlockHash: []byte("parent2"),
+				Value:           200,
+			},
+		}
+		header3 := &enginev1.SignedExecutionPayloadHeader{
+			Message: &enginev1.ExecutionPayloadHeaderEPBS{
+				Slot:            3,
+				ParentBlockHash: []byte("parent3"),
+				Value:           300,
+			},
+		}
+		c.SaveSignedExecutionPayloadHeader(header1)
+		c.SaveSignedExecutionPayloadHeader(header2)
+		c.SaveSignedExecutionPayloadHeader(header3)
+
+		// The first slot should be evicted, so result should be nil
+		result := c.SignedExecutionPayloadHeader(1, []byte("parent1"), []byte{})
+		require.IsNil(t, result)
+
+		// The second slot should still be present
+		result = c.SignedExecutionPayloadHeader(2, []byte("parent2"), []byte{})
+		require.NotNil(t, result)
+		require.Equal(t, header2, result)
+
+		// The third slot should be present
+		result = c.SignedExecutionPayloadHeader(3, []byte("parent3"), []byte{})
+		require.NotNil(t, result)
+		require.Equal(t, header3, result)
+	})
+}

beacon-chain/cache/skip_slot_cache.go

@@ -11,7 +11,7 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	lruwrpr "github.com/prysmaticlabs/prysm/v5/cache/lru"
-	"go.opencensus.io/trace"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 )
 
 var (
@@ -92,17 +92,17 @@ func (c *SkipSlotCache) Get(ctx context.Context, r [32]byte) (state.BeaconState,
 		delay *= delayFactor
 		delay = math.Min(delay, maxDelay)
 	}
-	span.AddAttributes(trace.BoolAttribute("inProgress", inProgress))
+	span.SetAttributes(trace.BoolAttribute("inProgress", inProgress))
 
 	item, exists := c.cache.Get(r)
 
 	if exists && item != nil {
 		skipSlotCacheHit.Inc()
-		span.AddAttributes(trace.BoolAttribute("hit", true))
+		span.SetAttributes(trace.BoolAttribute("hit", true))
 		return item.(state.BeaconState).Copy(), nil
 	}
 	skipSlotCacheMiss.Inc()
-	span.AddAttributes(trace.BoolAttribute("hit", false))
+	span.SetAttributes(trace.BoolAttribute("hit", false))
 	return nil, nil
 }
 

beacon-chain/core/blocks/BUILD.bazel

@@ -107,6 +107,7 @@ go_test(
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
+        "//testing/util/random:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_google_gofuzz//:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",

beacon-chain/core/blocks/genesis.go

@@ -12,6 +12,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/encoding/ssz"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )
@@ -213,6 +214,47 @@ func NewGenesisBlockForState(ctx context.Context, st state.BeaconState) (interfa
 					},
 					BlsToExecutionChanges: make([]*ethpb.SignedBLSToExecutionChange, 0),
 					BlobKzgCommitments:    make([][]byte, 0),
+					ExecutionRequests: &enginev1.ExecutionRequests{
+						Withdrawals:    make([]*enginev1.WithdrawalRequest, 0),
+						Deposits:       make([]*enginev1.DepositRequest, 0),
+						Consolidations: make([]*enginev1.ConsolidationRequest, 0),
+					},
+				},
+			},
+			Signature: params.BeaconConfig().EmptySignature[:],
+		})
+	case *ethpb.BeaconStateEPBS:
+		kzgs := make([][]byte, 0)
+		kzgRoot, err := ssz.KzgCommitmentsRoot(kzgs)
+		if err != nil {
+			return nil, err
+		}
+		return blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockEpbs{
+			Block: &ethpb.BeaconBlockEpbs{
+				ParentRoot: params.BeaconConfig().ZeroHash[:],
+				StateRoot:  root[:],
+				Body: &ethpb.BeaconBlockBodyEpbs{
+					RandaoReveal: make([]byte, 96),
+					Eth1Data: &ethpb.Eth1Data{
+						DepositRoot: make([]byte, 32),
+						BlockHash:   make([]byte, 32),
+					},
+					Graffiti: make([]byte, 32),
+					SyncAggregate: &ethpb.SyncAggregate{
+						SyncCommitteeBits:      make([]byte, fieldparams.SyncCommitteeLength/8),
+						SyncCommitteeSignature: make([]byte, fieldparams.BLSSignatureLength),
+					},
+					SignedExecutionPayloadHeader: &enginev1.SignedExecutionPayloadHeader{
+						Message: &enginev1.ExecutionPayloadHeaderEPBS{
+							ParentBlockHash:        make([]byte, 32),
+							ParentBlockRoot:        make([]byte, 32),
+							BlockHash:              make([]byte, 32),
+							BlobKzgCommitmentsRoot: kzgRoot[:],
+						},
+						Signature: make([]byte, 96),
+					},
+					BlsToExecutionChanges: make([]*ethpb.SignedBLSToExecutionChange, 0),
+					PayloadAttestations:   make([]*ethpb.PayloadAttestation, 0),
 				},
 			},
 			Signature: params.BeaconConfig().EmptySignature[:],

beacon-chain/core/blocks/payload.go

@@ -239,12 +239,47 @@ func verifyBlobCommitmentCount(body interfaces.ReadOnlyBeaconBlockBody) error {
 // GetBlockPayloadHash returns the hash of the execution payload of the block
 func GetBlockPayloadHash(blk interfaces.ReadOnlyBeaconBlock) ([32]byte, error) {
 	var payloadHash [32]byte
-	if IsPreBellatrixVersion(blk.Version()) {
-		return payloadHash, nil
+	if blk.Version() >= version.EPBS {
+		header, err := blk.Body().SignedExecutionPayloadHeader()
+		if err != nil {
+			return payloadHash, err
+		}
+		payload, err := header.Header()
+		if err != nil {
+			return payloadHash, err
+		}
+		return payload.BlockHash(), nil
 	}
-	payload, err := blk.Body().Execution()
-	if err != nil {
-		return payloadHash, err
+	if blk.Version() >= version.Bellatrix {
+		payload, err := blk.Body().Execution()
+		if err != nil {
+			return payloadHash, err
+		}
+		return bytesutil.ToBytes32(payload.BlockHash()), nil
 	}
-	return bytesutil.ToBytes32(payload.BlockHash()), nil
+	return payloadHash, nil
+}
+
+// GetBlockParentHash returns the hash of the parent execution payload
+func GetBlockParentHash(blk interfaces.ReadOnlyBeaconBlock) ([32]byte, error) {
+	var parentHash [32]byte
+	if blk.Version() >= version.EPBS {
+		header, err := blk.Body().SignedExecutionPayloadHeader()
+		if err != nil {
+			return parentHash, err
+		}
+		payload, err := header.Header()
+		if err != nil {
+			return parentHash, err
+		}
+		return payload.ParentBlockHash(), nil
+	}
+	if blk.Version() >= version.Bellatrix {
+		payload, err := blk.Body().Execution()
+		if err != nil {
+			return parentHash, err
+		}
+		return bytesutil.ToBytes32(payload.ParentHash()), nil
+	}
+	return parentHash, nil
 }

beacon-chain/core/blocks/withdrawals.go

@@ -14,8 +14,8 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
 	"github.com/prysmaticlabs/prysm/v5/crypto/hash"
-	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v5/encoding/ssz"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 )
@@ -115,15 +115,97 @@ func ValidateBLSToExecutionChange(st state.ReadOnlyBeaconState, signed *ethpb.Si
 	return val, nil
 }
 
+func checkWithdrawalsAgainstPayload(
+	executionData interfaces.ExecutionData,
+	numExpected int,
+	expectedRoot [32]byte,
+) error {
+	var wdRoot [32]byte
+	if executionData.IsBlinded() {
+		r, err := executionData.WithdrawalsRoot()
+		if err != nil {
+			return errors.Wrap(err, "could not get withdrawals root")
+		}
+		copy(wdRoot[:], r)
+	} else {
+		wds, err := executionData.Withdrawals()
+		if err != nil {
+			return errors.Wrap(err, "could not get withdrawals")
+		}
+
+		if len(wds) != numExpected {
+			return fmt.Errorf("execution payload header has %d withdrawals when %d were expected", len(wds), numExpected)
+		}
+
+		wdRoot, err = ssz.WithdrawalSliceRoot(wds, fieldparams.MaxWithdrawalsPerPayload)
+		if err != nil {
+			return errors.Wrap(err, "could not get withdrawals root")
+		}
+	}
+	if expectedRoot != wdRoot {
+		return fmt.Errorf("expected withdrawals root %#x, got %#x", expectedRoot, wdRoot)
+	}
+	return nil
+}
+
+func processWithdrawalStateTransition(
+	st state.BeaconState,
+	expectedWithdrawals []*enginev1.Withdrawal,
+	partialWithdrawalsCount uint64,
+) (err error) {
+	for _, withdrawal := range expectedWithdrawals {
+		err := helpers.DecreaseBalance(st, withdrawal.ValidatorIndex, withdrawal.Amount)
+		if err != nil {
+			return errors.Wrap(err, "could not decrease balance")
+		}
+	}
+	if st.Version() >= version.Electra {
+		if err := st.DequeuePartialWithdrawals(partialWithdrawalsCount); err != nil {
+			return fmt.Errorf("unable to dequeue partial withdrawals from state: %w", err)
+		}
+	}
+
+	if len(expectedWithdrawals) > 0 {
+		if err := st.SetNextWithdrawalIndex(expectedWithdrawals[len(expectedWithdrawals)-1].Index + 1); err != nil {
+			return errors.Wrap(err, "could not set next withdrawal index")
+		}
+	}
+	var nextValidatorIndex primitives.ValidatorIndex
+	if uint64(len(expectedWithdrawals)) < params.BeaconConfig().MaxWithdrawalsPerPayload {
+		nextValidatorIndex, err = st.NextWithdrawalValidatorIndex()
+		if err != nil {
+			return errors.Wrap(err, "could not get next withdrawal validator index")
+		}
+		nextValidatorIndex += primitives.ValidatorIndex(params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep)
+		nextValidatorIndex = nextValidatorIndex % primitives.ValidatorIndex(st.NumValidators())
+	} else {
+		nextValidatorIndex = expectedWithdrawals[len(expectedWithdrawals)-1].ValidatorIndex + 1
+		if nextValidatorIndex == primitives.ValidatorIndex(st.NumValidators()) {
+			nextValidatorIndex = 0
+		}
+	}
+	if err := st.SetNextWithdrawalValidatorIndex(nextValidatorIndex); err != nil {
+		return errors.Wrap(err, "could not set next withdrawal validator index")
+	}
+	return nil
+}
+
 // ProcessWithdrawals processes the validator withdrawals from the provided execution payload
 // into the beacon state.
 //
 // Spec pseudocode definition:
 //
 //	def process_withdrawals(state: BeaconState, payload: ExecutionPayload) -> None:
+//		if state.fork.current_version >= EIP7732_FORK_VERSION :
+//			if not is_parent_block_full(state): # [New in EIP-7732]
+//		 		return
+//
 //	    expected_withdrawals, partial_withdrawals_count = get_expected_withdrawals(state)  # [Modified in Electra:EIP7251]
 //
-//	    assert len(payload.withdrawals) == len(expected_withdrawals)
+//		if state.fork.current_version >= EIP7732_FORK_VERSION :
+//			state.latest_withdrawals_root = hash_tree_root(expected_withdrawals) # [New in EIP-7732]
+//		else :
+//	    	assert len(payload.withdrawals) == len(expected_withdrawals)
 //
 //	    for expected_withdrawal, withdrawal in zip(expected_withdrawals, payload.withdrawals):
 //	        assert withdrawal == expected_withdrawal
@@ -148,76 +230,39 @@ func ValidateBLSToExecutionChange(st state.ReadOnlyBeaconState, signed *ethpb.Si
 //	        next_validator_index = ValidatorIndex(next_index % len(state.validators))
 //	        state.next_withdrawal_validator_index = next_validator_index
 func ProcessWithdrawals(st state.BeaconState, executionData interfaces.ExecutionData) (state.BeaconState, error) {
+	if st.Version() >= version.EPBS {
+		IsParentBlockFull, err := st.IsParentBlockFull()
+		if err != nil {
+			return nil, errors.Wrap(err, "could not check if parent block is full")
+		}
+
+		if !IsParentBlockFull {
+			return nil, nil
+		}
+	}
+
 	expectedWithdrawals, partialWithdrawalsCount, err := st.ExpectedWithdrawals()
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get expected withdrawals")
 	}
 
-	var wdRoot [32]byte
-	if executionData.IsBlinded() {
-		r, err := executionData.WithdrawalsRoot()
-		if err != nil {
-			return nil, errors.Wrap(err, "could not get withdrawals root")
-		}
-		wdRoot = bytesutil.ToBytes32(r)
-	} else {
-		wds, err := executionData.Withdrawals()
-		if err != nil {
-			return nil, errors.Wrap(err, "could not get withdrawals")
-		}
-
-		if len(wds) != len(expectedWithdrawals) {
-			return nil, fmt.Errorf("execution payload header has %d withdrawals when %d were expected", len(wds), len(expectedWithdrawals))
-		}
-
-		wdRoot, err = ssz.WithdrawalSliceRoot(wds, fieldparams.MaxWithdrawalsPerPayload)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not get withdrawals root")
-		}
-	}
-
 	expectedRoot, err := ssz.WithdrawalSliceRoot(expectedWithdrawals, fieldparams.MaxWithdrawalsPerPayload)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get expected withdrawals root")
 	}
-	if expectedRoot != wdRoot {
-		return nil, fmt.Errorf("expected withdrawals root %#x, got %#x", expectedRoot, wdRoot)
-	}
 
-	for _, withdrawal := range expectedWithdrawals {
-		err := helpers.DecreaseBalance(st, withdrawal.ValidatorIndex, withdrawal.Amount)
+	if st.Version() >= version.EPBS {
+		err = st.SetLastWithdrawalsRoot(expectedRoot[:])
 		if err != nil {
-			return nil, errors.Wrap(err, "could not decrease balance")
+			return nil, errors.Wrap(err, "could not set withdrawals root")
 		}
-	}
-
-	if st.Version() >= version.Electra {
-		if err := st.DequeuePartialWithdrawals(partialWithdrawalsCount); err != nil {
-			return nil, fmt.Errorf("unable to dequeue partial withdrawals from state: %w", err)
-		}
-	}
-
-	if len(expectedWithdrawals) > 0 {
-		if err := st.SetNextWithdrawalIndex(expectedWithdrawals[len(expectedWithdrawals)-1].Index + 1); err != nil {
-			return nil, errors.Wrap(err, "could not set next withdrawal index")
-		}
-	}
-	var nextValidatorIndex primitives.ValidatorIndex
-	if uint64(len(expectedWithdrawals)) < params.BeaconConfig().MaxWithdrawalsPerPayload {
-		nextValidatorIndex, err = st.NextWithdrawalValidatorIndex()
-		if err != nil {
-			return nil, errors.Wrap(err, "could not get next withdrawal validator index")
-		}
-		nextValidatorIndex += primitives.ValidatorIndex(params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep)
-		nextValidatorIndex = nextValidatorIndex % primitives.ValidatorIndex(st.NumValidators())
 	} else {
-		nextValidatorIndex = expectedWithdrawals[len(expectedWithdrawals)-1].ValidatorIndex + 1
-		if nextValidatorIndex == primitives.ValidatorIndex(st.NumValidators()) {
-			nextValidatorIndex = 0
+		if err := checkWithdrawalsAgainstPayload(executionData, len(expectedWithdrawals), expectedRoot); err != nil {
+			return nil, err
 		}
 	}
-	if err := st.SetNextWithdrawalValidatorIndex(nextValidatorIndex); err != nil {
-		return nil, errors.Wrap(err, "could not set next withdrawal validator index")
+	if err := processWithdrawalStateTransition(st, expectedWithdrawals, partialWithdrawalsCount); err != nil {
+		return nil, err
 	}
 	return st, nil
 }

beacon-chain/core/blocks/withdrawals_test.go

@@ -22,6 +22,7 @@ import (
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util/random"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 )
 
@@ -1132,13 +1133,407 @@ func TestProcessWithdrawals(t *testing.T) {
 						checkPostState(t, test.Control, post)
 					}
 					params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = saved
-
 				})
 			}
 		})
 	}
 }
 
+func TestProcessWithdrawalsEPBS(t *testing.T) {
+	const (
+		currentEpoch             = primitives.Epoch(10)
+		epochInFuture            = primitives.Epoch(12)
+		epochInPast              = primitives.Epoch(8)
+		numValidators            = 128
+		notWithdrawableIndex     = 127
+		notPartiallyWithdrawable = 126
+		maxSweep                 = uint64(80)
+	)
+	maxEffectiveBalance := params.BeaconConfig().MaxEffectiveBalance
+
+	type args struct {
+		Name                            string
+		NextWithdrawalValidatorIndex    primitives.ValidatorIndex
+		NextWithdrawalIndex             uint64
+		FullWithdrawalIndices           []primitives.ValidatorIndex
+		PendingPartialWithdrawalIndices []primitives.ValidatorIndex
+		Withdrawals                     []*enginev1.Withdrawal
+		PendingPartialWithdrawals       []*ethpb.PendingPartialWithdrawal // Electra
+		LatestBlockHash                 []byte                            // EIP-7732
+	}
+	type control struct {
+		NextWithdrawalValidatorIndex primitives.ValidatorIndex
+		NextWithdrawalIndex          uint64
+		Balances                     map[uint64]uint64
+	}
+	type Test struct {
+		Args    args
+		Control control
+	}
+	executionAddress := func(i primitives.ValidatorIndex) []byte {
+		wc := make([]byte, 20)
+		wc[19] = byte(i)
+		return wc
+	}
+	withdrawalAmount := func(i primitives.ValidatorIndex) uint64 {
+		return maxEffectiveBalance + uint64(i)*100000
+	}
+	fullWithdrawal := func(i primitives.ValidatorIndex, idx uint64) *enginev1.Withdrawal {
+		return &enginev1.Withdrawal{
+			Index:          idx,
+			ValidatorIndex: i,
+			Address:        executionAddress(i),
+			Amount:         withdrawalAmount(i),
+		}
+	}
+	PendingPartialWithdrawal := func(i primitives.ValidatorIndex, idx uint64) *enginev1.Withdrawal {
+		return &enginev1.Withdrawal{
+			Index:          idx,
+			ValidatorIndex: i,
+			Address:        executionAddress(i),
+			Amount:         withdrawalAmount(i) - maxEffectiveBalance,
+		}
+	}
+	tests := []Test{
+		{
+			Args: args{
+				Name:                         "success no withdrawals",
+				NextWithdrawalValidatorIndex: 10,
+				NextWithdrawalIndex:          3,
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 90,
+				NextWithdrawalIndex:          3,
+			},
+		},
+		{
+			Args: args{
+				Name:                         "success one full withdrawal",
+				NextWithdrawalIndex:          3,
+				NextWithdrawalValidatorIndex: 5,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{70},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(70, 3),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 85,
+				NextWithdrawalIndex:          4,
+				Balances:                     map[uint64]uint64{70: 0},
+			},
+		},
+		{
+			Args: args{
+				Name:                            "success one partial withdrawal",
+				NextWithdrawalIndex:             21,
+				NextWithdrawalValidatorIndex:    120,
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{7},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(7, 21),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 72,
+				NextWithdrawalIndex:          22,
+				Balances:                     map[uint64]uint64{7: maxEffectiveBalance},
+			},
+		},
+		{
+			Args: args{
+				Name:                         "success many full withdrawals",
+				NextWithdrawalIndex:          22,
+				NextWithdrawalValidatorIndex: 4,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{7, 19, 28, 1},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(7, 22), fullWithdrawal(19, 23), fullWithdrawal(28, 24),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 84,
+				NextWithdrawalIndex:          25,
+				Balances:                     map[uint64]uint64{7: 0, 19: 0, 28: 0},
+			},
+		},
+		{
+			Args: args{
+				Name:                         "less than max sweep at end",
+				NextWithdrawalIndex:          22,
+				NextWithdrawalValidatorIndex: 4,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{80, 81, 82, 83},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(80, 22), fullWithdrawal(81, 23), fullWithdrawal(82, 24),
+					fullWithdrawal(83, 25),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 84,
+				NextWithdrawalIndex:          26,
+				Balances:                     map[uint64]uint64{80: 0, 81: 0, 82: 0, 83: 0},
+			},
+		},
+		{
+			Args: args{
+				Name:                         "less than max sweep and beginning",
+				NextWithdrawalIndex:          22,
+				NextWithdrawalValidatorIndex: 4,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{4, 5, 6},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(4, 22), fullWithdrawal(5, 23), fullWithdrawal(6, 24),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 84,
+				NextWithdrawalIndex:          25,
+				Balances:                     map[uint64]uint64{4: 0, 5: 0, 6: 0},
+			},
+		},
+		{
+			Args: args{
+				Name:                            "success many partial withdrawals",
+				NextWithdrawalIndex:             22,
+				NextWithdrawalValidatorIndex:    4,
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{7, 19, 28},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(7, 22), PendingPartialWithdrawal(19, 23), PendingPartialWithdrawal(28, 24),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 84,
+				NextWithdrawalIndex:          25,
+				Balances: map[uint64]uint64{
+					7:  maxEffectiveBalance,
+					19: maxEffectiveBalance,
+					28: maxEffectiveBalance,
+				},
+			},
+		},
+		{
+			Args: args{
+				Name:                            "success many withdrawals",
+				NextWithdrawalIndex:             22,
+				NextWithdrawalValidatorIndex:    88,
+				FullWithdrawalIndices:           []primitives.ValidatorIndex{7, 19, 28},
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{2, 1, 89, 15},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(89, 22), PendingPartialWithdrawal(1, 23), PendingPartialWithdrawal(2, 24),
+					fullWithdrawal(7, 25), PendingPartialWithdrawal(15, 26), fullWithdrawal(19, 27),
+					fullWithdrawal(28, 28),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 40,
+				NextWithdrawalIndex:          29,
+				Balances: map[uint64]uint64{
+					7: 0, 19: 0, 28: 0,
+					2: maxEffectiveBalance, 1: maxEffectiveBalance, 89: maxEffectiveBalance,
+					15: maxEffectiveBalance,
+				},
+			},
+		},
+		{
+			Args: args{
+				Name:                            "success many withdrawals with pending partial withdrawals in state",
+				NextWithdrawalIndex:             22,
+				NextWithdrawalValidatorIndex:    88,
+				FullWithdrawalIndices:           []primitives.ValidatorIndex{7, 19, 28},
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{2, 1, 89, 15},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(89, 22), PendingPartialWithdrawal(1, 23), PendingPartialWithdrawal(2, 24),
+					fullWithdrawal(7, 25), PendingPartialWithdrawal(15, 26), fullWithdrawal(19, 27),
+					fullWithdrawal(28, 28),
+				},
+				PendingPartialWithdrawals: []*ethpb.PendingPartialWithdrawal{
+					{
+						Index:  11,
+						Amount: withdrawalAmount(11) - maxEffectiveBalance,
+					},
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 40,
+				NextWithdrawalIndex:          29,
+				Balances: map[uint64]uint64{
+					7: 0, 19: 0, 28: 0,
+					2: maxEffectiveBalance, 1: maxEffectiveBalance, 89: maxEffectiveBalance,
+					15: maxEffectiveBalance,
+				},
+			},
+		},
+
+		{
+			Args: args{
+				Name:                         "success more than max fully withdrawals",
+				NextWithdrawalIndex:          22,
+				NextWithdrawalValidatorIndex: 0,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{1, 2, 3, 4, 5, 6, 7, 8, 9, 21, 22, 23, 24, 25, 26, 27, 29, 35, 89},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(1, 22), fullWithdrawal(2, 23), fullWithdrawal(3, 24),
+					fullWithdrawal(4, 25), fullWithdrawal(5, 26), fullWithdrawal(6, 27),
+					fullWithdrawal(7, 28), fullWithdrawal(8, 29), fullWithdrawal(9, 30),
+					fullWithdrawal(21, 31), fullWithdrawal(22, 32), fullWithdrawal(23, 33),
+					fullWithdrawal(24, 34), fullWithdrawal(25, 35), fullWithdrawal(26, 36),
+					fullWithdrawal(27, 37),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 28,
+				NextWithdrawalIndex:          38,
+				Balances: map[uint64]uint64{
+					1: 0, 2: 0, 3: 0, 4: 0, 5: 0, 6: 0, 7: 0, 8: 0, 9: 0,
+					21: 0, 22: 0, 23: 0, 24: 0, 25: 0, 26: 0, 27: 0,
+				},
+			},
+		},
+		{
+			Args: args{
+				Name:                            "success more than max partially withdrawals",
+				NextWithdrawalIndex:             22,
+				NextWithdrawalValidatorIndex:    0,
+				PendingPartialWithdrawalIndices: []primitives.ValidatorIndex{1, 2, 3, 4, 5, 6, 7, 8, 9, 21, 22, 23, 24, 25, 26, 27, 29, 35, 89},
+				Withdrawals: []*enginev1.Withdrawal{
+					PendingPartialWithdrawal(1, 22), PendingPartialWithdrawal(2, 23), PendingPartialWithdrawal(3, 24),
+					PendingPartialWithdrawal(4, 25), PendingPartialWithdrawal(5, 26), PendingPartialWithdrawal(6, 27),
+					PendingPartialWithdrawal(7, 28), PendingPartialWithdrawal(8, 29), PendingPartialWithdrawal(9, 30),
+					PendingPartialWithdrawal(21, 31), PendingPartialWithdrawal(22, 32), PendingPartialWithdrawal(23, 33),
+					PendingPartialWithdrawal(24, 34), PendingPartialWithdrawal(25, 35), PendingPartialWithdrawal(26, 36),
+					PendingPartialWithdrawal(27, 37),
+				},
+			},
+			Control: control{
+				NextWithdrawalValidatorIndex: 28,
+				NextWithdrawalIndex:          38,
+				Balances: map[uint64]uint64{
+					1:  maxEffectiveBalance,
+					2:  maxEffectiveBalance,
+					3:  maxEffectiveBalance,
+					4:  maxEffectiveBalance,
+					5:  maxEffectiveBalance,
+					6:  maxEffectiveBalance,
+					7:  maxEffectiveBalance,
+					8:  maxEffectiveBalance,
+					9:  maxEffectiveBalance,
+					21: maxEffectiveBalance,
+					22: maxEffectiveBalance,
+					23: maxEffectiveBalance,
+					24: maxEffectiveBalance,
+					25: maxEffectiveBalance,
+					26: maxEffectiveBalance,
+					27: maxEffectiveBalance,
+				},
+			},
+		},
+		{
+			Args: args{
+				Name:                         "Parent Node is not full",
+				NextWithdrawalIndex:          22,
+				NextWithdrawalValidatorIndex: 4,
+				FullWithdrawalIndices:        []primitives.ValidatorIndex{7, 19, 28, 1},
+				Withdrawals: []*enginev1.Withdrawal{
+					fullWithdrawal(7, 22), fullWithdrawal(19, 23), fullWithdrawal(28, 24),
+				},
+				LatestBlockHash: []byte{1, 2, 3},
+			},
+		},
+	}
+
+	checkPostState := func(t *testing.T, expected control, st state.BeaconState) {
+		l, err := st.NextWithdrawalValidatorIndex()
+		require.NoError(t, err)
+		require.Equal(t, expected.NextWithdrawalValidatorIndex, l)
+
+		n, err := st.NextWithdrawalIndex()
+		require.NoError(t, err)
+		require.Equal(t, expected.NextWithdrawalIndex, n)
+		balances := st.Balances()
+		for idx, bal := range expected.Balances {
+			require.Equal(t, bal, balances[idx])
+		}
+	}
+
+	prepareValidators := func(st state.BeaconState, arguments args) error {
+		validators := make([]*ethpb.Validator, numValidators)
+		if err := st.SetBalances(make([]uint64, numValidators)); err != nil {
+			return err
+		}
+		for i := range validators {
+			v := &ethpb.Validator{}
+			v.EffectiveBalance = maxEffectiveBalance
+			v.WithdrawableEpoch = epochInFuture
+			v.WithdrawalCredentials = make([]byte, 32)
+			v.WithdrawalCredentials[31] = byte(i)
+			if err := st.UpdateBalancesAtIndex(primitives.ValidatorIndex(i), v.EffectiveBalance-uint64(rand.Intn(1000))); err != nil {
+				return err
+			}
+			validators[i] = v
+		}
+		for _, idx := range arguments.FullWithdrawalIndices {
+			if idx != notWithdrawableIndex {
+				validators[idx].WithdrawableEpoch = epochInPast
+			}
+			if err := st.UpdateBalancesAtIndex(idx, withdrawalAmount(idx)); err != nil {
+				return err
+			}
+			validators[idx].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+		}
+		for _, idx := range arguments.PendingPartialWithdrawalIndices {
+			validators[idx].WithdrawalCredentials[0] = params.BeaconConfig().ETH1AddressWithdrawalPrefixByte
+			if err := st.UpdateBalancesAtIndex(idx, withdrawalAmount(idx)); err != nil {
+				return err
+			}
+		}
+		return st.SetValidators(validators)
+	}
+
+	for _, test := range tests {
+		t.Run(test.Args.Name, func(t *testing.T) {
+			saved := params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep
+			params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = maxSweep
+			if test.Args.Withdrawals == nil {
+				test.Args.Withdrawals = make([]*enginev1.Withdrawal, 0)
+			}
+			if test.Args.FullWithdrawalIndices == nil {
+				test.Args.FullWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
+			}
+			if test.Args.PendingPartialWithdrawalIndices == nil {
+				test.Args.PendingPartialWithdrawalIndices = make([]primitives.ValidatorIndex, 0)
+			}
+			slot, err := slots.EpochStart(currentEpoch)
+			require.NoError(t, err)
+			var st state.BeaconState
+			var p interfaces.ExecutionData
+			spb := &ethpb.BeaconStateEPBS{
+				Slot:                         slot,
+				NextWithdrawalValidatorIndex: test.Args.NextWithdrawalValidatorIndex,
+				NextWithdrawalIndex:          test.Args.NextWithdrawalIndex,
+				PendingPartialWithdrawals:    test.Args.PendingPartialWithdrawals,
+				LatestExecutionPayloadHeader: &enginev1.ExecutionPayloadHeaderEPBS{
+					BlockHash: []byte{},
+				},
+				LatestBlockHash: test.Args.LatestBlockHash,
+			}
+			st, err = state_native.InitializeFromProtoUnsafeEpbs(spb)
+			require.NoError(t, err)
+			env := random.ExecutionPayloadEnvelope(t)
+			env.Payload.Withdrawals = test.Args.Withdrawals
+			wp, err := consensusblocks.WrappedROExecutionPayloadEnvelope(env)
+			require.NoError(t, err)
+			p, err = wp.Execution()
+			require.NoError(t, err)
+			err = prepareValidators(st, test.Args)
+			require.NoError(t, err)
+			post, err := blocks.ProcessWithdrawals(st, p)
+			if test.Args.Name == "Parent Node is not full" {
+				require.IsNil(t, post)
+				require.IsNil(t, err)
+			} else {
+				require.NoError(t, err)
+				checkPostState(t, test.Control, post)
+			}
+			params.BeaconConfig().MaxValidatorsPerWithdrawalsSweep = saved
+		})
+	}
+}
+
 func TestProcessBLSToExecutionChanges(t *testing.T) {
 	spb := &ethpb.BeaconStateCapella{
 		Fork: &ethpb.Fork{

beacon-chain/core/electra/BUILD.bazel

@@ -34,13 +34,13 @@ go_library(
         "//contracts/deposit:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//math:go_default_library",
+        "//monitoring/tracing/trace:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
-        "@io_opencensus_go//trace:go_default_library",
     ],
 )
 

beacon-chain/core/electra/consolidations.go

@@ -11,10 +11,10 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
-	"go.opencensus.io/trace"
 )
 
 // ProcessPendingConsolidations implements the spec definition below. This method makes mutating

beacon-chain/core/electra/deposits.go

@@ -13,12 +13,12 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/contracts/deposit"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	log "github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
 )
 
 // ProcessDeposits is one of the operations performed on each processed

beacon-chain/core/electra/effective_balance_updates.go

@@ -30,21 +30,21 @@ import (
 //	            or validator.effective_balance + UPWARD_THRESHOLD < balance
 //	        ):
 //	            validator.effective_balance = min(balance - balance % EFFECTIVE_BALANCE_INCREMENT, EFFECTIVE_BALANCE_LIMIT)
-func ProcessEffectiveBalanceUpdates(state state.BeaconState) error {
+func ProcessEffectiveBalanceUpdates(st state.BeaconState) error {
 	effBalanceInc := params.BeaconConfig().EffectiveBalanceIncrement
 	hysteresisInc := effBalanceInc / params.BeaconConfig().HysteresisQuotient
 	downwardThreshold := hysteresisInc * params.BeaconConfig().HysteresisDownwardMultiplier
 	upwardThreshold := hysteresisInc * params.BeaconConfig().HysteresisUpwardMultiplier
 
-	bals := state.Balances()
+	bals := st.Balances()
 
 	// Update effective balances with hysteresis.
-	validatorFunc := func(idx int, val *ethpb.Validator) (bool, *ethpb.Validator, error) {
+	validatorFunc := func(idx int, val state.ReadOnlyValidator) (newVal *ethpb.Validator, err error) {
 		if val == nil {
-			return false, nil, fmt.Errorf("validator %d is nil in state", idx)
+			return nil, fmt.Errorf("validator %d is nil in state", idx)
 		}
 		if idx >= len(bals) {
-			return false, nil, fmt.Errorf("validator index exceeds validator length in state %d >= %d", idx, len(state.Balances()))
+			return nil, fmt.Errorf("validator index exceeds validator length in state %d >= %d", idx, len(st.Balances()))
 		}
 		balance := bals[idx]
 
@@ -53,13 +53,13 @@ func ProcessEffectiveBalanceUpdates(state state.BeaconState) error {
 			effectiveBalanceLimit = params.BeaconConfig().MaxEffectiveBalanceElectra
 		}
 
-		if balance+downwardThreshold < val.EffectiveBalance || val.EffectiveBalance+upwardThreshold < balance {
+		if balance+downwardThreshold < val.EffectiveBalance() || val.EffectiveBalance()+upwardThreshold < balance {
 			effectiveBal := min(balance-balance%effBalanceInc, effectiveBalanceLimit)
-			val.EffectiveBalance = effectiveBal
-			return true, val, nil
+			newVal = val.Copy()
+			newVal.EffectiveBalance = effectiveBal
 		}
-		return false, val, nil
+		return newVal, nil
 	}
 
-	return state.ApplyToEveryValidator(validatorFunc)
+	return st.ApplyToEveryValidator(validatorFunc)
 }

beacon-chain/core/electra/effective_balance_updates_test.go

@@ -11,6 +11,29 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
 )
 
+func TestProcessEffectiveBalanceUpdates_SafeCopy(t *testing.T) {
+	pb := &eth.BeaconStateElectra{
+		Validators: []*eth.Validator{
+			{
+				EffectiveBalance:      params.BeaconConfig().MinActivationBalance,
+				WithdrawalCredentials: []byte{params.BeaconConfig().CompoundingWithdrawalPrefixByte, 0x11},
+			},
+		},
+		Balances: []uint64{
+			params.BeaconConfig().MaxEffectiveBalanceElectra * 2,
+		},
+	}
+	st, err := state_native.InitializeFromProtoElectra(pb)
+	require.NoError(t, err)
+	copiedState := st.Copy()
+
+	err = electra.ProcessEffectiveBalanceUpdates(copiedState)
+	require.NoError(t, err)
+
+	require.Equal(t, st.Validators()[0].EffectiveBalance, params.BeaconConfig().MinActivationBalance)
+	require.Equal(t, copiedState.Validators()[0].EffectiveBalance, params.BeaconConfig().MaxEffectiveBalanceElectra)
+}
+
 func TestProcessEffectiveBalnceUpdates(t *testing.T) {
 	effBalanceInc := params.BeaconConfig().EffectiveBalanceIncrement
 	hysteresisInc := effBalanceInc / params.BeaconConfig().HysteresisQuotient

beacon-chain/core/electra/transition.go

@@ -12,7 +12,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"go.opencensus.io/trace"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 )
 
 // Re-exports for methods that haven't changed in Electra.

beacon-chain/core/electra/transition_no_verify_sig.go

@@ -78,23 +78,19 @@ func ProcessOperations(
 		return nil, errors.Wrap(err, "could not process bls-to-execution changes")
 	}
 	// new in electra
-	e, err := bb.Execution()
+	requests, err := bb.ExecutionRequests()
 	if err != nil {
-		return nil, errors.Wrap(err, "could not get execution data from block")
+		return nil, errors.Wrap(err, "could not get execution requests")
 	}
-	exe, ok := e.(interfaces.ExecutionDataElectra)
-	if !ok {
-		return nil, errors.New("could not cast execution data to electra execution data")
-	}
-	st, err = ProcessDepositRequests(ctx, st, exe.DepositRequests())
+	st, err = ProcessDepositRequests(ctx, st, requests.Deposits)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process deposit receipts")
 	}
-	st, err = ProcessWithdrawalRequests(ctx, st, exe.WithdrawalRequests())
+	st, err = ProcessWithdrawalRequests(ctx, st, requests.Withdrawals)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not process execution layer withdrawal requests")
 	}
-	if err := ProcessConsolidationRequests(ctx, st, exe.ConsolidationRequests()); err != nil {
+	if err := ProcessConsolidationRequests(ctx, st, requests.Consolidations); err != nil {
 		return nil, fmt.Errorf("could not process consolidation requests: %w", err)
 	}
 	return st, nil

beacon-chain/core/electra/upgrade.go

@@ -10,7 +10,6 @@ import (
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
@@ -245,26 +244,23 @@ func UpgradeToElectra(beaconState state.BeaconState) (state.BeaconState, error)
 		CurrentSyncCommittee:        currentSyncCommittee,
 		NextSyncCommittee:           nextSyncCommittee,
 		LatestExecutionPayloadHeader: &enginev1.ExecutionPayloadHeaderElectra{
-			ParentHash:                payloadHeader.ParentHash(),
-			FeeRecipient:              payloadHeader.FeeRecipient(),
-			StateRoot:                 payloadHeader.StateRoot(),
-			ReceiptsRoot:              payloadHeader.ReceiptsRoot(),
-			LogsBloom:                 payloadHeader.LogsBloom(),
-			PrevRandao:                payloadHeader.PrevRandao(),
-			BlockNumber:               payloadHeader.BlockNumber(),
-			GasLimit:                  payloadHeader.GasLimit(),
-			GasUsed:                   payloadHeader.GasUsed(),
-			Timestamp:                 payloadHeader.Timestamp(),
-			ExtraData:                 payloadHeader.ExtraData(),
-			BaseFeePerGas:             payloadHeader.BaseFeePerGas(),
-			BlockHash:                 payloadHeader.BlockHash(),
-			TransactionsRoot:          txRoot,
-			WithdrawalsRoot:           wdRoot,
-			ExcessBlobGas:             excessBlobGas,
-			BlobGasUsed:               blobGasUsed,
-			DepositRequestsRoot:       bytesutil.Bytes32(0), // [New in Electra:EIP6110]
-			WithdrawalRequestsRoot:    bytesutil.Bytes32(0), // [New in Electra:EIP7002]
-			ConsolidationRequestsRoot: bytesutil.Bytes32(0), // [New in Electra:EIP7251]
+			ParentHash:       payloadHeader.ParentHash(),
+			FeeRecipient:     payloadHeader.FeeRecipient(),
+			StateRoot:        payloadHeader.StateRoot(),
+			ReceiptsRoot:     payloadHeader.ReceiptsRoot(),
+			LogsBloom:        payloadHeader.LogsBloom(),
+			PrevRandao:       payloadHeader.PrevRandao(),
+			BlockNumber:      payloadHeader.BlockNumber(),
+			GasLimit:         payloadHeader.GasLimit(),
+			GasUsed:          payloadHeader.GasUsed(),
+			Timestamp:        payloadHeader.Timestamp(),
+			ExtraData:        payloadHeader.ExtraData(),
+			BaseFeePerGas:    payloadHeader.BaseFeePerGas(),
+			BlockHash:        payloadHeader.BlockHash(),
+			TransactionsRoot: txRoot,
+			WithdrawalsRoot:  wdRoot,
+			ExcessBlobGas:    excessBlobGas,
+			BlobGasUsed:      blobGasUsed,
 		},
 		NextWithdrawalIndex:          wi,
 		NextWithdrawalValidatorIndex: vi,

beacon-chain/core/electra/upgrade_test.go

@@ -8,7 +8,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
-	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/testing/require"
@@ -113,24 +112,21 @@ func TestUpgradeToElectra(t *testing.T) {
 	wdRoot, err := prevHeader.WithdrawalsRoot()
 	require.NoError(t, err)
 	wanted := &enginev1.ExecutionPayloadHeaderElectra{
-		ParentHash:                prevHeader.ParentHash(),
-		FeeRecipient:              prevHeader.FeeRecipient(),
-		StateRoot:                 prevHeader.StateRoot(),
-		ReceiptsRoot:              prevHeader.ReceiptsRoot(),
-		LogsBloom:                 prevHeader.LogsBloom(),
-		PrevRandao:                prevHeader.PrevRandao(),
-		BlockNumber:               prevHeader.BlockNumber(),
-		GasLimit:                  prevHeader.GasLimit(),
-		GasUsed:                   prevHeader.GasUsed(),
-		Timestamp:                 prevHeader.Timestamp(),
-		ExtraData:                 prevHeader.ExtraData(),
-		BaseFeePerGas:             prevHeader.BaseFeePerGas(),
-		BlockHash:                 prevHeader.BlockHash(),
-		TransactionsRoot:          txRoot,
-		WithdrawalsRoot:           wdRoot,
-		DepositRequestsRoot:       bytesutil.Bytes32(0),
-		WithdrawalRequestsRoot:    bytesutil.Bytes32(0),
-		ConsolidationRequestsRoot: bytesutil.Bytes32(0),
+		ParentHash:       prevHeader.ParentHash(),
+		FeeRecipient:     prevHeader.FeeRecipient(),
+		StateRoot:        prevHeader.StateRoot(),
+		ReceiptsRoot:     prevHeader.ReceiptsRoot(),
+		LogsBloom:        prevHeader.LogsBloom(),
+		PrevRandao:       prevHeader.PrevRandao(),
+		BlockNumber:      prevHeader.BlockNumber(),
+		GasLimit:         prevHeader.GasLimit(),
+		GasUsed:          prevHeader.GasUsed(),
+		Timestamp:        prevHeader.Timestamp(),
+		ExtraData:        prevHeader.ExtraData(),
+		BaseFeePerGas:    prevHeader.BaseFeePerGas(),
+		BlockHash:        prevHeader.BlockHash(),
+		TransactionsRoot: txRoot,
+		WithdrawalsRoot:  wdRoot,
 	}
 	require.DeepEqual(t, wanted, protoHeader)
 

beacon-chain/core/electra/withdrawals.go

@@ -12,11 +12,11 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/time/slots"
 	log "github.com/sirupsen/logrus"
-	"go.opencensus.io/trace"
 )
 
 // ProcessWithdrawalRequests processes the validator withdrawals from the provided execution payload

beacon-chain/core/epbs/BUILD.bazel

@@ -0,0 +1,38 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "attestation.go",
+        "execution_payload_envelope.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epbs",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//beacon-chain/core/electra:go_default_library",
+        "//beacon-chain/state:go_default_library",
+        "//consensus-types/interfaces:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "@com_github_pkg_errors//:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "attestation_test.go",
+        "execution_payload_envelope_test.go",
+    ],
+    embed = [":go_default_library"],
+    deps = [
+        "//beacon-chain/core/altair:go_default_library",
+        "//beacon-chain/state/state-native:go_default_library",
+        "//config/params:go_default_library",
+        "//consensus-types/blocks:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "//testing/require:go_default_library",
+        "//testing/util:go_default_library",
+        "//testing/util/random:go_default_library",
+    ],
+)

beacon-chain/core/epbs/attestation.go

@@ -0,0 +1,13 @@
+package epbs
+
+import (
+	"fmt"
+)
+
+// RemoveValidatorFlag removes validator flag from existing one.
+func RemoveValidatorFlag(flag, flagPosition uint8) (uint8, error) {
+	if flagPosition > 7 {
+		return flag, fmt.Errorf("flag position %d exceeds length", flagPosition)
+	}
+	return flag & ^(1 << flagPosition), nil
+}

beacon-chain/core/epbs/attestation_test.go

@@ -0,0 +1,93 @@
+package epbs_test
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/altair"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/epbs"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+)
+
+func TestValidatorFlag_Remove(t *testing.T) {
+	tests := []struct {
+		name          string
+		add           []uint8
+		remove        []uint8
+		expectedTrue  []uint8
+		expectedFalse []uint8
+	}{
+		{
+			name:          "none",
+			add:           []uint8{},
+			remove:        []uint8{},
+			expectedTrue:  []uint8{},
+			expectedFalse: []uint8{params.BeaconConfig().TimelySourceFlagIndex, params.BeaconConfig().TimelyTargetFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+		},
+		{
+			name:          "source",
+			add:           []uint8{params.BeaconConfig().TimelySourceFlagIndex},
+			remove:        []uint8{params.BeaconConfig().TimelySourceFlagIndex},
+			expectedTrue:  []uint8{},
+			expectedFalse: []uint8{params.BeaconConfig().TimelySourceFlagIndex, params.BeaconConfig().TimelyTargetFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+		},
+		{
+			name:          "source, target",
+			add:           []uint8{params.BeaconConfig().TimelySourceFlagIndex, params.BeaconConfig().TimelyTargetFlagIndex},
+			remove:        []uint8{params.BeaconConfig().TimelySourceFlagIndex},
+			expectedTrue:  []uint8{params.BeaconConfig().TimelyTargetFlagIndex},
+			expectedFalse: []uint8{params.BeaconConfig().TimelySourceFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+		},
+		{
+			name:          "source, target, head",
+			add:           []uint8{params.BeaconConfig().TimelySourceFlagIndex, params.BeaconConfig().TimelyTargetFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+			remove:        []uint8{params.BeaconConfig().TimelyTargetFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+			expectedTrue:  []uint8{params.BeaconConfig().TimelySourceFlagIndex},
+			expectedFalse: []uint8{params.BeaconConfig().TimelyTargetFlagIndex, params.BeaconConfig().TimelyHeadFlagIndex},
+		},
+	}
+	var err error
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			flag := uint8(0)
+
+			// Add flags.
+			for _, flagPosition := range test.add {
+				flag, err = altair.AddValidatorFlag(flag, flagPosition)
+				require.NoError(t, err)
+
+				has, err := altair.HasValidatorFlag(flag, flagPosition)
+				require.NoError(t, err)
+				require.Equal(t, true, has)
+			}
+
+			// Remove flags.
+			for _, flagPosition := range test.remove {
+				flag, err = epbs.RemoveValidatorFlag(flag, flagPosition)
+				require.NoError(t, err)
+			}
+
+			// Check if flags are set correctly.
+			for _, flagPosition := range test.expectedTrue {
+				has, err := altair.HasValidatorFlag(flag, flagPosition)
+				require.NoError(t, err)
+				require.Equal(t, true, has)
+			}
+			for _, flagPosition := range test.expectedFalse {
+				has, err := altair.HasValidatorFlag(flag, flagPosition)
+				require.NoError(t, err)
+				require.Equal(t, false, has)
+			}
+		})
+	}
+}
+
+func TestValidatorFlag_Remove_ExceedsLength(t *testing.T) {
+	_, err := epbs.RemoveValidatorFlag(0, 8)
+	require.ErrorContains(t, "flag position 8 exceeds length", err)
+}
+
+func TestValidatorFlag_Remove_NotSet(t *testing.T) {
+	_, err := epbs.RemoveValidatorFlag(0, 1)
+	require.NoError(t, err)
+}

beacon-chain/core/epbs/execution_payload_envelope.go

@@ -0,0 +1,126 @@
+package epbs
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/electra"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/interfaces"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+)
+
+// ValidatePayloadStateTransition performs the process_execution_payload
+// function.
+func ValidatePayloadStateTransition(
+	ctx context.Context,
+	preState state.BeaconState,
+	envelope interfaces.ROExecutionPayloadEnvelope,
+) error {
+	if err := validateAgainstHeader(ctx, preState, envelope); err != nil {
+		return err
+	}
+	committedHeader, err := preState.LatestExecutionPayloadHeaderEPBS()
+	if err != nil {
+		return err
+	}
+	if err := validateAgainstCommittedBid(committedHeader, envelope); err != nil {
+		return err
+	}
+	if err := ProcessPayloadStateTransition(ctx, preState, envelope); err != nil {
+		return err
+	}
+	return checkPostStateRoot(ctx, preState, envelope)
+}
+
+func ProcessPayloadStateTransition(
+	ctx context.Context,
+	preState state.BeaconState,
+	envelope interfaces.ROExecutionPayloadEnvelope,
+) error {
+	er := envelope.ExecutionRequests()
+	preState, err := electra.ProcessDepositRequests(ctx, preState, er.Deposits)
+	if err != nil {
+		return errors.Wrap(err, "could not process deposit receipts")
+	}
+	preState, err = electra.ProcessWithdrawalRequests(ctx, preState, er.Withdrawals)
+	if err != nil {
+		return errors.Wrap(err, "could not process ercution layer withdrawal requests")
+	}
+	if err := electra.ProcessConsolidationRequests(ctx, preState, er.Consolidations); err != nil {
+		return errors.Wrap(err, "could not process consolidation requests")
+	}
+	payload, err := envelope.Execution()
+	if err != nil {
+		return errors.Wrap(err, "could not get execution payload")
+	}
+	if err := preState.SetLatestBlockHash(payload.BlockHash()); err != nil {
+		return err
+	}
+	return preState.SetLatestFullSlot(preState.Slot())
+}
+
+func validateAgainstHeader(
+	ctx context.Context,
+	preState state.BeaconState,
+	envelope interfaces.ROExecutionPayloadEnvelope,
+) error {
+	blockHeader := preState.LatestBlockHeader()
+	if blockHeader == nil {
+		return errors.New("invalid nil latest block header")
+	}
+	if len(blockHeader.StateRoot) == 0 || [32]byte(blockHeader.StateRoot) == [32]byte{} {
+		prevStateRoot, err := preState.HashTreeRoot(ctx)
+		if err != nil {
+			return errors.Wrap(err, "could not compute previous state root")
+		}
+		blockHeader.StateRoot = prevStateRoot[:]
+		if err := preState.SetLatestBlockHeader(blockHeader); err != nil {
+			return errors.Wrap(err, "could not set latest block header")
+		}
+	}
+	blockHeaderRoot, err := blockHeader.HashTreeRoot()
+	if err != nil {
+		return err
+	}
+	beaconBlockRoot := envelope.BeaconBlockRoot()
+	if blockHeaderRoot != beaconBlockRoot {
+		return fmt.Errorf("beacon block root does not match previous header, got: %#x wanted: %#x", beaconBlockRoot, blockHeaderRoot)
+	}
+	return nil
+}
+
+func validateAgainstCommittedBid(
+	committedHeader *enginev1.ExecutionPayloadHeaderEPBS,
+	envelope interfaces.ROExecutionPayloadEnvelope,
+) error {
+	builderIndex := envelope.BuilderIndex()
+	if committedHeader.BuilderIndex != builderIndex {
+		return errors.New("builder index does not match committed header")
+	}
+	kzgRoot, err := envelope.BlobKzgCommitmentsRoot()
+	if err != nil {
+		return err
+	}
+	if [32]byte(committedHeader.BlobKzgCommitmentsRoot) != kzgRoot {
+		return errors.New("blob KZG commitments root does not match committed header")
+	}
+	return nil
+}
+
+func checkPostStateRoot(
+	ctx context.Context,
+	preState state.BeaconState,
+	envelope interfaces.ROExecutionPayloadEnvelope,
+) error {
+	stateRoot, err := preState.HashTreeRoot(ctx)
+	if err != nil {
+		return err
+	}
+	envelopeStateRoot := envelope.StateRoot()
+	if stateRoot != envelopeStateRoot {
+		return errors.New("state root mismatch")
+	}
+	return nil
+}

beacon-chain/core/epbs/execution_payload_envelope_test.go

@@ -0,0 +1,108 @@
+package epbs
+
+import (
+	"context"
+	"testing"
+
+	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/blocks"
+	enginev1 "github.com/prysmaticlabs/prysm/v5/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/testing/require"
+	"github.com/prysmaticlabs/prysm/v5/testing/util"
+	"github.com/prysmaticlabs/prysm/v5/testing/util/random"
+)
+
+func TestProcessPayloadStateTransition(t *testing.T) {
+	bh := [32]byte{'h'}
+	p := random.ExecutionPayloadEnvelope(t)
+	p.Payload.BlockHash = bh[:]
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	validators := make([]*ethpb.Validator, 0)
+	stpb := &ethpb.BeaconStateEPBS{Slot: 3, Validators: validators}
+	st, err := state_native.InitializeFromProtoUnsafeEpbs(stpb)
+	require.NoError(t, err)
+	ctx := context.Background()
+
+	lbh, err := st.LatestBlockHash()
+	require.NoError(t, err)
+	require.Equal(t, [32]byte{}, [32]byte(lbh))
+
+	require.NoError(t, ProcessPayloadStateTransition(ctx, st, e))
+
+	lbh, err = st.LatestBlockHash()
+	require.NoError(t, err)
+	require.Equal(t, bh, [32]byte(lbh))
+
+	lfs, err := st.LatestFullSlot()
+	require.NoError(t, err)
+	require.Equal(t, lfs, st.Slot())
+}
+
+func Test_validateAgainstHeader(t *testing.T) {
+	bh := [32]byte{'h'}
+	payload := &enginev1.ExecutionPayloadElectra{BlockHash: bh[:]}
+	p := random.ExecutionPayloadEnvelope(t)
+	p.Payload = payload
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	stpb := &ethpb.BeaconStateEPBS{Slot: 3}
+	st, err := state_native.InitializeFromProtoUnsafeEpbs(stpb)
+	require.NoError(t, err)
+	ctx := context.Background()
+	require.ErrorContains(t, "invalid nil latest block header", validateAgainstHeader(ctx, st, e))
+
+	prest, _ := util.DeterministicGenesisStateEpbs(t, 64)
+	br := [32]byte{'r'}
+	p.BeaconBlockRoot = br[:]
+	require.ErrorContains(t, "beacon block root does not match previous header", validateAgainstHeader(ctx, prest, e))
+
+	header := prest.LatestBlockHeader()
+	require.NoError(t, err)
+	headerRoot, err := header.HashTreeRoot()
+	require.NoError(t, err)
+	p.BeaconBlockRoot = headerRoot[:]
+	require.NoError(t, validateAgainstHeader(ctx, prest, e))
+}
+
+func Test_validateAgainstCommittedBid(t *testing.T) {
+	payload := &enginev1.ExecutionPayloadElectra{}
+	p := random.ExecutionPayloadEnvelope(t)
+	p.Payload = payload
+	p.BuilderIndex = 1
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	h := &enginev1.ExecutionPayloadHeaderEPBS{}
+	require.ErrorContains(t, "builder index does not match committed header", validateAgainstCommittedBid(h, e))
+
+	h.BuilderIndex = 1
+	p.BlobKzgCommitments = make([][]byte, 6)
+	for i := range p.BlobKzgCommitments {
+		p.BlobKzgCommitments[i] = make([]byte, 48)
+	}
+	h.BlobKzgCommitmentsRoot = make([]byte, 32)
+	require.ErrorContains(t, "blob KZG commitments root does not match committed header", validateAgainstCommittedBid(h, e))
+
+	root, err := e.BlobKzgCommitmentsRoot()
+	require.NoError(t, err)
+	h.BlobKzgCommitmentsRoot = root[:]
+	require.NoError(t, validateAgainstCommittedBid(h, e))
+}
+
+func TestCheckPostStateRoot(t *testing.T) {
+	payload := &enginev1.ExecutionPayloadElectra{}
+	p := random.ExecutionPayloadEnvelope(t)
+	p.Payload = payload
+	p.BuilderIndex = 1
+	e, err := blocks.WrappedROExecutionPayloadEnvelope(p)
+	require.NoError(t, err)
+	ctx := context.Background()
+	st, _ := util.DeterministicGenesisStateEpbs(t, 64)
+	p.StateRoot = make([]byte, 32)
+	require.ErrorContains(t, "state root mismatch", checkPostStateRoot(ctx, st, e))
+	root, err := st.HashTreeRoot(ctx)
+	require.NoError(t, err)
+	p.StateRoot = root[:]
+	require.NoError(t, checkPostStateRoot(ctx, st, e))
+}

beacon-chain/core/epoch/epoch_processing.go

@@ -153,9 +153,9 @@ func ProcessRegistryUpdates(ctx context.Context, st state.BeaconState) (state.Be
 //	          penalty_numerator = validator.effective_balance // increment * adjusted_total_slashing_balance
 //	          penalty = penalty_numerator // total_balance * increment
 //	          decrease_balance(state, ValidatorIndex(index), penalty)
-func ProcessSlashings(state state.BeaconState, slashingMultiplier uint64) (state.BeaconState, error) {
-	currentEpoch := time.CurrentEpoch(state)
-	totalBalance, err := helpers.TotalActiveBalance(state)
+func ProcessSlashings(st state.BeaconState, slashingMultiplier uint64) (state.BeaconState, error) {
+	currentEpoch := time.CurrentEpoch(st)
+	totalBalance, err := helpers.TotalActiveBalance(st)
 	if err != nil {
 		return nil, errors.Wrap(err, "could not get total active balance")
 	}
@@ -164,7 +164,7 @@ func ProcessSlashings(state state.BeaconState, slashingMultiplier uint64) (state
 	exitLength := params.BeaconConfig().EpochsPerSlashingsVector
 
 	// Compute the sum of state slashings
-	slashings := state.Slashings()
+	slashings := st.Slashings()
 	totalSlashing := uint64(0)
 	for _, slashing := range slashings {
 		totalSlashing, err = math.Add64(totalSlashing, slashing)
@@ -177,19 +177,27 @@ func ProcessSlashings(state state.BeaconState, slashingMultiplier uint64) (state
 	// below equally.
 	increment := params.BeaconConfig().EffectiveBalanceIncrement
 	minSlashing := math.Min(totalSlashing*slashingMultiplier, totalBalance)
-	err = state.ApplyToEveryValidator(func(idx int, val *ethpb.Validator) (bool, *ethpb.Validator, error) {
-		correctEpoch := (currentEpoch + exitLength/2) == val.WithdrawableEpoch
-		if val.Slashed && correctEpoch {
-			penaltyNumerator := val.EffectiveBalance / increment * minSlashing
+	bals := st.Balances()
+	changed := false
+	err = st.ReadFromEveryValidator(func(idx int, val state.ReadOnlyValidator) error {
+		correctEpoch := (currentEpoch + exitLength/2) == val.WithdrawableEpoch()
+		if val.Slashed() && correctEpoch {
+			penaltyNumerator := val.EffectiveBalance() / increment * minSlashing
 			penalty := penaltyNumerator / totalBalance * increment
-			if err := helpers.DecreaseBalance(state, primitives.ValidatorIndex(idx), penalty); err != nil {
-				return false, val, err
-			}
-			return true, val, nil
+			bals[idx] = helpers.DecreaseBalanceWithVal(bals[idx], penalty)
+			changed = true
 		}
-		return false, val, nil
+		return nil
 	})
-	return state, err
+	if err != nil {
+		return nil, err
+	}
+	if changed {
+		if err := st.SetBalances(bals); err != nil {
+			return nil, err
+		}
+	}
+	return st, nil
 }
 
 // ProcessEth1DataReset processes updates to ETH1 data votes during epoch processing.
@@ -231,45 +239,43 @@ func ProcessEth1DataReset(state state.BeaconState) (state.BeaconState, error) {
 //	          or validator.effective_balance + UPWARD_THRESHOLD < balance
 //	      ):
 //	          validator.effective_balance = min(balance - balance % EFFECTIVE_BALANCE_INCREMENT, MAX_EFFECTIVE_BALANCE)
-func ProcessEffectiveBalanceUpdates(state state.BeaconState) (state.BeaconState, error) {
+func ProcessEffectiveBalanceUpdates(st state.BeaconState) (state.BeaconState, error) {
 	effBalanceInc := params.BeaconConfig().EffectiveBalanceIncrement
 	maxEffBalance := params.BeaconConfig().MaxEffectiveBalance
 	hysteresisInc := effBalanceInc / params.BeaconConfig().HysteresisQuotient
 	downwardThreshold := hysteresisInc * params.BeaconConfig().HysteresisDownwardMultiplier
 	upwardThreshold := hysteresisInc * params.BeaconConfig().HysteresisUpwardMultiplier
 
-	bals := state.Balances()
+	bals := st.Balances()
 
 	// Update effective balances with hysteresis.
-	validatorFunc := func(idx int, val *ethpb.Validator) (bool, *ethpb.Validator, error) {
+	validatorFunc := func(idx int, val state.ReadOnlyValidator) (newVal *ethpb.Validator, err error) {
 		if val == nil {
-			return false, nil, fmt.Errorf("validator %d is nil in state", idx)
+			return nil, fmt.Errorf("validator %d is nil in state", idx)
 		}
 		if idx >= len(bals) {
-			return false, nil, fmt.Errorf("validator index exceeds validator length in state %d >= %d", idx, len(state.Balances()))
+			return nil, fmt.Errorf("validator index exceeds validator length in state %d >= %d", idx, len(st.Balances()))
 		}
 		balance := bals[idx]
 
-		if balance+downwardThreshold < val.EffectiveBalance || val.EffectiveBalance+upwardThreshold < balance {
+		if balance+downwardThreshold < val.EffectiveBalance() || val.EffectiveBalance()+upwardThreshold < balance {
 			effectiveBal := maxEffBalance
 			if effectiveBal > balance-balance%effBalanceInc {
 				effectiveBal = balance - balance%effBalanceInc
 			}
-			if effectiveBal != val.EffectiveBalance {
-				newVal := ethpb.CopyValidator(val)
+			if effectiveBal != val.EffectiveBalance() {
+				newVal = val.Copy()
 				newVal.EffectiveBalance = effectiveBal
-				return true, newVal, nil
 			}
-			return false, val, nil
 		}
-		return false, val, nil
+		return
 	}
 
-	if err := state.ApplyToEveryValidator(validatorFunc); err != nil {
+	if err := st.ApplyToEveryValidator(validatorFunc); err != nil {
 		return nil, err
 	}
 
-	return state, nil
+	return st, nil
 }
 
 // ProcessSlashingsReset processes the total slashing balances updates during epoch processing.

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

@@ -31,7 +31,6 @@ go_library(
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",
-        "@io_opencensus_go//trace:go_default_library",
     ],
 )
 

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

@@ -11,7 +11,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
-	"go.opencensus.io/trace"
+	"github.com/prysmaticlabs/prysm/v5/monitoring/tracing/trace"
 )
 
 // New gets called at the beginning of process epoch cycle to return

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

@@ -5,9 +5,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
-	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/math"
-	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 )
 
 // ProcessSlashingsPrecompute processes the slashed validators during epoch processing.
@@ -44,18 +42,18 @@ func ProcessSlashingsPrecompute(s state.BeaconState, pBal *Balance) error {
 	}
 
 	increment := params.BeaconConfig().EffectiveBalanceIncrement
-	validatorFunc := func(idx int, val *ethpb.Validator) (bool, *ethpb.Validator, error) {
-		correctEpoch := epochToWithdraw == val.WithdrawableEpoch
-		if val.Slashed && correctEpoch {
-			penaltyNumerator := val.EffectiveBalance / increment * minSlashing
+	bals := s.Balances()
+	validatorFunc := func(idx int, val state.ReadOnlyValidator) error {
+		correctEpoch := epochToWithdraw == val.WithdrawableEpoch()
+		if val.Slashed() && correctEpoch {
+			penaltyNumerator := val.EffectiveBalance() / increment * minSlashing
 			penalty := penaltyNumerator / pBal.ActiveCurrentEpoch * increment
-			if err := helpers.DecreaseBalance(s, primitives.ValidatorIndex(idx), penalty); err != nil {
-				return false, val, err
-			}
-			return true, val, nil
+			bals[idx] = helpers.DecreaseBalanceWithVal(bals[idx], penalty)
 		}
-		return false, val, nil
+		return nil
 	}
-
-	return s.ApplyToEveryValidator(validatorFunc)
+	if err := s.ReadFromEveryValidator(validatorFunc); err != nil {
+		return err
+	}
+	return s.SetBalances(bals)
 }

beacon-chain/core/helpers/BUILD.bazel

@@ -8,6 +8,7 @@ go_library(
         "block.go",
         "genesis.go",
         "metrics.go",
+        "payload_attestation.go",
         "randao.go",
         "rewards_penalties.go",
         "shuffle.go",
@@ -20,11 +21,13 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//beacon-chain/cache:go_default_library",
+        "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/forkchoice/types:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/epbs:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
@@ -53,6 +56,8 @@ go_test(
         "attestation_test.go",
         "beacon_committee_test.go",
         "block_test.go",
+        "exports_test.go",
+        "payload_attestation_test.go",
         "private_access_fuzz_noop_test.go",  # keep
         "private_access_test.go",
         "randao_test.go",
@@ -63,26 +68,33 @@ go_test(
         "validators_test.go",
         "weak_subjectivity_test.go",
     ],
+    data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     shard_count = 2,
     tags = ["CI_race_detection"],
     deps = [
         "//beacon-chain/cache:go_default_library",
+        "//beacon-chain/core/signing:go_default_library",
         "//beacon-chain/core/time:go_default_library",
         "//beacon-chain/forkchoice/types:go_default_library",
         "//beacon-chain/state:go_default_library",
         "//beacon-chain/state/state-native:go_default_library",
         "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
+        "//consensus-types/epbs:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//container/slice:go_default_library",
+        "//crypto/bls:go_default_library",
         "//crypto/hash:go_default_library",
+        "//crypto/rand:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//math:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//runtime/version:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
+        "//testing/util/random:go_default_library",
         "//time:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_prysmaticlabs_go_bitfield//:go_default_library",

beacon-chain/core/helpers/beacon_committee.go

@@ -213,6 +213,7 @@ type CommitteeAssignment struct {
 	Committee      []primitives.ValidatorIndex
 	AttesterSlot   primitives.Slot
 	CommitteeIndex primitives.CommitteeIndex
+	PtcSlot        primitives.Slot
 }
 
 // verifyAssignmentEpoch verifies if the given epoch is valid for assignment based on the provided state.
@@ -294,7 +295,7 @@ func CommitteeAssignments(ctx context.Context, state state.BeaconState, epoch pr
 	if err := verifyAssignmentEpoch(epoch, state); err != nil {
 		return nil, err
 	}
-	startSlot, err := slots.EpochStart(epoch)
+	slot, err := slots.EpochStart(epoch)
 	if err != nil {
 		return nil, err
 	}
@@ -303,14 +304,17 @@ func CommitteeAssignments(ctx context.Context, state state.BeaconState, epoch pr
 		vals[v] = struct{}{}
 	}
 	assignments := make(map[primitives.ValidatorIndex]*CommitteeAssignment)
+
+	committees, err := BeaconCommittees(ctx, state, slot)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not compute beacon committees")
+	}
+	ptcPerSlot, ptcMembersPerCommittee := PtcAllocation(len(committees))
 	// Compute committee assignments for each slot in the epoch.
-	for slot := startSlot; slot < startSlot+params.BeaconConfig().SlotsPerEpoch; slot++ {
-		committees, err := BeaconCommittees(ctx, state, slot)
-		if err != nil {
-			return nil, errors.Wrap(err, "could not compute beacon committees")
-		}
+	endSlot := slot + params.BeaconConfig().SlotsPerEpoch
+	for {
 		for j, committee := range committees {
-			for _, vIndex := range committee {
+			for i, vIndex := range committee {
 				if _, ok := vals[vIndex]; !ok { // Skip if the validator is not in the provided validators slice.
 					continue
 				}
@@ -320,8 +324,19 @@ func CommitteeAssignments(ctx context.Context, state state.BeaconState, epoch pr
 				assignments[vIndex].Committee = committee
 				assignments[vIndex].AttesterSlot = slot
 				assignments[vIndex].CommitteeIndex = primitives.CommitteeIndex(j)
+				if uint64(j) < ptcPerSlot && uint64(i) < ptcMembersPerCommittee {
+					assignments[vIndex].PtcSlot = slot
+				}
 			}
 		}
+		slot++
+		if slot == endSlot {
+			break
+		}
+		committees, err = BeaconCommittees(ctx, state, slot)
+		if err != nil {
+			return nil, errors.Wrap(err, "could not compute beacon committees")
+		}
 	}
 	return assignments, nil
 }

beacon-chain/core/helpers/beacon_committee_test.go

@@ -3,6 +3,7 @@ package helpers_test
 import (
 	"context"
 	"fmt"
+	"slices"
 	"strconv"
 	"testing"
 
@@ -10,6 +11,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/time"
 	state_native "github.com/prysmaticlabs/prysm/v5/beacon-chain/state/state-native"
+	field_params "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v5/config/params"
 	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v5/container/slice"
@@ -722,15 +724,26 @@ func TestCommitteeIndices(t *testing.T) {
 	assert.DeepEqual(t, []primitives.CommitteeIndex{0, 1, 3}, indices)
 }
 
-func TestAttestationCommittees(t *testing.T) {
-	validators := make([]*ethpb.Validator, params.BeaconConfig().SlotsPerEpoch.Mul(params.BeaconConfig().TargetCommitteeSize))
+func TestCommitteeAssignments_PTC(t *testing.T) {
+	helpers.ClearCache()
+	// Create 10 committees. Total 40960 validators.
+	committeeCount := uint64(10)
+	validatorCount := committeeCount * params.BeaconConfig().TargetCommitteeSize * uint64(params.BeaconConfig().SlotsPerEpoch)
+	validators := make([]*ethpb.Validator, validatorCount)
+	validatorIndices := make([]primitives.ValidatorIndex, validatorCount)
+
 	for i := 0; i < len(validators); i++ {
+		k := make([]byte, 48)
+		copy(k, strconv.Itoa(i))
 		validators[i] = &ethpb.Validator{
-			ExitEpoch: params.BeaconConfig().FarFutureEpoch,
+			PublicKey:             k,
+			WithdrawalCredentials: make([]byte, 32),
+			ExitEpoch:             params.BeaconConfig().FarFutureEpoch,
 		}
+		validatorIndices[i] = primitives.ValidatorIndex(i)
 	}
 
-	state, err := state_native.InitializeFromProtoPhase0(&ethpb.BeaconState{
+	state, err := state_native.InitializeFromProtoEpbs(&ethpb.BeaconStateEPBS{
 		Validators:  validators,
 		RandaoMixes: make([][]byte, params.BeaconConfig().EpochsPerHistoricalVector),
 	})
@@ -754,6 +767,31 @@ func TestAttestationCommittees(t *testing.T) {
 		assert.Equal(t, params.BeaconConfig().TargetCommitteeSize, uint64(len(committees[0])))
 		assert.Equal(t, params.BeaconConfig().TargetCommitteeSize, uint64(len(committees[1])))
 	})
+	as, err := helpers.CommitteeAssignments(context.Background(), state, 1, validatorIndices)
+	require.NoError(t, err)
+
+	// Capture all the slots and all the validator index that belonged in a PTC using a map for verification later.
+	slotValidatorMap := make(map[primitives.Slot][]primitives.ValidatorIndex)
+	for i, a := range as {
+		slotValidatorMap[a.PtcSlot] = append(slotValidatorMap[a.PtcSlot], i)
+	}
+
+	// Verify that all the slots have the correct number of PTC.
+	for s, v := range slotValidatorMap {
+		if s == 0 {
+			continue
+		}
+		// Make sure all the PTC are the correct size from the map.
+		require.Equal(t, len(v), field_params.PTCSize)
+
+		// Get the actual PTC from the beacon state using the helper function
+		ptc, err := helpers.GetPayloadTimelinessCommittee(context.Background(), state, s)
+		require.NoError(t, err)
+		for _, index := range ptc {
+			i := slices.Index(v, index)
+			require.NotEqual(t, -1, i) // PTC not found from the assignment map
+		}
+	}
 }
 
 func TestBeaconCommittees(t *testing.T) {

beacon-chain/core/helpers/exports_test.go

@@ -0,0 +1,12 @@
+package helpers
+
+var (
+	ErrNilMessage            = errNilMessage
+	ErrNilData               = errNilData
+	ErrNilBeaconBlockRoot    = errNilBeaconBlockRoot
+	ErrNilPayloadAttestation = errNilPayloadAttestation
+	ErrNilSignature          = errNilSignature
+	ErrNilAggregationBits    = errNilAggregationBits
+	ErrPreEPBSState          = errPreEPBSState
+	ErrCommitteeOverflow     = errCommitteeOverflow
+)

beacon-chain/core/helpers/payload_attestation.go

@@ -0,0 +1,296 @@
+package helpers
+
+import (
+	"context"
+	"slices"
+
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
+	"github.com/prysmaticlabs/prysm/v5/beacon-chain/state"
+	fieldparams "github.com/prysmaticlabs/prysm/v5/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v5/config/params"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/epbs"
+	"github.com/prysmaticlabs/prysm/v5/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v5/crypto/bls"
+	"github.com/prysmaticlabs/prysm/v5/math"
+	eth "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+	"github.com/prysmaticlabs/prysm/v5/time/slots"
+)
+
+var (
+	errNilMessage            = errors.New("nil PayloadAttestationMessage")
+	errNilData               = errors.New("nil PayloadAttestationData")
+	errNilBeaconBlockRoot    = errors.New("nil BeaconBlockRoot")
+	errNilPayloadAttestation = errors.New("nil PayloadAttestation")
+	errNilSignature          = errors.New("nil Signature")
+	errNilAggregationBits    = errors.New("nil AggregationBits")
+	errPreEPBSState          = errors.New("beacon state pre ePBS fork")
+	errCommitteeOverflow     = errors.New("beacon committee of insufficient size")
+)
+
+// ValidateNilPayloadAttestationData checks if any composite field of the
+// payload attestation data is nil
+func ValidateNilPayloadAttestationData(data *eth.PayloadAttestationData) error {
+	if data == nil {
+		return errNilData
+	}
+	if data.BeaconBlockRoot == nil {
+		return errNilBeaconBlockRoot
+	}
+	return nil
+}
+
+// ValidateNilPayloadAttestationMessage checks if any composite field of the
+// payload attestation message is nil
+func ValidateNilPayloadAttestationMessage(att *eth.PayloadAttestationMessage) error {
+	if att == nil {
+		return errNilMessage
+	}
+	if att.Signature == nil {
+		return errNilSignature
+	}
+	return ValidateNilPayloadAttestationData(att.Data)
+}
+
+// ValidateNilPayloadAttestation checks if any composite field of the
+// payload attestation is nil
+func ValidateNilPayloadAttestation(att *eth.PayloadAttestation) error {
+	if att == nil {
+		return errNilPayloadAttestation
+	}
+	if att.AggregationBits == nil {
+		return errNilAggregationBits
+	}
+	if att.Signature == nil {
+		return errNilSignature
+	}
+	return ValidateNilPayloadAttestationData(att.Data)
+}
+
+// InPayloadTimelinessCommittee returns whether the given index belongs to the
+// PTC computed from the passed state.
+func InPayloadTimelinessCommittee(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot, idx primitives.ValidatorIndex) (bool, error) {
+	ptc, err := GetPayloadTimelinessCommittee(ctx, state, slot)
+	if err != nil {
+		return false, err
+	}
+	for _, i := range ptc {
+		if i == idx {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+// GetPayloadTimelinessCommittee returns the PTC for the given slot, computed from the passed state as in the
+// spec function `get_ptc`.
+func GetPayloadTimelinessCommittee(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot) (indices []primitives.ValidatorIndex, err error) {
+	if state.Version() < version.EPBS {
+		return nil, errPreEPBSState
+	}
+	committees, err := BeaconCommittees(ctx, state, slot)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get beacon committees")
+	}
+	committeesPerSlot, membersPerCommittee := PtcAllocation(len(committees))
+	for i, committee := range committees {
+		if uint64(i) >= committeesPerSlot {
+			return
+		}
+		if uint64(len(committee)) < membersPerCommittee {
+			return nil, errCommitteeOverflow
+		}
+		indices = append(indices, committee[:membersPerCommittee]...)
+	}
+	return
+}
+
+// PtcAllocation returns:
+// 1. The number of beacon committees that PTC will borrow from in a slot.
+// 2. The number of validators that PTC will borrow from in a beacon committee.
+func PtcAllocation(slotCommittees int) (committeesPerSlot, membersPerCommittee uint64) {
+	committeesPerSlot = math.LargestPowerOfTwo(math.Min(uint64(slotCommittees), fieldparams.PTCSize))
+	membersPerCommittee = fieldparams.PTCSize / committeesPerSlot
+	return
+}
+
+// GetPayloadAttestingIndices returns the set of attester indices corresponding to the given PayloadAttestation.
+//
+// Spec pseudocode definition:
+//
+//	def get_payload_attesting_indices(state: BeaconState, slot: Slot,
+//		payload_attestation: PayloadAttestation) -> Set[ValidatorIndex]:
+//	"""
+//	Return the set of attesting indices corresponding to ``payload_attestation``.
+//	"""
+//	ptc = get_ptc(state, slot)
+//	return set(index for i, index in enumerate(ptc) if payload_attestation.aggregation_bits[i])
+func GetPayloadAttestingIndices(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot, att *eth.PayloadAttestation) (indices []primitives.ValidatorIndex, err error) {
+	if state.Version() < version.EPBS {
+		return nil, errPreEPBSState
+	}
+
+	ptc, err := GetPayloadTimelinessCommittee(ctx, state, slot)
+	if err != nil {
+		return nil, err
+	}
+
+	for i, validatorIndex := range ptc {
+		if att.AggregationBits.BitAt(uint64(i)) {
+			indices = append(indices, validatorIndex)
+		}
+	}
+
+	return
+}
+
+// GetIndexedPayloadAttestation replaces a PayloadAttestation's AggregationBits with sorted AttestingIndices and returns an IndexedPayloadAttestation.
+//
+// Spec pseudocode definition:
+//
+//	def get_indexed_payload_attestation(state: BeaconState, slot: Slot,
+//		payload_attestation: PayloadAttestation) -> IndexedPayloadAttestation:
+//	"""
+//	Return the indexed payload attestation corresponding to ``payload_attestation``.
+//	"""
+//	attesting_indices = get_payload_attesting_indices(state, slot, payload_attestation)
+//
+//	return IndexedPayloadAttestation(
+//	attesting_indices=sorted(attesting_indices),
+//	data=payload_attestation.data,
+//	signature=payload_attestation.signature,
+//	)
+func GetIndexedPayloadAttestation(ctx context.Context, state state.ReadOnlyBeaconState, slot primitives.Slot, att *eth.PayloadAttestation) (*epbs.IndexedPayloadAttestation, error) {
+	if state.Version() < version.EPBS {
+		return nil, errPreEPBSState
+	}
+
+	attestingIndices, err := GetPayloadAttestingIndices(ctx, state, slot, att)
+	if err != nil {
+		return nil, err
+	}
+
+	slices.Sort(attestingIndices)
+
+	return &epbs.IndexedPayloadAttestation{
+		AttestingIndices: attestingIndices,
+		Data:             att.Data,
+		Signature:        att.Signature,
+	}, nil
+}
+
+// IsValidIndexedPayloadAttestation validates the given IndexedPayloadAttestation.
+//
+// Spec pseudocode definition:
+//
+//	def is_valid_indexed_payload_attestation(
+//		state: BeaconState,
+//		indexed_payload_attestation: IndexedPayloadAttestation) -> bool:
+//	"""
+//	Check if ``indexed_payload_attestation`` is not empty, has sorted and unique indices and has
+//	a valid aggregate signature.
+//	"""
+//	# Verify the data is valid
+//	if indexed_payload_attestation.data.payload_status >= PAYLOAD_INVALID_STATUS:
+//		return False
+//
+//	# Verify indices are sorted and unique
+//	indices = indexed_payload_attestation.attesting_indices
+//	if len(indices) == 0 or not indices == sorted(set(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)
+func IsValidIndexedPayloadAttestation(state state.ReadOnlyBeaconState, att *epbs.IndexedPayloadAttestation) (bool, error) {
+	if state.Version() < version.EPBS {
+		return false, errPreEPBSState
+	}
+
+	// Verify the data is valid.
+	if att.Data.PayloadStatus >= primitives.PAYLOAD_INVALID_STATUS {
+		return false, nil
+	}
+
+	// Verify indices are sorted and unique.
+	indices := att.AttestingIndices
+	slices.Sort(indices)
+	if len(indices) == 0 || !slices.Equal(att.AttestingIndices, indices) {
+		return false, nil
+	}
+
+	// Verify aggregate signature.
+	publicKeys := make([]bls.PublicKey, len(indices))
+	for i, index := range indices {
+		validator, err := state.ValidatorAtIndexReadOnly(index)
+		if err != nil {
+			return false, err
+		}
+
+		publicKeyBytes := validator.PublicKey()
+		publicKey, err := bls.PublicKeyFromBytes(publicKeyBytes[:])
+		if err != nil {
+			return false, err
+		}
+
+		publicKeys[i] = publicKey
+	}
+
+	domain, err := signing.Domain(
+		state.Fork(),
+		slots.ToEpoch(state.Slot()),
+		params.BeaconConfig().DomainPTCAttester,
+		state.GenesisValidatorsRoot(),
+	)
+	if err != nil {
+		return false, err
+	}
+
+	signingRoot, err := signing.ComputeSigningRoot(att.Data, domain)
+	if err != nil {
+		return false, err
+	}
+
+	signature, err := bls.SignatureFromBytes(att.Signature)
+	if err != nil {
+		return false, err
+	}
+
+	return signature.FastAggregateVerify(publicKeys, signingRoot), nil
+}
+
+// ValidatePayloadAttestationMessageSignature verifies the signature of a
+// payload attestation message.
+func ValidatePayloadAttestationMessageSignature(ctx context.Context, st state.ReadOnlyBeaconState, msg *eth.PayloadAttestationMessage) error {
+	if err := ValidateNilPayloadAttestationMessage(msg); err != nil {
+		return err
+	}
+	val, err := st.ValidatorAtIndex(msg.ValidatorIndex)
+	if err != nil {
+		return err
+	}
+	pub, err := bls.PublicKeyFromBytes(val.PublicKey)
+	if err != nil {
+		return err
+	}
+	sig, err := bls.SignatureFromBytes(msg.Signature)
+	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 := signing.ComputeSigningRoot(msg.Data, domain)
+	if err != nil {
+		return err
+	}
+	if !sig.Verify(pub, root[:]) {
+		return signing.ErrSigFailedToVerify
+	}
+	return nil
+}