add time info to building block log

* Upadte geth

* fix c-kzg-4844 c build

* gazelle

* fix deps

* fix again

* fix cli tests

---------

Co-authored-by: Preston Van Loon <pvanloon@offchainlabs.com>
Co-authored-by: nisdas <nishdas93@gmail.com>
Co-authored-by: terence tsao <terence@prysmaticlabs.com>

WORKSPACE

@@ -215,7 +215,7 @@ filegroup(
     url = "https://github.com/ethereum/EIPs/archive/5480440fe51742ed23342b68cf106cefd427e39d.tar.gz",
 )
 
-consensus_spec_version = "v1.4.0-alpha.1"
+consensus_spec_version = "v1.4.0-alpha.2"
 
 bls_test_version = "v0.1.1"
 
@@ -231,7 +231,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "1118a663be4a00ba00f0635eb20287157f2b2f993aed64335bfbcd04af424c2b",
+    sha256 = "bfba887cbe043907adf884cf6d18f2e8a31e34e9245397b84af1f54ed22b706a",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/general.tar.gz" % consensus_spec_version,
 )
 
@@ -247,7 +247,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "acde6e10940d14f22277eda5b55b65a24623ac88e4c7a2e34134a6069f5eea82",
+    sha256 = "9ff77bef0ca1e39bcee2769075c89f0f91fb8f89ad38a1b3e0c31cf6732650ad",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/minimal.tar.gz" % consensus_spec_version,
 )
 
@@ -263,7 +263,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "49c022f3a3478cea849ba8f877a9f7e4c1ded549edddc09993550bbc5bb192e1",
+    sha256 = "fbcc3c9898110c675e5de9c27cb667ad7cadf930db7ebb5c6bba15d7be95bf8a",
     url = "https://github.com/ethereum/consensus-spec-tests/releases/download/%s/mainnet.tar.gz" % consensus_spec_version,
 )
 
@@ -278,7 +278,7 @@ filegroup(
     visibility = ["//visibility:public"],
 )
     """,
-    sha256 = "c3e246ff01f6b7b9e9e41939954a6ff89dfca7297415f88781809165fa83267c",
+    sha256 = "9fff1bcdd0e5857797197800db091c3675b2c11b54f704fe4de1ba683bed7ba5",
     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/BUILD.bazel

@@ -11,12 +11,12 @@ go_library(
     importpath = "github.com/prysmaticlabs/prysm/v4/api/client/builder",
     visibility = ["//visibility:public"],
     deps = [
+        "//config/fieldparams:go_default_library",
         "//consensus-types:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
-        "//math:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//network:go_default_library",
         "//network/authorization:go_default_library",
@@ -40,6 +40,7 @@ go_test(
     data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     deps = [
+        "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/primitives:go_default_library",

api/client/builder/bid.go

@@ -1,14 +1,12 @@
 package builder
 
 import (
-	"math/big"
-
+	"github.com/pkg/errors"
 	ssz "github.com/prysmaticlabs/fastssz"
 	consensus_types "github.com/prysmaticlabs/prysm/v4/consensus-types"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
-	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
-	"github.com/prysmaticlabs/prysm/v4/math"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 )
@@ -24,6 +22,7 @@ type SignedBid interface {
 // Bid is an interface describing the method set of a builder bid.
 type Bid interface {
 	Header() (interfaces.ExecutionData, error)
+	BlindedBlobsBundle() (*enginev1.BlindedBlobsBundle, error)
 	Value() []byte
 	Pubkey() []byte
 	Version() int
@@ -116,6 +115,11 @@ func (b builderBid) Header() (interfaces.ExecutionData, error) {
 	return blocks.WrappedExecutionPayloadHeader(b.p.Header)
 }
 
+// BlindedBlobsBundle --
+func (b builderBid) BlindedBlobsBundle() (*enginev1.BlindedBlobsBundle, error) {
+	return nil, errors.New("blinded blobs bundle not available before Deneb")
+}
+
 // Version --
 func (b builderBid) Version() int {
 	return version.Bellatrix
@@ -162,8 +166,12 @@ func WrappedBuilderBidCapella(p *ethpb.BuilderBidCapella) (Bid, error) {
 // Header returns the execution data interface.
 func (b builderBidCapella) Header() (interfaces.ExecutionData, error) {
 	// We have to convert big endian to little endian because the value is coming from the execution layer.
-	v := big.NewInt(0).SetBytes(bytesutil.ReverseByteOrder(b.p.Value))
-	return blocks.WrappedExecutionPayloadHeaderCapella(b.p.Header, math.WeiToGwei(v))
+	return blocks.WrappedExecutionPayloadHeaderCapella(b.p.Header, blocks.PayloadValueToGwei(b.p.Value))
+}
+
+// BlindedBlobsBundle --
+func (b builderBidCapella) BlindedBlobsBundle() (*enginev1.BlindedBlobsBundle, error) {
+	return nil, errors.New("blinded blobs bundle not available before Deneb")
 }
 
 // Version --
@@ -195,3 +203,90 @@ func (b builderBidCapella) HashTreeRoot() ([32]byte, error) {
 func (b builderBidCapella) HashTreeRootWith(hh *ssz.Hasher) error {
 	return b.p.HashTreeRootWith(hh)
 }
+
+type builderBidDeneb struct {
+	p *ethpb.BuilderBidDeneb
+}
+
+// WrappedBuilderBidDeneb is a constructor which wraps a protobuf bid into an interface.
+func WrappedBuilderBidDeneb(p *ethpb.BuilderBidDeneb) (Bid, error) {
+	w := builderBidDeneb{p: p}
+	if w.IsNil() {
+		return nil, consensus_types.ErrNilObjectWrapped
+	}
+	return w, nil
+}
+
+// Version --
+func (b builderBidDeneb) Version() int {
+	return version.Deneb
+}
+
+// Value --
+func (b builderBidDeneb) Value() []byte {
+	return b.p.Value
+}
+
+// Pubkey --
+func (b builderBidDeneb) Pubkey() []byte {
+	return b.p.Pubkey
+}
+
+// IsNil --
+func (b builderBidDeneb) IsNil() bool {
+	return b.p == nil
+}
+
+// HashTreeRoot --
+func (b builderBidDeneb) HashTreeRoot() ([32]byte, error) {
+	return b.p.HashTreeRoot()
+}
+
+// HashTreeRootWith --
+func (b builderBidDeneb) HashTreeRootWith(hh *ssz.Hasher) error {
+	return b.p.HashTreeRootWith(hh)
+}
+
+// Header --
+func (b builderBidDeneb) Header() (interfaces.ExecutionData, error) {
+	// We have to convert big endian to little endian because the value is coming from the execution layer.
+	return blocks.WrappedExecutionPayloadHeaderDeneb(b.p.Header, blocks.PayloadValueToGwei(b.p.Value))
+}
+
+// BlindedBlobsBundle --
+func (b builderBidDeneb) BlindedBlobsBundle() (*enginev1.BlindedBlobsBundle, error) {
+	return b.p.BlindedBlobsBundle, nil
+}
+
+type signedBuilderBidDeneb struct {
+	p *ethpb.SignedBuilderBidDeneb
+}
+
+// WrappedSignedBuilderBidDeneb is a constructor which wraps a protobuf signed bit into an interface.
+func WrappedSignedBuilderBidDeneb(p *ethpb.SignedBuilderBidDeneb) (SignedBid, error) {
+	w := signedBuilderBidDeneb{p: p}
+	if w.IsNil() {
+		return nil, consensus_types.ErrNilObjectWrapped
+	}
+	return w, nil
+}
+
+// Message --
+func (b signedBuilderBidDeneb) Message() (Bid, error) {
+	return WrappedBuilderBidDeneb(b.p.Message)
+}
+
+// Signature --
+func (b signedBuilderBidDeneb) Signature() []byte {
+	return b.p.Signature
+}
+
+// Version --
+func (b signedBuilderBidDeneb) Version() int {
+	return version.Deneb
+}
+
+// IsNil --
+func (b signedBuilderBidDeneb) IsNil() bool {
+	return b.p == nil
+}

api/client/builder/client.go

@@ -19,6 +19,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/monitoring/tracing"
 	"github.com/prysmaticlabs/prysm/v4/network"
 	"github.com/prysmaticlabs/prysm/v4/network/authorization"
+	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	log "github.com/sirupsen/logrus"
@@ -86,7 +87,7 @@ type BuilderClient interface {
 	NodeURL() string
 	GetHeader(ctx context.Context, slot primitives.Slot, parentHash [32]byte, pubkey [48]byte) (SignedBid, error)
 	RegisterValidator(ctx context.Context, svr []*ethpb.SignedValidatorRegistrationV1) error
-	SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error)
+	SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock, blobs []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error)
 	Status(ctx context.Context) error
 }
 
@@ -220,6 +221,16 @@ func (c *Client) GetHeader(ctx context.Context, slot primitives.Slot, parentHash
 		return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
 	}
 	switch strings.ToLower(v.Version) {
+	case strings.ToLower(version.String(version.Deneb)):
+		hr := &ExecHeaderResponseDeneb{}
+		if err := json.Unmarshal(hb, hr); err != nil {
+			return nil, errors.Wrapf(err, "error unmarshaling the builder GetHeader response, using slot=%d, parentHash=%#x, pubkey=%#x", slot, parentHash, pubkey)
+		}
+		p, err := hr.ToProto()
+		if err != nil {
+			return nil, errors.Wrapf(err, "could not extract proto message from header")
+		}
+		return WrappedSignedBuilderBidDeneb(p)
 	case strings.ToLower(version.String(version.Capella)):
 		hr := &ExecHeaderResponseCapella{}
 		if err := json.Unmarshal(hb, hr); err != nil {
@@ -274,20 +285,20 @@ func (c *Client) RegisterValidator(ctx context.Context, svr []*ethpb.SignedValid
 
 // SubmitBlindedBlock calls the builder API endpoint that binds the validator to the builder and submits the block.
 // The response is the full execution payload used to create the blinded block.
-func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error) {
+func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlySignedBeaconBlock, blobs []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
 	if !sb.IsBlinded() {
-		return nil, errNotBlinded
+		return nil, nil, errNotBlinded
 	}
 	switch sb.Version() {
 	case version.Bellatrix:
 		psb, err := sb.PbBlindedBellatrixBlock()
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not get protobuf block")
+			return nil, nil, errors.Wrapf(err, "could not get protobuf block")
 		}
 		b := &SignedBlindedBeaconBlockBellatrix{SignedBlindedBeaconBlockBellatrix: psb}
 		body, err := json.Marshal(b)
 		if err != nil {
-			return nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockBellatrix value body in SubmitBlindedBlock")
+			return nil, nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockBellatrix value body in SubmitBlindedBlock")
 		}
 
 		versionOpt := func(r *http.Request) {
@@ -296,29 +307,33 @@ func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlyS
 		rb, err := c.do(ctx, http.MethodPost, postBlindedBeaconBlockPath, bytes.NewBuffer(body), versionOpt)
 
 		if err != nil {
-			return nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockBellatrix to the builder api")
+			return nil, nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockBellatrix to the builder api")
 		}
 		ep := &ExecPayloadResponse{}
 		if err := json.Unmarshal(rb, ep); err != nil {
-			return nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlock response")
+			return nil, nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlock response")
 		}
 		if strings.ToLower(ep.Version) != version.String(version.Bellatrix) {
-			return nil, errors.New("not a bellatrix payload")
+			return nil, nil, errors.New("not a bellatrix payload")
 		}
 		p, err := ep.ToProto()
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not extract proto message from payload")
+			return nil, nil, errors.Wrapf(err, "could not extract proto message from payload")
 		}
-		return blocks.WrappedExecutionPayload(p)
+		payload, err := blocks.WrappedExecutionPayload(p)
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "could not wrap execution payload in interface")
+		}
+		return payload, nil, nil
 	case version.Capella:
 		psb, err := sb.PbBlindedCapellaBlock()
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not get protobuf block")
+			return nil, nil, errors.Wrapf(err, "could not get protobuf block")
 		}
 		b := &SignedBlindedBeaconBlockCapella{SignedBlindedBeaconBlockCapella: psb}
 		body, err := json.Marshal(b)
 		if err != nil {
-			return nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockCapella value body in SubmitBlindedBlockCapella")
+			return nil, nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockCapella value body in SubmitBlindedBlockCapella")
 		}
 
 		versionOpt := func(r *http.Request) {
@@ -327,22 +342,61 @@ func (c *Client) SubmitBlindedBlock(ctx context.Context, sb interfaces.ReadOnlyS
 		rb, err := c.do(ctx, http.MethodPost, postBlindedBeaconBlockPath, bytes.NewBuffer(body), versionOpt)
 
 		if err != nil {
-			return nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockCapella to the builder api")
+			return nil, nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockCapella to the builder api")
 		}
 		ep := &ExecPayloadResponseCapella{}
 		if err := json.Unmarshal(rb, ep); err != nil {
-			return nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlockCapella response")
+			return nil, nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlockCapella response")
 		}
 		if strings.ToLower(ep.Version) != version.String(version.Capella) {
-			return nil, errors.New("not a capella payload")
+			return nil, nil, errors.New("not a capella payload")
 		}
 		p, err := ep.ToProto()
 		if err != nil {
-			return nil, errors.Wrapf(err, "could not extract proto message from payload")
+			return nil, nil, errors.Wrapf(err, "could not extract proto message from payload")
 		}
-		return blocks.WrappedExecutionPayloadCapella(p, 0)
+		payload, err := blocks.WrappedExecutionPayloadCapella(p, 0)
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "could not wrap execution payload in interface")
+		}
+		return payload, nil, nil
+	case version.Deneb:
+		psb, err := sb.PbBlindedDenebBlock()
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "could not get protobuf block")
+		}
+
+		b := &ethpb.SignedBlindedBeaconBlockAndBlobsDeneb{Block: psb, Blobs: blobs}
+		body, err := json.Marshal(b)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "error encoding the SignedBlindedBeaconBlockDeneb value body in SubmitBlindedBlockDeneb")
+		}
+
+		versionOpt := func(r *http.Request) {
+			r.Header.Add("Eth-Consensus-Version", version.String(version.Deneb))
+		}
+		rb, err := c.do(ctx, http.MethodPost, postBlindedBeaconBlockPath, bytes.NewBuffer(body), versionOpt)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "error posting the SignedBlindedBeaconBlockDeneb to the builder api")
+		}
+		ep := &ExecPayloadResponseDeneb{}
+		if err := json.Unmarshal(rb, ep); err != nil {
+			return nil, nil, errors.Wrap(err, "error unmarshaling the builder SubmitBlindedBlockDeneb response")
+		}
+		if strings.ToLower(ep.Version) != version.String(version.Deneb) {
+			return nil, nil, errors.New("not a deneb payload")
+		}
+		p, blobBundle, err := ep.ToProto()
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "could not extract proto message from payload")
+		}
+		payload, err := blocks.WrappedExecutionPayloadDeneb(p, 0)
+		if err != nil {
+			return nil, nil, errors.Wrapf(err, "could not wrap execution payload in interface")
+		}
+		return payload, blobBundle, nil
 	default:
-		return nil, fmt.Errorf("unsupported block version %s", version.String(sb.Version()))
+		return nil, nil, fmt.Errorf("unsupported block version %s", version.String(sb.Version()))
 	}
 }
 

api/client/builder/client_test.go

@@ -12,7 +12,9 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/prysmaticlabs/go-bitfield"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	types "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
@@ -125,7 +127,6 @@ func TestClient_GetHeader(t *testing.T) {
 	var slot types.Slot = 23
 	parentHash := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
 	pubkey := ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a")
-
 	t.Run("server error", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
@@ -236,6 +237,52 @@ func TestClient_GetHeader(t *testing.T) {
 		require.DeepEqual(t, bidValue, value.Bytes())
 		require.DeepEqual(t, big.NewInt(0).SetBytes(bidValue), value.Int)
 	})
+	t.Run("deneb", func(t *testing.T) {
+		hc := &http.Client{
+			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+				require.Equal(t, expectedPath, r.URL.Path)
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(bytes.NewBufferString(testExampleHeaderResponseDeneb)),
+					Request:    r.Clone(ctx),
+				}, nil
+			}),
+		}
+		c := &Client{
+			hc:      hc,
+			baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+		}
+		h, err := c.GetHeader(ctx, slot, bytesutil.ToBytes32(parentHash), bytesutil.ToBytes48(pubkey))
+		require.NoError(t, err)
+		expectedWithdrawalsRoot := ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+		bid, err := h.Message()
+		require.NoError(t, err)
+		bidHeader, err := bid.Header()
+		require.NoError(t, err)
+		withdrawalsRoot, err := bidHeader.WithdrawalsRoot()
+		require.NoError(t, err)
+		require.Equal(t, true, bytes.Equal(expectedWithdrawalsRoot, withdrawalsRoot))
+		value, err := stringToUint256("652312848583266388373324160190187140051835877600158453279131187530910662656")
+		require.NoError(t, err)
+		require.Equal(t, fmt.Sprintf("%#x", value.SSZBytes()), fmt.Sprintf("%#x", bid.Value()))
+		bidValue := bytesutil.ReverseByteOrder(bid.Value())
+		require.DeepEqual(t, bidValue, value.Bytes())
+		require.DeepEqual(t, big.NewInt(0).SetBytes(bidValue), value.Int)
+		bundle, err := bid.BlindedBlobsBundle()
+		require.NoError(t, err)
+		require.Equal(t, len(bundle.BlobRoots) <= fieldparams.MaxBlobsPerBlock && len(bundle.BlobRoots) > 0, true)
+		for i := range bundle.BlobRoots {
+			require.Equal(t, len(bundle.BlobRoots[i]) == fieldparams.RootLength, true)
+		}
+		require.Equal(t, len(bundle.KzgCommitments) > 0, true)
+		for i := range bundle.KzgCommitments {
+			require.Equal(t, len(bundle.KzgCommitments[i]) == 48, true)
+		}
+		require.Equal(t, len(bundle.Proofs) > 0, true)
+		for i := range bundle.Proofs {
+			require.Equal(t, len(bundle.Proofs[i]) == 48, true)
+		}
+	})
 	t.Run("unsupported version", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
@@ -277,7 +324,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		}
 		sbbb, err := blocks.NewSignedBeaconBlock(testSignedBlindedBeaconBlockBellatrix(t))
 		require.NoError(t, err)
-		ep, err := c.SubmitBlindedBlock(ctx, sbbb)
+		ep, _, err := c.SubmitBlindedBlock(ctx, sbbb, nil)
 		require.NoError(t, err)
 		require.Equal(t, true, bytes.Equal(ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"), ep.ParentHash()))
 		bfpg, err := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
@@ -303,7 +350,7 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		}
 		sbb, err := blocks.NewSignedBeaconBlock(testSignedBlindedBeaconBlockCapella(t))
 		require.NoError(t, err)
-		ep, err := c.SubmitBlindedBlock(ctx, sbb)
+		ep, _, err := c.SubmitBlindedBlock(ctx, sbb, nil)
 		require.NoError(t, err)
 		withdrawals, err := ep.Withdrawals()
 		require.NoError(t, err)
@@ -313,6 +360,40 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		assert.DeepEqual(t, ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943"), withdrawals[0].Address)
 		assert.Equal(t, uint64(1), withdrawals[0].Amount)
 	})
+	t.Run("deneb", func(t *testing.T) {
+		hc := &http.Client{
+			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
+				require.Equal(t, postBlindedBeaconBlockPath, r.URL.Path)
+				require.Equal(t, "deneb", r.Header.Get("Eth-Consensus-Version"))
+				return &http.Response{
+					StatusCode: http.StatusOK,
+					Body:       io.NopCloser(bytes.NewBufferString(testExampleExecutionPayloadDeneb)),
+					Request:    r.Clone(ctx),
+				}, nil
+			}),
+		}
+		c := &Client{
+			hc:      hc,
+			baseURL: &url.URL{Host: "localhost:3500", Scheme: "http"},
+		}
+		test := testSignedBlindedBeaconBlockAndBlobsDeneb(t)
+		sbb, err := blocks.NewSignedBeaconBlock(test.Block)
+		require.NoError(t, err)
+
+		ep, blobBundle, err := c.SubmitBlindedBlock(ctx, sbb, test.Blobs)
+		require.NoError(t, err)
+		withdrawals, err := ep.Withdrawals()
+		require.NoError(t, err)
+		require.Equal(t, 1, len(withdrawals))
+		assert.Equal(t, uint64(1), withdrawals[0].Index)
+		assert.Equal(t, types.ValidatorIndex(1), withdrawals[0].ValidatorIndex)
+		assert.DeepEqual(t, ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943"), withdrawals[0].Address)
+		assert.Equal(t, uint64(1), withdrawals[0].Amount)
+		require.NotNil(t, blobBundle)
+		require.Equal(t, hexutil.Encode(blobBundle.Blobs[0]), hexutil.Encode(make([]byte, fieldparams.BlobLength)))
+		require.Equal(t, hexutil.Encode(blobBundle.KzgCommitments[0]), "0x8dab030c51e16e84be9caab84ee3d0b8bbec1db4a0e4de76439da8424d9b957370a10a78851f97e4b54d2ce1ab0d686f")
+		require.Equal(t, hexutil.Encode(blobBundle.Proofs[0]), "0xb4021b0de10f743893d4f71e1bf830c019e832958efd6795baf2f83b8699a9eccc5dc99015d8d4d8ec370d0cc333c06a")
+	})
 	t.Run("mismatched versions, expected bellatrix got capella", func(t *testing.T) {
 		hc := &http.Client{
 			Transport: roundtrip(func(r *http.Request) (*http.Response, error) {
@@ -330,13 +411,13 @@ func TestSubmitBlindedBlock(t *testing.T) {
 		}
 		sbbb, err := blocks.NewSignedBeaconBlock(testSignedBlindedBeaconBlockBellatrix(t))
 		require.NoError(t, err)
-		_, err = c.SubmitBlindedBlock(ctx, sbbb)
+		_, _, err = c.SubmitBlindedBlock(ctx, sbbb, nil)
 		require.ErrorContains(t, "not a bellatrix payload", err)
 	})
 	t.Run("not blinded", func(t *testing.T) {
 		sbb, err := blocks.NewSignedBeaconBlock(&eth.SignedBeaconBlockBellatrix{Block: &eth.BeaconBlockBellatrix{Body: &eth.BeaconBlockBodyBellatrix{}}})
 		require.NoError(t, err)
-		_, err = (&Client{}).SubmitBlindedBlock(ctx, sbb)
+		_, _, err = (&Client{}).SubmitBlindedBlock(ctx, sbb, nil)
 		require.ErrorIs(t, err, errNotBlinded)
 	})
 }
@@ -626,6 +707,168 @@ func testSignedBlindedBeaconBlockCapella(t *testing.T) *eth.SignedBlindedBeaconB
 	}
 }
 
+func testSignedBlindedBeaconBlockAndBlobsDeneb(t *testing.T) *eth.SignedBlindedBeaconBlockAndBlobsDeneb {
+	return &eth.SignedBlindedBeaconBlockAndBlobsDeneb{
+		Block: &eth.SignedBlindedBeaconBlockDeneb{
+			Block: &eth.BlindedBeaconBlockDeneb{
+				Slot:          1,
+				ProposerIndex: 1,
+				ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+				Body: &eth.BlindedBeaconBlockBodyDeneb{
+					RandaoReveal: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+					Eth1Data: &eth.Eth1Data{
+						DepositRoot:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						DepositCount: 1,
+						BlockHash:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					},
+					Graffiti: ezDecode(t, "0xdeadbeefc0ffee"),
+					ProposerSlashings: []*eth.ProposerSlashing{
+						{
+							Header_1: &eth.SignedBeaconBlockHeader{
+								Header: &eth.BeaconBlockHeader{
+									Slot:          1,
+									ProposerIndex: 1,
+									ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+								Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+							},
+							Header_2: &eth.SignedBeaconBlockHeader{
+								Header: &eth.BeaconBlockHeader{
+									Slot:          1,
+									ProposerIndex: 1,
+									ParentRoot:    ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									StateRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									BodyRoot:      ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+								Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+							},
+						},
+					},
+					AttesterSlashings: []*eth.AttesterSlashing{
+						{
+							Attestation_1: &eth.IndexedAttestation{
+								AttestingIndices: []uint64{1},
+								Data: &eth.AttestationData{
+									Slot:            1,
+									CommitteeIndex:  1,
+									BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									Source: &eth.Checkpoint{
+										Epoch: 1,
+										Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									},
+									Target: &eth.Checkpoint{
+										Epoch: 1,
+										Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									},
+								},
+								Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+							},
+							Attestation_2: &eth.IndexedAttestation{
+								AttestingIndices: []uint64{1},
+								Data: &eth.AttestationData{
+									Slot:            1,
+									CommitteeIndex:  1,
+									BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									Source: &eth.Checkpoint{
+										Epoch: 1,
+										Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									},
+									Target: &eth.Checkpoint{
+										Epoch: 1,
+										Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+									},
+								},
+								Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+							},
+						},
+					},
+					Attestations: []*eth.Attestation{
+						{
+							AggregationBits: bitfield.Bitlist{0x01},
+							Data: &eth.AttestationData{
+								Slot:            1,
+								CommitteeIndex:  1,
+								BeaconBlockRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								Source: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+								Target: &eth.Checkpoint{
+									Epoch: 1,
+									Root:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								},
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+					},
+					Deposits: []*eth.Deposit{
+						{
+							Proof: [][]byte{ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")},
+							Data: &eth.Deposit_Data{
+								PublicKey:             ezDecode(t, "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"),
+								WithdrawalCredentials: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+								Amount:                1,
+								Signature:             ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+							},
+						},
+					},
+					VoluntaryExits: []*eth.SignedVoluntaryExit{
+						{
+							Exit: &eth.VoluntaryExit{
+								Epoch:          1,
+								ValidatorIndex: 1,
+							},
+							Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+						},
+					},
+					SyncAggregate: &eth.SyncAggregate{
+						SyncCommitteeSignature: make([]byte, 48),
+						SyncCommitteeBits:      bitfield.Bitvector512{0x01},
+					},
+					ExecutionPayloadHeader: &v1.ExecutionPayloadHeaderDeneb{
+						ParentHash:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						FeeRecipient:     ezDecode(t, "0xabcf8e0d4e9587369b2301d0790347320302cc09"),
+						StateRoot:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						ReceiptsRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						LogsBloom:        ezDecode(t, "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
+						PrevRandao:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						BlockNumber:      1,
+						GasLimit:         1,
+						GasUsed:          1,
+						Timestamp:        1,
+						ExtraData:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						BaseFeePerGas:    []byte(strconv.FormatUint(1, 10)),
+						BlockHash:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						TransactionsRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						WithdrawalsRoot:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+						DataGasUsed:      1,
+						ExcessDataGas:    1,
+					},
+				},
+			},
+			Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+		},
+		Blobs: []*eth.SignedBlindedBlobSidecar{
+			{
+				Message: &eth.BlindedBlobSidecar{
+					BlockRoot:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					Index:           0,
+					Slot:            1,
+					BlockParentRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+					ProposerIndex:   1,
+					BlobRoot:        ezDecode(t, "0x24564723180fcb3d994104538d351c8dcbde12d541676bb736cf678018ca4739"),
+					KzgCommitment:   ezDecode(t, "0x8dab030c51e16e84be9caab84ee3d0b8bbec1db4a0e4de76439da8424d9b957370a10a78851f97e4b54d2ce1ab0d686f"),
+					KzgProof:        ezDecode(t, "0xb4021b0de10f743893d4f71e1bf830c019e832958efd6795baf2f83b8699a9eccc5dc99015d8d4d8ec370d0cc333c06a"),
+				},
+				Signature: ezDecode(t, "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"),
+			},
+		},
+	}
+}
+
 func TestRequestLogger(t *testing.T) {
 	wo := WithObserver(&requestLogger{})
 	c, err := NewClient("localhost:3500", wo)

api/client/builder/testing/BUILD.bazel

@@ -10,6 +10,7 @@ go_library(
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
     ],
 )

api/client/builder/testing/mock.go

@@ -7,6 +7,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 )
 
@@ -40,8 +41,8 @@ func (m MockClient) RegisterValidator(_ context.Context, svr []*ethpb.SignedVali
 }
 
 // SubmitBlindedBlock --
-func (MockClient) SubmitBlindedBlock(_ context.Context, _ interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error) {
-	return nil, nil
+func (MockClient) SubmitBlindedBlock(_ context.Context, _ interfaces.ReadOnlySignedBeaconBlock, _ []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+	return nil, nil, nil
 }
 
 // Status --

api/client/builder/types.go

@@ -8,6 +8,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/pkg/errors"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	types "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
@@ -1107,6 +1108,295 @@ func (b *BlindedBeaconBlockBodyCapella) MarshalJSON() ([]byte, error) {
 	})
 }
 
+// ExecHeaderResponseDeneb is the header response for builder API /eth/v1/builder/header/{slot}/{parent_hash}/{pubkey}.
+type ExecHeaderResponseDeneb struct {
+	Data struct {
+		Signature hexutil.Bytes    `json:"signature"`
+		Message   *BuilderBidDeneb `json:"message"`
+	} `json:"data"`
+}
+
+// ToProto creates a SignedBuilderBidDeneb Proto from ExecHeaderResponseDeneb.
+func (ehr *ExecHeaderResponseDeneb) ToProto() (*eth.SignedBuilderBidDeneb, error) {
+	bb, err := ehr.Data.Message.ToProto()
+	if err != nil {
+		return nil, err
+	}
+	return &eth.SignedBuilderBidDeneb{
+		Message:   bb,
+		Signature: bytesutil.SafeCopyBytes(ehr.Data.Signature),
+	}, nil
+}
+
+// ToProto creates a BuilderBidDeneb Proto from BuilderBidDeneb.
+func (bb *BuilderBidDeneb) ToProto() (*eth.BuilderBidDeneb, error) {
+	header, err := bb.Header.ToProto()
+	if err != nil {
+		return nil, err
+	}
+	bundle, err := bb.BlindedBlobsBundle.ToProto()
+	if err != nil {
+		return nil, err
+	}
+	return &eth.BuilderBidDeneb{
+		Header:             header,
+		BlindedBlobsBundle: bundle,
+		Value:              bytesutil.SafeCopyBytes(bb.Value.SSZBytes()),
+		Pubkey:             bytesutil.SafeCopyBytes(bb.Pubkey),
+	}, nil
+}
+
+// BuilderBidDeneb is a field of ExecHeaderResponseDeneb.
+type BuilderBidDeneb struct {
+	Header             *ExecutionPayloadHeaderDeneb `json:"header"`
+	BlindedBlobsBundle *BlindedBlobsBundle          `json:"blinded_blobs_bundle"`
+	Value              Uint256                      `json:"value"`
+	Pubkey             hexutil.Bytes                `json:"pubkey"`
+}
+
+// BlindedBlobsBundle is a field of BuilderBidDeneb and represents the blinded blobs of the associated header.
+type BlindedBlobsBundle struct {
+	KzgCommitments []hexutil.Bytes `json:"commitments"`
+	Proofs         []hexutil.Bytes `json:"proofs"`
+	BlobRoots      []hexutil.Bytes `json:"blob_roots"`
+}
+
+// ToProto creates a BlindedBlobsBundle Proto from BlindedBlobsBundle.
+func (r *BlindedBlobsBundle) ToProto() (*v1.BlindedBlobsBundle, error) {
+	kzg := make([][]byte, len(r.KzgCommitments))
+	for i := range kzg {
+		kzg[i] = bytesutil.SafeCopyBytes(r.KzgCommitments[i])
+	}
+
+	proofs := make([][]byte, len(r.Proofs))
+	for i := range proofs {
+		proofs[i] = bytesutil.SafeCopyBytes(r.Proofs[i])
+	}
+
+	blobRoots := make([][]byte, len(r.BlobRoots))
+	for i := range blobRoots {
+		blobRoots[i] = bytesutil.SafeCopyBytes(r.BlobRoots[i])
+	}
+
+	return &v1.BlindedBlobsBundle{
+		KzgCommitments: kzg,
+		Proofs:         proofs,
+		BlobRoots:      blobRoots,
+	}, nil
+}
+
+// ExecutionPayloadHeaderDeneb a field part of the BuilderBidDeneb.
+type ExecutionPayloadHeaderDeneb struct {
+	ParentHash       hexutil.Bytes `json:"parent_hash"`
+	FeeRecipient     hexutil.Bytes `json:"fee_recipient"`
+	StateRoot        hexutil.Bytes `json:"state_root"`
+	ReceiptsRoot     hexutil.Bytes `json:"receipts_root"`
+	LogsBloom        hexutil.Bytes `json:"logs_bloom"`
+	PrevRandao       hexutil.Bytes `json:"prev_randao"`
+	BlockNumber      Uint64String  `json:"block_number"`
+	GasLimit         Uint64String  `json:"gas_limit"`
+	GasUsed          Uint64String  `json:"gas_used"`
+	Timestamp        Uint64String  `json:"timestamp"`
+	ExtraData        hexutil.Bytes `json:"extra_data"`
+	BaseFeePerGas    Uint256       `json:"base_fee_per_gas"`
+	BlockHash        hexutil.Bytes `json:"block_hash"`
+	TransactionsRoot hexutil.Bytes `json:"transactions_root"`
+	WithdrawalsRoot  hexutil.Bytes `json:"withdrawals_root"`
+	DataGasUsed      Uint64String  `json:"data_gas_used"`   // new in deneb
+	ExcessDataGas    Uint64String  `json:"excess_data_gas"` // new in deneb
+	*v1.ExecutionPayloadHeaderDeneb
+}
+
+// MarshalJSON returns a JSON byte array representing the ExecutionPayloadHeaderDeneb struct.
+func (h *ExecutionPayloadHeaderDeneb) MarshalJSON() ([]byte, error) {
+	type MarshalCaller ExecutionPayloadHeaderDeneb
+	baseFeePerGas, err := sszBytesToUint256(h.ExecutionPayloadHeaderDeneb.BaseFeePerGas)
+	if err != nil {
+		return []byte{}, errors.Wrapf(err, "invalid BaseFeePerGas")
+	}
+	return json.Marshal(&MarshalCaller{
+		ParentHash:       h.ExecutionPayloadHeaderDeneb.ParentHash,
+		FeeRecipient:     h.ExecutionPayloadHeaderDeneb.FeeRecipient,
+		StateRoot:        h.ExecutionPayloadHeaderDeneb.StateRoot,
+		ReceiptsRoot:     h.ExecutionPayloadHeaderDeneb.ReceiptsRoot,
+		LogsBloom:        h.ExecutionPayloadHeaderDeneb.LogsBloom,
+		PrevRandao:       h.ExecutionPayloadHeaderDeneb.PrevRandao,
+		BlockNumber:      Uint64String(h.ExecutionPayloadHeaderDeneb.BlockNumber),
+		GasLimit:         Uint64String(h.ExecutionPayloadHeaderDeneb.GasLimit),
+		GasUsed:          Uint64String(h.ExecutionPayloadHeaderDeneb.GasUsed),
+		Timestamp:        Uint64String(h.ExecutionPayloadHeaderDeneb.Timestamp),
+		ExtraData:        h.ExecutionPayloadHeaderDeneb.ExtraData,
+		BaseFeePerGas:    baseFeePerGas,
+		BlockHash:        h.ExecutionPayloadHeaderDeneb.BlockHash,
+		TransactionsRoot: h.ExecutionPayloadHeaderDeneb.TransactionsRoot,
+		WithdrawalsRoot:  h.ExecutionPayloadHeaderDeneb.WithdrawalsRoot,
+		DataGasUsed:      Uint64String(h.ExecutionPayloadHeaderDeneb.DataGasUsed),
+		ExcessDataGas:    Uint64String(h.ExecutionPayloadHeaderDeneb.ExcessDataGas),
+	})
+}
+
+// UnmarshalJSON takes in a byte array and unmarshals the value into ExecutionPayloadHeaderDeneb.
+func (h *ExecutionPayloadHeaderDeneb) UnmarshalJSON(b []byte) error {
+	type UnmarshalCaller ExecutionPayloadHeaderDeneb
+	uc := &UnmarshalCaller{}
+	if err := json.Unmarshal(b, uc); err != nil {
+		return err
+	}
+	ep := ExecutionPayloadHeaderDeneb(*uc)
+	*h = ep
+	var err error
+	h.ExecutionPayloadHeaderDeneb, err = h.ToProto()
+	return err
+}
+
+// ToProto returns a ExecutionPayloadHeaderDeneb Proto object.
+func (h *ExecutionPayloadHeaderDeneb) ToProto() (*v1.ExecutionPayloadHeaderDeneb, error) {
+	return &v1.ExecutionPayloadHeaderDeneb{
+		ParentHash:       bytesutil.SafeCopyBytes(h.ParentHash),
+		FeeRecipient:     bytesutil.SafeCopyBytes(h.FeeRecipient),
+		StateRoot:        bytesutil.SafeCopyBytes(h.StateRoot),
+		ReceiptsRoot:     bytesutil.SafeCopyBytes(h.ReceiptsRoot),
+		LogsBloom:        bytesutil.SafeCopyBytes(h.LogsBloom),
+		PrevRandao:       bytesutil.SafeCopyBytes(h.PrevRandao),
+		BlockNumber:      uint64(h.BlockNumber),
+		GasLimit:         uint64(h.GasLimit),
+		GasUsed:          uint64(h.GasUsed),
+		Timestamp:        uint64(h.Timestamp),
+		ExtraData:        bytesutil.SafeCopyBytes(h.ExtraData),
+		BaseFeePerGas:    bytesutil.SafeCopyBytes(h.BaseFeePerGas.SSZBytes()),
+		BlockHash:        bytesutil.SafeCopyBytes(h.BlockHash),
+		TransactionsRoot: bytesutil.SafeCopyBytes(h.TransactionsRoot),
+		WithdrawalsRoot:  bytesutil.SafeCopyBytes(h.WithdrawalsRoot),
+		DataGasUsed:      uint64(h.DataGasUsed),
+		ExcessDataGas:    uint64(h.ExcessDataGas),
+	}, nil
+}
+
+// ExecPayloadResponseDeneb the response to the build API /eth/v1/builder/blinded_blocks that includes the version, execution payload object , and blobs bundle object.
+type ExecPayloadResponseDeneb struct {
+	Version string                               `json:"version"`
+	Data    *ExecutionPayloadDenebAndBlobsBundle `json:"data"`
+}
+
+// ExecutionPayloadDenebAndBlobsBundle the main field used in ExecPayloadResponseDeneb.
+type ExecutionPayloadDenebAndBlobsBundle struct {
+	ExecutionPayload *ExecutionPayloadDeneb `json:"execution_payload"`
+	BlobsBundle      *BlobsBundle           `json:"blobs_bundle"`
+}
+
+// ExecutionPayloadDeneb is a field used in ExecutionPayloadDenebAndBlobsBundle.
+type ExecutionPayloadDeneb struct {
+	ParentHash    hexutil.Bytes   `json:"parent_hash"`
+	FeeRecipient  hexutil.Bytes   `json:"fee_recipient"`
+	StateRoot     hexutil.Bytes   `json:"state_root"`
+	ReceiptsRoot  hexutil.Bytes   `json:"receipts_root"`
+	LogsBloom     hexutil.Bytes   `json:"logs_bloom"`
+	PrevRandao    hexutil.Bytes   `json:"prev_randao"`
+	BlockNumber   Uint64String    `json:"block_number"`
+	GasLimit      Uint64String    `json:"gas_limit"`
+	GasUsed       Uint64String    `json:"gas_used"`
+	Timestamp     Uint64String    `json:"timestamp"`
+	ExtraData     hexutil.Bytes   `json:"extra_data"`
+	BaseFeePerGas Uint256         `json:"base_fee_per_gas"`
+	BlockHash     hexutil.Bytes   `json:"block_hash"`
+	Transactions  []hexutil.Bytes `json:"transactions"`
+	Withdrawals   []Withdrawal    `json:"withdrawals"`
+	DataGasUsed   Uint64String    `json:"data_gas_used"`   // new in deneb
+	ExcessDataGas Uint64String    `json:"excess_data_gas"` // new in deneb
+}
+
+// BlobsBundle is a field in ExecutionPayloadDenebAndBlobsBundle.
+type BlobsBundle struct {
+	Commitments []hexutil.Bytes `json:"commitments"`
+	Proofs      []hexutil.Bytes `json:"proofs"`
+	Blobs       []hexutil.Bytes `json:"blobs"`
+}
+
+// ToProto returns a BlobsBundle Proto.
+func (b BlobsBundle) ToProto() (*v1.BlobsBundle, error) {
+	commitments := make([][]byte, len(b.Commitments))
+	for i := range b.Commitments {
+		if len(b.Commitments[i]) != fieldparams.BLSPubkeyLength {
+			return nil, fmt.Errorf("commitment length %d is not %d", len(b.Commitments[i]), fieldparams.BLSPubkeyLength)
+		}
+		commitments[i] = bytesutil.SafeCopyBytes(b.Commitments[i])
+	}
+	proofs := make([][]byte, len(b.Proofs))
+	for i := range b.Proofs {
+		if len(b.Proofs[i]) != fieldparams.BLSPubkeyLength {
+			return nil, fmt.Errorf("proof length %d is not %d", len(b.Proofs[i]), fieldparams.BLSPubkeyLength)
+		}
+		proofs[i] = bytesutil.SafeCopyBytes(b.Proofs[i])
+	}
+	if len(b.Blobs) > fieldparams.MaxBlobsPerBlock {
+		return nil, fmt.Errorf("blobs length %d is more than max %d", len(b.Blobs), fieldparams.MaxBlobsPerBlock)
+	}
+	blobs := make([][]byte, len(b.Blobs))
+	for i := range b.Blobs {
+		if len(b.Blobs[i]) != fieldparams.BlobLength {
+			return nil, fmt.Errorf("blob length %d is not %d", len(b.Blobs[i]), fieldparams.BlobLength)
+		}
+		blobs[i] = bytesutil.SafeCopyBytes(b.Blobs[i])
+	}
+	return &v1.BlobsBundle{
+		KzgCommitments: commitments,
+		Proofs:         proofs,
+		Blobs:          blobs,
+	}, nil
+}
+
+// ToProto returns ExecutionPayloadDeneb Proto and BlobsBundle Proto separately.
+func (r *ExecPayloadResponseDeneb) ToProto() (*v1.ExecutionPayloadDeneb, *v1.BlobsBundle, error) {
+	if r.Data == nil {
+		return nil, nil, errors.New("data field in response is empty")
+	}
+	payload, err := r.Data.ExecutionPayload.ToProto()
+	if err != nil {
+		return nil, nil, err
+	}
+	bundle, err := r.Data.BlobsBundle.ToProto()
+	if err != nil {
+		return nil, nil, err
+	}
+	return payload, bundle, nil
+}
+
+// ToProto returns the ExecutionPayloadDeneb Proto.
+func (p *ExecutionPayloadDeneb) ToProto() (*v1.ExecutionPayloadDeneb, error) {
+	txs := make([][]byte, len(p.Transactions))
+	for i := range p.Transactions {
+		txs[i] = bytesutil.SafeCopyBytes(p.Transactions[i])
+	}
+	withdrawals := make([]*v1.Withdrawal, len(p.Withdrawals))
+	for i, w := range p.Withdrawals {
+		withdrawals[i] = &v1.Withdrawal{
+			Index:          w.Index.Uint64(),
+			ValidatorIndex: types.ValidatorIndex(w.ValidatorIndex.Uint64()),
+			Address:        bytesutil.SafeCopyBytes(w.Address),
+			Amount:         w.Amount.Uint64(),
+		}
+	}
+	return &v1.ExecutionPayloadDeneb{
+		ParentHash:    bytesutil.SafeCopyBytes(p.ParentHash),
+		FeeRecipient:  bytesutil.SafeCopyBytes(p.FeeRecipient),
+		StateRoot:     bytesutil.SafeCopyBytes(p.StateRoot),
+		ReceiptsRoot:  bytesutil.SafeCopyBytes(p.ReceiptsRoot),
+		LogsBloom:     bytesutil.SafeCopyBytes(p.LogsBloom),
+		PrevRandao:    bytesutil.SafeCopyBytes(p.PrevRandao),
+		BlockNumber:   uint64(p.BlockNumber),
+		GasLimit:      uint64(p.GasLimit),
+		GasUsed:       uint64(p.GasUsed),
+		Timestamp:     uint64(p.Timestamp),
+		ExtraData:     bytesutil.SafeCopyBytes(p.ExtraData),
+		BaseFeePerGas: bytesutil.SafeCopyBytes(p.BaseFeePerGas.SSZBytes()),
+		BlockHash:     bytesutil.SafeCopyBytes(p.BlockHash),
+		Transactions:  txs,
+		Withdrawals:   withdrawals,
+		DataGasUsed:   uint64(p.DataGasUsed),
+		ExcessDataGas: uint64(p.ExcessDataGas),
+	}, nil
+}
+
 // ErrorMessage is a JSON representation of the builder API's returned error message.
 type ErrorMessage struct {
 	Code        int      `json:"code"`

api/client/builder/types_test.go

@@ -14,6 +14,7 @@ import (
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/golang/protobuf/proto"
 	"github.com/prysmaticlabs/go-bitfield"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
@@ -116,6 +117,47 @@ var testExampleHeaderResponseCapella = `{
   }
 }`
 
+var testExampleHeaderResponseDeneb = `{
+  "version": "deneb",
+  "data": {
+    "message": {
+      "header": {
+        "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+        "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+        "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "block_number": "1",
+        "gas_limit": "1",
+        "gas_used": "1",
+        "timestamp": "1",
+        "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "base_fee_per_gas": "452312848583266388373324160190187140051835877600158453279131187530910662656",
+		"block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+        "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"data_gas_used": "1",	
+		"excess_data_gas": "1"	
+      },
+      "blinded_blobs_bundle": {
+        "commitments": [
+          "0x8dab030c51e16e84be9caab84ee3d0b8bbec1db4a0e4de76439da8424d9b957370a10a78851f97e4b54d2ce1ab0d686f"
+        ],
+        "proofs": [
+          "0xb4021b0de10f743893d4f71e1bf830c019e832958efd6795baf2f83b8699a9eccc5dc99015d8d4d8ec370d0cc333c06a"
+        ],
+        "blob_roots": [
+          "0x24564723180fcb3d994104538d351c8dcbde12d541676bb736cf678018ca4739"
+        ]
+      },
+      "value": "652312848583266388373324160190187140051835877600158453279131187530910662656",
+      "pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+    },
+    "signature": "0x1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505cc411d61252fb6cb3fa0017b679f8bb2305b26a285fa2737f175668d0dff91cc1b66ac1fb663c9bc59509846d6ec05345bd908eda73e670af888da41af171505"
+  }
+}`
+
 var testExampleHeaderResponseUnknownVersion = `{
   "version": "bad",
   "data": {
@@ -518,6 +560,51 @@ var testExampleExecutionPayloadCapella = `{
   }
 }`
 
+var testExampleExecutionPayloadDeneb = fmt.Sprintf(`{
+  "version": "deneb",
+  "data": {
+	"execution_payload":{
+		"parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+		"state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+		"prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"block_number": "1",
+		"gas_limit": "1",
+		"gas_used": "1",
+		"timestamp": "1",
+		"extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"base_fee_per_gas": "452312848583266388373324160190187140051835877600158453279131187530910662656",
+		"block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+		"transactions": [
+		  "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+		],
+		"withdrawals": [
+		  {
+			"index": "1",
+			"validator_index": "1",
+			"address": "0xcf8e0d4e9587369b2301d0790347320302cc0943",
+			"amount": "1"
+		  }
+		],
+		"data_gas_used": "2",
+ 		"excess_data_gas": "3"
+	  },
+	"blobs_bundle": {
+      "commitments": [
+        "0x8dab030c51e16e84be9caab84ee3d0b8bbec1db4a0e4de76439da8424d9b957370a10a78851f97e4b54d2ce1ab0d686f"
+      ],
+      "proofs": [
+        "0xb4021b0de10f743893d4f71e1bf830c019e832958efd6795baf2f83b8699a9eccc5dc99015d8d4d8ec370d0cc333c06a"
+      ],
+      "blobs": [
+        "%s"
+      ]
+    }
+  }
+}`, hexutil.Encode(make([]byte, fieldparams.BlobLength)))
+
 func TestExecutionPayloadResponseUnmarshal(t *testing.T) {
 	epr := &ExecPayloadResponse{}
 	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayload), epr))
@@ -689,6 +776,107 @@ func TestExecutionPayloadResponseCapellaUnmarshal(t *testing.T) {
 	assert.Equal(t, uint64(1), w.Amount.Uint64())
 }
 
+func TestExecutionPayloadResponseDenebUnmarshal(t *testing.T) {
+	epr := &ExecPayloadResponseDeneb{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayloadDeneb), epr))
+	cases := []struct {
+		expected string
+		actual   string
+		name     string
+	}{
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.ParentHash),
+			name:     "ExecPayloadResponse.ExecutionPayload.ParentHash",
+		},
+		{
+			expected: "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.FeeRecipient),
+			name:     "ExecPayloadResponse.ExecutionPayload.FeeRecipient",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.StateRoot),
+			name:     "ExecPayloadResponse.ExecutionPayload.StateRoot",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.ReceiptsRoot),
+			name:     "ExecPayloadResponse.ExecutionPayload.ReceiptsRoot",
+		},
+		{
+			expected: "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.LogsBloom),
+			name:     "ExecPayloadResponse.ExecutionPayload.LogsBloom",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.PrevRandao),
+			name:     "ExecPayloadResponse.ExecutionPayload.PrevRandao",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.BlockNumber),
+			name:     "ExecPayloadResponse.ExecutionPayload.BlockNumber",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.GasLimit),
+			name:     "ExecPayloadResponse.ExecutionPayload.GasLimit",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.GasUsed),
+			name:     "ExecPayloadResponse.ExecutionPayload.GasUsed",
+		},
+		{
+			expected: "1",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.Timestamp),
+			name:     "ExecPayloadResponse.ExecutionPayload.Timestamp",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.ExtraData),
+			name:     "ExecPayloadResponse.ExecutionPayload.ExtraData",
+		},
+		{
+			expected: "452312848583266388373324160190187140051835877600158453279131187530910662656",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.BaseFeePerGas),
+			name:     "ExecPayloadResponse.ExecutionPayload.BaseFeePerGas",
+		},
+		{
+			expected: "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+			actual:   hexutil.Encode(epr.Data.ExecutionPayload.BlockHash),
+			name:     "ExecPayloadResponse.ExecutionPayload.BlockHash",
+		},
+		{
+			expected: "2",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.DataGasUsed),
+			name:     "ExecPayloadResponse.ExecutionPayload.DataGasUsed",
+		},
+		{
+			expected: "3",
+			actual:   fmt.Sprintf("%d", epr.Data.ExecutionPayload.ExcessDataGas),
+			name:     "ExecPayloadResponse.ExecutionPayload.ExcessDataGas",
+		},
+	}
+	for _, c := range cases {
+		require.Equal(t, c.expected, c.actual, fmt.Sprintf("unexpected value for field %s", c.name))
+	}
+	require.Equal(t, 1, len(epr.Data.ExecutionPayload.Transactions))
+	txHash := "0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86"
+	require.Equal(t, txHash, hexutil.Encode(epr.Data.ExecutionPayload.Transactions[0]))
+
+	require.Equal(t, 1, len(epr.Data.ExecutionPayload.Withdrawals))
+	w := epr.Data.ExecutionPayload.Withdrawals[0]
+	assert.Equal(t, uint64(1), w.Index.Uint64())
+	assert.Equal(t, uint64(1), w.ValidatorIndex.Uint64())
+	assert.DeepEqual(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943", w.Address.String())
+	assert.Equal(t, uint64(1), w.Amount.Uint64())
+	assert.Equal(t, uint64(2), uint64(epr.Data.ExecutionPayload.DataGasUsed))
+	assert.Equal(t, uint64(3), uint64(epr.Data.ExecutionPayload.ExcessDataGas))
+}
+
 func TestExecutionPayloadResponseToProto(t *testing.T) {
 	hr := &ExecPayloadResponse{}
 	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayload), hr))
@@ -796,6 +984,85 @@ func TestExecutionPayloadResponseCapellaToProto(t *testing.T) {
 
 }
 
+func TestExecutionPayloadResponseDenebToProto(t *testing.T) {
+	hr := &ExecPayloadResponseDeneb{}
+	require.NoError(t, json.Unmarshal([]byte(testExampleExecutionPayloadDeneb), hr))
+	p, blobsBundle, err := hr.ToProto()
+	require.NoError(t, err)
+
+	parentHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	feeRecipient, err := hexutil.Decode("0xabcf8e0d4e9587369b2301d0790347320302cc09")
+	require.NoError(t, err)
+	stateRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	receiptsRoot, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	logsBloom, err := hexutil.Decode("0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000")
+	require.NoError(t, err)
+	prevRandao, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	extraData, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+	blockHash, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2")
+	require.NoError(t, err)
+
+	tx, err := hexutil.Decode("0x02f878831469668303f51d843b9ac9f9843b9aca0082520894c93269b73096998db66be0441e836d873535cb9c8894a19041886f000080c001a031cc29234036afbf9a1fb9476b463367cb1f957ac0b919b69bbc798436e604aaa018c4e9c3914eb27aadd0b91e10b18655739fcf8c1fc398763a9f1beecb8ddc86")
+	require.NoError(t, err)
+	txList := [][]byte{tx}
+	address, err := hexutil.Decode("0xcf8e0d4e9587369b2301d0790347320302cc0943")
+	require.NoError(t, err)
+
+	bfpg, err := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	require.NoError(t, err)
+	expected := &v1.ExecutionPayloadDeneb{
+		ParentHash:    parentHash,
+		FeeRecipient:  feeRecipient,
+		StateRoot:     stateRoot,
+		ReceiptsRoot:  receiptsRoot,
+		LogsBloom:     logsBloom,
+		PrevRandao:    prevRandao,
+		BlockNumber:   1,
+		GasLimit:      1,
+		GasUsed:       1,
+		Timestamp:     1,
+		ExtraData:     extraData,
+		BaseFeePerGas: bfpg.SSZBytes(),
+		BlockHash:     blockHash,
+		Transactions:  txList,
+		Withdrawals: []*v1.Withdrawal{
+			{
+				Index:          1,
+				ValidatorIndex: 1,
+				Address:        address,
+				Amount:         1,
+			},
+		},
+		DataGasUsed:   2,
+		ExcessDataGas: 3,
+	}
+	require.DeepEqual(t, expected, p)
+	commitment, err := hexutil.Decode("0x8dab030c51e16e84be9caab84ee3d0b8bbec1db4a0e4de76439da8424d9b957370a10a78851f97e4b54d2ce1ab0d686f")
+	require.NoError(t, err)
+	proof, err := hexutil.Decode("0xb4021b0de10f743893d4f71e1bf830c019e832958efd6795baf2f83b8699a9eccc5dc99015d8d4d8ec370d0cc333c06a")
+	require.NoError(t, err)
+
+	expectedBlobs := &v1.BlobsBundle{
+		KzgCommitments: [][]byte{
+			commitment,
+		},
+		Proofs: [][]byte{
+			proof,
+		},
+		Blobs: [][]byte{
+			make([]byte, fieldparams.BlobLength),
+		},
+	}
+
+	require.DeepEqual(t, blobsBundle, expectedBlobs)
+
+}
+
 func pbEth1Data() *eth.Eth1Data {
 	return &eth.Eth1Data{
 		DepositRoot:  make([]byte, 32),
@@ -1026,6 +1293,30 @@ func pbExecutionPayloadHeaderCapella(t *testing.T) *v1.ExecutionPayloadHeaderCap
 	}
 }
 
+func pbExecutionPayloadHeaderDeneb(t *testing.T) *v1.ExecutionPayloadHeaderDeneb {
+	bfpg, err := stringToUint256("452312848583266388373324160190187140051835877600158453279131187530910662656")
+	require.NoError(t, err)
+	return &v1.ExecutionPayloadHeaderDeneb{
+		ParentHash:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		FeeRecipient:     ezDecode(t, "0xabcf8e0d4e9587369b2301d0790347320302cc09"),
+		StateRoot:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		ReceiptsRoot:     ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		LogsBloom:        ezDecode(t, "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"),
+		PrevRandao:       ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		BlockNumber:      1,
+		GasLimit:         1,
+		GasUsed:          1,
+		Timestamp:        1,
+		ExtraData:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		BaseFeePerGas:    bfpg.SSZBytes(),
+		BlockHash:        ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		TransactionsRoot: ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		WithdrawalsRoot:  ezDecode(t, "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"),
+		DataGasUsed:      1,
+		ExcessDataGas:    1,
+	}
+}
+
 func TestExecutionPayloadHeader_MarshalJSON(t *testing.T) {
 	h := &ExecutionPayloadHeader{
 		ExecutionPayloadHeader: pbExecutionPayloadHeader(t),
@@ -1046,6 +1337,16 @@ func TestExecutionPayloadHeaderCapella_MarshalJSON(t *testing.T) {
 	require.Equal(t, expected, string(b))
 }
 
+func TestExecutionPayloadHeaderDeneb_MarshalJSON(t *testing.T) {
+	h := &ExecutionPayloadHeaderDeneb{
+		ExecutionPayloadHeaderDeneb: pbExecutionPayloadHeaderDeneb(t),
+	}
+	b, err := json.Marshal(h)
+	require.NoError(t, err)
+	expected := `{"parent_hash":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","fee_recipient":"0xabcf8e0d4e9587369b2301d0790347320302cc09","state_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","receipts_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","logs_bloom":"0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000","prev_randao":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","block_number":"1","gas_limit":"1","gas_used":"1","timestamp":"1","extra_data":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","base_fee_per_gas":"452312848583266388373324160190187140051835877600158453279131187530910662656","block_hash":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","transactions_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","withdrawals_root":"0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2","data_gas_used":"1","excess_data_gas":"1"}`
+	require.Equal(t, expected, string(b))
+}
+
 var testBuilderBid = `{
     "version":"bellatrix",
 	"data":{

beacon-chain/blockchain/execution_engine.go

@@ -210,7 +210,18 @@ func (s *Service) notifyNewPayload(ctx context.Context, preStateVersion int,
 	if err != nil {
 		return false, errors.Wrap(invalidBlock{error: err}, "could not get execution payload")
 	}
-	lastValidHash, err := s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload)
+
+	var lastValidHash []byte
+	if blk.Version() >= version.Deneb {
+		_, err = blk.Block().Body().BlobKzgCommitments()
+		if err != nil {
+			return false, errors.Wrap(invalidBlock{error: err}, "could not get blob kzg commitments")
+		}
+		// TODO: Convert kzg commitment to version hashes and feed to below
+		lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, [][32]byte{})
+	} else {
+		lastValidHash, err = s.cfg.ExecutionEngineCaller.NewPayload(ctx, payload, [][32]byte{} /*empty version hashes before Deneb*/)
+	}
 	switch err {
 	case nil:
 		newPayloadValidNodeCount.Inc()
@@ -310,7 +321,7 @@ func (s *Service) getPayloadAttribute(ctx context.Context, st state.BeaconState,
 
 	var attr payloadattribute.Attributer
 	switch st.Version() {
-	case version.Capella:
+	case version.Capella, version.Deneb:
 		withdrawals, err := st.ExpectedWithdrawals()
 		if err != nil {
 			log.WithError(err).Error("Could not get expected withdrawals to get payload attribute")

beacon-chain/blockchain/execution_engine_test.go

@@ -860,6 +860,42 @@ func Test_GetPayloadAttributeV2(t *testing.T) {
 	require.Equal(t, 0, len(a))
 }
 
+func Test_GetPayloadAttributeDeneb(t *testing.T) {
+	service, tr := minimalTestService(t, WithProposerIdsCache(cache.NewProposerPayloadIDsCache()))
+	ctx := tr.ctx
+
+	st, _ := util.DeterministicGenesisStateDeneb(t, 1)
+	hasPayload, _, vId := service.getPayloadAttribute(ctx, st, 0, []byte{})
+	require.Equal(t, false, hasPayload)
+	require.Equal(t, primitives.ValidatorIndex(0), vId)
+
+	// Cache hit, advance state, no fee recipient
+	suggestedVid := primitives.ValidatorIndex(1)
+	slot := primitives.Slot(1)
+	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
+	hook := logTest.NewGlobal()
+	hasPayload, attr, vId := service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
+	require.Equal(t, true, hasPayload)
+	require.Equal(t, suggestedVid, vId)
+	require.Equal(t, params.BeaconConfig().EthBurnAddressHex, common.BytesToAddress(attr.SuggestedFeeRecipient()).String())
+	require.LogsContain(t, hook, "Fee recipient is currently using the burn address")
+	a, err := attr.Withdrawals()
+	require.NoError(t, err)
+	require.Equal(t, 0, len(a))
+
+	// Cache hit, advance state, has fee recipient
+	suggestedAddr := common.HexToAddress("123")
+	require.NoError(t, service.cfg.BeaconDB.SaveFeeRecipientsByValidatorIDs(ctx, []primitives.ValidatorIndex{suggestedVid}, []common.Address{suggestedAddr}))
+	service.cfg.ProposerSlotIndexCache.SetProposerAndPayloadIDs(slot, suggestedVid, [8]byte{}, [32]byte{})
+	hasPayload, attr, vId = service.getPayloadAttribute(ctx, st, slot, params.BeaconConfig().ZeroHash[:])
+	require.Equal(t, true, hasPayload)
+	require.Equal(t, suggestedVid, vId)
+	require.Equal(t, suggestedAddr, common.BytesToAddress(attr.SuggestedFeeRecipient()))
+	a, err = attr.Withdrawals()
+	require.NoError(t, err)
+	require.Equal(t, 0, len(a))
+}
+
 func Test_UpdateLastValidatedCheckpoint(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	params.OverrideBeaconConfig(params.MainnetConfig())

beacon-chain/blockchain/receive_block.go

@@ -33,6 +33,7 @@ type BlockReceiver interface {
 	ReceiveBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock, blockRoot [32]byte) error
 	ReceiveBlockBatch(ctx context.Context, blocks []interfaces.ReadOnlySignedBeaconBlock, blkRoots [][32]byte) error
 	HasBlock(ctx context.Context, root [32]byte) bool
+	RecentBlockSlot(root [32]byte) (primitives.Slot, error)
 }
 
 // SlashingReceiver interface defines the methods of chain service for receiving validated slashing over the wire.
@@ -206,6 +207,11 @@ func (s *Service) HasBlock(ctx context.Context, root [32]byte) bool {
 	return s.hasBlockInInitSyncOrDB(ctx, root)
 }
 
+// RecentBlockSlot returns block slot form fork choice store
+func (s *Service) RecentBlockSlot(root [32]byte) (primitives.Slot, error) {
+	return s.cfg.ForkChoiceStore.Slot(root)
+}
+
 // ReceiveAttesterSlashing receives an attester slashing and inserts it to forkchoice
 func (s *Service) ReceiveAttesterSlashing(ctx context.Context, slashing *ethpb.AttesterSlashing) {
 	s.cfg.ForkChoiceStore.Lock()

beacon-chain/blockchain/setup_test.go

@@ -52,6 +52,11 @@ func (mb *mockBroadcaster) BroadcastSyncCommitteeMessage(_ context.Context, _ ui
 	return nil
 }
 
+func (mb *mockBroadcaster) BroadcastBlob(_ context.Context, _ uint64, _ *ethpb.SignedBlobSidecar) error {
+	mb.broadcastCalled = true
+	return nil
+}
+
 func (mb *mockBroadcaster) BroadcastBLSChanges(_ context.Context, _ []*ethpb.SignedBLSToExecutionChange) {
 }
 

beacon-chain/blockchain/testing/mock.go

@@ -69,6 +69,7 @@ type ChainService struct {
 	OptimisticCheckRootReceived [32]byte
 	FinalizedRoots              map[[32]byte]bool
 	OptimisticRoots             map[[32]byte]bool
+	BlockSlot                   primitives.Slot
 }
 
 func (s *ChainService) Ancestor(ctx context.Context, root []byte, slot primitives.Slot) ([]byte, error) {
@@ -389,6 +390,11 @@ func (s *ChainService) HasBlock(ctx context.Context, rt [32]byte) bool {
 	return s.InitSyncBlockRoots[rt]
 }
 
+// RecentBlockSlot mocks the same method in the chain service.
+func (s *ChainService) RecentBlockSlot([32]byte) (primitives.Slot, error) {
+	return s.BlockSlot, nil
+}
+
 // HeadGenesisValidatorsRoot mocks HeadGenesisValidatorsRoot method in chain service.
 func (_ *ChainService) HeadGenesisValidatorsRoot() [32]byte {
 	return [32]byte{}

beacon-chain/builder/BUILD.bazel

@@ -15,10 +15,12 @@ go_library(
         "//beacon-chain/cache:go_default_library",
         "//beacon-chain/db:go_default_library",
         "//cmd/beacon-chain/flags:go_default_library",
+        "//config/fieldparams:go_default_library",
         "//consensus-types/interfaces:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//monitoring/tracing:go_default_library",
+        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
         "@com_github_prometheus_client_golang//prometheus:go_default_library",

beacon-chain/builder/service.go

@@ -2,6 +2,7 @@ package builder
 
 import (
 	"context"
+	"fmt"
 	"reflect"
 	"time"
 
@@ -10,10 +11,12 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	"github.com/prysmaticlabs/prysm/v4/monitoring/tracing"
+	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	log "github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -24,7 +27,7 @@ var ErrNoBuilder = errors.New("builder endpoint not configured")
 
 // BlockBuilder defines the interface for interacting with the block builder
 type BlockBuilder interface {
-	SubmitBlindedBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error)
+	SubmitBlindedBlock(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock, blobs []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error)
 	GetHeader(ctx context.Context, slot primitives.Slot, parentHash [32]byte, pubKey [48]byte) (builder.SignedBid, error)
 	RegisterValidator(ctx context.Context, reg []*ethpb.SignedValidatorRegistrationV1) error
 	RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error)
@@ -87,7 +90,7 @@ func (s *Service) Stop() error {
 }
 
 // SubmitBlindedBlock submits a blinded block to the builder relay network.
-func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error) {
+func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlySignedBeaconBlock, blobs []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
 	ctx, span := trace.StartSpan(ctx, "builder.SubmitBlindedBlock")
 	defer span.End()
 	start := time.Now()
@@ -95,10 +98,13 @@ func (s *Service) SubmitBlindedBlock(ctx context.Context, b interfaces.ReadOnlyS
 		submitBlindedBlockLatency.Observe(float64(time.Since(start).Milliseconds()))
 	}()
 	if s.c == nil {
-		return nil, ErrNoBuilder
+		return nil, nil, ErrNoBuilder
+	}
+	if uint64(len(blobs)) > fieldparams.MaxBlobsPerBlock {
+		return nil, nil, fmt.Errorf("blob count %d beyond max limit of %d", len(blobs), fieldparams.MaxBlobsPerBlock)
 	}
 
-	return s.c.SubmitBlindedBlock(ctx, b)
+	return s.c.SubmitBlindedBlock(ctx, b, blobs)
 }
 
 // GetHeader retrieves the header for a given slot and parent hash from the builder relay network.

beacon-chain/builder/service_test.go

@@ -62,7 +62,7 @@ func Test_BuilderMethodsWithouClient(t *testing.T) {
 	_, err = s.GetHeader(context.Background(), 0, [32]byte{}, [48]byte{})
 	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
 
-	_, err = s.SubmitBlindedBlock(context.Background(), nil)
+	_, _, err = s.SubmitBlindedBlock(context.Background(), nil, nil)
 	assert.ErrorContains(t, ErrNoBuilder.Error(), err)
 
 	err = s.RegisterValidator(context.Background(), nil)

beacon-chain/builder/testing/BUILD.bazel

@@ -16,6 +16,7 @@ go_library(
         "//consensus-types/primitives:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
+        "//runtime/version:go_default_library",
         "//time/slots:go_default_library",
         "@com_github_pkg_errors//:go_default_library",
     ],

beacon-chain/builder/testing/mock.go

@@ -13,6 +13,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	v1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 )
 
@@ -26,9 +27,12 @@ type MockBuilderService struct {
 	HasConfigured         bool
 	Payload               *v1.ExecutionPayload
 	PayloadCapella        *v1.ExecutionPayloadCapella
+	PayloadDeneb          *v1.ExecutionPayloadDeneb
+	BlobBundle            *v1.BlobsBundle
 	ErrSubmitBlindedBlock error
 	Bid                   *ethpb.SignedBuilderBid
 	BidCapella            *ethpb.SignedBuilderBidCapella
+	BidDeneb              *ethpb.SignedBuilderBidDeneb
 	RegistrationCache     *cache.RegistrationCache
 	ErrGetHeader          error
 	ErrRegisterValidator  error
@@ -41,23 +45,36 @@ func (s *MockBuilderService) Configured() bool {
 }
 
 // SubmitBlindedBlock for mocking.
-func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, _ interfaces.ReadOnlySignedBeaconBlock) (interfaces.ExecutionData, error) {
-	if s.Payload != nil {
+func (s *MockBuilderService) SubmitBlindedBlock(_ context.Context, b interfaces.ReadOnlySignedBeaconBlock, _ []*ethpb.SignedBlindedBlobSidecar) (interfaces.ExecutionData, *v1.BlobsBundle, error) {
+	switch b.Version() {
+	case version.Bellatrix:
 		w, err := blocks.WrappedExecutionPayload(s.Payload)
 		if err != nil {
-			return nil, errors.Wrap(err, "could not wrap payload")
+			return nil, nil, errors.Wrap(err, "could not wrap payload")
 		}
-		return w, s.ErrSubmitBlindedBlock
+		return w, nil, s.ErrSubmitBlindedBlock
+	case version.Capella:
+		w, err := blocks.WrappedExecutionPayloadCapella(s.PayloadCapella, 0)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "could not wrap capella payload")
+		}
+		return w, nil, s.ErrSubmitBlindedBlock
+	case version.Deneb:
+		w, err := blocks.WrappedExecutionPayloadDeneb(s.PayloadDeneb, 0)
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "could not wrap deneb payload")
+		}
+		return w, s.BlobBundle, s.ErrSubmitBlindedBlock
+	default:
+		return nil, nil, errors.New("unknown block version for mocking")
 	}
-	w, err := blocks.WrappedExecutionPayloadCapella(s.PayloadCapella, 0)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not wrap capella payload")
-	}
-	return w, s.ErrSubmitBlindedBlock
 }
 
 // GetHeader for mocking.
 func (s *MockBuilderService) GetHeader(_ context.Context, slot primitives.Slot, _ [32]byte, _ [48]byte) (builder.SignedBid, error) {
+	if slots.ToEpoch(slot) >= params.BeaconConfig().DenebForkEpoch || s.BidDeneb != nil {
+		return builder.WrappedSignedBuilderBidDeneb(s.BidDeneb)
+	}
 	if slots.ToEpoch(slot) >= params.BeaconConfig().CapellaForkEpoch || s.BidCapella != nil {
 		return builder.WrappedSignedBuilderBidCapella(s.BidCapella)
 	}

beacon-chain/core/blocks/genesis.go

@@ -145,6 +145,40 @@ func NewGenesisBlockForState(ctx context.Context, st state.BeaconState) (interfa
 			},
 			Signature: params.BeaconConfig().EmptySignature[:],
 		})
+	case *ethpb.BeaconStateDeneb:
+		return blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockDeneb{
+			Block: &ethpb.BeaconBlockDeneb{
+				ParentRoot: params.BeaconConfig().ZeroHash[:],
+				StateRoot:  root[:],
+				Body: &ethpb.BeaconBlockBodyDeneb{
+					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),
+					},
+					ExecutionPayload: &enginev1.ExecutionPayloadDeneb{ // Deneb difference.
+						ParentHash:    make([]byte, 32),
+						FeeRecipient:  make([]byte, 20),
+						StateRoot:     make([]byte, 32),
+						ReceiptsRoot:  make([]byte, 32),
+						LogsBloom:     make([]byte, 256),
+						PrevRandao:    make([]byte, 32),
+						BaseFeePerGas: make([]byte, 32),
+						BlockHash:     make([]byte, 32),
+						Transactions:  make([][]byte, 0),
+						Withdrawals:   make([]*enginev1.Withdrawal, 0),
+					},
+					BlsToExecutionChanges: make([]*ethpb.SignedBLSToExecutionChange, 0),
+					BlobKzgCommitments:    make([][]byte, 0),
+				},
+			},
+			Signature: params.BeaconConfig().EmptySignature[:],
+		})
 	default:
 		return nil, ErrUnrecognizedState
 	}

beacon-chain/core/deneb/BUILD.bazel

@@ -0,0 +1,30 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["upgrade.go"],
+    importpath = "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/deneb",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//beacon-chain/core/time:go_default_library",
+        "//beacon-chain/state:go_default_library",
+        "//beacon-chain/state/state-native:go_default_library",
+        "//config/params:go_default_library",
+        "//proto/engine/v1:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["upgrade_test.go"],
+    deps = [
+        ":go_default_library",
+        "//beacon-chain/core/time:go_default_library",
+        "//config/params: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",
+    ],
+)

beacon-chain/core/deneb/upgrade.go

@@ -0,0 +1,115 @@
+package deneb
+
+import (
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/time"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
+	state_native "github.com/prysmaticlabs/prysm/v4/beacon-chain/state/state-native"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+)
+
+// UpgradeToDeneb updates inputs a generic state to return the version Deneb state.
+func UpgradeToDeneb(state state.BeaconState) (state.BeaconState, error) {
+	epoch := time.CurrentEpoch(state)
+
+	currentSyncCommittee, err := state.CurrentSyncCommittee()
+	if err != nil {
+		return nil, err
+	}
+	nextSyncCommittee, err := state.NextSyncCommittee()
+	if err != nil {
+		return nil, err
+	}
+	prevEpochParticipation, err := state.PreviousEpochParticipation()
+	if err != nil {
+		return nil, err
+	}
+	currentEpochParticipation, err := state.CurrentEpochParticipation()
+	if err != nil {
+		return nil, err
+	}
+	inactivityScores, err := state.InactivityScores()
+	if err != nil {
+		return nil, err
+	}
+	payloadHeader, err := state.LatestExecutionPayloadHeader()
+	if err != nil {
+		return nil, err
+	}
+	txRoot, err := payloadHeader.TransactionsRoot()
+	if err != nil {
+		return nil, err
+	}
+	wdRoot, err := payloadHeader.WithdrawalsRoot()
+	if err != nil {
+		return nil, err
+	}
+	wi, err := state.NextWithdrawalIndex()
+	if err != nil {
+		return nil, err
+	}
+	vi, err := state.NextWithdrawalValidatorIndex()
+	if err != nil {
+		return nil, err
+	}
+	summaries, err := state.HistoricalSummaries()
+	if err != nil {
+		return nil, err
+	}
+
+	s := &ethpb.BeaconStateDeneb{
+		GenesisTime:           state.GenesisTime(),
+		GenesisValidatorsRoot: state.GenesisValidatorsRoot(),
+		Slot:                  state.Slot(),
+		Fork: &ethpb.Fork{
+			PreviousVersion: state.Fork().CurrentVersion,
+			CurrentVersion:  params.BeaconConfig().DenebForkVersion,
+			Epoch:           epoch,
+		},
+		LatestBlockHeader:           state.LatestBlockHeader(),
+		BlockRoots:                  state.BlockRoots(),
+		StateRoots:                  state.StateRoots(),
+		HistoricalRoots:             [][]byte{},
+		Eth1Data:                    state.Eth1Data(),
+		Eth1DataVotes:               state.Eth1DataVotes(),
+		Eth1DepositIndex:            state.Eth1DepositIndex(),
+		Validators:                  state.Validators(),
+		Balances:                    state.Balances(),
+		RandaoMixes:                 state.RandaoMixes(),
+		Slashings:                   state.Slashings(),
+		PreviousEpochParticipation:  prevEpochParticipation,
+		CurrentEpochParticipation:   currentEpochParticipation,
+		JustificationBits:           state.JustificationBits(),
+		PreviousJustifiedCheckpoint: state.PreviousJustifiedCheckpoint(),
+		CurrentJustifiedCheckpoint:  state.CurrentJustifiedCheckpoint(),
+		FinalizedCheckpoint:         state.FinalizedCheckpoint(),
+		InactivityScores:            inactivityScores,
+		CurrentSyncCommittee:        currentSyncCommittee,
+		NextSyncCommittee:           nextSyncCommittee,
+		LatestExecutionPayloadHeader: &enginev1.ExecutionPayloadHeaderDeneb{
+			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(),
+			ExcessDataGas:    0,
+			DataGasUsed:      0,
+			TransactionsRoot: txRoot,
+			WithdrawalsRoot:  wdRoot,
+		},
+		NextWithdrawalIndex:          wi,
+		NextWithdrawalValidatorIndex: vi,
+		HistoricalSummaries:          summaries,
+	}
+
+	return state_native.InitializeFromProtoUnsafeDeneb(s)
+}

beacon-chain/core/deneb/upgrade_test.go

@@ -0,0 +1,94 @@
+package deneb_test
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/deneb"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/time"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	"github.com/prysmaticlabs/prysm/v4/testing/util"
+)
+
+func TestUpgradeToDeneb(t *testing.T) {
+	st, _ := util.DeterministicGenesisStateCapella(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	preForkState := st.Copy()
+	mSt, err := deneb.UpgradeToDeneb(st)
+	require.NoError(t, err)
+
+	require.Equal(t, preForkState.GenesisTime(), mSt.GenesisTime())
+	require.DeepSSZEqual(t, preForkState.GenesisValidatorsRoot(), mSt.GenesisValidatorsRoot())
+	require.Equal(t, preForkState.Slot(), mSt.Slot())
+	require.DeepSSZEqual(t, preForkState.LatestBlockHeader(), mSt.LatestBlockHeader())
+	require.DeepSSZEqual(t, preForkState.BlockRoots(), mSt.BlockRoots())
+	require.DeepSSZEqual(t, preForkState.StateRoots(), mSt.StateRoots())
+	require.DeepSSZEqual(t, preForkState.Eth1Data(), mSt.Eth1Data())
+	require.DeepSSZEqual(t, preForkState.Eth1DataVotes(), mSt.Eth1DataVotes())
+	require.DeepSSZEqual(t, preForkState.Eth1DepositIndex(), mSt.Eth1DepositIndex())
+	require.DeepSSZEqual(t, preForkState.Validators(), mSt.Validators())
+	require.DeepSSZEqual(t, preForkState.Balances(), mSt.Balances())
+	require.DeepSSZEqual(t, preForkState.RandaoMixes(), mSt.RandaoMixes())
+	require.DeepSSZEqual(t, preForkState.Slashings(), mSt.Slashings())
+	require.DeepSSZEqual(t, preForkState.JustificationBits(), mSt.JustificationBits())
+	require.DeepSSZEqual(t, preForkState.PreviousJustifiedCheckpoint(), mSt.PreviousJustifiedCheckpoint())
+	require.DeepSSZEqual(t, preForkState.CurrentJustifiedCheckpoint(), mSt.CurrentJustifiedCheckpoint())
+	require.DeepSSZEqual(t, preForkState.FinalizedCheckpoint(), mSt.FinalizedCheckpoint())
+	numValidators := mSt.NumValidators()
+	p, err := mSt.PreviousEpochParticipation()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, make([]byte, numValidators), p)
+	p, err = mSt.CurrentEpochParticipation()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, make([]byte, numValidators), p)
+	s, err := mSt.InactivityScores()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, make([]uint64, numValidators), s)
+
+	f := mSt.Fork()
+	require.DeepSSZEqual(t, &ethpb.Fork{
+		PreviousVersion: st.Fork().CurrentVersion,
+		CurrentVersion:  params.BeaconConfig().DenebForkVersion,
+		Epoch:           time.CurrentEpoch(st),
+	}, f)
+	csc, err := mSt.CurrentSyncCommittee()
+	require.NoError(t, err)
+	psc, err := preForkState.CurrentSyncCommittee()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, psc, csc)
+	nsc, err := mSt.NextSyncCommittee()
+	require.NoError(t, err)
+	psc, err = preForkState.NextSyncCommittee()
+	require.NoError(t, err)
+	require.DeepSSZEqual(t, psc, nsc)
+
+	header, err := mSt.LatestExecutionPayloadHeader()
+	require.NoError(t, err)
+	protoHeader, ok := header.Proto().(*enginev1.ExecutionPayloadHeaderDeneb)
+	require.Equal(t, true, ok)
+	prevHeader, err := preForkState.LatestExecutionPayloadHeader()
+	require.NoError(t, err)
+	txRoot, err := prevHeader.TransactionsRoot()
+	require.NoError(t, err)
+
+	wdRoot, err := prevHeader.WithdrawalsRoot()
+	require.NoError(t, err)
+	wanted := &enginev1.ExecutionPayloadHeaderDeneb{
+		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(),
+		BaseFeePerGas:    prevHeader.BaseFeePerGas(),
+		BlockHash:        prevHeader.BlockHash(),
+		TransactionsRoot: txRoot,
+		WithdrawalsRoot:  wdRoot,
+	}
+	require.DeepEqual(t, wanted, protoHeader)
+}

beacon-chain/core/time/slot_epoch.go

@@ -81,6 +81,15 @@ func CanUpgradeToCapella(slot primitives.Slot) bool {
 	return epochStart && capellaEpoch
 }
 
+// CanUpgradeToDeneb returns true if the input `slot` can upgrade to Deneb.
+// Spec code:
+// If state.slot % SLOTS_PER_EPOCH == 0 and compute_epoch_at_slot(state.slot) == DENEB_FORK_EPOCH
+func CanUpgradeToDeneb(slot primitives.Slot) bool {
+	epochStart := slots.IsEpochStart(slot)
+	DenebEpoch := slots.ToEpoch(slot) == params.BeaconConfig().DenebForkEpoch
+	return epochStart && DenebEpoch
+}
+
 // CanProcessEpoch checks the eligibility to process epoch.
 // The epoch can be processed at the end of the last slot of every epoch.
 //

beacon-chain/core/time/slot_epoch_test.go

@@ -298,3 +298,38 @@ func TestCanUpgradeToCapella(t *testing.T) {
 		})
 	}
 }
+
+func TestCanUpgradeToDeneb(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	bc := params.BeaconConfig()
+	bc.DenebForkEpoch = 5
+	params.OverrideBeaconConfig(bc)
+	tests := []struct {
+		name string
+		slot primitives.Slot
+		want bool
+	}{
+		{
+			name: "not epoch start",
+			slot: 1,
+			want: false,
+		},
+		{
+			name: "not deneb epoch",
+			slot: params.BeaconConfig().SlotsPerEpoch,
+			want: false,
+		},
+		{
+			name: "deneb epoch",
+			slot: primitives.Slot(params.BeaconConfig().DenebForkEpoch) * params.BeaconConfig().SlotsPerEpoch,
+			want: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := time.CanUpgradeToDeneb(tt.slot); got != tt.want {
+				t.Errorf("CanUpgradeToDeneb() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

beacon-chain/core/transition/BUILD.bazel

@@ -18,6 +18,7 @@ go_library(
         "//beacon-chain/core/altair:go_default_library",
         "//beacon-chain/core/blocks:go_default_library",
         "//beacon-chain/core/capella:go_default_library",
+        "//beacon-chain/core/deneb:go_default_library",
         "//beacon-chain/core/epoch:go_default_library",
         "//beacon-chain/core/epoch/precompute:go_default_library",
         "//beacon-chain/core/execution:go_default_library",

beacon-chain/core/transition/transition.go

@@ -12,6 +12,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/altair"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/capella"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/deneb"
 	e "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/epoch"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/epoch/precompute"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/execution"
@@ -269,28 +270,10 @@ func ProcessSlots(ctx context.Context, state state.BeaconState, slot primitives.
 			return nil, errors.Wrap(err, "failed to increment state slot")
 		}
 
-		if time.CanUpgradeToAltair(state.Slot()) {
-			state, err = altair.UpgradeToAltair(ctx, state)
-			if err != nil {
-				tracing.AnnotateError(span, err)
-				return nil, err
-			}
-		}
-
-		if time.CanUpgradeToBellatrix(state.Slot()) {
-			state, err = execution.UpgradeToBellatrix(state)
-			if err != nil {
-				tracing.AnnotateError(span, err)
-				return nil, err
-			}
-		}
-
-		if time.CanUpgradeToCapella(state.Slot()) {
-			state, err = capella.UpgradeToCapella(state)
-			if err != nil {
-				tracing.AnnotateError(span, err)
-				return nil, err
-			}
+		state, err = UpgradeState(ctx, state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, errors.Wrap(err, "failed to upgrade state")
 		}
 	}
 
@@ -301,6 +284,45 @@ func ProcessSlots(ctx context.Context, state state.BeaconState, slot primitives.
 	return state, nil
 }
 
+// UpgradeState upgrades the state to the next version if possible.
+func UpgradeState(ctx context.Context, state state.BeaconState) (state.BeaconState, error) {
+	ctx, span := trace.StartSpan(ctx, "core.state.UpgradeState")
+	defer span.End()
+	var err error
+	if time.CanUpgradeToAltair(state.Slot()) {
+		state, err = altair.UpgradeToAltair(ctx, state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, err
+		}
+	}
+
+	if time.CanUpgradeToBellatrix(state.Slot()) {
+		state, err = execution.UpgradeToBellatrix(state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, err
+		}
+	}
+
+	if time.CanUpgradeToCapella(state.Slot()) {
+		state, err = capella.UpgradeToCapella(state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, err
+		}
+	}
+
+	if time.CanUpgradeToDeneb(state.Slot()) {
+		state, err = deneb.UpgradeToDeneb(state)
+		if err != nil {
+			tracing.AnnotateError(span, err)
+			return nil, err
+		}
+	}
+	return state, nil
+}
+
 // VerifyOperationLengths verifies that block operation lengths are valid.
 func VerifyOperationLengths(_ context.Context, state state.BeaconState, b interfaces.ReadOnlySignedBeaconBlock) (state.BeaconState, error) {
 	if err := blocks.BeaconBlockIsNil(b); err != nil {

beacon-chain/core/transition/transition_no_verify_sig.go

@@ -256,7 +256,7 @@ func ProcessOperationsNoVerifyAttsSigs(
 		if err != nil {
 			return nil, err
 		}
-	case version.Altair, version.Bellatrix, version.Capella:
+	case version.Altair, version.Bellatrix, version.Capella, version.Deneb:
 		state, err = altairOperations(ctx, state, signedBeaconBlock)
 		if err != nil {
 			return nil, err

beacon-chain/core/transition/transition_test.go

@@ -629,6 +629,20 @@ func TestProcessSlots_ThroughBellatrixEpoch(t *testing.T) {
 	require.Equal(t, params.BeaconConfig().SlotsPerEpoch*10, st.Slot())
 }
 
+func TestProcessSlots_ThroughDenebEpoch(t *testing.T) {
+	transition.SkipSlotCache.Disable()
+	params.SetupTestConfigCleanup(t)
+	conf := params.BeaconConfig()
+	conf.DenebForkEpoch = 5
+	params.OverrideBeaconConfig(conf)
+
+	st, _ := util.DeterministicGenesisStateCapella(t, params.BeaconConfig().MaxValidatorsPerCommittee)
+	st, err := transition.ProcessSlots(context.Background(), st, params.BeaconConfig().SlotsPerEpoch*10)
+	require.NoError(t, err)
+	require.Equal(t, version.Deneb, st.Version())
+	require.Equal(t, params.BeaconConfig().SlotsPerEpoch*10, st.Slot())
+}
+
 func TestProcessSlotsUsingNextSlotCache(t *testing.T) {
 	s, _ := util.DeterministicGenesisState(t, 1)
 	r := []byte{'a'}

beacon-chain/db/iface/interface.go

@@ -54,6 +54,11 @@ type ReadOnlyDatabase interface {
 	// Fee recipients operations.
 	FeeRecipientByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (common.Address, error)
 	RegistrationByValidatorID(ctx context.Context, id primitives.ValidatorIndex) (*ethpb.ValidatorRegistrationV1, error)
+
+	// Blob operations.
+	BlobSidecarsByRoot(ctx context.Context, beaconBlockRoot [32]byte, indices ...uint64) ([]*ethpb.BlobSidecar, error)
+	BlobSidecarsBySlot(ctx context.Context, slot primitives.Slot, indices ...uint64) ([]*ethpb.BlobSidecar, error)
+
 	// origin checkpoint sync support
 	OriginCheckpointBlockRoot(ctx context.Context) ([32]byte, error)
 	BackfillBlockRoot(ctx context.Context) ([32]byte, error)
@@ -89,6 +94,10 @@ type NoHeadAccessDatabase interface {
 	SaveFeeRecipientsByValidatorIDs(ctx context.Context, ids []primitives.ValidatorIndex, addrs []common.Address) error
 	SaveRegistrationsByValidatorIDs(ctx context.Context, ids []primitives.ValidatorIndex, regs []*ethpb.ValidatorRegistrationV1) error
 
+	// Blob operations.
+	SaveBlobSidecar(ctx context.Context, sidecars []*ethpb.BlobSidecar) error
+	DeleteBlobSidecar(ctx context.Context, beaconBlockRoot [32]byte) error
+
 	CleanUpDirtyStates(ctx context.Context, slotsPerArchivedPoint primitives.Slot) error
 }
 

beacon-chain/db/kv/BUILD.bazel

@@ -5,6 +5,7 @@ go_library(
     srcs = [
         "archived_point.go",
         "backup.go",
+        "blob.go",
         "blocks.go",
         "checkpoint.go",
         "deposit_contract.go",
@@ -38,6 +39,7 @@ go_library(
         "//beacon-chain/state/genesis:go_default_library",
         "//beacon-chain/state/state-native:go_default_library",
         "//config/features:go_default_library",
+        "//config/fieldparams:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/blocks:go_default_library",
         "//consensus-types/interfaces:go_default_library",
@@ -74,6 +76,7 @@ go_test(
     srcs = [
         "archived_point_test.go",
         "backup_test.go",
+        "blob_test.go",
         "blocks_test.go",
         "checkpoint_test.go",
         "deposit_contract_test.go",
@@ -110,6 +113,7 @@ go_test(
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/testing:go_default_library",
         "//testing/assert:go_default_library",
+        "//testing/assertions:go_default_library",
         "//testing/require:go_default_library",
         "//testing/util:go_default_library",
         "@com_github_ethereum_go_ethereum//common:go_default_library",

beacon-chain/db/kv/blob.go

@@ -0,0 +1,253 @@
+package kv
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"sort"
+
+	"github.com/pkg/errors"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	types "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	bolt "go.etcd.io/bbolt"
+	"go.opencensus.io/trace"
+)
+
+// SaveBlobSidecar saves the blobs for a given epoch in the sidecar bucket. When we receive a blob:
+//
+//  1. Convert slot using a modulo operator to [0, maxSlots] where maxSlots = MAX_BLOB_EPOCHS*SLOTS_PER_EPOCH
+//
+//  2. Compute key for blob as bytes(slot_to_rotating_buffer(blob.slot)) ++ bytes(blob.slot) ++ blob.block_root
+//
+//  3. Begin the save algorithm:  If the incoming blob has a slot bigger than the saved slot at the spot
+//     in the rotating keys buffer, we overwrite all elements for that slot.
+func (s *Store) SaveBlobSidecar(ctx context.Context, scs []*ethpb.BlobSidecar) error {
+	ctx, span := trace.StartSpan(ctx, "BeaconDB.SaveBlobSidecar")
+	defer span.End()
+
+	sortSideCars(scs)
+	if err := s.verifySideCars(scs); err != nil {
+		return err
+	}
+
+	slot := scs[0].Slot
+	return s.db.Update(func(tx *bolt.Tx) error {
+		encodedBlobSidecar, err := encode(ctx, &ethpb.BlobSidecars{Sidecars: scs})
+		if err != nil {
+			return err
+		}
+		bkt := tx.Bucket(blobsBucket)
+		c := bkt.Cursor()
+		newKey := blobSidecarKey(scs[0])
+		rotatingBufferPrefix := newKey[0:8]
+		var replacingKey []byte
+		for k, _ := c.Seek(rotatingBufferPrefix); bytes.HasPrefix(k, rotatingBufferPrefix); k, _ = c.Next() {
+			if len(k) != 0 {
+				replacingKey = k
+				oldSlotBytes := replacingKey[8:16]
+				oldSlot := bytesutil.BytesToSlotBigEndian(oldSlotBytes)
+				if oldSlot >= slot {
+					return fmt.Errorf("attempted to save blob with slot %d but already have older blob with slot %d", slot, oldSlot)
+				}
+				break
+			}
+		}
+		// If there is no element stored at blob.slot % MAX_SLOTS_TO_PERSIST_BLOBS, then we simply
+		// store the blob by key and exit early.
+		if len(replacingKey) != 0 {
+			if err := bkt.Delete(replacingKey); err != nil {
+				log.WithError(err).Warnf("Could not delete blob with key %#x", replacingKey)
+			}
+		}
+		return bkt.Put(newKey, encodedBlobSidecar)
+	})
+}
+
+// verifySideCars ensures that all sidecars have the same slot, parent root, block root, and proposer index.
+// It also ensures that indices are sequential and start at 0 and no more than MAX_BLOB_EPOCHS.
+func (s *Store) verifySideCars(scs []*ethpb.BlobSidecar) error {
+	if len(scs) == 0 {
+		return errors.New("nil or empty blob sidecars")
+	}
+	if uint64(len(scs)) > fieldparams.MaxBlobsPerBlock {
+		return fmt.Errorf("too many sidecars: %d > %d", len(scs), fieldparams.MaxBlobsPerBlock)
+	}
+
+	sl := scs[0].Slot
+	pr := scs[0].BlockParentRoot
+	r := scs[0].BlockRoot
+	p := scs[0].ProposerIndex
+
+	for i, sc := range scs {
+		if sc.Slot != sl {
+			return fmt.Errorf("sidecar slot mismatch: %d != %d", sc.Slot, sl)
+		}
+		if !bytes.Equal(sc.BlockParentRoot, pr) {
+			return fmt.Errorf("sidecar parent root mismatch: %x != %x", sc.BlockParentRoot, pr)
+		}
+		if !bytes.Equal(sc.BlockRoot, r) {
+			return fmt.Errorf("sidecar root mismatch: %x != %x", sc.BlockRoot, r)
+		}
+		if sc.ProposerIndex != p {
+			return fmt.Errorf("sidecar proposer index mismatch: %d != %d", sc.ProposerIndex, p)
+		}
+		if sc.Index != uint64(i) {
+			return fmt.Errorf("sidecar index mismatch: %d != %d", sc.Index, i)
+		}
+	}
+	return nil
+}
+
+// sortSideCars sorts the sidecars by their index.
+func sortSideCars(scs []*ethpb.BlobSidecar) {
+	sort.Slice(scs, func(i, j int) bool {
+		return scs[i].Index < scs[j].Index
+	})
+}
+
+// BlobSidecarsByRoot retrieves the blobs for the given beacon block root.
+// If the `indices` argument is omitted, all blobs for the root will be returned.
+// Otherwise, the result will be filtered to only include the specified indices.
+// An error will result if an invalid index is specified.
+// The bucket size is bounded by 131072 entries. That's the most blobs a node will keep before rotating it out.
+func (s *Store) BlobSidecarsByRoot(ctx context.Context, root [32]byte, indices ...uint64) ([]*ethpb.BlobSidecar, error) {
+	ctx, span := trace.StartSpan(ctx, "BeaconDB.BlobSidecarsByRoot")
+	defer span.End()
+
+	var enc []byte
+	if err := s.db.View(func(tx *bolt.Tx) error {
+		c := tx.Bucket(blobsBucket).Cursor()
+		// Bucket size is bounded and bolt cursors are fast. Moreover, a thin caching layer can be added.
+		for k, v := c.First(); k != nil; k, v = c.Next() {
+			if bytes.HasSuffix(k, root[:]) {
+				enc = v
+				break
+			}
+		}
+		return nil
+	}); err != nil {
+		return nil, err
+	}
+	if enc == nil {
+		return nil, ErrNotFound
+	}
+	sc := &ethpb.BlobSidecars{}
+	if err := decode(ctx, enc, sc); err != nil {
+		return nil, err
+	}
+
+	return filterForIndices(sc, indices...)
+}
+
+func filterForIndices(sc *ethpb.BlobSidecars, indices ...uint64) ([]*ethpb.BlobSidecar, error) {
+	if len(indices) == 0 {
+		return sc.Sidecars, nil
+	}
+	// This loop assumes that the BlobSidecars value stores the complete set of blobs for a block
+	// in ascending order from eg 0..3, without gaps. This allows us to assume the indices argument
+	// maps 1:1 with indices in the BlobSidecars storage object.
+	maxIdx := uint64(len(sc.Sidecars)) - 1
+	sidecars := make([]*ethpb.BlobSidecar, len(indices))
+	for i, idx := range indices {
+		if idx > maxIdx {
+			return nil, errors.Wrapf(ErrNotFound, "BlobSidecars missing index: index %d", idx)
+		}
+		sidecars[i] = sc.Sidecars[idx]
+	}
+	return sidecars, nil
+}
+
+// BlobSidecarsBySlot retrieves BlobSidecars for the given slot.
+// If the `indices` argument is omitted, all blobs for the root will be returned.
+// Otherwise, the result will be filtered to only include the specified indices.
+// An error will result if an invalid index is specified.
+// The bucket size is bounded by 131072 entries. That's the most blobs a node will keep before rotating it out.
+func (s *Store) BlobSidecarsBySlot(ctx context.Context, slot types.Slot, indices ...uint64) ([]*ethpb.BlobSidecar, error) {
+	ctx, span := trace.StartSpan(ctx, "BeaconDB.BlobSidecarsBySlot")
+	defer span.End()
+
+	var enc []byte
+	sk := slotKey(slot)
+	if err := s.db.View(func(tx *bolt.Tx) error {
+		c := tx.Bucket(blobsBucket).Cursor()
+		// Bucket size is bounded and bolt cursors are fast. Moreover, a thin caching layer can be added.
+		for k, v := c.Seek(sk); bytes.HasPrefix(k, sk); k, _ = c.Next() {
+			slotInKey := bytesutil.BytesToSlotBigEndian(k[8:16])
+			if slotInKey == slot {
+				enc = v
+				break
+			}
+		}
+		return nil
+	}); err != nil {
+		return nil, err
+	}
+	if enc == nil {
+		return nil, ErrNotFound
+	}
+	sc := &ethpb.BlobSidecars{}
+	if err := decode(ctx, enc, sc); err != nil {
+		return nil, err
+	}
+
+	return filterForIndices(sc, indices...)
+}
+
+// DeleteBlobSidecar returns true if the blobs are in the db.
+func (s *Store) DeleteBlobSidecar(ctx context.Context, beaconBlockRoot [32]byte) error {
+	_, span := trace.StartSpan(ctx, "BeaconDB.DeleteBlobSidecar")
+	defer span.End()
+	return s.db.Update(func(tx *bolt.Tx) error {
+		bkt := tx.Bucket(blobsBucket)
+		c := bkt.Cursor()
+		for k, _ := c.First(); k != nil; k, _ = c.Next() {
+			if bytes.HasSuffix(k, beaconBlockRoot[:]) {
+				if err := bkt.Delete(k); err != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	})
+}
+
+// We define a blob sidecar key as: bytes(slot_to_rotating_buffer(blob.slot)) ++ bytes(blob.slot) ++ blob.block_root
+// where slot_to_rotating_buffer(slot) = slot % MAX_SLOTS_TO_PERSIST_BLOBS.
+func blobSidecarKey(blob *ethpb.BlobSidecar) []byte {
+	key := slotKey(blob.Slot)
+	key = append(key, bytesutil.SlotToBytesBigEndian(blob.Slot)...)
+	key = append(key, blob.BlockRoot...)
+	return key
+}
+
+func slotKey(slot types.Slot) []byte {
+	slotsPerEpoch := params.BeaconConfig().SlotsPerEpoch
+	maxEpochsToPersistBlobs := params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest
+	maxSlotsToPersistBlobs := types.Slot(maxEpochsToPersistBlobs.Mul(uint64(slotsPerEpoch)))
+	return bytesutil.SlotToBytesBigEndian(slot.ModSlot(maxSlotsToPersistBlobs))
+}
+
+func checkEpochsForBlobSidecarsRequestBucket(db *bolt.DB) error {
+	if err := db.Update(func(tx *bolt.Tx) error {
+		b := tx.Bucket(epochsForBlobSidecarsRequestBucket)
+		k := []byte("epoch-key")
+		v := b.Get(k)
+		if v == nil {
+			if err := b.Put(k, bytesutil.Uint64ToBytesBigEndian(uint64(params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest))); err != nil {
+				return err
+			}
+			return nil
+		}
+		e := bytesutil.BytesToUint64BigEndian(v)
+		if e != uint64(params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest) {
+			return fmt.Errorf("epochs for blobs request value in DB %d does not match config value %d", e, params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest)
+		}
+		return nil
+	}); err != nil {
+		return err
+	}
+	return nil
+}

beacon-chain/db/kv/blob_test.go

@@ -0,0 +1,317 @@
+package kv
+
+import (
+	"context"
+	"crypto/rand"
+	"fmt"
+	"testing"
+
+	"github.com/pkg/errors"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/testing/assertions"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	bolt "go.etcd.io/bbolt"
+)
+
+func equalBlobSlices(expect []*ethpb.BlobSidecar, got []*ethpb.BlobSidecar) error {
+	if len(expect) != len(got) {
+		return fmt.Errorf("mismatched lengths, expect=%d, got=%d", len(expect), len(got))
+	}
+	for i := 0; i < len(expect); i++ {
+		es := expect[i]
+		gs := got[i]
+		var e string
+		assertions.DeepEqual(assertions.SprintfAssertionLoggerFn(&e), es, gs)
+		if e != "" {
+			return errors.New(e)
+		}
+	}
+	return nil
+}
+
+func TestStore_BlobSidecars(t *testing.T) {
+	ctx := context.Background()
+
+	t.Run("empty", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, 0)
+		require.ErrorContains(t, "nil or empty blob sidecars", db.SaveBlobSidecar(ctx, scs))
+	})
+	t.Run("empty by root", func(t *testing.T) {
+		db := setupDB(t)
+		got, err := db.BlobSidecarsByRoot(ctx, [32]byte{})
+		require.ErrorIs(t, ErrNotFound, err)
+		require.Equal(t, 0, len(got))
+	})
+	t.Run("empty by slot", func(t *testing.T) {
+		db := setupDB(t)
+		got, err := db.BlobSidecarsBySlot(ctx, 1)
+		require.ErrorIs(t, ErrNotFound, err)
+		require.Equal(t, 0, len(got))
+	})
+	t.Run("save and retrieve by root (one)", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, 1)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, 1, len(scs))
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+	})
+	t.Run("save and retrieve by root (max)", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+	})
+	t.Run("save and retrieve valid subset by root", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+
+		// we'll request indices 0 and 3, so make a slice with those indices for comparison
+		expect := make([]*ethpb.BlobSidecar, 2)
+		expect[0] = scs[0]
+		expect[1] = scs[3]
+
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot), 0, 3)
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(expect, got))
+		require.Equal(t, uint64(0), got[0].Index)
+		require.Equal(t, uint64(3), got[1].Index)
+	})
+	t.Run("error for invalid index when retrieving by root", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot), uint64(len(scs)))
+		require.ErrorIs(t, err, ErrNotFound)
+		require.Equal(t, 0, len(got))
+	})
+	t.Run("save and retrieve by slot (one)", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, 1)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, 1, len(scs))
+		got, err := db.BlobSidecarsBySlot(ctx, scs[0].Slot)
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+	})
+	t.Run("save and retrieve by slot (max)", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+		got, err := db.BlobSidecarsBySlot(ctx, scs[0].Slot)
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+	})
+	t.Run("save and retrieve valid subset by slot", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+
+		// we'll request indices 0 and 3, so make a slice with those indices for comparison
+		expect := make([]*ethpb.BlobSidecar, 2)
+		expect[0] = scs[0]
+		expect[1] = scs[3]
+
+		got, err := db.BlobSidecarsBySlot(ctx, scs[0].Slot, 0, 3)
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(expect, got))
+
+		require.Equal(t, uint64(0), got[0].Index)
+		require.Equal(t, uint64(3), got[1].Index)
+	})
+	t.Run("error for invalid index when retrieving by slot", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+
+		got, err := db.BlobSidecarsBySlot(ctx, scs[0].Slot, uint64(len(scs)))
+		require.ErrorIs(t, err, ErrNotFound)
+		require.Equal(t, 0, len(got))
+	})
+	t.Run("delete works", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+		require.NoError(t, db.DeleteBlobSidecar(ctx, bytesutil.ToBytes32(scs[0].BlockRoot)))
+		got, err = db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot))
+		require.ErrorIs(t, ErrNotFound, err)
+		require.Equal(t, 0, len(got))
+	})
+	t.Run("saving a blob with older slot", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(scs[0].BlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+		require.ErrorContains(t, "but already have older blob with slot", db.SaveBlobSidecar(ctx, scs))
+	})
+	t.Run("saving a new blob for rotation", func(t *testing.T) {
+		db := setupDB(t)
+		scs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		require.NoError(t, db.SaveBlobSidecar(ctx, scs))
+		require.Equal(t, int(fieldparams.MaxBlobsPerBlock), len(scs))
+		oldBlockRoot := scs[0].BlockRoot
+		got, err := db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(oldBlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(scs, got))
+
+		newScs := generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock)
+		newRetentionSlot := primitives.Slot(params.BeaconNetworkConfig().MinEpochsForBlobsSidecarsRequest.Mul(uint64(params.BeaconConfig().SlotsPerEpoch)))
+		for _, sc := range newScs {
+			sc.Slot = sc.Slot + newRetentionSlot
+		}
+		require.NoError(t, db.SaveBlobSidecar(ctx, newScs))
+
+		_, err = db.BlobSidecarsBySlot(ctx, 100)
+		require.ErrorIs(t, ErrNotFound, err)
+
+		got, err = db.BlobSidecarsByRoot(ctx, bytesutil.ToBytes32(newScs[0].BlockRoot))
+		require.NoError(t, err)
+		require.NoError(t, equalBlobSlices(newScs, got))
+	})
+}
+
+func generateBlobSidecars(t *testing.T, n uint64) []*ethpb.BlobSidecar {
+	blobSidecars := make([]*ethpb.BlobSidecar, n)
+	for i := uint64(0); i < n; i++ {
+		blobSidecars[i] = generateBlobSidecar(t, i)
+	}
+	return blobSidecars
+}
+
+func generateBlobSidecar(t *testing.T, index uint64) *ethpb.BlobSidecar {
+	blob := make([]byte, 131072)
+	_, err := rand.Read(blob)
+	require.NoError(t, err)
+	kzgCommitment := make([]byte, 48)
+	_, err = rand.Read(kzgCommitment)
+	require.NoError(t, err)
+	kzgProof := make([]byte, 48)
+	_, err = rand.Read(kzgProof)
+	require.NoError(t, err)
+
+	return &ethpb.BlobSidecar{
+		BlockRoot:       bytesutil.PadTo([]byte{'a'}, 32),
+		Index:           index,
+		Slot:            100,
+		BlockParentRoot: bytesutil.PadTo([]byte{'b'}, 32),
+		ProposerIndex:   101,
+		Blob:            blob,
+		KzgCommitment:   kzgCommitment,
+		KzgProof:        kzgProof,
+	}
+}
+
+func TestStore_verifySideCars(t *testing.T) {
+	s := setupDB(t)
+	tests := []struct {
+		name  string
+		scs   []*ethpb.BlobSidecar
+		error string
+	}{
+		{name: "empty", scs: []*ethpb.BlobSidecar{}, error: "nil or empty blob sidecars"},
+		{name: "too many sidecars", scs: generateBlobSidecars(t, fieldparams.MaxBlobsPerBlock+1), error: "too many sidecars: 7 > 6"},
+		{name: "invalid slot", scs: []*ethpb.BlobSidecar{{Slot: 1}, {Slot: 2}}, error: "sidecar slot mismatch: 2 != 1"},
+		{name: "invalid proposer index", scs: []*ethpb.BlobSidecar{{ProposerIndex: 1}, {ProposerIndex: 2}}, error: "sidecar proposer index mismatch: 2 != 1"},
+		{name: "invalid root", scs: []*ethpb.BlobSidecar{{BlockRoot: []byte{1}}, {BlockRoot: []byte{2}}}, error: "sidecar root mismatch: 02 != 01"},
+		{name: "invalid parent root", scs: []*ethpb.BlobSidecar{{BlockParentRoot: []byte{1}}, {BlockParentRoot: []byte{2}}}, error: "sidecar parent root mismatch: 02 != 01"},
+		{name: "invalid side index", scs: []*ethpb.BlobSidecar{{Index: 0}, {Index: 0}}, error: "sidecar index mismatch: 0 != 1"},
+		{name: "happy path", scs: []*ethpb.BlobSidecar{{Index: 0}, {Index: 1}}, error: ""},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := s.verifySideCars(tt.scs)
+			if tt.error != "" {
+				require.Equal(t, tt.error, err.Error())
+			} else {
+				require.NoError(t, err)
+			}
+		})
+	}
+}
+
+func TestStore_sortSidecars(t *testing.T) {
+	scs := []*ethpb.BlobSidecar{
+		{Index: 6},
+		{Index: 4},
+		{Index: 2},
+		{Index: 1},
+		{Index: 3},
+		{Index: 5},
+		{},
+	}
+	sortSideCars(scs)
+	for i := 0; i < len(scs)-1; i++ {
+		require.Equal(t, uint64(i), scs[i].Index)
+	}
+}
+
+func BenchmarkStore_BlobSidecarsByRoot(b *testing.B) {
+	s := setupDB(b)
+	ctx := context.Background()
+	require.NoError(b, s.SaveBlobSidecar(ctx, []*ethpb.BlobSidecar{
+		{BlockRoot: bytesutil.PadTo([]byte{'a'}, 32), Slot: 0},
+	}))
+
+	err := s.db.Update(func(tx *bolt.Tx) error {
+		bkt := tx.Bucket(blobsBucket)
+		for i := 1; i < 131071; i++ {
+			r := make([]byte, 32)
+			_, err := rand.Read(r)
+			require.NoError(b, err)
+			scs := []*ethpb.BlobSidecar{
+				{BlockRoot: r, Slot: primitives.Slot(i)},
+			}
+			k := blobSidecarKey(scs[0])
+			encodedBlobSidecar, err := encode(ctx, &ethpb.BlobSidecars{Sidecars: scs})
+			require.NoError(b, err)
+			require.NoError(b, bkt.Put(k, encodedBlobSidecar))
+		}
+		return nil
+	})
+	require.NoError(b, err)
+
+	require.NoError(b, s.SaveBlobSidecar(ctx, []*ethpb.BlobSidecar{
+		{BlockRoot: bytesutil.PadTo([]byte{'b'}, 32), Slot: 131071},
+	}))
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		_, err := s.BlobSidecarsByRoot(ctx, [32]byte{'b'})
+		require.NoError(b, err)
+	}
+}
+
+func Test_checkEpochsForBlobSidecarsRequestBucket(t *testing.T) {
+	dbStore := setupDB(t)
+
+	require.NoError(t, checkEpochsForBlobSidecarsRequestBucket(dbStore.db)) // First write
+	require.NoError(t, checkEpochsForBlobSidecarsRequestBucket(dbStore.db)) // First check
+
+	nConfig := params.BeaconNetworkConfig()
+	nConfig.MinEpochsForBlobsSidecarsRequest = 42069
+	params.OverrideBeaconNetworkConfig(nConfig)
+	require.ErrorContains(t, "epochs for blobs request value in DB 4096 does not match config value 42069", checkEpochsForBlobSidecarsRequestBucket(dbStore.db))
+}

beacon-chain/db/kv/blocks.go

@@ -818,6 +818,16 @@ func unmarshalBlock(_ context.Context, enc []byte) (interfaces.ReadOnlySignedBea
 		if err := rawBlock.UnmarshalSSZ(enc[len(capellaBlindKey):]); err != nil {
 			return nil, errors.Wrap(err, "could not unmarshal blinded Capella block")
 		}
+	case hasDenebKey(enc):
+		rawBlock = &ethpb.SignedBeaconBlockDeneb{}
+		if err := rawBlock.UnmarshalSSZ(enc[len(denebKey):]); err != nil {
+			return nil, errors.Wrap(err, "could not unmarshal Deneb block")
+		}
+	case hasDenebBlindKey(enc):
+		rawBlock = &ethpb.SignedBlindedBeaconBlockDeneb{}
+		if err := rawBlock.UnmarshalSSZ(enc[len(denebBlindKey):]); err != nil {
+			return nil, errors.Wrap(err, "could not unmarshal blinded Deneb block")
+		}
 	default:
 		// Marshal block bytes to phase 0 beacon block.
 		rawBlock = &ethpb.SignedBeaconBlock{}
@@ -854,6 +864,8 @@ func marshalBlockFull(
 		return nil, err
 	}
 	switch blk.Version() {
+	case version.Deneb:
+		return snappy.Encode(nil, append(denebKey, encodedBlock...)), nil
 	case version.Capella:
 		return snappy.Encode(nil, append(capellaKey, encodedBlock...)), nil
 	case version.Bellatrix:
@@ -888,6 +900,8 @@ func marshalBlockBlinded(
 		return nil, errors.Wrap(err, "could not marshal blinded block")
 	}
 	switch blk.Version() {
+	case version.Deneb:
+		return snappy.Encode(nil, append(denebBlindKey, encodedBlock...)), nil
 	case version.Capella:
 		return snappy.Encode(nil, append(capellaBlindKey, encodedBlock...)), nil
 	case version.Bellatrix:

beacon-chain/db/kv/blocks_test.go

@@ -90,6 +90,40 @@ var blockTests = []struct {
 			return blocks.NewSignedBeaconBlock(b)
 		},
 	},
+	{
+		name: "deneb",
+		newBlock: func(slot primitives.Slot, root []byte) (interfaces.ReadOnlySignedBeaconBlock, error) {
+			b := util.NewBeaconBlockDeneb()
+			b.Block.Slot = slot
+			if root != nil {
+				b.Block.ParentRoot = root
+				b.Block.Body.BlobKzgCommitments = [][]byte{
+					bytesutil.PadTo([]byte{0x01}, 48),
+					bytesutil.PadTo([]byte{0x02}, 48),
+					bytesutil.PadTo([]byte{0x03}, 48),
+					bytesutil.PadTo([]byte{0x04}, 48),
+				}
+			}
+			return blocks.NewSignedBeaconBlock(b)
+		},
+	},
+	{
+		name: "deneb blind",
+		newBlock: func(slot primitives.Slot, root []byte) (interfaces.ReadOnlySignedBeaconBlock, error) {
+			b := util.NewBlindedBeaconBlockDeneb()
+			b.Block.Slot = slot
+			if root != nil {
+				b.Block.ParentRoot = root
+				b.Block.Body.BlobKzgCommitments = [][]byte{
+					bytesutil.PadTo([]byte{0x05}, 48),
+					bytesutil.PadTo([]byte{0x06}, 48),
+					bytesutil.PadTo([]byte{0x07}, 48),
+					bytesutil.PadTo([]byte{0x08}, 48),
+				}
+			}
+			return blocks.NewSignedBeaconBlock(b)
+		},
+	},
 }
 
 func TestStore_SaveBackfillBlockRoot(t *testing.T) {
@@ -359,6 +393,10 @@ func TestStore_BlocksCRUD_NoCache(t *testing.T) {
 				wanted, err = blk.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := blk.PbDenebBlock(); err == nil {
+				wanted, err = blk.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err := wanted.Proto()
 			require.NoError(t, err)
 			retrievedPb, err := retrievedBlock.Proto()
@@ -582,6 +620,10 @@ func TestStore_SaveBlock_CanGetHighestAt(t *testing.T) {
 				wanted, err = wanted.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := block1.PbDenebBlock(); err == nil {
+				wanted, err = wanted.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err := wanted.Proto()
 			require.NoError(t, err)
 			bPb, err := b.Proto()
@@ -604,6 +646,10 @@ func TestStore_SaveBlock_CanGetHighestAt(t *testing.T) {
 				wanted2, err = block2.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := block2.PbDenebBlock(); err == nil {
+				wanted2, err = block2.ToBlinded()
+				require.NoError(t, err)
+			}
 			wanted2Pb, err := wanted2.Proto()
 			require.NoError(t, err)
 			bPb, err = b.Proto()
@@ -626,6 +672,10 @@ func TestStore_SaveBlock_CanGetHighestAt(t *testing.T) {
 				wanted, err = wanted.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := block3.PbDenebBlock(); err == nil {
+				wanted, err = wanted.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err = wanted.Proto()
 			require.NoError(t, err)
 			bPb, err = b.Proto()
@@ -666,6 +716,10 @@ func TestStore_GenesisBlock_CanGetHighestAt(t *testing.T) {
 				wanted, err = block1.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := block1.PbDenebBlock(); err == nil {
+				wanted, err = block1.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err := wanted.Proto()
 			require.NoError(t, err)
 			bPb, err := b.Proto()
@@ -687,6 +741,10 @@ func TestStore_GenesisBlock_CanGetHighestAt(t *testing.T) {
 				wanted, err = genesisBlock.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := genesisBlock.PbDenebBlock(); err == nil {
+				wanted, err = genesisBlock.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err = wanted.Proto()
 			require.NoError(t, err)
 			bPb, err = b.Proto()
@@ -708,6 +766,10 @@ func TestStore_GenesisBlock_CanGetHighestAt(t *testing.T) {
 				wanted, err = genesisBlock.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := genesisBlock.PbDenebBlock(); err == nil {
+				wanted, err = genesisBlock.ToBlinded()
+				require.NoError(t, err)
+			}
 			wantedPb, err = wanted.Proto()
 			require.NoError(t, err)
 			bPb, err = b.Proto()
@@ -808,6 +870,10 @@ func TestStore_BlocksBySlot_BlockRootsBySlot(t *testing.T) {
 				wanted, err = b1.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := b1.PbDenebBlock(); err == nil {
+				wanted, err = b1.ToBlinded()
+				require.NoError(t, err)
+			}
 			retrieved0Pb, err := retrievedBlocks[0].Proto()
 			require.NoError(t, err)
 			wantedPb, err := wanted.Proto()
@@ -828,6 +894,10 @@ func TestStore_BlocksBySlot_BlockRootsBySlot(t *testing.T) {
 				wanted, err = b2.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := b2.PbDenebBlock(); err == nil {
+				wanted, err = b2.ToBlinded()
+				require.NoError(t, err)
+			}
 			retrieved0Pb, err = retrievedBlocks[0].Proto()
 			require.NoError(t, err)
 			wantedPb, err = wanted.Proto()
@@ -842,6 +912,10 @@ func TestStore_BlocksBySlot_BlockRootsBySlot(t *testing.T) {
 				wanted, err = b3.ToBlinded()
 				require.NoError(t, err)
 			}
+			if _, err := b3.PbDenebBlock(); err == nil {
+				wanted, err = b3.ToBlinded()
+				require.NoError(t, err)
+			}
 			retrieved1Pb, err := retrievedBlocks[1].Proto()
 			require.NoError(t, err)
 			wantedPb, err = wanted.Proto()

beacon-chain/db/kv/key.go

@@ -37,3 +37,17 @@ func hasCapellaBlindKey(enc []byte) bool {
 	}
 	return bytes.Equal(enc[:len(capellaBlindKey)], capellaBlindKey)
 }
+
+func hasDenebKey(enc []byte) bool {
+	if len(denebKey) >= len(enc) {
+		return false
+	}
+	return bytes.Equal(enc[:len(denebKey)], denebKey)
+}
+
+func hasDenebBlindKey(enc []byte) bool {
+	if len(denebBlindKey) >= len(enc) {
+		return false
+	}
+	return bytes.Equal(enc[:len(denebBlindKey)], denebBlindKey)
+}

beacon-chain/db/kv/kv.go

@@ -129,6 +129,9 @@ var Buckets = [][]byte{
 
 	feeRecipientBucket,
 	registrationBucket,
+
+	blobsBucket,
+	epochsForBlobSidecarsRequestBucket,
 }
 
 // NewKVStore initializes a new boltDB key-value store at the directory
@@ -199,6 +202,11 @@ func NewKVStore(ctx context.Context, dirPath string) (*Store, error) {
 	if err := kv.setupBlockStorageType(ctx); err != nil {
 		return nil, err
 	}
+
+	if err := checkEpochsForBlobSidecarsRequestBucket(boltDB); err != nil {
+		return nil, errors.Wrap(err, "failed to check epochs for blob sidecars request bucket")
+	}
+
 	return kv, nil
 }
 

beacon-chain/db/kv/schema.go

@@ -46,6 +46,7 @@ var (
 	finalizedCheckpointKey     = []byte("finalized-checkpoint")
 	powchainDataKey            = []byte("powchain-data")
 	lastValidatedCheckpointKey = []byte("last-validated-checkpoint")
+	blobsBucket                = []byte("blobs")
 
 	// Below keys are used to identify objects are to be fork compatible.
 	// Objects that are only compatible with specific forks should be prefixed with such keys.
@@ -55,6 +56,9 @@ var (
 	capellaKey                 = []byte("capella")
 	capellaBlindKey            = []byte("blind-capella")
 	saveBlindedBeaconBlocksKey = []byte("save-blinded-beacon-blocks")
+	denebKey                   = []byte("deneb")
+	denebBlindKey              = []byte("blind-deneb")
+
 	// block root included in the beacon state used by weak subjectivity initial sync
 	originCheckpointBlockRootKey = []byte("origin-checkpoint-block-root")
 	// block root tracking the progress of backfill, or pointing at genesis if backfill has not been initiated
@@ -70,4 +74,7 @@ var (
 
 	// Migrations
 	migrationsBucket = []byte("migrations")
+
+	// Stores how long to keep the blob sidecars for.
+	epochsForBlobSidecarsRequestBucket = []byte("epochs-for-blob-sidecars-request")
 )

beacon-chain/db/kv/state.go

@@ -229,34 +229,28 @@ func (s *Store) saveStatesEfficientInternal(ctx context.Context, tx *bolt.Tx, bl
 		// look at issue https://github.com/prysmaticlabs/prysm/issues/9262.
 		switch rawType := states[i].ToProtoUnsafe().(type) {
 		case *ethpb.BeaconState:
-			pbState, err := statenative.ProtobufBeaconStatePhase0(rawType)
+			pbState, err := getPhase0PbState(rawType)
 			if err != nil {
 				return err
 			}
-			if pbState == nil {
-				return errors.New("nil state")
-			}
 			valEntries := pbState.Validators
 			pbState.Validators = make([]*ethpb.Validator, 0)
 			encodedState, err := encode(ctx, pbState)
 			if err != nil {
 				return err
 			}
+			pbState.Validators = valEntries
 			if err := bucket.Put(rt[:], encodedState); err != nil {
 				return err
 			}
-			pbState.Validators = valEntries
 			if err := valIdxBkt.Put(rt[:], validatorKeys[i]); err != nil {
 				return err
 			}
 		case *ethpb.BeaconStateAltair:
-			pbState, err := statenative.ProtobufBeaconStateAltair(rawType)
+			pbState, err := getAltairPbState(rawType)
 			if err != nil {
 				return err
 			}
-			if pbState == nil {
-				return errors.New("nil state")
-			}
 			valEntries := pbState.Validators
 			pbState.Validators = make([]*ethpb.Validator, 0)
 			rawObj, err := pbState.MarshalSSZ()
@@ -272,13 +266,10 @@ func (s *Store) saveStatesEfficientInternal(ctx context.Context, tx *bolt.Tx, bl
 				return err
 			}
 		case *ethpb.BeaconStateBellatrix:
-			pbState, err := statenative.ProtobufBeaconStateBellatrix(rawType)
+			pbState, err := getBellatrixPbState(rawType)
 			if err != nil {
 				return err
 			}
-			if pbState == nil {
-				return errors.New("nil state")
-			}
 			valEntries := pbState.Validators
 			pbState.Validators = make([]*ethpb.Validator, 0)
 			rawObj, err := pbState.MarshalSSZ()
@@ -294,12 +285,28 @@ func (s *Store) saveStatesEfficientInternal(ctx context.Context, tx *bolt.Tx, bl
 				return err
 			}
 		case *ethpb.BeaconStateCapella:
-			pbState, err := statenative.ProtobufBeaconStateCapella(rawType)
+			pbState, err := getCapellaPbState(rawType)
 			if err != nil {
 				return err
 			}
-			if pbState == nil {
-				return errors.New("nil state")
+			valEntries := pbState.Validators
+			pbState.Validators = make([]*ethpb.Validator, 0)
+			rawObj, err := pbState.MarshalSSZ()
+			if err != nil {
+				return err
+			}
+			encodedState := snappy.Encode(nil, append(capellaKey, rawObj...))
+			if err := bucket.Put(rt[:], encodedState); err != nil {
+				return err
+			}
+			pbState.Validators = valEntries
+			if err := valIdxBkt.Put(rt[:], validatorKeys[i]); err != nil {
+				return err
+			}
+		case *ethpb.BeaconStateDeneb:
+			pbState, err := getDenebPbState(rawType)
+			if err != nil {
+				return err
 			}
 			valEntries := pbState.Validators
 			pbState.Validators = make([]*ethpb.Validator, 0)
@@ -323,6 +330,61 @@ func (s *Store) saveStatesEfficientInternal(ctx context.Context, tx *bolt.Tx, bl
 	return s.storeValidatorEntriesSeparately(ctx, tx, validatorsEntries)
 }
 
+func getPhase0PbState(rawState interface{}) (*ethpb.BeaconState, error) {
+	pbState, err := statenative.ProtobufBeaconStatePhase0(rawState)
+	if err != nil {
+		return nil, err
+	}
+	if pbState == nil {
+		return nil, errors.New("nil state")
+	}
+	return pbState, nil
+}
+
+func getAltairPbState(rawState interface{}) (*ethpb.BeaconStateAltair, error) {
+	pbState, err := statenative.ProtobufBeaconStateAltair(rawState)
+	if err != nil {
+		return nil, err
+	}
+	if pbState == nil {
+		return nil, errors.New("nil state")
+	}
+	return pbState, nil
+}
+
+func getBellatrixPbState(rawState interface{}) (*ethpb.BeaconStateBellatrix, error) {
+	pbState, err := statenative.ProtobufBeaconStateBellatrix(rawState)
+	if err != nil {
+		return nil, err
+	}
+	if pbState == nil {
+		return nil, errors.New("nil state")
+	}
+	return pbState, nil
+}
+
+func getCapellaPbState(rawState interface{}) (*ethpb.BeaconStateCapella, error) {
+	pbState, err := statenative.ProtobufBeaconStateCapella(rawState)
+	if err != nil {
+		return nil, err
+	}
+	if pbState == nil {
+		return nil, errors.New("nil state")
+	}
+	return pbState, nil
+}
+
+func getDenebPbState(rawState interface{}) (*ethpb.BeaconStateDeneb, error) {
+	pbState, err := statenative.ProtobufBeaconStateDeneb(rawState)
+	if err != nil {
+		return nil, err
+	}
+	if pbState == nil {
+		return nil, errors.New("nil state")
+	}
+	return pbState, nil
+}
+
 func (s *Store) storeValidatorEntriesSeparately(ctx context.Context, tx *bolt.Tx, validatorsEntries map[string]*ethpb.Validator) error {
 	valBkt := tx.Bucket(stateValidatorsBucket)
 	for hashStr, validatorEntry := range validatorsEntries {
@@ -472,6 +534,19 @@ func (s *Store) unmarshalState(_ context.Context, enc []byte, validatorEntries [
 	}
 
 	switch {
+	case hasDenebKey(enc):
+		protoState := &ethpb.BeaconStateDeneb{}
+		if err := protoState.UnmarshalSSZ(enc[len(denebKey):]); err != nil {
+			return nil, errors.Wrap(err, "failed to unmarshal encoding for Deneb")
+		}
+		ok, err := s.isStateValidatorMigrationOver()
+		if err != nil {
+			return nil, err
+		}
+		if ok {
+			protoState.Validators = validatorEntries
+		}
+		return statenative.InitializeFromProtoUnsafeDeneb(protoState)
 	case hasCapellaKey(enc):
 		// Marshal state bytes to capella beacon state.
 		protoState := &ethpb.BeaconStateCapella{}
@@ -579,6 +654,19 @@ func marshalState(ctx context.Context, st state.ReadOnlyBeaconState) ([]byte, er
 			return nil, err
 		}
 		return snappy.Encode(nil, append(capellaKey, rawObj...)), nil
+	case *ethpb.BeaconStateDeneb:
+		rState, ok := st.ToProtoUnsafe().(*ethpb.BeaconStateDeneb)
+		if !ok {
+			return nil, errors.New("non valid inner state")
+		}
+		if rState == nil {
+			return nil, errors.New("nil state")
+		}
+		rawObj, err := rState.MarshalSSZ()
+		if err != nil {
+			return nil, err
+		}
+		return snappy.Encode(nil, append(denebKey, rawObj...)), nil
 	default:
 		return nil, errors.New("invalid inner state")
 	}

beacon-chain/db/kv/state_test.go

@@ -900,6 +900,100 @@ func TestBellatrixState_CanDelete(t *testing.T) {
 	require.Equal(t, state.ReadOnlyBeaconState(nil), savedS, "Unsaved state should've been nil")
 }
 
+func TestDenebState_CanSaveRetrieve(t *testing.T) {
+	db := setupDB(t)
+
+	r := [32]byte{'A'}
+
+	require.Equal(t, false, db.HasState(context.Background(), r))
+
+	st, _ := util.DeterministicGenesisStateDeneb(t, 1)
+	require.NoError(t, st.SetSlot(100))
+
+	require.NoError(t, db.SaveState(context.Background(), st, r))
+	require.Equal(t, true, db.HasState(context.Background(), r))
+
+	savedS, err := db.State(context.Background(), r)
+	require.NoError(t, err)
+
+	require.DeepSSZEqual(t, st.ToProtoUnsafe(), savedS.ToProtoUnsafe())
+
+	savedS, err = db.State(context.Background(), [32]byte{'B'})
+	require.NoError(t, err)
+	require.Equal(t, state.ReadOnlyBeaconState(nil), savedS, "Unsaved state should've been nil")
+}
+
+func TestDenebState_CanDelete(t *testing.T) {
+	db := setupDB(t)
+
+	r := [32]byte{'A'}
+
+	require.Equal(t, false, db.HasState(context.Background(), r))
+
+	st, _ := util.DeterministicGenesisStateDeneb(t, 1)
+	require.NoError(t, st.SetSlot(100))
+
+	require.NoError(t, db.SaveState(context.Background(), st, r))
+	require.Equal(t, true, db.HasState(context.Background(), r))
+
+	require.NoError(t, db.DeleteState(context.Background(), r))
+	savedS, err := db.State(context.Background(), r)
+	require.NoError(t, err)
+	require.Equal(t, state.ReadOnlyBeaconState(nil), savedS, "Unsaved state should've been nil")
+}
+
+func TestStateDeneb_CanSaveRetrieveValidatorEntries(t *testing.T) {
+	db := setupDB(t)
+
+	// enable historical state representation flag to test this
+	resetCfg := features.InitWithReset(&features.Flags{
+		EnableHistoricalSpaceRepresentation: true,
+	})
+	defer resetCfg()
+
+	r := [32]byte{'A'}
+
+	require.Equal(t, false, db.HasState(context.Background(), r))
+
+	stateValidators := validators(10)
+	st, _ := util.DeterministicGenesisStateDeneb(t, 20)
+	require.NoError(t, st.SetSlot(100))
+	require.NoError(t, st.SetValidators(stateValidators))
+
+	ctx := context.Background()
+	require.NoError(t, db.SaveState(ctx, st, r))
+	assert.Equal(t, true, db.HasState(context.Background(), r))
+
+	savedS, err := db.State(context.Background(), r)
+	require.NoError(t, err)
+
+	require.DeepSSZEqual(t, st.Validators(), savedS.Validators(), "saved state with validators and retrieved state are not matching")
+
+	// check if the index of the second state is still present.
+	err = db.db.Update(func(tx *bolt.Tx) error {
+		idxBkt := tx.Bucket(blockRootValidatorHashesBucket)
+		data := idxBkt.Get(r[:])
+		require.NotEqual(t, 0, len(data))
+		return nil
+	})
+	require.NoError(t, err)
+
+	// check if all the validator entries are still intact in the validator entry bucket.
+	err = db.db.Update(func(tx *bolt.Tx) error {
+		valBkt := tx.Bucket(stateValidatorsBucket)
+		// if any of the original validator entry is not present, then fail the test.
+		for _, val := range stateValidators {
+			hash, hashErr := val.HashTreeRoot()
+			assert.NoError(t, hashErr)
+			data := valBkt.Get(hash[:])
+			require.NotNil(t, data)
+			require.NotEqual(t, 0, len(data))
+		}
+		return nil
+	})
+	require.NoError(t, err)
+}
+
 func BenchmarkState_CheckStateSaveTime_1(b *testing.B)  { checkStateSaveTime(b, 1) }
 func BenchmarkState_CheckStateSaveTime_10(b *testing.B) { checkStateSaveTime(b, 10) }
 

beacon-chain/execution/BUILD.bazel

@@ -48,7 +48,6 @@ go_library(
         "//crypto/hash:go_default_library",
         "//encoding/bytesutil:go_default_library",
         "//io/logs:go_default_library",
-        "//math:go_default_library",
         "//monitoring/clientstats:go_default_library",
         "//monitoring/tracing:go_default_library",
         "//network:go_default_library",

beacon-chain/execution/engine_client.go

@@ -23,7 +23,6 @@ import (
 	payloadattribute "github.com/prysmaticlabs/prysm/v4/consensus-types/payload-attribute"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
-	"github.com/prysmaticlabs/prysm/v4/math"
 	pb "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
@@ -50,6 +49,7 @@ const (
 	NewPayloadMethod = "engine_newPayloadV1"
 	// NewPayloadMethodV2 v2 request string for JSON-RPC.
 	NewPayloadMethodV2 = "engine_newPayloadV2"
+	NewPayloadMethodV3 = "engine_newPayloadV3"
 	// ForkchoiceUpdatedMethod v1 request string for JSON-RPC.
 	ForkchoiceUpdatedMethod = "engine_forkchoiceUpdatedV1"
 	// ForkchoiceUpdatedMethodV2 v2 request string for JSON-RPC.
@@ -58,6 +58,7 @@ const (
 	GetPayloadMethod = "engine_getPayloadV1"
 	// GetPayloadMethodV2 v2 request string for JSON-RPC.
 	GetPayloadMethodV2 = "engine_getPayloadV2"
+	GetPayloadMethodV3 = "engine_getPayloadV3"
 	// ExchangeTransitionConfigurationMethod v1 request string for JSON-RPC.
 	ExchangeTransitionConfigurationMethod = "engine_exchangeTransitionConfigurationV1"
 	// ExecutionBlockByHashMethod request string for JSON-RPC.
@@ -96,11 +97,11 @@ type ExecutionPayloadReconstructor interface {
 // EngineCaller defines a client that can interact with an Ethereum
 // execution node's engine service via JSON-RPC.
 type EngineCaller interface {
-	NewPayload(ctx context.Context, payload interfaces.ExecutionData) ([]byte, error)
+	NewPayload(ctx context.Context, payload interfaces.ExecutionData, versionedHashes [][32]byte) ([]byte, error)
 	ForkchoiceUpdated(
 		ctx context.Context, state *pb.ForkchoiceState, attrs payloadattribute.Attributer,
 	) (*pb.PayloadIDBytes, []byte, error)
-	GetPayload(ctx context.Context, payloadId [8]byte, slot primitives.Slot) (interfaces.ExecutionData, error)
+	GetPayload(ctx context.Context, payloadId [8]byte, slot primitives.Slot) (interfaces.ExecutionData, *pb.BlobsBundle, error)
 	ExchangeTransitionConfiguration(
 		ctx context.Context, cfg *pb.TransitionConfiguration,
 	) error
@@ -111,7 +112,7 @@ type EngineCaller interface {
 var EmptyBlockHash = errors.New("Block hash is empty 0x0000...")
 
 // NewPayload calls the engine_newPayloadVX method via JSON-RPC.
-func (s *Service) NewPayload(ctx context.Context, payload interfaces.ExecutionData) ([]byte, error) {
+func (s *Service) NewPayload(ctx context.Context, payload interfaces.ExecutionData, versionedHashes [][32]byte) ([]byte, error) {
 	ctx, span := trace.StartSpan(ctx, "powchain.engine-api-client.NewPayload")
 	defer span.End()
 	start := time.Now()
@@ -143,6 +144,15 @@ func (s *Service) NewPayload(ctx context.Context, payload interfaces.ExecutionDa
 		if err != nil {
 			return nil, handleRPCError(err)
 		}
+	case *pb.ExecutionPayloadDeneb:
+		payloadPb, ok := payload.Proto().(*pb.ExecutionPayloadDeneb)
+		if !ok {
+			return nil, errors.New("execution data must be a Deneb execution payload")
+		}
+		err := s.rpcClient.CallContext(ctx, result, NewPayloadMethodV3, payloadPb, versionedHashes)
+		if err != nil {
+			return nil, handleRPCError(err)
+		}
 	default:
 		return nil, errors.New("unknown execution data type")
 	}
@@ -190,7 +200,7 @@ func (s *Service) ForkchoiceUpdated(
 		if err != nil {
 			return nil, nil, handleRPCError(err)
 		}
-	case version.Capella:
+	case version.Capella, version.Deneb:
 		a, err := attrs.PbV2()
 		if err != nil {
 			return nil, nil, err
@@ -220,7 +230,8 @@ func (s *Service) ForkchoiceUpdated(
 }
 
 // GetPayload calls the engine_getPayloadVX method via JSON-RPC.
-func (s *Service) GetPayload(ctx context.Context, payloadId [8]byte, slot primitives.Slot) (interfaces.ExecutionData, error) {
+// It returns the execution data as well as the blobs bundle.
+func (s *Service) GetPayload(ctx context.Context, payloadId [8]byte, slot primitives.Slot) (interfaces.ExecutionData, *pb.BlobsBundle, error) {
 	ctx, span := trace.StartSpan(ctx, "powchain.engine-api-client.GetPayload")
 	defer span.End()
 	start := time.Now()
@@ -232,23 +243,42 @@ func (s *Service) GetPayload(ctx context.Context, payloadId [8]byte, slot primit
 	ctx, cancel := context.WithDeadline(ctx, d)
 	defer cancel()
 
+	if slots.ToEpoch(slot) >= params.BeaconConfig().DenebForkEpoch {
+		result := &pb.ExecutionPayloadDenebWithValueAndBlobsBundle{}
+		err := s.rpcClient.CallContext(ctx, result, GetPayloadMethodV3, pb.PayloadIDBytes(payloadId))
+		if err != nil {
+			return nil, nil, handleRPCError(err)
+		}
+		ed, err := blocks.WrappedExecutionPayloadDeneb(result.Payload, blocks.PayloadValueToGwei(result.Value))
+		if err != nil {
+			return nil, nil, err
+		}
+		return ed, result.BlobsBundle, nil
+	}
+
 	if slots.ToEpoch(slot) >= params.BeaconConfig().CapellaForkEpoch {
 		result := &pb.ExecutionPayloadCapellaWithValue{}
 		err := s.rpcClient.CallContext(ctx, result, GetPayloadMethodV2, pb.PayloadIDBytes(payloadId))
 		if err != nil {
-			return nil, handleRPCError(err)
+			return nil, nil, handleRPCError(err)
 		}
-
-		v := big.NewInt(0).SetBytes(bytesutil.ReverseByteOrder(result.Value))
-		return blocks.WrappedExecutionPayloadCapella(result.Payload, math.WeiToGwei(v))
+		ed, err := blocks.WrappedExecutionPayloadCapella(result.Payload, blocks.PayloadValueToGwei(result.Value))
+		if err != nil {
+			return nil, nil, err
+		}
+		return ed, nil, nil
 	}
 
 	result := &pb.ExecutionPayload{}
 	err := s.rpcClient.CallContext(ctx, result, GetPayloadMethod, pb.PayloadIDBytes(payloadId))
 	if err != nil {
-		return nil, handleRPCError(err)
+		return nil, nil, handleRPCError(err)
 	}
-	return blocks.WrappedExecutionPayload(result)
+	ed, err := blocks.WrappedExecutionPayload(result)
+	if err != nil {
+		return nil, nil, err
+	}
+	return ed, nil, nil
 }
 
 // ExchangeTransitionConfiguration calls the engine_exchangeTransitionConfigurationV1 method via JSON-RPC.
@@ -684,7 +714,8 @@ func fullPayloadFromExecutionBlock(
 		txs[i] = txBin
 	}
 
-	if block.Version == version.Bellatrix {
+	switch block.Version {
+	case version.Bellatrix:
 		return blocks.WrappedExecutionPayload(&pb.ExecutionPayload{
 			ParentHash:    header.ParentHash(),
 			FeeRecipient:  header.FeeRecipient(),
@@ -701,24 +732,51 @@ func fullPayloadFromExecutionBlock(
 			BlockHash:     blockHash[:],
 			Transactions:  txs,
 		})
+	case version.Capella:
+		return blocks.WrappedExecutionPayloadCapella(&pb.ExecutionPayloadCapella{
+			ParentHash:    header.ParentHash(),
+			FeeRecipient:  header.FeeRecipient(),
+			StateRoot:     header.StateRoot(),
+			ReceiptsRoot:  header.ReceiptsRoot(),
+			LogsBloom:     header.LogsBloom(),
+			PrevRandao:    header.PrevRandao(),
+			BlockNumber:   header.BlockNumber(),
+			GasLimit:      header.GasLimit(),
+			GasUsed:       header.GasUsed(),
+			Timestamp:     header.Timestamp(),
+			ExtraData:     header.ExtraData(),
+			BaseFeePerGas: header.BaseFeePerGas(),
+			BlockHash:     blockHash[:],
+			Transactions:  txs,
+			Withdrawals:   block.Withdrawals,
+		}, 0) // We can't get the block value and don't care about the block value for this instance
+	case version.Deneb:
+		edg, err := header.ExcessDataGas()
+		if err != nil {
+			return nil, errors.Wrap(err, "unable to extract ExcessDataGas attribute from excution payload header")
+		}
+		return blocks.WrappedExecutionPayloadDeneb(
+			&pb.ExecutionPayloadDeneb{
+				ParentHash:    header.ParentHash(),
+				FeeRecipient:  header.FeeRecipient(),
+				StateRoot:     header.StateRoot(),
+				ReceiptsRoot:  header.ReceiptsRoot(),
+				LogsBloom:     header.LogsBloom(),
+				PrevRandao:    header.PrevRandao(),
+				BlockNumber:   header.BlockNumber(),
+				GasLimit:      header.GasLimit(),
+				GasUsed:       header.GasUsed(),
+				Timestamp:     header.Timestamp(),
+				ExtraData:     header.ExtraData(),
+				BaseFeePerGas: header.BaseFeePerGas(),
+				BlockHash:     blockHash[:],
+				Transactions:  txs,
+				Withdrawals:   block.Withdrawals,
+				ExcessDataGas: edg,
+			}, 0) // We can't get the block value and don't care about the block value for this instance
+	default:
+		return nil, fmt.Errorf("unknown execution block version %d", block.Version)
 	}
-	return blocks.WrappedExecutionPayloadCapella(&pb.ExecutionPayloadCapella{
-		ParentHash:    header.ParentHash(),
-		FeeRecipient:  header.FeeRecipient(),
-		StateRoot:     header.StateRoot(),
-		ReceiptsRoot:  header.ReceiptsRoot(),
-		LogsBloom:     header.LogsBloom(),
-		PrevRandao:    header.PrevRandao(),
-		BlockNumber:   header.BlockNumber(),
-		GasLimit:      header.GasLimit(),
-		GasUsed:       header.GasUsed(),
-		Timestamp:     header.Timestamp(),
-		ExtraData:     header.ExtraData(),
-		BaseFeePerGas: header.BaseFeePerGas(),
-		BlockHash:     blockHash[:],
-		Transactions:  txs,
-		Withdrawals:   block.Withdrawals,
-	}, 0) // We can't get the block value and don't care about the block value for this instance
 }
 
 // Handles errors received from the RPC server according to the specification.

beacon-chain/execution/engine_client_test.go

@@ -75,7 +75,7 @@ func TestClient_IPC(t *testing.T) {
 		want, ok := fix["ExecutionPayload"].(*pb.ExecutionPayload)
 		require.Equal(t, true, ok)
 		payloadId := [8]byte{1}
-		resp, err := srv.GetPayload(ctx, payloadId, 1)
+		resp, _, err := srv.GetPayload(ctx, payloadId, 1)
 		require.NoError(t, err)
 		resPb, err := resp.PbBellatrix()
 		require.NoError(t, err)
@@ -85,7 +85,7 @@ func TestClient_IPC(t *testing.T) {
 		want, ok := fix["ExecutionPayloadCapellaWithValue"].(*pb.ExecutionPayloadCapellaWithValue)
 		require.Equal(t, true, ok)
 		payloadId := [8]byte{1}
-		resp, err := srv.GetPayload(ctx, payloadId, params.BeaconConfig().SlotsPerEpoch)
+		resp, _, err := srv.GetPayload(ctx, payloadId, params.BeaconConfig().SlotsPerEpoch)
 		require.NoError(t, err)
 		resPb, err := resp.PbCapella()
 		require.NoError(t, err)
@@ -118,7 +118,7 @@ func TestClient_IPC(t *testing.T) {
 		require.Equal(t, true, ok)
 		wrappedPayload, err := blocks.WrappedExecutionPayload(req)
 		require.NoError(t, err)
-		latestValidHash, err := srv.NewPayload(ctx, wrappedPayload)
+		latestValidHash, err := srv.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.NoError(t, err)
 		require.DeepEqual(t, bytesutil.ToBytes32(want.LatestValidHash), bytesutil.ToBytes32(latestValidHash))
 	})
@@ -129,7 +129,7 @@ func TestClient_IPC(t *testing.T) {
 		require.Equal(t, true, ok)
 		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(req, 0)
 		require.NoError(t, err)
-		latestValidHash, err := srv.NewPayload(ctx, wrappedPayload)
+		latestValidHash, err := srv.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.NoError(t, err)
 		require.DeepEqual(t, bytesutil.ToBytes32(want.LatestValidHash), bytesutil.ToBytes32(latestValidHash))
 	})
@@ -163,6 +163,7 @@ func TestClient_HTTP(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	cfg := params.BeaconConfig().Copy()
 	cfg.CapellaForkEpoch = 1
+	cfg.DenebForkEpoch = 2
 	params.OverrideBeaconConfig(cfg)
 
 	t.Run(GetPayloadMethod, func(t *testing.T) {
@@ -203,7 +204,7 @@ func TestClient_HTTP(t *testing.T) {
 		client.rpcClient = rpcClient
 
 		// We call the RPC method via HTTP and expect a proper result.
-		resp, err := client.GetPayload(ctx, payloadId, 1)
+		resp, _, err := client.GetPayload(ctx, payloadId, 1)
 		require.NoError(t, err)
 		pb, err := resp.PbBellatrix()
 		require.NoError(t, err)
@@ -247,7 +248,7 @@ func TestClient_HTTP(t *testing.T) {
 		client.rpcClient = rpcClient
 
 		// We call the RPC method via HTTP and expect a proper result.
-		resp, err := client.GetPayload(ctx, payloadId, params.BeaconConfig().SlotsPerEpoch)
+		resp, _, err := client.GetPayload(ctx, payloadId, params.BeaconConfig().SlotsPerEpoch)
 		require.NoError(t, err)
 		pb, err := resp.PbCapella()
 		require.NoError(t, err)
@@ -262,6 +263,60 @@ func TestClient_HTTP(t *testing.T) {
 		require.NoError(t, err)
 		require.Equal(t, uint64(1236), v)
 	})
+	t.Run(GetPayloadMethodV3, func(t *testing.T) {
+		payloadId := [8]byte{1}
+		want, ok := fix["ExecutionPayloadDenebWithValue"].(*pb.GetPayloadV3ResponseJson)
+		require.Equal(t, true, ok)
+		srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-Type", "application/json")
+			defer func() {
+				require.NoError(t, r.Body.Close())
+			}()
+			enc, err := io.ReadAll(r.Body)
+			require.NoError(t, err)
+			jsonRequestString := string(enc)
+
+			reqArg, err := json.Marshal(pb.PayloadIDBytes(payloadId))
+			require.NoError(t, err)
+
+			// We expect the JSON string RPC request contains the right arguments.
+			require.Equal(t, true, strings.Contains(
+				jsonRequestString, string(reqArg),
+			))
+			resp := map[string]interface{}{
+				"jsonrpc": "2.0",
+				"id":      1,
+				"result":  want,
+			}
+			err = json.NewEncoder(w).Encode(resp)
+			require.NoError(t, err)
+		}))
+		defer srv.Close()
+
+		rpcClient, err := rpc.DialHTTP(srv.URL)
+		require.NoError(t, err)
+		defer rpcClient.Close()
+
+		client := &Service{}
+		client.rpcClient = rpcClient
+
+		// We call the RPC method via HTTP and expect a proper result.
+		resp, blobsBundle, err := client.GetPayload(ctx, payloadId, 2*params.BeaconConfig().SlotsPerEpoch)
+		require.NoError(t, err)
+		g, err := resp.ExcessDataGas()
+		require.NoError(t, err)
+		require.DeepEqual(t, uint64(3), g)
+		g, err = resp.DataGasUsed()
+		require.NoError(t, err)
+		require.DeepEqual(t, uint64(2), g)
+
+		commitments := [][]byte{bytesutil.PadTo([]byte("commitment1"), fieldparams.BLSPubkeyLength), bytesutil.PadTo([]byte("commitment2"), fieldparams.BLSPubkeyLength)}
+		require.DeepEqual(t, commitments, blobsBundle.KzgCommitments)
+		proofs := [][]byte{bytesutil.PadTo([]byte("proof1"), fieldparams.BLSPubkeyLength), bytesutil.PadTo([]byte("proof2"), fieldparams.BLSPubkeyLength)}
+		require.DeepEqual(t, proofs, blobsBundle.Proofs)
+		blobs := [][]byte{bytesutil.PadTo([]byte("a"), fieldparams.BlobLength), bytesutil.PadTo([]byte("b"), fieldparams.BlobLength)}
+		require.DeepEqual(t, blobs, blobsBundle.Blobs)
+	})
 	t.Run(ForkchoiceUpdatedMethod+" VALID status", func(t *testing.T) {
 		forkChoiceState := &pb.ForkchoiceState{
 			HeadBlockHash:      []byte("head"),
@@ -412,7 +467,7 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayload(execPayload)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.NoError(t, err)
 		require.DeepEqual(t, want.LatestValidHash, resp)
 	})
@@ -426,7 +481,21 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
+		require.NoError(t, err)
+		require.DeepEqual(t, want.LatestValidHash, resp)
+	})
+	t.Run(NewPayloadMethodV3+" VALID status", func(t *testing.T) {
+		execPayload, ok := fix["ExecutionPayloadDeneb"].(*pb.ExecutionPayloadDeneb)
+		require.Equal(t, true, ok)
+		want, ok := fix["ValidPayloadStatus"].(*pb.PayloadStatus)
+		require.Equal(t, true, ok)
+		client := newPayloadV3Setup(t, want, execPayload)
+
+		// We call the RPC method via HTTP and expect a proper result.
+		wrappedPayload, err := blocks.WrappedExecutionPayloadDeneb(execPayload, 0)
+		require.NoError(t, err)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.NoError(t, err)
 		require.DeepEqual(t, want.LatestValidHash, resp)
 	})
@@ -440,7 +509,7 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayload(execPayload)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrAcceptedSyncingPayloadStatus, err)
 		require.DeepEqual(t, []uint8(nil), resp)
 	})
@@ -454,7 +523,21 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
+		require.ErrorIs(t, ErrAcceptedSyncingPayloadStatus, err)
+		require.DeepEqual(t, []uint8(nil), resp)
+	})
+	t.Run(NewPayloadMethodV3+" SYNCING status", func(t *testing.T) {
+		execPayload, ok := fix["ExecutionPayloadDeneb"].(*pb.ExecutionPayloadDeneb)
+		require.Equal(t, true, ok)
+		want, ok := fix["SyncingStatus"].(*pb.PayloadStatus)
+		require.Equal(t, true, ok)
+		client := newPayloadV3Setup(t, want, execPayload)
+
+		// We call the RPC method via HTTP and expect a proper result.
+		wrappedPayload, err := blocks.WrappedExecutionPayloadDeneb(execPayload, 0)
+		require.NoError(t, err)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrAcceptedSyncingPayloadStatus, err)
 		require.DeepEqual(t, []uint8(nil), resp)
 	})
@@ -468,7 +551,7 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayload(execPayload)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrInvalidBlockHashPayloadStatus, err)
 		require.DeepEqual(t, []uint8(nil), resp)
 	})
@@ -482,7 +565,21 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
+		require.ErrorIs(t, ErrInvalidBlockHashPayloadStatus, err)
+		require.DeepEqual(t, []uint8(nil), resp)
+	})
+	t.Run(NewPayloadMethodV3+" INVALID_BLOCK_HASH status", func(t *testing.T) {
+		execPayload, ok := fix["ExecutionPayloadDeneb"].(*pb.ExecutionPayloadDeneb)
+		require.Equal(t, true, ok)
+		want, ok := fix["InvalidBlockHashStatus"].(*pb.PayloadStatus)
+		require.Equal(t, true, ok)
+		client := newPayloadV3Setup(t, want, execPayload)
+
+		// We call the RPC method via HTTP and expect a proper result.
+		wrappedPayload, err := blocks.WrappedExecutionPayloadDeneb(execPayload, 0)
+		require.NoError(t, err)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrInvalidBlockHashPayloadStatus, err)
 		require.DeepEqual(t, []uint8(nil), resp)
 	})
@@ -496,7 +593,7 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayload(execPayload)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrInvalidPayloadStatus, err)
 		require.DeepEqual(t, want.LatestValidHash, resp)
 	})
@@ -510,7 +607,21 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayloadCapella(execPayload, 0)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
+		require.ErrorIs(t, ErrInvalidPayloadStatus, err)
+		require.DeepEqual(t, want.LatestValidHash, resp)
+	})
+	t.Run(NewPayloadMethodV3+" INVALID status", func(t *testing.T) {
+		execPayload, ok := fix["ExecutionPayloadDeneb"].(*pb.ExecutionPayloadDeneb)
+		require.Equal(t, true, ok)
+		want, ok := fix["InvalidStatus"].(*pb.PayloadStatus)
+		require.Equal(t, true, ok)
+		client := newPayloadV3Setup(t, want, execPayload)
+
+		// We call the RPC method via HTTP and expect a proper result.
+		wrappedPayload, err := blocks.WrappedExecutionPayloadDeneb(execPayload, 0)
+		require.NoError(t, err)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrInvalidPayloadStatus, err)
 		require.DeepEqual(t, want.LatestValidHash, resp)
 	})
@@ -524,7 +635,7 @@ func TestClient_HTTP(t *testing.T) {
 		// We call the RPC method via HTTP and expect a proper result.
 		wrappedPayload, err := blocks.WrappedExecutionPayload(execPayload)
 		require.NoError(t, err)
-		resp, err := client.NewPayload(ctx, wrappedPayload)
+		resp, err := client.NewPayload(ctx, wrappedPayload, [][32]byte{})
 		require.ErrorIs(t, ErrUnknownPayloadStatus, err)
 		require.DeepEqual(t, []uint8(nil), resp)
 	})
@@ -1306,6 +1417,25 @@ func fixtures() map[string]interface{} {
 		Transactions:  [][]byte{foo[:]},
 		Withdrawals:   []*pb.Withdrawal{},
 	}
+	executionPayloadFixtureDeneb := &pb.ExecutionPayloadDeneb{
+		ParentHash:    foo[:],
+		FeeRecipient:  bar,
+		StateRoot:     foo[:],
+		ReceiptsRoot:  foo[:],
+		LogsBloom:     baz,
+		PrevRandao:    foo[:],
+		BlockNumber:   1,
+		GasLimit:      1,
+		GasUsed:       1,
+		Timestamp:     1,
+		ExtraData:     foo[:],
+		BaseFeePerGas: bytesutil.PadTo(baseFeePerGas.Bytes(), fieldparams.RootLength),
+		BlockHash:     foo[:],
+		Transactions:  [][]byte{foo[:]},
+		Withdrawals:   []*pb.Withdrawal{},
+		DataGasUsed:   2,
+		ExcessDataGas: 3,
+	}
 	hexUint := hexutil.Uint64(1)
 	executionPayloadWithValueFixtureCapella := &pb.GetPayloadV2ResponseJson{
 		ExecutionPayload: &pb.ExecutionPayloadCapellaJSON{
@@ -1326,6 +1456,34 @@ func fixtures() map[string]interface{} {
 		},
 		BlockValue: "0x11fffffffff",
 	}
+	dgu := hexutil.Uint64(2)
+	edg := hexutil.Uint64(3)
+	executionPayloadWithValueFixtureDeneb := &pb.GetPayloadV3ResponseJson{
+		ExecutionPayload: &pb.ExecutionPayloadDenebJSON{
+			ParentHash:    &common.Hash{'a'},
+			FeeRecipient:  &common.Address{'b'},
+			StateRoot:     &common.Hash{'c'},
+			ReceiptsRoot:  &common.Hash{'d'},
+			LogsBloom:     &hexutil.Bytes{'e'},
+			PrevRandao:    &common.Hash{'f'},
+			BaseFeePerGas: "0x123",
+			BlockHash:     &common.Hash{'g'},
+			Transactions:  []hexutil.Bytes{{'h'}},
+			Withdrawals:   []*pb.Withdrawal{},
+			BlockNumber:   &hexUint,
+			GasLimit:      &hexUint,
+			GasUsed:       &hexUint,
+			Timestamp:     &hexUint,
+			DataGasUsed:   &dgu,
+			ExcessDataGas: &edg,
+		},
+		BlockValue: "0x11fffffffff",
+		BlobsBundle: &pb.BlobBundleJSON{
+			Commitments: [][48]byte{bytesutil.ToBytes48([]byte("commitment1")), bytesutil.ToBytes48([]byte("commitment2"))},
+			Proofs:      [][48]byte{bytesutil.ToBytes48([]byte("proof1")), bytesutil.ToBytes48([]byte("proof2"))},
+			Blobs:       [][]byte{{'a'}, {'b'}},
+		},
+	}
 	parent := bytesutil.PadTo([]byte("parentHash"), fieldparams.RootLength)
 	sha3Uncles := bytesutil.PadTo([]byte("sha3Uncles"), fieldparams.RootLength)
 	miner := bytesutil.PadTo([]byte("miner"), fieldparams.FeeRecipientLength)
@@ -1421,7 +1579,9 @@ func fixtures() map[string]interface{} {
 		"ExecutionBlock":                    executionBlock,
 		"ExecutionPayload":                  executionPayloadFixture,
 		"ExecutionPayloadCapella":           executionPayloadFixtureCapella,
+		"ExecutionPayloadDeneb":             executionPayloadFixtureDeneb,
 		"ExecutionPayloadCapellaWithValue":  executionPayloadWithValueFixtureCapella,
+		"ExecutionPayloadDenebWithValue":    executionPayloadWithValueFixtureDeneb,
 		"ValidPayloadStatus":                validStatus,
 		"InvalidBlockHashStatus":            inValidBlockHashStatus,
 		"AcceptedStatus":                    acceptedStatus,
@@ -1496,6 +1656,126 @@ func Test_fullPayloadFromExecutionBlock(t *testing.T) {
 	}
 }
 
+func Test_fullPayloadFromExecutionBlockCapella(t *testing.T) {
+	type args struct {
+		header *pb.ExecutionPayloadHeaderCapella
+		block  *pb.ExecutionBlock
+	}
+	wantedHash := common.BytesToHash([]byte("foo"))
+	tests := []struct {
+		name string
+		args args
+		want func() interfaces.ExecutionData
+		err  string
+	}{
+		{
+			name: "block hash field in header and block hash mismatch",
+			args: args{
+				header: &pb.ExecutionPayloadHeaderCapella{
+					BlockHash: []byte("foo"),
+				},
+				block: &pb.ExecutionBlock{
+					Version: version.Capella,
+					Hash:    common.BytesToHash([]byte("bar")),
+				},
+			},
+			err: "does not match execution block hash",
+		},
+		{
+			name: "ok",
+			args: args{
+				header: &pb.ExecutionPayloadHeaderCapella{
+					BlockHash: wantedHash[:],
+				},
+				block: &pb.ExecutionBlock{
+					Version: version.Capella,
+					Hash:    wantedHash,
+				},
+			},
+			want: func() interfaces.ExecutionData {
+				p, err := blocks.WrappedExecutionPayloadCapella(&pb.ExecutionPayloadCapella{
+					BlockHash:    wantedHash[:],
+					Transactions: [][]byte{},
+				}, 0)
+				require.NoError(t, err)
+				return p
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			wrapped, err := blocks.WrappedExecutionPayloadHeaderCapella(tt.args.header, 0)
+			require.NoError(t, err)
+			got, err := fullPayloadFromExecutionBlock(wrapped, tt.args.block)
+			if err != nil {
+				assert.ErrorContains(t, tt.err, err)
+			} else {
+				assert.DeepEqual(t, tt.want(), got)
+			}
+		})
+	}
+}
+
+func Test_fullPayloadFromExecutionBlockDeneb(t *testing.T) {
+	type args struct {
+		header *pb.ExecutionPayloadHeaderDeneb
+		block  *pb.ExecutionBlock
+	}
+	wantedHash := common.BytesToHash([]byte("foo"))
+	tests := []struct {
+		name string
+		args args
+		want func() interfaces.ExecutionData
+		err  string
+	}{
+		{
+			name: "block hash field in header and block hash mismatch",
+			args: args{
+				header: &pb.ExecutionPayloadHeaderDeneb{
+					BlockHash: []byte("foo"),
+				},
+				block: &pb.ExecutionBlock{
+					Version: version.Deneb,
+					Hash:    common.BytesToHash([]byte("bar")),
+				},
+			},
+			err: "does not match execution block hash",
+		},
+		{
+			name: "ok",
+			args: args{
+				header: &pb.ExecutionPayloadHeaderDeneb{
+					BlockHash: wantedHash[:],
+				},
+				block: &pb.ExecutionBlock{
+					Version: version.Deneb,
+					Hash:    wantedHash,
+				},
+			},
+			want: func() interfaces.ExecutionData {
+				p, err := blocks.WrappedExecutionPayloadDeneb(&pb.ExecutionPayloadDeneb{
+					BlockHash:    wantedHash[:],
+					Transactions: [][]byte{},
+				}, 0)
+				require.NoError(t, err)
+				return p
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			wrapped, err := blocks.WrappedExecutionPayloadHeaderDeneb(tt.args.header, 0)
+			require.NoError(t, err)
+			got, err := fullPayloadFromExecutionBlock(wrapped, tt.args.block)
+			if err != nil {
+				assert.ErrorContains(t, tt.err, err)
+			} else {
+				assert.DeepEqual(t, tt.want(), got)
+			}
+		})
+	}
+}
+
 func TestHeaderByHash_NotFound(t *testing.T) {
 	srv := &Service{}
 	srv.rpcClient = RPCClientBad{}
@@ -1819,6 +2099,40 @@ func newPayloadV2Setup(t *testing.T, status *pb.PayloadStatus, payload *pb.Execu
 	return service
 }
 
+func newPayloadV3Setup(t *testing.T, status *pb.PayloadStatus, payload *pb.ExecutionPayloadDeneb) *Service {
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		defer func() {
+			require.NoError(t, r.Body.Close())
+		}()
+		enc, err := io.ReadAll(r.Body)
+		require.NoError(t, err)
+		jsonRequestString := string(enc)
+
+		reqArg, err := json.Marshal(payload)
+		require.NoError(t, err)
+
+		// We expect the JSON string RPC request contains the right arguments.
+		require.Equal(t, true, strings.Contains(
+			jsonRequestString, string(reqArg),
+		))
+		resp := map[string]interface{}{
+			"jsonrpc": "2.0",
+			"id":      1,
+			"result":  status,
+		}
+		err = json.NewEncoder(w).Encode(resp)
+		require.NoError(t, err)
+	}))
+
+	rpcClient, err := rpc.DialHTTP(srv.URL)
+	require.NoError(t, err)
+
+	service := &Service{}
+	service.rpcClient = rpcClient
+	return service
+}
+
 func TestCapella_PayloadBodiesByHash(t *testing.T) {
 	resetFn := features.InitWithReset(&features.Flags{
 		EnableOptionalEngineMethods: true,

beacon-chain/execution/testing/BUILD.bazel

@@ -23,6 +23,7 @@ go_library(
         "//consensus-types/payload-attribute:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//math:go_default_library",
         "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//time/slots:go_default_library",

beacon-chain/execution/testing/mock_engine_client.go

@@ -14,6 +14,7 @@ import (
 	payloadattribute "github.com/prysmaticlabs/prysm/v4/consensus-types/payload-attribute"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/math"
 	pb "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 )
@@ -25,6 +26,7 @@ type EngineClient struct {
 	ForkChoiceUpdatedResp       []byte
 	ExecutionPayload            *pb.ExecutionPayload
 	ExecutionPayloadCapella     *pb.ExecutionPayloadCapella
+	ExecutionPayloadDeneb       *pb.ExecutionPayloadDeneb
 	ExecutionBlock              *pb.ExecutionBlock
 	Err                         error
 	ErrLatestExecBlock          error
@@ -39,10 +41,11 @@ type EngineClient struct {
 	TerminalBlockHashExists     bool
 	OverrideValidHash           [32]byte
 	BlockValue                  uint64
+	BlobsBundle                 *pb.BlobsBundle
 }
 
 // NewPayload --
-func (e *EngineClient) NewPayload(_ context.Context, _ interfaces.ExecutionData) ([]byte, error) {
+func (e *EngineClient) NewPayload(_ context.Context, _ interfaces.ExecutionData, _ [][32]byte) ([]byte, error) {
 	return e.NewPayloadResp, e.ErrNewPayload
 }
 
@@ -57,15 +60,26 @@ func (e *EngineClient) ForkchoiceUpdated(
 }
 
 // GetPayload --
-func (e *EngineClient) GetPayload(_ context.Context, _ [8]byte, s primitives.Slot) (interfaces.ExecutionData, error) {
+func (e *EngineClient) GetPayload(_ context.Context, _ [8]byte, s primitives.Slot) (interfaces.ExecutionData, *pb.BlobsBundle, error) {
+	if slots.ToEpoch(s) >= params.BeaconConfig().DenebForkEpoch {
+		ed, err := blocks.WrappedExecutionPayloadDeneb(e.ExecutionPayloadDeneb, math.Gwei(e.BlockValue))
+		if err != nil {
+			return nil, nil, err
+		}
+		return ed, e.BlobsBundle, nil
+	}
 	if slots.ToEpoch(s) >= params.BeaconConfig().CapellaForkEpoch {
-		return blocks.WrappedExecutionPayloadCapella(e.ExecutionPayloadCapella, e.BlockValue)
+		ed, err := blocks.WrappedExecutionPayloadCapella(e.ExecutionPayloadCapella, math.Gwei(e.BlockValue))
+		if err != nil {
+			return nil, nil, err
+		}
+		return ed, nil, nil
 	}
 	p, err := blocks.WrappedExecutionPayload(e.ExecutionPayload)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
-	return p, e.ErrGetPayload
+	return p, nil, e.ErrGetPayload
 }
 
 // ExchangeTransitionConfiguration --

beacon-chain/node/config_test.go

@@ -158,8 +158,7 @@ func TestConfigureNetwork_ConfigFile(t *testing.T) {
 			return cmd.LoadFlagsFromConfig(cliCtx, comFlags)
 		},
 		Action: func(cliCtx *cli.Context) error {
-			//TODO: https://github.com/urfave/cli/issues/1197 right now does not set flag
-			require.Equal(t, false, cliCtx.IsSet(cmd.BootstrapNode.Name))
+			require.Equal(t, true, cliCtx.IsSet(cmd.BootstrapNode.Name))
 
 			require.Equal(t, strings.Join([]string{"node1", "node2"}, ","),
 				strings.Join(cliCtx.StringSlice(cmd.BootstrapNode.Name), ","))

beacon-chain/p2p/broadcaster.go

@@ -202,6 +202,67 @@ func (s *Service) broadcastSyncCommittee(ctx context.Context, subnet uint64, sMs
 	}
 }
 
+// BroadcastBlob broadcasts a blob to the p2p network, the message is assumed to be
+// broadcasted to the current fork and to the input subnet.
+func (s *Service) BroadcastBlob(ctx context.Context, subnet uint64, blob *ethpb.SignedBlobSidecar) error {
+	ctx, span := trace.StartSpan(ctx, "p2p.BroadcastBlob")
+	defer span.End()
+	if blob == nil {
+		return errors.New("attempted to broadcast nil blob sidecar")
+	}
+	forkDigest, err := s.currentForkDigest()
+	if err != nil {
+		err := errors.Wrap(err, "could not retrieve fork digest")
+		tracing.AnnotateError(span, err)
+		return err
+	}
+
+	// Non-blocking broadcast, with attempts to discover a subnet peer if none available.
+	go s.broadcastBlob(ctx, subnet, blob, forkDigest)
+
+	return nil
+}
+
+func (s *Service) broadcastBlob(ctx context.Context, subnet uint64, blobSidecar *ethpb.SignedBlobSidecar, forkDigest [4]byte) {
+	_, span := trace.StartSpan(ctx, "p2p.broadcastBlob")
+	defer span.End()
+	ctx = trace.NewContext(context.Background(), span) // clear parent context / deadline.
+
+	oneSlot := time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second
+	ctx, cancel := context.WithTimeout(ctx, oneSlot)
+	defer cancel()
+
+	wrappedSubIdx := subnet + blobSubnetLockerVal
+	s.subnetLocker(wrappedSubIdx).RLock()
+	hasPeer := s.hasPeerWithSubnet(blobSubnetToTopic(subnet, forkDigest))
+	s.subnetLocker(wrappedSubIdx).RUnlock()
+
+	if !hasPeer {
+		blobSidecarCommitteeBroadcastAttempts.Inc()
+		if err := func() error {
+			s.subnetLocker(wrappedSubIdx).Lock()
+			defer s.subnetLocker(wrappedSubIdx).Unlock()
+			ok, err := s.FindPeersWithSubnet(ctx, blobSubnetToTopic(subnet, forkDigest), subnet, 1)
+			if err != nil {
+				return err
+			}
+			if ok {
+				blobSidecarCommitteeBroadcasts.Inc()
+				return nil
+			}
+			return errors.New("failed to find peers for subnet")
+		}(); err != nil {
+			log.WithError(err).Error("Failed to find peers")
+			tracing.AnnotateError(span, err)
+		}
+	}
+
+	if err := s.broadcastObject(ctx, blobSidecar, blobSubnetToTopic(subnet, forkDigest)); err != nil {
+		log.WithError(err).Error("Failed to broadcast blob sidecar")
+		tracing.AnnotateError(span, err)
+	}
+}
+
 // method to broadcast messages to other peers in our gossip mesh.
 func (s *Service) broadcastObject(ctx context.Context, obj ssz.Marshaler, topic string) error {
 	ctx, span := trace.StartSpan(ctx, "p2p.broadcastObject")
@@ -238,3 +299,7 @@ func attestationToTopic(subnet uint64, forkDigest [4]byte) string {
 func syncCommitteeToTopic(subnet uint64, forkDigest [4]byte) string {
 	return fmt.Sprintf(SyncCommitteeSubnetTopicFormat, forkDigest, subnet)
 }
+
+func blobSubnetToTopic(subnet uint64, forkDigest [4]byte) string {
+	return fmt.Sprintf(BlobSubnetTopicFormat, forkDigest, subnet)
+}

beacon-chain/p2p/broadcaster_test.go

@@ -17,6 +17,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p/peers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p/peers/scorers"
 	p2ptest "github.com/prysmaticlabs/prysm/v4/beacon-chain/p2p/testing"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/wrapper"
 	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
@@ -447,3 +448,76 @@ func TestService_BroadcastSyncCommittee(t *testing.T) {
 		t.Error("Failed to receive pubsub within 1s")
 	}
 }
+
+func TestService_BroadcastBlob(t *testing.T) {
+	p1 := p2ptest.NewTestP2P(t)
+	p2 := p2ptest.NewTestP2P(t)
+	p1.Connect(p2)
+	require.NotEqual(t, 0, len(p1.BHost.Network().Peers()), "No peers")
+
+	p := &Service{
+		host:                  p1.BHost,
+		pubsub:                p1.PubSub(),
+		joinedTopics:          map[string]*pubsub.Topic{},
+		cfg:                   &Config{},
+		genesisTime:           time.Now(),
+		genesisValidatorsRoot: bytesutil.PadTo([]byte{'A'}, 32),
+		subnetsLock:           make(map[uint64]*sync.RWMutex),
+		subnetsLockLock:       sync.Mutex{},
+		peers: peers.NewStatus(context.Background(), &peers.StatusConfig{
+			ScorerParams: &scorers.Config{},
+		}),
+	}
+
+	blobSidecar := &ethpb.SignedBlobSidecar{
+		Message: &ethpb.BlobSidecar{
+			BlockRoot:       bytesutil.PadTo([]byte{'A'}, fieldparams.RootLength),
+			Index:           1,
+			Slot:            2,
+			BlockParentRoot: bytesutil.PadTo([]byte{'B'}, fieldparams.RootLength),
+			ProposerIndex:   3,
+			Blob:            bytesutil.PadTo([]byte{'C'}, fieldparams.BlobLength),
+			KzgCommitment:   bytesutil.PadTo([]byte{'D'}, fieldparams.BLSPubkeyLength),
+			KzgProof:        bytesutil.PadTo([]byte{'E'}, fieldparams.BLSPubkeyLength),
+		},
+		Signature: bytesutil.PadTo([]byte{'F'}, fieldparams.BLSSignatureLength),
+	}
+	subnet := uint64(0)
+
+	topic := BlobSubnetTopicFormat
+	GossipTypeMapping[reflect.TypeOf(blobSidecar)] = topic
+	digest, err := p.currentForkDigest()
+	require.NoError(t, err)
+	topic = fmt.Sprintf(topic, digest, subnet)
+
+	// External peer subscribes to the topic.
+	topic += p.Encoding().ProtocolSuffix()
+	sub, err := p2.SubscribeToTopic(topic)
+	require.NoError(t, err)
+
+	time.Sleep(50 * time.Millisecond) // libp2p fails without this delay...
+
+	// Async listen for the pubsub, must be before the broadcast.
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func(tt *testing.T) {
+		defer wg.Done()
+		ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+		defer cancel()
+
+		incomingMessage, err := sub.Next(ctx)
+		require.NoError(t, err)
+
+		result := &ethpb.SignedBlobSidecar{}
+		require.NoError(t, p.Encoding().DecodeGossip(incomingMessage.Data, result))
+		require.DeepEqual(t, result, blobSidecar)
+	}(t)
+
+	// Attempt to broadcast nil object should fail.
+	ctx := context.Background()
+	require.ErrorContains(t, "attempted to broadcast nil", p.BroadcastBlob(ctx, subnet, nil))
+
+	// Broadcast to peers and wait.
+	require.NoError(t, p.BroadcastBlob(ctx, subnet, blobSidecar))
+	require.Equal(t, false, util.WaitTimeout(&wg, 1*time.Second), "Failed to receive pubsub within 1s")
+}

beacon-chain/p2p/gossip_topic_mappings.go

@@ -21,6 +21,7 @@ var gossipTopicMappings = map[string]proto.Message{
 	SyncContributionAndProofSubnetTopicFormat: &ethpb.SignedContributionAndProof{},
 	SyncCommitteeSubnetTopicFormat:            &ethpb.SyncCommitteeMessage{},
 	BlsToExecutionChangeSubnetTopicFormat:     &ethpb.SignedBLSToExecutionChange{},
+	BlobSubnetTopicFormat:                     &ethpb.SignedBlobSidecar{},
 }
 
 // GossipTopicMappings is a function to return the assigned data type
@@ -62,6 +63,8 @@ func init() {
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockAltair{})] = BlockSubnetTopicFormat
 	// Specially handle Bellatrix objects.
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockBellatrix{})] = BlockSubnetTopicFormat
-	// Specially handle Capella objects
+	// Specially handle Capella objects.
 	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockCapella{})] = BlockSubnetTopicFormat
+	// Specially handle Deneb objects.
+	GossipTypeMapping[reflect.TypeOf(&ethpb.SignedBeaconBlockDeneb{})] = BlockSubnetTopicFormat
 }

beacon-chain/p2p/interfaces.go

@@ -35,6 +35,7 @@ type Broadcaster interface {
 	Broadcast(context.Context, proto.Message) error
 	BroadcastAttestation(ctx context.Context, subnet uint64, att *ethpb.Attestation) error
 	BroadcastSyncCommitteeMessage(ctx context.Context, subnet uint64, sMsg *ethpb.SyncCommitteeMessage) error
+	BroadcastBlob(ctx context.Context, subnet uint64, blob *ethpb.SignedBlobSidecar) error
 }
 
 // SetStreamHandler configures p2p to handle streams of a certain topic ID.

beacon-chain/p2p/monitoring.go

@@ -60,10 +60,18 @@ var (
 			"the subnet. The beacon node increments this counter when the broadcast is blocked " +
 			"until a subnet peer can be found.",
 	})
+	blobSidecarCommitteeBroadcasts = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "p2p_blob_sidecar_committee_broadcasts",
+		Help: "The number of blob sidecar committee messages that were broadcast with no peer on.",
+	})
 	syncCommitteeBroadcastAttempts = promauto.NewCounter(prometheus.CounterOpts{
 		Name: "p2p_sync_committee_subnet_attempted_broadcasts",
 		Help: "The number of sync committee that were attempted to be broadcast.",
 	})
+	blobSidecarCommitteeBroadcastAttempts = promauto.NewCounter(prometheus.CounterOpts{
+		Name: "p2p_blob_sidecar_committee_attempted_broadcasts",
+		Help: "The number of blob sidecar committee messages that were attempted to be broadcast.",
+	})
 
 	// Gossip Tracer Metrics
 	pubsubTopicsActive = promauto.NewGaugeVec(prometheus.GaugeOpts{

beacon-chain/p2p/peers/peers_test.go

@@ -22,6 +22,8 @@ func TestMain(m *testing.M) {
 	flags.Init(&flags.GlobalFlags{
 		BlockBatchLimit:            64,
 		BlockBatchLimitBurstFactor: 10,
+		BlobBatchLimit:             8,
+		BlobBatchLimitBurstFactor:  2,
 	})
 	defer func() {
 		flags.Init(resetFlags)

beacon-chain/p2p/pubsub_filter.go

@@ -57,12 +57,17 @@ func (s *Service) CanSubscribe(topic string) bool {
 		log.WithError(err).Error("Could not determine Capella fork digest")
 		return false
 	}
-
+	denebForkDigest, err := forks.ForkDigestFromEpoch(params.BeaconConfig().DenebForkEpoch, s.genesisValidatorsRoot)
+	if err != nil {
+		log.WithError(err).Error("Could not determine Deneb fork digest")
+		return false
+	}
 	switch parts[2] {
 	case fmt.Sprintf("%x", phase0ForkDigest):
 	case fmt.Sprintf("%x", altairForkDigest):
 	case fmt.Sprintf("%x", bellatrixForkDigest):
 	case fmt.Sprintf("%x", capellaForkDigest):
+	case fmt.Sprintf("%x", denebForkDigest):
 	default:
 		return false
 	}

beacon-chain/p2p/pubsub_filter_test.go

@@ -90,7 +90,7 @@ func TestService_CanSubscribe(t *testing.T) {
 		formatting := []interface{}{digest}
 
 		// Special case for attestation subnets which have a second formatting placeholder.
-		if topic == AttestationSubnetTopicFormat || topic == SyncCommitteeSubnetTopicFormat {
+		if topic == AttestationSubnetTopicFormat || topic == SyncCommitteeSubnetTopicFormat || topic == BlobSubnetTopicFormat {
 			formatting = append(formatting, 0 /* some subnet ID */)
 		}
 

beacon-chain/p2p/rpc_topic_mappings.go

@@ -37,6 +37,12 @@ const PingMessageName = "/ping"
 // MetadataMessageName specifies the name for the metadata message topic.
 const MetadataMessageName = "/metadata"
 
+// BlobSidecarsByRangeName is the name for the BlobSidecarsByRange v1 message topic.
+const BlobSidecarsByRangeName = "/blob_sidecars_by_range"
+
+// BlobSidecarsByRootName is the name for the BlobSidecarsByRoot v1 message topic.
+const BlobSidecarsByRootName = "/blob_sidecars_by_root"
+
 const (
 	// V1 RPC Topics
 	// RPCStatusTopicV1 defines the v1 topic for the status rpc method.
@@ -52,6 +58,14 @@ const (
 	// RPCMetaDataTopicV1 defines the v1 topic for the metadata rpc method.
 	RPCMetaDataTopicV1 = protocolPrefix + MetadataMessageName + SchemaVersionV1
 
+	// RPCBlobSidecarsByRangeTopicV1 is a topic for requesting blob sidecars
+	// in the slot range [start_slot, start_slot + count), leading up to the current head block as selected by fork choice.
+	// Protocol ID: /eth2/beacon_chain/req/blob_sidecars_by_range/1/ - New in deneb.
+	RPCBlobSidecarsByRangeTopicV1 = protocolPrefix + BlobSidecarsByRangeName + SchemaVersionV1
+	// RPCBlobSidecarsByRootTopicV1 is a topic for requesting blob sidecars by their block root. New in deneb.
+	// /eth2/beacon_chain/req/blob_sidecars_by_root/1/
+	RPCBlobSidecarsByRootTopicV1 = protocolPrefix + BlobSidecarsByRootName + SchemaVersionV1
+
 	// V2 RPC Topics
 	// RPCBlocksByRangeTopicV2 defines v2 the topic for the blocks by range rpc method.
 	RPCBlocksByRangeTopicV2 = protocolPrefix + BeaconBlocksByRangeMessageName + SchemaVersionV2
@@ -83,6 +97,10 @@ var RPCTopicMappings = map[string]interface{}{
 	// RPC Metadata Message
 	RPCMetaDataTopicV1: new(interface{}),
 	RPCMetaDataTopicV2: new(interface{}),
+	// BlobSidecarsByRange v1 Message
+	RPCBlobSidecarsByRangeTopicV1: new(pb.BlobSidecarsByRangeRequest),
+	// BlobSidecarsByRoot v1 Message
+	RPCBlobSidecarsByRootTopicV1: new(p2ptypes.BlobSidecarsByRootReq),
 }
 
 // Maps all registered protocol prefixes.
@@ -99,6 +117,8 @@ var messageMapping = map[string]bool{
 	BeaconBlocksByRootsMessageName: true,
 	PingMessageName:                true,
 	MetadataMessageName:            true,
+	BlobSidecarsByRangeName:        true,
+	BlobSidecarsByRootName:         true,
 }
 
 // Maps all the RPC messages which are to updated in altair.
@@ -113,6 +133,19 @@ var versionMapping = map[string]bool{
 	SchemaVersionV2: true,
 }
 
+// OmitContextBytesV1 keeps track of which RPC methods do not write context bytes in their v1 incarnations.
+// Phase0 did not have the notion of context bytes, which prefix wire-encoded values with a [4]byte identifier
+// to convey the schema for the receiver to use. These RPCs had a version bump to V2 when the context byte encoding
+// was introduced. For other RPC methods, context bytes are always required.
+var OmitContextBytesV1 = map[string]bool{
+	StatusMessageName:              true,
+	GoodbyeMessageName:             true,
+	BeaconBlocksByRangeMessageName: true,
+	BeaconBlocksByRootsMessageName: true,
+	PingMessageName:                true,
+	MetadataMessageName:            true,
+}
+
 // VerifyTopicMapping verifies that the topic and its accompanying
 // message type is correct.
 func VerifyTopicMapping(topic string, msg interface{}) error {

beacon-chain/p2p/subnets.go

@@ -31,6 +31,13 @@ var syncCommsSubnetEnrKey = params.BeaconNetworkConfig().SyncCommsSubnetKey
 // chosen as more than 64(attestation subnet count).
 const syncLockerVal = 100
 
+// The value used with the blob sidecar subnet, in order
+// to create an appropriate key to retrieve
+// the relevant lock. This is used to differentiate
+// blob subnets from others. This is deliberately
+// chosen more than sync and attestation subnet combined.
+const blobSubnetLockerVal = 110
+
 // FindPeersWithSubnet performs a network search for peers
 // subscribed to a particular subnet. Then we try to connect
 // with those peers. This method will block until the required amount of

beacon-chain/p2p/testing/fuzz_p2p.go

@@ -143,6 +143,11 @@ func (_ *FakeP2P) BroadcastSyncCommitteeMessage(_ context.Context, _ uint64, _ *
 	return nil
 }
 
+// BroadcastBlob -- fake.
+func (_ *FakeP2P) BroadcastBlob(_ context.Context, _ uint64, _ *ethpb.SignedBlobSidecar) error {
+	return nil
+}
+
 // InterceptPeerDial -- fake.
 func (_ *FakeP2P) InterceptPeerDial(peer.ID) (allow bool) {
 	return true

beacon-chain/p2p/testing/mock_broadcaster.go

@@ -33,3 +33,9 @@ func (m *MockBroadcaster) BroadcastSyncCommitteeMessage(_ context.Context, _ uin
 	m.BroadcastCalled = true
 	return nil
 }
+
+// BroadcastBlob broadcasts a blob for mock.
+func (m *MockBroadcaster) BroadcastBlob(context.Context, uint64, *ethpb.SignedBlobSidecar) error {
+	m.BroadcastCalled = true
+	return nil
+}

beacon-chain/p2p/testing/p2p.go

@@ -176,6 +176,12 @@ func (p *TestP2P) BroadcastSyncCommitteeMessage(_ context.Context, _ uint64, _ *
 	return nil
 }
 
+// BroadcastBlob broadcasts a blob for mock.
+func (p *TestP2P) BroadcastBlob(context.Context, uint64, *ethpb.SignedBlobSidecar) error {
+	p.BroadcastCalled = true
+	return nil
+}
+
 // SetStreamHandler for RPC.
 func (p *TestP2P) SetStreamHandler(topic string, handler network.StreamHandler) {
 	p.BHost.SetStreamHandler(protocol.ID(topic), handler)

beacon-chain/p2p/topics.go

@@ -28,7 +28,8 @@ const (
 	GossipContributionAndProofMessage = "sync_committee_contribution_and_proof"
 	// GossipBlsToExecutionChangeMessage is the name for the bls to execution change message type.
 	GossipBlsToExecutionChangeMessage = "bls_to_execution_change"
-
+	// GossipBlobSidecarMessage is the name for the blob sidecar message type.
+	GossipBlobSidecarMessage = "blob_sidecar"
 	// Topic Formats
 	//
 	// AttestationSubnetTopicFormat is the topic format for the attestation subnet.
@@ -49,4 +50,6 @@ const (
 	SyncContributionAndProofSubnetTopicFormat = GossipProtocolAndDigest + GossipContributionAndProofMessage
 	// BlsToExecutionChangeSubnetTopicFormat is the topic format for the bls to execution change subnet.
 	BlsToExecutionChangeSubnetTopicFormat = GossipProtocolAndDigest + GossipBlsToExecutionChangeMessage
+	// BlobSubnetTopicFormat is the topic format for the blob subnet.
+	BlobSubnetTopicFormat = GossipProtocolAndDigest + GossipBlobSidecarMessage + "_%d"
 )

beacon-chain/p2p/types/BUILD.bazel

@@ -41,7 +41,9 @@ go_test(
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
         "//encoding/bytesutil:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
         "//testing/assert:go_default_library",
         "//testing/require:go_default_library",
+        "@com_github_prysmaticlabs_fastssz//:go_default_library",
     ],
 )

beacon-chain/p2p/types/rpc_errors.go

@@ -12,4 +12,6 @@ var (
 	ErrRateLimited            = errors.New("rate limited")
 	ErrIODeadline             = errors.New("i/o deadline exceeded")
 	ErrInvalidRequest         = errors.New("invalid range, step or count")
+	ErrBlobLTMinRequest       = errors.New("blob slot < minimum_request_epoch")
+	ErrMaxBlobReqExceeded     = errors.New("requested more than MAX_REQUEST_BLOB_SIDECARS")
 )

beacon-chain/p2p/types/types.go

@@ -4,9 +4,13 @@
 package types
 
 import (
+	"bytes"
+	"sort"
+
 	"github.com/pkg/errors"
 	ssz "github.com/prysmaticlabs/fastssz"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
+	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 )
 
 const rootLength = 32
@@ -64,7 +68,7 @@ func (r *BeaconBlockByRootsReq) UnmarshalSSZ(buf []byte) error {
 	bufLen := len(buf)
 	maxLength := int(params.BeaconNetworkConfig().MaxRequestBlocks * rootLength)
 	if bufLen > maxLength {
-		return errors.Errorf("expected buffer with length of upto %d but received length %d", maxLength, bufLen)
+		return errors.Errorf("expected buffer with length of up to %d but received length %d", maxLength, bufLen)
 	}
 	if bufLen%rootLength != 0 {
 		return ssz.ErrIncorrectByteSize
@@ -120,3 +124,90 @@ func (m *ErrorMessage) UnmarshalSSZ(buf []byte) error {
 	*m = errMsg
 	return nil
 }
+
+// BlobSidecarsByRootReq is used to specify a list of blob targets (root+index) in a BlobSidecarsByRoot RPC request.
+type BlobSidecarsByRootReq []*eth.BlobIdentifier
+
+// BlobIdentifier is a fixed size value, so we can compute its fixed size at start time (see init below)
+var blobIdSize int
+
+// SizeSSZ returns the size of the serialized representation.
+func (b *BlobSidecarsByRootReq) SizeSSZ() int {
+	return len(*b) * blobIdSize
+}
+
+// MarshalSSZTo appends the serialized BlobSidecarsByRootReq value to the provided byte slice.
+func (b *BlobSidecarsByRootReq) MarshalSSZTo(dst []byte) ([]byte, error) {
+	// A List without an enclosing container is marshaled exactly like a vector, no length offset required.
+	marshalledObj, err := b.MarshalSSZ()
+	if err != nil {
+		return nil, err
+	}
+	return append(dst, marshalledObj...), nil
+}
+
+// MarshalSSZ serializes the BlobSidecarsByRootReq value to a byte slice.
+func (b *BlobSidecarsByRootReq) MarshalSSZ() ([]byte, error) {
+	buf := make([]byte, len(*b)*blobIdSize)
+	for i, id := range *b {
+		by, err := id.MarshalSSZ()
+		if err != nil {
+			return nil, err
+		}
+		copy(buf[i*blobIdSize:(i+1)*blobIdSize], by)
+	}
+	return buf, nil
+}
+
+// UnmarshalSSZ unmarshals the provided bytes buffer into the
+// BlobSidecarsByRootReq value.
+func (b *BlobSidecarsByRootReq) UnmarshalSSZ(buf []byte) error {
+	bufLen := len(buf)
+	maxLength := int(params.BeaconNetworkConfig().MaxRequestBlobSidecars) * blobIdSize
+	if bufLen > maxLength {
+		return errors.Errorf("expected buffer with length of up to %d but received length %d", maxLength, bufLen)
+	}
+	if bufLen%blobIdSize != 0 {
+		return errors.Wrapf(ssz.ErrIncorrectByteSize, "size=%d", bufLen)
+	}
+	count := bufLen / blobIdSize
+	*b = make([]*eth.BlobIdentifier, count)
+	for i := 0; i < count; i++ {
+		id := &eth.BlobIdentifier{}
+		err := id.UnmarshalSSZ(buf[i*blobIdSize : (i+1)*blobIdSize])
+		if err != nil {
+			return err
+		}
+		(*b)[i] = id
+	}
+	return nil
+}
+
+var _ sort.Interface = BlobSidecarsByRootReq{}
+
+// Less reports whether the element with index i must sort before the element with index j.
+// BlobIdentifier will be sorted in lexicographic order by root, with Blob Index as tiebreaker for a given root.
+func (s BlobSidecarsByRootReq) Less(i, j int) bool {
+	rootCmp := bytes.Compare(s[i].BlockRoot, s[j].BlockRoot)
+	if rootCmp != 0 {
+		// They aren't equal; return true if i < j, false if i > j.
+		return rootCmp < 0
+	}
+	// They are equal; blob index is the tie breaker.
+	return s[i].Index < s[j].Index
+}
+
+// Swap swaps the elements with indexes i and j.
+func (s BlobSidecarsByRootReq) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+// Len is the number of elements in the collection.
+func (s BlobSidecarsByRootReq) Len() int {
+	return len(s)
+}
+
+func init() {
+	sizer := &eth.BlobIdentifier{}
+	blobIdSize = sizer.SizeSSZ()
+}

beacon-chain/p2p/types/types_test.go

@@ -4,12 +4,82 @@ import (
 	"encoding/hex"
 	"testing"
 
+	ssz "github.com/prysmaticlabs/fastssz"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v4/testing/assert"
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
 )
 
+func generateBlobIdentifiers(n int) []*eth.BlobIdentifier {
+	r := make([]*eth.BlobIdentifier, n)
+	for i := 0; i < n; i++ {
+		r[i] = &eth.BlobIdentifier{
+			BlockRoot: bytesutil.PadTo([]byte{byte(i)}, 32),
+			Index:     0,
+		}
+	}
+	return r
+}
+
+func TestBlobSidecarsByRootReq_MarshalSSZ(t *testing.T) {
+	cases := []struct {
+		name         string
+		ids          []*eth.BlobIdentifier
+		marshalErr   error
+		unmarshalErr error
+		unmarshalMod func([]byte) []byte
+	}{
+		{
+			name: "empty list",
+		},
+		{
+			name: "single item list",
+			ids:  generateBlobIdentifiers(1),
+		},
+		{
+			name: "10 item list",
+			ids:  generateBlobIdentifiers(10),
+		},
+		{
+			name: "wonky unmarshal size",
+			ids:  generateBlobIdentifiers(10),
+			unmarshalMod: func(in []byte) []byte {
+				in = append(in, byte(0))
+				return in
+			},
+			unmarshalErr: ssz.ErrIncorrectByteSize,
+		},
+	}
+
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			r := BlobSidecarsByRootReq(c.ids)
+			by, err := r.MarshalSSZ()
+			if c.marshalErr != nil {
+				require.ErrorIs(t, err, c.marshalErr)
+				return
+			}
+			require.NoError(t, err)
+			if c.unmarshalMod != nil {
+				by = c.unmarshalMod(by)
+			}
+			got := &BlobSidecarsByRootReq{}
+			err = got.UnmarshalSSZ(by)
+			if c.unmarshalErr != nil {
+				require.ErrorIs(t, err, c.unmarshalErr)
+				return
+			}
+			require.NoError(t, err)
+			for i, gid := range *got {
+				require.DeepEqual(t, c.ids[i], gid)
+			}
+		})
+	}
+}
+
 func TestBeaconBlockByRootsReq_Limit(t *testing.T) {
 	fixedRoots := make([][32]byte, 0)
 	for i := uint64(0); i < params.BeaconNetworkConfig().MaxRequestBlocks+100; i++ {
@@ -25,7 +95,7 @@ func TestBeaconBlockByRootsReq_Limit(t *testing.T) {
 		buf = append(buf, rt[:]...)
 	}
 	req2 := BeaconBlockByRootsReq(nil)
-	require.ErrorContains(t, "expected buffer with length of upto", req2.UnmarshalSSZ(buf))
+	require.ErrorContains(t, "expected buffer with length of up to", req2.UnmarshalSSZ(buf))
 }
 
 func TestErrorResponse_Limit(t *testing.T) {

beacon-chain/rpc/BUILD.bazel

@@ -25,6 +25,7 @@ go_library(
         "//beacon-chain/operations/voluntaryexits:go_default_library",
         "//beacon-chain/p2p:go_default_library",
         "//beacon-chain/rpc/eth/beacon:go_default_library",
+        "//beacon-chain/rpc/eth/blob:go_default_library",
         "//beacon-chain/rpc/eth/builder:go_default_library",
         "//beacon-chain/rpc/eth/debug:go_default_library",
         "//beacon-chain/rpc/eth/events:go_default_library",

beacon-chain/rpc/apimiddleware/BUILD.bazel

@@ -18,6 +18,7 @@ go_library(
         "//beacon-chain/rpc/eth/helpers:go_default_library",
         "//config/params:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//network:go_default_library",
         "//proto/eth/v2:go_default_library",
         "//runtime/version:go_default_library",
         "//time/slots:go_default_library",

beacon-chain/rpc/apimiddleware/custom_handlers.go

@@ -8,13 +8,13 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"regexp"
 	"strconv"
 	"strings"
 
 	"github.com/prysmaticlabs/prysm/v4/api/gateway/apimiddleware"
 	"github.com/prysmaticlabs/prysm/v4/api/grpc"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/events"
+	"github.com/prysmaticlabs/prysm/v4/network"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/r3labs/sse"
 )
@@ -26,9 +26,6 @@ const (
 	octetStreamMediaType = "application/octet-stream"
 )
 
-// match a number with optional decimals
-var priorityRegex = regexp.MustCompile(`q=(\d+(?:\.\d+)?)`)
-
 type sszConfig struct {
 	fileName     string
 	responseJson SszResponse
@@ -120,7 +117,7 @@ func handleGetSSZ(
 	req *http.Request,
 	config sszConfig,
 ) (handled bool) {
-	ssz, err := sszRequested(req)
+	ssz, err := network.SszRequested(req)
 	if err != nil {
 		apimiddleware.WriteError(w, apimiddleware.InternalServerError(err), nil)
 		return true
@@ -213,44 +210,6 @@ func handlePostSSZ(m *apimiddleware.ApiProxyMiddleware, endpoint apimiddleware.E
 	return true
 }
 
-func sszRequested(req *http.Request) (bool, error) {
-	accept := req.Header.Values("Accept")
-	if len(accept) == 0 {
-		return false, nil
-	}
-	types := strings.Split(accept[0], ",")
-	currentType, currentPriority := "", 0.0
-	for _, t := range types {
-		values := strings.Split(t, ";")
-		name := values[0]
-		if name != jsonMediaType && name != octetStreamMediaType {
-			continue
-		}
-		// no params specified
-		if len(values) == 1 {
-			priority := 1.0
-			if priority > currentPriority {
-				currentType, currentPriority = name, priority
-			}
-			continue
-		}
-		params := values[1]
-		match := priorityRegex.FindAllStringSubmatch(params, 1)
-		if len(match) != 1 {
-			continue
-		}
-		priority, err := strconv.ParseFloat(match[0][1], 32)
-		if err != nil {
-			return false, err
-		}
-		if priority > currentPriority {
-			currentType, currentPriority = name, priority
-		}
-	}
-
-	return currentType == octetStreamMediaType, nil
-}
-
 func sszPosted(req *http.Request) bool {
 	ct, ok := req.Header["Content-Type"]
 	if !ok {

beacon-chain/rpc/apimiddleware/custom_handlers_test.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
-	"fmt"
 	"net/http"
 	"net/http/httptest"
 	"strings"
@@ -42,95 +41,6 @@ func (t testSSZResponseJson) SSZFinalized() bool {
 	return t.Finalized
 }
 
-func TestSSZRequested(t *testing.T) {
-	t.Run("ssz_requested", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{octetStreamMediaType}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, true, result)
-	})
-
-	t.Run("ssz_content_type_first", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s", octetStreamMediaType, jsonMediaType)}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, true, result)
-	})
-
-	t.Run("ssz_content_type_preferred_1", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.9,%s", jsonMediaType, octetStreamMediaType)}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, true, result)
-	})
-
-	t.Run("ssz_content_type_preferred_2", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s;q=0.95,%s;q=0.9", octetStreamMediaType, jsonMediaType)}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, true, result)
-	})
-
-	t.Run("other_content_type_preferred", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9", jsonMediaType, octetStreamMediaType)}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("other_params", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{fmt.Sprintf("%s,%s;q=0.9,otherparam=xyz", jsonMediaType, octetStreamMediaType)}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("no_header", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("empty_header", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("empty_header_value", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{""}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("other_content_type", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{"application/other"}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-
-	t.Run("garbage", func(t *testing.T) {
-		request := httptest.NewRequest("GET", "http://foo.example", nil)
-		request.Header["Accept"] = []string{"This is Sparta!!!"}
-		result, err := sszRequested(request)
-		require.NoError(t, err)
-		assert.Equal(t, false, result)
-	})
-}
-
 func TestPrepareSSZRequestForProxying(t *testing.T) {
 	middleware := &apimiddleware.ApiProxyMiddleware{
 		GatewayAddress: "http://apimiddleware.example",

beacon-chain/rpc/apimiddleware/custom_hooks.go

@@ -241,33 +241,35 @@ func wrapSignedContributionAndProofsArray(
 }
 
 type phase0PublishBlockRequestJson struct {
-	Phase0Block *BeaconBlockJson `json:"phase0_block"`
-	Signature   string           `json:"signature" hex:"true"`
+	Phase0Block *SignedBeaconBlockJson `json:"phase0_block"`
 }
 
 type altairPublishBlockRequestJson struct {
-	AltairBlock *BeaconBlockAltairJson `json:"altair_block"`
-	Signature   string                 `json:"signature" hex:"true"`
+	AltairBlock *SignedBeaconBlockAltairJson `json:"altair_block"`
 }
 
 type bellatrixPublishBlockRequestJson struct {
-	BellatrixBlock *BeaconBlockBellatrixJson `json:"bellatrix_block"`
-	Signature      string                    `json:"signature" hex:"true"`
-}
-
-type capellaPublishBlockRequestJson struct {
-	CapellaBlock *BeaconBlockCapellaJson `json:"capella_block"`
-	Signature    string                  `json:"signature" hex:"true"`
+	BellatrixBlock *SignedBeaconBlockBellatrixJson `json:"bellatrix_block"`
 }
 
 type bellatrixPublishBlindedBlockRequestJson struct {
-	BellatrixBlock *BlindedBeaconBlockBellatrixJson `json:"bellatrix_block"`
-	Signature      string                           `json:"signature" hex:"true"`
+	BellatrixBlock *SignedBlindedBeaconBlockBellatrixJson `json:"bellatrix_block"`
+}
+
+type capellaPublishBlockRequestJson struct {
+	CapellaBlock *SignedBeaconBlockCapellaJson `json:"capella_block"`
 }
 
 type capellaPublishBlindedBlockRequestJson struct {
-	CapellaBlock *BlindedBeaconBlockCapellaJson `json:"capella_block"`
-	Signature    string                         `json:"signature" hex:"true"`
+	CapellaBlock *SignedBlindedBeaconBlockCapellaJson `json:"capella_block"`
+}
+
+type denebPublishBlockRequestJson struct {
+	DenebContents *SignedBeaconBlockContentsDenebJson `json:"deneb_contents"`
+}
+
+type denebPublishBlindedBlockRequestJson struct {
+	DenebContents *SignedBlindedBeaconBlockContentsDenebJson `json:"deneb_contents"`
 }
 
 // setInitialPublishBlockPostRequest is triggered before we deserialize the request JSON into a struct.
@@ -280,31 +282,50 @@ func setInitialPublishBlockPostRequest(endpoint *apimiddleware.Endpoint,
 	req *http.Request,
 ) (apimiddleware.RunDefault, apimiddleware.ErrorJson) {
 	s := struct {
-		Message struct {
-			Slot string
-		}
+		Slot string
 	}{}
 
 	buf, err := io.ReadAll(req.Body)
 	if err != nil {
 		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not read body")
 	}
-	if err := json.Unmarshal(buf, &s); err != nil {
-		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not read slot from body")
+
+	typeParseMap := make(map[string]json.RawMessage)
+	if err := json.Unmarshal(buf, &typeParseMap); err != nil {
+		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not parse object")
 	}
-	slot, err := strconv.ParseUint(s.Message.Slot, 10, 64)
+	if val, ok := typeParseMap["message"]; ok {
+		if err := json.Unmarshal(val, &s); err != nil {
+			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not unmarshal field 'message' ")
+		}
+	} else if val, ok := typeParseMap["signed_block"]; ok {
+		temp := struct {
+			Message struct {
+				Slot string
+			}
+		}{}
+		if err := json.Unmarshal(val, &temp); err != nil {
+			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not unmarshal field 'signed_block' ")
+		}
+		s.Slot = temp.Message.Slot
+	} else {
+		return false, &apimiddleware.DefaultErrorJson{Message: "could not parse slot from request", Code: http.StatusInternalServerError}
+	}
+	slot, err := strconv.ParseUint(s.Slot, 10, 64)
 	if err != nil {
 		return false, apimiddleware.InternalServerErrorWithMessage(err, "slot is not an unsigned integer")
 	}
 	currentEpoch := slots.ToEpoch(primitives.Slot(slot))
 	if currentEpoch < params.BeaconConfig().AltairForkEpoch {
-		endpoint.PostRequest = &SignedBeaconBlockContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockJson{}
 	} else if currentEpoch < params.BeaconConfig().BellatrixForkEpoch {
-		endpoint.PostRequest = &SignedBeaconBlockAltairContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockAltairJson{}
 	} else if currentEpoch < params.BeaconConfig().CapellaForkEpoch {
-		endpoint.PostRequest = &SignedBeaconBlockBellatrixContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockBellatrixJson{}
+	} else if currentEpoch < params.BeaconConfig().DenebForkEpoch {
+		endpoint.PostRequest = &SignedBeaconBlockCapellaJson{}
 	} else {
-		endpoint.PostRequest = &SignedBeaconBlockCapellaContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockContentsDenebJson{}
 	}
 	req.Body = io.NopCloser(bytes.NewBuffer(buf))
 	return true, nil
@@ -315,38 +336,42 @@ func setInitialPublishBlockPostRequest(endpoint *apimiddleware.Endpoint,
 // We do a simple conversion depending on the type of endpoint.PostRequest
 // (which was filled out previously in setInitialPublishBlockPostRequest).
 func preparePublishedBlock(endpoint *apimiddleware.Endpoint, _ http.ResponseWriter, _ *http.Request) apimiddleware.ErrorJson {
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &phase0PublishBlockRequestJson{
-			Phase0Block: block.Message,
-			Signature:   block.Signature,
+			Phase0Block: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockAltairContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockAltairJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &altairPublishBlockRequestJson{
-			AltairBlock: block.Message,
-			Signature:   block.Signature,
+			AltairBlock: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockBellatrixContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockBellatrixJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &bellatrixPublishBlockRequestJson{
-			BellatrixBlock: block.Message,
-			Signature:      block.Signature,
+			BellatrixBlock: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockCapellaContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockCapellaJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &capellaPublishBlockRequestJson{
-			CapellaBlock: block.Message,
-			Signature:    block.Signature,
+			CapellaBlock: block,
+		}
+		endpoint.PostRequest = actualPostReq
+		return nil
+	}
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockContentsDenebJson); ok {
+		// Prepare post request that can be properly decoded on gRPC side.
+		actualPostReq := &denebPublishBlockRequestJson{
+			DenebContents: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
@@ -364,31 +389,50 @@ func setInitialPublishBlindedBlockPostRequest(endpoint *apimiddleware.Endpoint,
 	req *http.Request,
 ) (apimiddleware.RunDefault, apimiddleware.ErrorJson) {
 	s := struct {
-		Message struct {
-			Slot string
-		}
+		Slot string
 	}{}
 
 	buf, err := io.ReadAll(req.Body)
 	if err != nil {
 		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not read body")
 	}
-	if err := json.Unmarshal(buf, &s); err != nil {
-		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not read slot from body")
+
+	typeParseMap := make(map[string]json.RawMessage)
+	if err = json.Unmarshal(buf, &typeParseMap); err != nil {
+		return false, apimiddleware.InternalServerErrorWithMessage(err, "could not parse object")
 	}
-	slot, err := strconv.ParseUint(s.Message.Slot, 10, 64)
+	if val, ok := typeParseMap["message"]; ok {
+		if err = json.Unmarshal(val, &s); err != nil {
+			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not unmarshal field 'message' ")
+		}
+	} else if val, ok = typeParseMap["signed_blinded_block"]; ok {
+		temp := struct {
+			Message struct {
+				Slot string
+			}
+		}{}
+		if err = json.Unmarshal(val, &temp); err != nil {
+			return false, apimiddleware.InternalServerErrorWithMessage(err, "could not unmarshal field 'signed_block' ")
+		}
+		s.Slot = temp.Message.Slot
+	} else {
+		return false, &apimiddleware.DefaultErrorJson{Message: "could not parse slot from request", Code: http.StatusInternalServerError}
+	}
+	slot, err := strconv.ParseUint(s.Slot, 10, 64)
 	if err != nil {
 		return false, apimiddleware.InternalServerErrorWithMessage(err, "slot is not an unsigned integer")
 	}
 	currentEpoch := slots.ToEpoch(primitives.Slot(slot))
 	if currentEpoch < params.BeaconConfig().AltairForkEpoch {
-		endpoint.PostRequest = &SignedBeaconBlockContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockJson{}
 	} else if currentEpoch < params.BeaconConfig().BellatrixForkEpoch {
-		endpoint.PostRequest = &SignedBeaconBlockAltairContainerJson{}
+		endpoint.PostRequest = &SignedBeaconBlockAltairJson{}
 	} else if currentEpoch < params.BeaconConfig().CapellaForkEpoch {
-		endpoint.PostRequest = &SignedBlindedBeaconBlockBellatrixContainerJson{}
+		endpoint.PostRequest = &SignedBlindedBeaconBlockBellatrixJson{}
+	} else if currentEpoch < params.BeaconConfig().DenebForkEpoch {
+		endpoint.PostRequest = &SignedBlindedBeaconBlockCapellaJson{}
 	} else {
-		endpoint.PostRequest = &SignedBlindedBeaconBlockCapellaContainerJson{}
+		endpoint.PostRequest = &SignedBlindedBeaconBlockContentsDenebJson{}
 	}
 	req.Body = io.NopCloser(bytes.NewBuffer(buf))
 	return true, nil
@@ -399,38 +443,51 @@ func setInitialPublishBlindedBlockPostRequest(endpoint *apimiddleware.Endpoint,
 // We do a simple conversion depending on the type of endpoint.PostRequest
 // (which was filled out previously in setInitialPublishBlockPostRequest).
 func preparePublishedBlindedBlock(endpoint *apimiddleware.Endpoint, _ http.ResponseWriter, _ *http.Request) apimiddleware.ErrorJson {
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &phase0PublishBlockRequestJson{
-			Phase0Block: block.Message,
-			Signature:   block.Signature,
+			Phase0Block: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockAltairContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBeaconBlockAltairJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &altairPublishBlockRequestJson{
-			AltairBlock: block.Message,
-			Signature:   block.Signature,
+			AltairBlock: block,
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBlindedBeaconBlockBellatrixContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBlindedBeaconBlockBellatrixJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &bellatrixPublishBlindedBlockRequestJson{
-			BellatrixBlock: block.Message,
-			Signature:      block.Signature,
+			BellatrixBlock: &SignedBlindedBeaconBlockBellatrixJson{
+				Message:   block.Message,
+				Signature: block.Signature,
+			},
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
 	}
-	if block, ok := endpoint.PostRequest.(*SignedBlindedBeaconBlockCapellaContainerJson); ok {
+	if block, ok := endpoint.PostRequest.(*SignedBlindedBeaconBlockCapellaJson); ok {
 		// Prepare post request that can be properly decoded on gRPC side.
 		actualPostReq := &capellaPublishBlindedBlockRequestJson{
-			CapellaBlock: block.Message,
-			Signature:    block.Signature,
+			CapellaBlock: &SignedBlindedBeaconBlockCapellaJson{
+				Message:   block.Message,
+				Signature: block.Signature,
+			},
+		}
+		endpoint.PostRequest = actualPostReq
+		return nil
+	}
+	if blockContents, ok := endpoint.PostRequest.(*SignedBlindedBeaconBlockContentsDenebJson); ok {
+		// Prepare post request that can be properly decoded on gRPC side.
+		actualPostReq := &denebPublishBlindedBlockRequestJson{
+			DenebContents: &SignedBlindedBeaconBlockContentsDenebJson{
+				SignedBlindedBlock:        blockContents.SignedBlindedBlock,
+				SignedBlindedBlobSidecars: blockContents.SignedBlindedBlobSidecars,
+			},
 		}
 		endpoint.PostRequest = actualPostReq
 		return nil
@@ -476,45 +533,59 @@ func prepareValidatorAggregates(body []byte, responseContainer interface{}) (api
 }
 
 type phase0BlockResponseJson struct {
+	Version             string                 `json:"version" enum:"true"`
+	Data                *SignedBeaconBlockJson `json:"data"`
+	ExecutionOptimistic bool                   `json:"execution_optimistic"`
+	Finalized           bool                   `json:"finalized"`
+}
+
+type altairBlockResponseJson struct {
+	Version             string                       `json:"version" enum:"true"`
+	Data                *SignedBeaconBlockAltairJson `json:"data"`
+	ExecutionOptimistic bool                         `json:"execution_optimistic"`
+	Finalized           bool                         `json:"finalized"`
+}
+
+type bellatrixBlockResponseJson struct {
 	Version             string                          `json:"version" enum:"true"`
-	Data                *SignedBeaconBlockContainerJson `json:"data"`
+	Data                *SignedBeaconBlockBellatrixJson `json:"data"`
 	ExecutionOptimistic bool                            `json:"execution_optimistic"`
 	Finalized           bool                            `json:"finalized"`
 }
 
-type altairBlockResponseJson struct {
-	Version             string                                `json:"version" enum:"true"`
-	Data                *SignedBeaconBlockAltairContainerJson `json:"data"`
-	ExecutionOptimistic bool                                  `json:"execution_optimistic"`
-	Finalized           bool                                  `json:"finalized"`
-}
-
-type bellatrixBlockResponseJson struct {
-	Version             string                                   `json:"version" enum:"true"`
-	Data                *SignedBeaconBlockBellatrixContainerJson `json:"data"`
-	ExecutionOptimistic bool                                     `json:"execution_optimistic"`
-	Finalized           bool                                     `json:"finalized"`
-}
-
 type capellaBlockResponseJson struct {
-	Version             string                                 `json:"version"`
-	Data                *SignedBeaconBlockCapellaContainerJson `json:"data"`
+	Version             string                        `json:"version"`
+	Data                *SignedBeaconBlockCapellaJson `json:"data"`
+	ExecutionOptimistic bool                          `json:"execution_optimistic"`
+	Finalized           bool                          `json:"finalized"`
+}
+
+type denebBlockResponseJson struct {
+	Version             string                      `json:"version"`
+	Data                *SignedBeaconBlockDenebJson `json:"data"`
+	ExecutionOptimistic bool                        `json:"execution_optimistic"`
+	Finalized           bool                        `json:"finalized"`
+}
+
+type bellatrixBlindedBlockResponseJson struct {
+	Version             string                                 `json:"version" enum:"true"`
+	Data                *SignedBlindedBeaconBlockBellatrixJson `json:"data"`
 	ExecutionOptimistic bool                                   `json:"execution_optimistic"`
 	Finalized           bool                                   `json:"finalized"`
 }
 
-type bellatrixBlindedBlockResponseJson struct {
-	Version             string                                          `json:"version" enum:"true"`
-	Data                *SignedBlindedBeaconBlockBellatrixContainerJson `json:"data"`
-	ExecutionOptimistic bool                                            `json:"execution_optimistic"`
-	Finalized           bool                                            `json:"finalized"`
+type capellaBlindedBlockResponseJson struct {
+	Version             string                               `json:"version" enum:"true"`
+	Data                *SignedBlindedBeaconBlockCapellaJson `json:"data"`
+	ExecutionOptimistic bool                                 `json:"execution_optimistic"`
+	Finalized           bool                                 `json:"finalized"`
 }
 
-type capellaBlindedBlockResponseJson struct {
-	Version             string                                        `json:"version" enum:"true"`
-	Data                *SignedBlindedBeaconBlockCapellaContainerJson `json:"data"`
-	ExecutionOptimistic bool                                          `json:"execution_optimistic"`
-	Finalized           bool                                          `json:"finalized"`
+type denebBlindedBlockResponseJson struct {
+	Version             string                             `json:"version"`
+	Data                *SignedBlindedBeaconBlockDenebJson `json:"data"`
+	ExecutionOptimistic bool                               `json:"execution_optimistic"`
+	Finalized           bool                               `json:"finalized"`
 }
 
 func serializeV2Block(response interface{}) (apimiddleware.RunDefault, []byte, apimiddleware.ErrorJson) {
@@ -528,7 +599,7 @@ func serializeV2Block(response interface{}) (apimiddleware.RunDefault, []byte, a
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_PHASE0.String())):
 		actualRespContainer = &phase0BlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockContainerJson{
+			Data: &SignedBeaconBlockJson{
 				Message:   respContainer.Data.Phase0Block,
 				Signature: respContainer.Data.Signature,
 			},
@@ -538,7 +609,7 @@ func serializeV2Block(response interface{}) (apimiddleware.RunDefault, []byte, a
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_ALTAIR.String())):
 		actualRespContainer = &altairBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockAltairContainerJson{
+			Data: &SignedBeaconBlockAltairJson{
 				Message:   respContainer.Data.AltairBlock,
 				Signature: respContainer.Data.Signature,
 			},
@@ -548,7 +619,7 @@ func serializeV2Block(response interface{}) (apimiddleware.RunDefault, []byte, a
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_BELLATRIX.String())):
 		actualRespContainer = &bellatrixBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockBellatrixContainerJson{
+			Data: &SignedBeaconBlockBellatrixJson{
 				Message:   respContainer.Data.BellatrixBlock,
 				Signature: respContainer.Data.Signature,
 			},
@@ -558,13 +629,23 @@ func serializeV2Block(response interface{}) (apimiddleware.RunDefault, []byte, a
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_CAPELLA.String())):
 		actualRespContainer = &capellaBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockCapellaContainerJson{
+			Data: &SignedBeaconBlockCapellaJson{
 				Message:   respContainer.Data.CapellaBlock,
 				Signature: respContainer.Data.Signature,
 			},
 			ExecutionOptimistic: respContainer.ExecutionOptimistic,
 			Finalized:           respContainer.Finalized,
 		}
+	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_DENEB.String())):
+		actualRespContainer = &denebBlockResponseJson{
+			Version: respContainer.Version,
+			Data: &SignedBeaconBlockDenebJson{
+				Message:   respContainer.Data.DenebBlock,
+				Signature: respContainer.Data.Signature,
+			},
+			ExecutionOptimistic: respContainer.ExecutionOptimistic,
+			Finalized:           respContainer.Finalized,
+		}
 	default:
 		return false, nil, apimiddleware.InternalServerError(fmt.Errorf("unsupported block version '%s'", respContainer.Version))
 	}
@@ -587,7 +668,7 @@ func serializeBlindedBlock(response interface{}) (apimiddleware.RunDefault, []by
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_PHASE0.String())):
 		actualRespContainer = &phase0BlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockContainerJson{
+			Data: &SignedBeaconBlockJson{
 				Message:   respContainer.Data.Phase0Block,
 				Signature: respContainer.Data.Signature,
 			},
@@ -597,7 +678,7 @@ func serializeBlindedBlock(response interface{}) (apimiddleware.RunDefault, []by
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_ALTAIR.String())):
 		actualRespContainer = &altairBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBeaconBlockAltairContainerJson{
+			Data: &SignedBeaconBlockAltairJson{
 				Message:   respContainer.Data.AltairBlock,
 				Signature: respContainer.Data.Signature,
 			},
@@ -607,7 +688,7 @@ func serializeBlindedBlock(response interface{}) (apimiddleware.RunDefault, []by
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_BELLATRIX.String())):
 		actualRespContainer = &bellatrixBlindedBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBlindedBeaconBlockBellatrixContainerJson{
+			Data: &SignedBlindedBeaconBlockBellatrixJson{
 				Message:   respContainer.Data.BellatrixBlock,
 				Signature: respContainer.Data.Signature,
 			},
@@ -617,13 +698,23 @@ func serializeBlindedBlock(response interface{}) (apimiddleware.RunDefault, []by
 	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_CAPELLA.String())):
 		actualRespContainer = &capellaBlindedBlockResponseJson{
 			Version: respContainer.Version,
-			Data: &SignedBlindedBeaconBlockCapellaContainerJson{
+			Data: &SignedBlindedBeaconBlockCapellaJson{
 				Message:   respContainer.Data.CapellaBlock,
 				Signature: respContainer.Data.Signature,
 			},
 			ExecutionOptimistic: respContainer.ExecutionOptimistic,
 			Finalized:           respContainer.Finalized,
 		}
+	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_DENEB.String())):
+		actualRespContainer = &denebBlindedBlockResponseJson{
+			Version: respContainer.Version,
+			Data: &SignedBlindedBeaconBlockDenebJson{
+				Message:   respContainer.Data.DenebBlock,
+				Signature: respContainer.Data.Signature,
+			},
+			ExecutionOptimistic: respContainer.ExecutionOptimistic,
+			Finalized:           respContainer.Finalized,
+		}
 	default:
 		return false, nil, apimiddleware.InternalServerError(fmt.Errorf("unsupported block version '%s'", respContainer.Version))
 	}
@@ -655,6 +746,11 @@ type capellaStateResponseJson struct {
 	Data    *BeaconStateCapellaJson `json:"data"`
 }
 
+type denebStateResponseJson struct {
+	Version string                `json:"version" enum:"true"`
+	Data    *BeaconStateDenebJson `json:"data"`
+}
+
 func serializeV2State(response interface{}) (apimiddleware.RunDefault, []byte, apimiddleware.ErrorJson) {
 	respContainer, ok := response.(*BeaconStateV2ResponseJson)
 	if !ok {
@@ -683,6 +779,11 @@ func serializeV2State(response interface{}) (apimiddleware.RunDefault, []byte, a
 			Version: respContainer.Version,
 			Data:    respContainer.Data.CapellaState,
 		}
+	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_DENEB.String())):
+		actualRespContainer = &denebStateResponseJson{
+			Version: respContainer.Version,
+			Data:    respContainer.Data.DenebState,
+		}
 	default:
 		return false, nil, apimiddleware.InternalServerError(fmt.Errorf("unsupported state version '%s'", respContainer.Version))
 	}
@@ -714,6 +815,11 @@ type capellaProduceBlockResponseJson struct {
 	Data    *BeaconBlockCapellaJson `json:"data"`
 }
 
+type denebProduceBlockResponseJson struct {
+	Version string                        `json:"version" enum:"true"`
+	Data    *BeaconBlockContentsDenebJson `json:"data"`
+}
+
 type bellatrixProduceBlindedBlockResponseJson struct {
 	Version string                           `json:"version" enum:"true"`
 	Data    *BlindedBeaconBlockBellatrixJson `json:"data"`
@@ -724,6 +830,11 @@ type capellaProduceBlindedBlockResponseJson struct {
 	Data    *BlindedBeaconBlockCapellaJson `json:"data"`
 }
 
+type denebProduceBlindedBlockResponseJson struct {
+	Version string                               `json:"version" enum:"true"`
+	Data    *BlindedBeaconBlockContentsDenebJson `json:"data"`
+}
+
 func serializeProducedV2Block(response interface{}) (apimiddleware.RunDefault, []byte, apimiddleware.ErrorJson) {
 	respContainer, ok := response.(*ProduceBlockResponseV2Json)
 	if !ok {
@@ -752,6 +863,11 @@ func serializeProducedV2Block(response interface{}) (apimiddleware.RunDefault, [
 			Version: respContainer.Version,
 			Data:    respContainer.Data.CapellaBlock,
 		}
+	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_DENEB.String())):
+		actualRespContainer = &denebProduceBlockResponseJson{
+			Version: respContainer.Version,
+			Data:    respContainer.Data.DenebContents,
+		}
 	default:
 		return false, nil, apimiddleware.InternalServerError(fmt.Errorf("unsupported block version '%s'", respContainer.Version))
 	}
@@ -791,6 +907,11 @@ func serializeProducedBlindedBlock(response interface{}) (apimiddleware.RunDefau
 			Version: respContainer.Version,
 			Data:    respContainer.Data.CapellaBlock,
 		}
+	case strings.EqualFold(respContainer.Version, strings.ToLower(ethpbv2.Version_DENEB.String())):
+		actualRespContainer = &denebProduceBlindedBlockResponseJson{
+			Version: respContainer.Version,
+			Data:    respContainer.Data.DenebContents,
+		}
 	default:
 		return false, nil, apimiddleware.InternalServerError(fmt.Errorf("unsupported block version '%s'", respContainer.Version))
 	}

beacon-chain/rpc/apimiddleware/custom_hooks_test.go

@@ -406,13 +406,15 @@ func TestSetInitialPublishBlockPostRequest(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	cfg := params.BeaconConfig().Copy()
 	cfg.BellatrixForkEpoch = params.BeaconConfig().AltairForkEpoch + 1
+	cfg.CapellaForkEpoch = params.BeaconConfig().BellatrixForkEpoch + 1
+	cfg.DenebForkEpoch = params.BeaconConfig().CapellaForkEpoch + 1
 	params.OverrideBeaconConfig(cfg)
 
 	endpoint := &apimiddleware.Endpoint{}
 	s := struct {
 		Message struct {
 			Slot string
-		}
+		} `json:"message"`
 	}{}
 	t.Run("Phase 0", func(t *testing.T) {
 		s.Message = struct{ Slot string }{Slot: "0"}
@@ -425,7 +427,7 @@ func TestSetInitialPublishBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 	t.Run("Altair", func(t *testing.T) {
 		slot, err := slots.EpochStart(params.BeaconConfig().AltairForkEpoch)
@@ -440,7 +442,7 @@ func TestSetInitialPublishBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockAltairContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockAltairJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 	t.Run("Bellatrix", func(t *testing.T) {
 		slot, err := slots.EpochStart(params.BeaconConfig().BellatrixForkEpoch)
@@ -455,7 +457,7 @@ func TestSetInitialPublishBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockBellatrixContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockBellatrixJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 	t.Run("Capella", func(t *testing.T) {
 		params.SetupTestConfigCleanup(t)
@@ -475,14 +477,48 @@ func TestSetInitialPublishBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockCapellaContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockCapellaJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+	})
+	t.Run("Deneb", func(t *testing.T) {
+		params.SetupTestConfigCleanup(t)
+		cfg := params.BeaconConfig()
+		cfg.DenebForkEpoch = cfg.CapellaForkEpoch.Add(2)
+		params.OverrideBeaconConfig(cfg)
+		slot, err := slots.EpochStart(params.BeaconConfig().DenebForkEpoch)
+		require.NoError(t, err)
+		denebS := struct {
+			SignedBlock struct {
+				Message struct {
+					Slot string
+				} `json:"message"`
+			} `json:"signed_block"`
+		}{}
+		denebS.SignedBlock = struct {
+			Message struct {
+				Slot string
+			} `json:"message"`
+		}{
+			Message: struct {
+				Slot string
+			}{Slot: strconv.FormatUint(uint64(slot), 10)},
+		}
+		j, err := json.Marshal(denebS)
+		require.NoError(t, err)
+		var body bytes.Buffer
+		_, err = body.Write(j)
+		require.NoError(t, err)
+		request := httptest.NewRequest("POST", "http://foo.example", &body)
+		runDefault, errJson := setInitialPublishBlockPostRequest(endpoint, nil, request)
+		require.Equal(t, true, errJson == nil)
+		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockContentsDenebJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 }
 
 func TestPreparePublishedBlock(t *testing.T) {
 	t.Run("Phase 0", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBeaconBlockContainerJson{
+			PostRequest: &SignedBeaconBlockJson{
 				Message: &BeaconBlockJson{
 					Body: &BeaconBlockBodyJson{},
 				},
@@ -496,7 +532,7 @@ func TestPreparePublishedBlock(t *testing.T) {
 
 	t.Run("Altair", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBeaconBlockAltairContainerJson{
+			PostRequest: &SignedBeaconBlockAltairJson{
 				Message: &BeaconBlockAltairJson{
 					Body: &BeaconBlockBodyAltairJson{},
 				},
@@ -510,7 +546,7 @@ func TestPreparePublishedBlock(t *testing.T) {
 
 	t.Run("Bellatrix", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBeaconBlockBellatrixContainerJson{
+			PostRequest: &SignedBeaconBlockBellatrixJson{
 				Message: &BeaconBlockBellatrixJson{
 					Body: &BeaconBlockBodyBellatrixJson{},
 				},
@@ -532,13 +568,15 @@ func TestSetInitialPublishBlindedBlockPostRequest(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	cfg := params.BeaconConfig().Copy()
 	cfg.BellatrixForkEpoch = params.BeaconConfig().AltairForkEpoch + 1
+	cfg.CapellaForkEpoch = params.BeaconConfig().BellatrixForkEpoch + 1
+	cfg.DenebForkEpoch = params.BeaconConfig().CapellaForkEpoch + 1
 	params.OverrideBeaconConfig(cfg)
 
 	endpoint := &apimiddleware.Endpoint{}
 	s := struct {
 		Message struct {
 			Slot string
-		}
+		} `json:"message"`
 	}{}
 	t.Run("Phase 0", func(t *testing.T) {
 		s.Message = struct{ Slot string }{Slot: "0"}
@@ -551,7 +589,7 @@ func TestSetInitialPublishBlindedBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlindedBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 	t.Run("Altair", func(t *testing.T) {
 		slot, err := slots.EpochStart(params.BeaconConfig().AltairForkEpoch)
@@ -566,7 +604,7 @@ func TestSetInitialPublishBlindedBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlindedBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockAltairContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBeaconBlockAltairJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 	t.Run("Bellatrix", func(t *testing.T) {
 		slot, err := slots.EpochStart(params.BeaconConfig().BellatrixForkEpoch)
@@ -581,14 +619,59 @@ func TestSetInitialPublishBlindedBlockPostRequest(t *testing.T) {
 		runDefault, errJson := setInitialPublishBlindedBlockPostRequest(endpoint, nil, request)
 		require.Equal(t, true, errJson == nil)
 		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
-		assert.Equal(t, reflect.TypeOf(SignedBlindedBeaconBlockBellatrixContainerJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+		assert.Equal(t, reflect.TypeOf(SignedBlindedBeaconBlockBellatrixJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+	})
+	t.Run("Capella", func(t *testing.T) {
+		slot, err := slots.EpochStart(params.BeaconConfig().CapellaForkEpoch)
+		require.NoError(t, err)
+		s.Message = struct{ Slot string }{Slot: strconv.FormatUint(uint64(slot), 10)}
+		j, err := json.Marshal(s)
+		require.NoError(t, err)
+		var body bytes.Buffer
+		_, err = body.Write(j)
+		require.NoError(t, err)
+		request := httptest.NewRequest("POST", "http://foo.example", &body)
+		runDefault, errJson := setInitialPublishBlindedBlockPostRequest(endpoint, nil, request)
+		require.Equal(t, true, errJson == nil)
+		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
+		assert.Equal(t, reflect.TypeOf(SignedBlindedBeaconBlockCapellaJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
+	})
+	t.Run("Deneb", func(t *testing.T) {
+		slot, err := slots.EpochStart(params.BeaconConfig().DenebForkEpoch)
+		require.NoError(t, err)
+		denebS := struct {
+			SignedBlindedBlock struct {
+				Message struct {
+					Slot string
+				} `json:"message"`
+			} `json:"signed_blinded_block"`
+		}{}
+		denebS.SignedBlindedBlock = struct {
+			Message struct {
+				Slot string
+			} `json:"message"`
+		}{
+			Message: struct {
+				Slot string
+			}{Slot: strconv.FormatUint(uint64(slot), 10)},
+		}
+		j, err := json.Marshal(denebS)
+		require.NoError(t, err)
+		var body bytes.Buffer
+		_, err = body.Write(j)
+		require.NoError(t, err)
+		request := httptest.NewRequest("POST", "http://foo.example", &body)
+		runDefault, errJson := setInitialPublishBlindedBlockPostRequest(endpoint, nil, request)
+		require.Equal(t, true, errJson == nil)
+		assert.Equal(t, apimiddleware.RunDefault(true), runDefault)
+		assert.Equal(t, reflect.TypeOf(SignedBlindedBeaconBlockContentsDenebJson{}).Name(), reflect.Indirect(reflect.ValueOf(endpoint.PostRequest)).Type().Name())
 	})
 }
 
 func TestPreparePublishedBlindedBlock(t *testing.T) {
 	t.Run("Phase 0", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBeaconBlockContainerJson{
+			PostRequest: &SignedBeaconBlockJson{
 				Message: &BeaconBlockJson{
 					Body: &BeaconBlockBodyJson{},
 				},
@@ -602,7 +685,7 @@ func TestPreparePublishedBlindedBlock(t *testing.T) {
 
 	t.Run("Altair", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBeaconBlockAltairContainerJson{
+			PostRequest: &SignedBeaconBlockAltairJson{
 				Message: &BeaconBlockAltairJson{
 					Body: &BeaconBlockBodyAltairJson{},
 				},
@@ -616,7 +699,7 @@ func TestPreparePublishedBlindedBlock(t *testing.T) {
 
 	t.Run("Bellatrix", func(t *testing.T) {
 		endpoint := &apimiddleware.Endpoint{
-			PostRequest: &SignedBlindedBeaconBlockBellatrixContainerJson{
+			PostRequest: &SignedBlindedBeaconBlockBellatrixJson{
 				Message: &BlindedBeaconBlockBellatrixJson{
 					Body: &BlindedBeaconBlockBodyBellatrixJson{},
 				},
@@ -627,7 +710,34 @@ func TestPreparePublishedBlindedBlock(t *testing.T) {
 		_, ok := endpoint.PostRequest.(*bellatrixPublishBlindedBlockRequestJson)
 		assert.Equal(t, true, ok)
 	})
+	t.Run("Capella", func(t *testing.T) {
+		endpoint := &apimiddleware.Endpoint{
+			PostRequest: &SignedBlindedBeaconBlockCapellaJson{
+				Message: &BlindedBeaconBlockCapellaJson{
+					Body: &BlindedBeaconBlockBodyCapellaJson{},
+				},
+			},
+		}
+		errJson := preparePublishedBlindedBlock(endpoint, nil, nil)
+		require.Equal(t, true, errJson == nil)
+		_, ok := endpoint.PostRequest.(*capellaPublishBlindedBlockRequestJson)
+		assert.Equal(t, true, ok)
+	})
 
+	t.Run("Deneb", func(t *testing.T) {
+		endpoint := &apimiddleware.Endpoint{
+			PostRequest: &SignedBlindedBeaconBlockContentsDenebJson{
+				SignedBlindedBlock: &SignedBlindedBeaconBlockDenebJson{
+					Message: &BlindedBeaconBlockDenebJson{},
+				},
+				SignedBlindedBlobSidecars: []*SignedBlindedBlobSidecarJson{},
+			},
+		}
+		errJson := preparePublishedBlindedBlock(endpoint, nil, nil)
+		require.Equal(t, true, errJson == nil)
+		_, ok := endpoint.PostRequest.(*denebPublishBlindedBlockRequestJson)
+		assert.Equal(t, true, ok)
+	})
 	t.Run("unsupported block type", func(t *testing.T) {
 		errJson := preparePublishedBlock(&apimiddleware.Endpoint{}, nil, nil)
 		assert.Equal(t, true, strings.Contains(errJson.Msg(), "unsupported block type"))
@@ -1159,6 +1269,56 @@ func TestSerializeProducedV2Block(t *testing.T) {
 		assert.Equal(t, "root", beaconBlock.StateRoot)
 		require.NotNil(t, beaconBlock.Body)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		response := &ProduceBlockResponseV2Json{
+			Version: ethpbv2.Version_DENEB.String(),
+			Data: &BeaconBlockContainerV2Json{
+				DenebContents: &BeaconBlockContentsDenebJson{
+					Block: &BeaconBlockDenebJson{
+						Slot:          "1",
+						ProposerIndex: "1",
+						ParentRoot:    "root",
+						StateRoot:     "root",
+						Body:          &BeaconBlockBodyDenebJson{},
+					},
+					BlobSidecars: []*BlobSidecarJson{{
+						BlockRoot:       "root",
+						Index:           "1",
+						Slot:            "1",
+						BlockParentRoot: "root",
+						ProposerIndex:   "1",
+						Blob:            "blob",
+						KzgCommitment:   "kzgcommitment",
+						KzgProof:        "kzgproof",
+					}},
+				},
+			},
+		}
+		runDefault, j, errJson := serializeProducedV2Block(response)
+		require.Equal(t, nil, errJson)
+		require.Equal(t, apimiddleware.RunDefault(false), runDefault)
+		require.NotNil(t, j)
+		resp := &denebProduceBlockResponseJson{}
+		require.NoError(t, json.Unmarshal(j, resp))
+		require.NotNil(t, resp.Data)
+		require.NotNil(t, resp.Data)
+		beaconBlock := resp.Data.Block
+		assert.Equal(t, "1", beaconBlock.Slot)
+		assert.Equal(t, "1", beaconBlock.ProposerIndex)
+		assert.Equal(t, "root", beaconBlock.ParentRoot)
+		assert.Equal(t, "root", beaconBlock.StateRoot)
+		assert.NotNil(t, beaconBlock.Body)
+		require.Equal(t, 1, len(resp.Data.BlobSidecars))
+		sidecar := resp.Data.BlobSidecars[0]
+		assert.Equal(t, "root", sidecar.BlockRoot)
+		assert.Equal(t, "1", sidecar.Index)
+		assert.Equal(t, "1", sidecar.Slot)
+		assert.Equal(t, "root", sidecar.BlockParentRoot)
+		assert.Equal(t, "1", sidecar.ProposerIndex)
+		assert.Equal(t, "blob", sidecar.Blob)
+		assert.Equal(t, "kzgcommitment", sidecar.KzgCommitment)
+		assert.Equal(t, "kzgproof", sidecar.KzgProof)
+	})
 	t.Run("incorrect response type", func(t *testing.T) {
 		response := &types.Empty{}
 		runDefault, j, errJson := serializeProducedV2Block(response)

beacon-chain/rpc/apimiddleware/structs.go

@@ -114,7 +114,7 @@ type BlockHeaderResponseJson struct {
 }
 
 type BlockResponseJson struct {
-	Data *SignedBeaconBlockContainerJson `json:"data"`
+	Data *SignedBeaconBlockJson `json:"data"`
 }
 
 type BlockV2ResponseJson struct {
@@ -366,7 +366,7 @@ type BlockRootContainerJson struct {
 	Root string `json:"root" hex:"true"`
 }
 
-type SignedBeaconBlockContainerJson struct {
+type SignedBeaconBlockJson struct {
 	Message   *BeaconBlockJson `json:"message"`
 	Signature string           `json:"signature" hex:"true"`
 }
@@ -395,6 +395,7 @@ type SignedBeaconBlockContainerV2Json struct {
 	AltairBlock    *BeaconBlockAltairJson    `json:"altair_block"`
 	BellatrixBlock *BeaconBlockBellatrixJson `json:"bellatrix_block"`
 	CapellaBlock   *BeaconBlockCapellaJson   `json:"capella_block"`
+	DenebBlock     *BeaconBlockDenebJson     `json:"deneb_block"`
 	Signature      string                    `json:"signature" hex:"true"`
 }
 
@@ -403,48 +404,111 @@ type SignedBlindedBeaconBlockContainerJson struct {
 	AltairBlock    *BeaconBlockAltairJson           `json:"altair_block"`
 	BellatrixBlock *BlindedBeaconBlockBellatrixJson `json:"bellatrix_block"`
 	CapellaBlock   *BlindedBeaconBlockCapellaJson   `json:"capella_block"`
+	DenebBlock     *BlindedBeaconBlockDenebJson     `json:"deneb_block"`
 	Signature      string                           `json:"signature" hex:"true"`
 }
 
+type SignedBlindedBeaconBlockContentsContainerJson struct {
+	Phase0Block    *SignedBeaconBlockJson                     `json:"phase0_block"`
+	AltairBlock    *SignedBeaconBlockAltairJson               `json:"altair_block"`
+	BellatrixBlock *SignedBlindedBeaconBlockBellatrixJson     `json:"bellatrix_block"`
+	CapellaBlock   *SignedBlindedBeaconBlockCapellaJson       `json:"capella_block"`
+	DenebContents  *SignedBlindedBeaconBlockContentsDenebJson `json:"deneb_contents"`
+}
+
 type BeaconBlockContainerV2Json struct {
-	Phase0Block    *BeaconBlockJson          `json:"phase0_block"`
-	AltairBlock    *BeaconBlockAltairJson    `json:"altair_block"`
-	BellatrixBlock *BeaconBlockBellatrixJson `json:"bellatrix_block"`
-	CapellaBlock   *BeaconBlockCapellaJson   `json:"capella_block"`
+	Phase0Block    *BeaconBlockJson              `json:"phase0_block"`
+	AltairBlock    *BeaconBlockAltairJson        `json:"altair_block"`
+	BellatrixBlock *BeaconBlockBellatrixJson     `json:"bellatrix_block"`
+	CapellaBlock   *BeaconBlockCapellaJson       `json:"capella_block"`
+	DenebContents  *BeaconBlockContentsDenebJson `json:"deneb_contents"`
 }
 
 type BlindedBeaconBlockContainerJson struct {
-	Phase0Block    *BeaconBlockJson                 `json:"phase0_block"`
-	AltairBlock    *BeaconBlockAltairJson           `json:"altair_block"`
-	BellatrixBlock *BlindedBeaconBlockBellatrixJson `json:"bellatrix_block"`
-	CapellaBlock   *BlindedBeaconBlockCapellaJson   `json:"capella_block"`
+	Phase0Block    *BeaconBlockJson                     `json:"phase0_block"`
+	AltairBlock    *BeaconBlockAltairJson               `json:"altair_block"`
+	BellatrixBlock *BlindedBeaconBlockBellatrixJson     `json:"bellatrix_block"`
+	CapellaBlock   *BlindedBeaconBlockCapellaJson       `json:"capella_block"`
+	DenebContents  *BlindedBeaconBlockContentsDenebJson `json:"deneb_contents"`
 }
 
-type SignedBeaconBlockAltairContainerJson struct {
+type SignedBeaconBlockAltairJson struct {
 	Message   *BeaconBlockAltairJson `json:"message"`
 	Signature string                 `json:"signature" hex:"true"`
 }
 
-type SignedBeaconBlockBellatrixContainerJson struct {
+type SignedBeaconBlockBellatrixJson struct {
 	Message   *BeaconBlockBellatrixJson `json:"message"`
 	Signature string                    `json:"signature" hex:"true"`
 }
 
-type SignedBeaconBlockCapellaContainerJson struct {
+type SignedBeaconBlockCapellaJson struct {
 	Message   *BeaconBlockCapellaJson `json:"message"`
 	Signature string                  `json:"signature" hex:"true"`
 }
 
-type SignedBlindedBeaconBlockBellatrixContainerJson struct {
+type SignedBeaconBlockContentsDenebJson struct {
+	SignedBlock        *SignedBeaconBlockDenebJson `json:"signed_block"`
+	SignedBlobSidecars []*SignedBlobSidecarJson    `json:"signed_blob_sidecars"`
+}
+
+type SignedBlobSidecarJson struct {
+	Message   *BlobSidecarJson `json:"message"`
+	Signature string           `json:"signature" hex:"true"`
+}
+
+type BlobSidecarJson struct {
+	BlockRoot       string `json:"block_root" hex:"true"`
+	Index           string `json:"index"`
+	Slot            string `json:"slot"`
+	BlockParentRoot string `json:"block_parent_root" hex:"true"`
+	ProposerIndex   string `json:"proposer_index"`
+	Blob            string `json:"blob" hex:"true"`                // pattern: "^0x[a-fA-F0-9]{262144}$"
+	KzgCommitment   string `json:"kzg_commitment" hex:"true"`      // pattern: "^0x[a-fA-F0-9]{96}$" ssz-size:"48"
+	KzgProof        string `json:"kzg_proof,omitempty" hex:"true"` // pattern: "^0x[a-fA-F0-9]{96}$" ssz-size:"48"
+}
+
+type BlindedBlobSidecarJson struct {
+	BlockRoot       string `json:"block_root" hex:"true"`
+	Index           string `json:"index"`
+	Slot            string `json:"slot"`
+	BlockParentRoot string `json:"block_parent_root" hex:"true"`
+	ProposerIndex   string `json:"proposer_index"`
+	BlobRoot        string `json:"blob_root" hex:"true"`
+	KzgCommitment   string `json:"kzg_commitment" hex:"true"`      // pattern: "^0x[a-fA-F0-9]{96}$" ssz-size:"48"
+	KzgProof        string `json:"kzg_proof,omitempty" hex:"true"` // pattern: "^0x[a-fA-F0-9]{96}$" ssz-size:"48"
+}
+
+type SignedBeaconBlockDenebJson struct {
+	Message   *BeaconBlockDenebJson `json:"message"`
+	Signature string                `json:"signature" hex:"true"`
+}
+
+type SignedBlindedBeaconBlockBellatrixJson struct {
 	Message   *BlindedBeaconBlockBellatrixJson `json:"message"`
 	Signature string                           `json:"signature" hex:"true"`
 }
 
-type SignedBlindedBeaconBlockCapellaContainerJson struct {
+type SignedBlindedBeaconBlockCapellaJson struct {
 	Message   *BlindedBeaconBlockCapellaJson `json:"message"`
 	Signature string                         `json:"signature" hex:"true"`
 }
 
+type SignedBlindedBeaconBlockContentsDenebJson struct {
+	SignedBlindedBlock        *SignedBlindedBeaconBlockDenebJson `json:"signed_blinded_block"`
+	SignedBlindedBlobSidecars []*SignedBlindedBlobSidecarJson    `json:"signed_blinded_blob_sidecars"`
+}
+
+type SignedBlindedBeaconBlockDenebJson struct {
+	Message   *BlindedBeaconBlockDenebJson `json:"message"`
+	Signature string                       `json:"signature" hex:"true"`
+}
+
+type SignedBlindedBlobSidecarJson struct {
+	Message   *BlindedBlobSidecarJson `json:"message"`
+	Signature string                  `json:"signature" hex:"true"`
+}
+
 type BeaconBlockAltairJson struct {
 	Slot          string                     `json:"slot"`
 	ProposerIndex string                     `json:"proposer_index"`
@@ -469,6 +533,19 @@ type BeaconBlockCapellaJson struct {
 	Body          *BeaconBlockBodyCapellaJson `json:"body"`
 }
 
+type BeaconBlockContentsDenebJson struct {
+	Block        *BeaconBlockDenebJson `json:"block"`
+	BlobSidecars []*BlobSidecarJson    `json:"blob_sidecars"`
+}
+
+type BeaconBlockDenebJson struct {
+	Slot          string                    `json:"slot"`
+	ProposerIndex string                    `json:"proposer_index"`
+	ParentRoot    string                    `json:"parent_root" hex:"true"`
+	StateRoot     string                    `json:"state_root" hex:"true"`
+	Body          *BeaconBlockBodyDenebJson `json:"body"`
+}
+
 type BlindedBeaconBlockBellatrixJson struct {
 	Slot          string                               `json:"slot"`
 	ProposerIndex string                               `json:"proposer_index"`
@@ -485,6 +562,19 @@ type BlindedBeaconBlockCapellaJson struct {
 	Body          *BlindedBeaconBlockBodyCapellaJson `json:"body"`
 }
 
+type BlindedBeaconBlockDenebJson struct {
+	Slot          string                           `json:"slot"`
+	ProposerIndex string                           `json:"proposer_index"`
+	ParentRoot    string                           `json:"parent_root" hex:"true"`
+	StateRoot     string                           `json:"state_root" hex:"true"`
+	Body          *BlindedBeaconBlockBodyDenebJson `json:"body"`
+}
+
+type BlindedBeaconBlockContentsDenebJson struct {
+	BlindedBlock        *BlindedBeaconBlockDenebJson `json:"blinded_block"`
+	BlindedBlobSidecars []*BlindedBlobSidecarJson    `json:"blinded_blob_sidecars"`
+}
+
 type BeaconBlockBodyAltairJson struct {
 	RandaoReveal      string                     `json:"randao_reveal" hex:"true"`
 	Eth1Data          *Eth1DataJson              `json:"eth1_data"`
@@ -524,6 +614,21 @@ type BeaconBlockBodyCapellaJson struct {
 	BLSToExecutionChanges []*SignedBLSToExecutionChangeJson `json:"bls_to_execution_changes"`
 }
 
+type BeaconBlockBodyDenebJson struct {
+	RandaoReveal          string                            `json:"randao_reveal" hex:"true"`
+	Eth1Data              *Eth1DataJson                     `json:"eth1_data"`
+	Graffiti              string                            `json:"graffiti" hex:"true"`
+	ProposerSlashings     []*ProposerSlashingJson           `json:"proposer_slashings"`
+	AttesterSlashings     []*AttesterSlashingJson           `json:"attester_slashings"`
+	Attestations          []*AttestationJson                `json:"attestations"`
+	Deposits              []*DepositJson                    `json:"deposits"`
+	VoluntaryExits        []*SignedVoluntaryExitJson        `json:"voluntary_exits"`
+	SyncAggregate         *SyncAggregateJson                `json:"sync_aggregate"`
+	ExecutionPayload      *ExecutionPayloadDenebJson        `json:"execution_payload"`
+	BLSToExecutionChanges []*SignedBLSToExecutionChangeJson `json:"bls_to_execution_changes"`
+	BlobKzgCommitments    []string                          `json:"blob_kzg_commitments" hex:"true"`
+}
+
 type BlindedBeaconBlockBodyBellatrixJson struct {
 	RandaoReveal           string                      `json:"randao_reveal" hex:"true"`
 	Eth1Data               *Eth1DataJson               `json:"eth1_data"`
@@ -551,6 +656,21 @@ type BlindedBeaconBlockBodyCapellaJson struct {
 	BLSToExecutionChanges  []*SignedBLSToExecutionChangeJson  `json:"bls_to_execution_changes"`
 }
 
+type BlindedBeaconBlockBodyDenebJson struct {
+	RandaoReveal           string                            `json:"randao_reveal" hex:"true"`
+	Eth1Data               *Eth1DataJson                     `json:"eth1_data"`
+	Graffiti               string                            `json:"graffiti" hex:"true"`
+	ProposerSlashings      []*ProposerSlashingJson           `json:"proposer_slashings"`
+	AttesterSlashings      []*AttesterSlashingJson           `json:"attester_slashings"`
+	Attestations           []*AttestationJson                `json:"attestations"`
+	Deposits               []*DepositJson                    `json:"deposits"`
+	VoluntaryExits         []*SignedVoluntaryExitJson        `json:"voluntary_exits"`
+	SyncAggregate          *SyncAggregateJson                `json:"sync_aggregate"`
+	ExecutionPayloadHeader *ExecutionPayloadHeaderDenebJson  `json:"execution_payload_header"`
+	BLSToExecutionChanges  []*SignedBLSToExecutionChangeJson `json:"bls_to_execution_changes"`
+	BlobKzgCommitments     []string                          `json:"blob_kzg_commitments" hex:"true"`
+}
+
 type ExecutionPayloadJson struct {
 	ParentHash    string   `json:"parent_hash" hex:"true"`
 	FeeRecipient  string   `json:"fee_recipient" hex:"true"`
@@ -586,6 +706,26 @@ type ExecutionPayloadCapellaJson struct {
 	Withdrawals   []*WithdrawalJson `json:"withdrawals"`
 }
 
+type ExecutionPayloadDenebJson struct {
+	ParentHash    string            `json:"parent_hash" hex:"true"`
+	FeeRecipient  string            `json:"fee_recipient" hex:"true"`
+	StateRoot     string            `json:"state_root" hex:"true"`
+	ReceiptsRoot  string            `json:"receipts_root" hex:"true"`
+	LogsBloom     string            `json:"logs_bloom" hex:"true"`
+	PrevRandao    string            `json:"prev_randao" hex:"true"`
+	BlockNumber   string            `json:"block_number"`
+	GasLimit      string            `json:"gas_limit"`
+	GasUsed       string            `json:"gas_used"`
+	TimeStamp     string            `json:"timestamp"`
+	ExtraData     string            `json:"extra_data" hex:"true"`
+	BaseFeePerGas string            `json:"base_fee_per_gas" uint256:"true"`
+	DataGasUsed   string            `json:"data_gas_used"`   // new in deneb
+	ExcessDataGas string            `json:"excess_data_gas"` // new in deneb
+	BlockHash     string            `json:"block_hash" hex:"true"`
+	Transactions  []string          `json:"transactions" hex:"true"`
+	Withdrawals   []*WithdrawalJson `json:"withdrawals"`
+}
+
 type ExecutionPayloadHeaderJson struct {
 	ParentHash       string `json:"parent_hash" hex:"true"`
 	FeeRecipient     string `json:"fee_recipient" hex:"true"`
@@ -621,6 +761,26 @@ type ExecutionPayloadHeaderCapellaJson struct {
 	WithdrawalsRoot  string `json:"withdrawals_root" hex:"true"`
 }
 
+type ExecutionPayloadHeaderDenebJson struct {
+	ParentHash       string `json:"parent_hash" hex:"true"`
+	FeeRecipient     string `json:"fee_recipient" hex:"true"`
+	StateRoot        string `json:"state_root" hex:"true"`
+	ReceiptsRoot     string `json:"receipts_root" hex:"true"`
+	LogsBloom        string `json:"logs_bloom" hex:"true"`
+	PrevRandao       string `json:"prev_randao" hex:"true"`
+	BlockNumber      string `json:"block_number"`
+	GasLimit         string `json:"gas_limit"`
+	GasUsed          string `json:"gas_used"`
+	TimeStamp        string `json:"timestamp"`
+	ExtraData        string `json:"extra_data" hex:"true"`
+	BaseFeePerGas    string `json:"base_fee_per_gas" uint256:"true"`
+	DataGasUsed      string `json:"data_gas_used"`   // new in deneb
+	ExcessDataGas    string `json:"excess_data_gas"` // new in deneb
+	BlockHash        string `json:"block_hash" hex:"true"`
+	TransactionsRoot string `json:"transactions_root" hex:"true"`
+	WithdrawalsRoot  string `json:"withdrawals_root" hex:"true"`
+}
+
 type SyncAggregateJson struct {
 	SyncCommitteeBits      string `json:"sync_committee_bits" hex:"true"`
 	SyncCommitteeSignature string `json:"sync_committee_signature" hex:"true"`
@@ -877,11 +1037,43 @@ type BeaconStateCapellaJson struct {
 	HistoricalSummaries          []*HistoricalSummaryJson           `json:"historical_summaries"`
 }
 
+type BeaconStateDenebJson struct {
+	GenesisTime                  string                           `json:"genesis_time"`
+	GenesisValidatorsRoot        string                           `json:"genesis_validators_root" hex:"true"`
+	Slot                         string                           `json:"slot"`
+	Fork                         *ForkJson                        `json:"fork"`
+	LatestBlockHeader            *BeaconBlockHeaderJson           `json:"latest_block_header"`
+	BlockRoots                   []string                         `json:"block_roots" hex:"true"`
+	StateRoots                   []string                         `json:"state_roots" hex:"true"`
+	HistoricalRoots              []string                         `json:"historical_roots" hex:"true"`
+	Eth1Data                     *Eth1DataJson                    `json:"eth1_data"`
+	Eth1DataVotes                []*Eth1DataJson                  `json:"eth1_data_votes"`
+	Eth1DepositIndex             string                           `json:"eth1_deposit_index"`
+	Validators                   []*ValidatorJson                 `json:"validators"`
+	Balances                     []string                         `json:"balances"`
+	RandaoMixes                  []string                         `json:"randao_mixes" hex:"true"`
+	Slashings                    []string                         `json:"slashings"`
+	PreviousEpochParticipation   EpochParticipation               `json:"previous_epoch_participation"`
+	CurrentEpochParticipation    EpochParticipation               `json:"current_epoch_participation"`
+	JustificationBits            string                           `json:"justification_bits" hex:"true"`
+	PreviousJustifiedCheckpoint  *CheckpointJson                  `json:"previous_justified_checkpoint"`
+	CurrentJustifiedCheckpoint   *CheckpointJson                  `json:"current_justified_checkpoint"`
+	FinalizedCheckpoint          *CheckpointJson                  `json:"finalized_checkpoint"`
+	InactivityScores             []string                         `json:"inactivity_scores"`
+	CurrentSyncCommittee         *SyncCommitteeJson               `json:"current_sync_committee"`
+	NextSyncCommittee            *SyncCommitteeJson               `json:"next_sync_committee"`
+	LatestExecutionPayloadHeader *ExecutionPayloadHeaderDenebJson `json:"latest_execution_payload_header"` // new in deneb
+	NextWithdrawalIndex          string                           `json:"next_withdrawal_index"`
+	NextWithdrawalValidatorIndex string                           `json:"next_withdrawal_validator_index"`
+	HistoricalSummaries          []*HistoricalSummaryJson         `json:"historical_summaries"`
+}
+
 type BeaconStateContainerV2Json struct {
 	Phase0State    *BeaconStateJson          `json:"phase0_state"`
 	AltairState    *BeaconStateAltairJson    `json:"altair_state"`
 	BellatrixState *BeaconStateBellatrixJson `json:"bellatrix_state"`
 	CapellaState   *BeaconStateCapellaJson   `json:"capella_state"`
+	DenebState     *BeaconStateDenebJson     `json:"deneb_state"`
 }
 
 type ForkJson struct {

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

@@ -75,6 +75,15 @@ func (bs *Server) GetBlindedBlock(ctx context.Context, req *ethpbv1.BlockRequest
 	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
 		return nil, status.Errorf(codes.Internal, "Could not get blinded block: %v", err)
 	}
+	result, err = bs.getBlindedBlockDeneb(ctx, blk)
+	if result != nil {
+		result.Finalized = bs.FinalizationFetcher.IsFinalized(ctx, blkRoot)
+		return result, nil
+	}
+	// ErrUnsupportedField means that we have another block type
+	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
+		return nil, status.Errorf(codes.Internal, "Could not get blinded block: %v", err)
+	}
 
 	return nil, status.Errorf(codes.Internal, "Unknown block type %T", blk)
 }
@@ -130,6 +139,15 @@ func (bs *Server) GetBlindedBlockSSZ(ctx context.Context, req *ethpbv1.BlockRequ
 	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
 		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
 	}
+	result, err = bs.getBlindedSSZBlockDeneb(ctx, blk)
+	if result != nil {
+		result.Finalized = bs.FinalizationFetcher.IsFinalized(ctx, blkRoot)
+		return result, nil
+	}
+	// ErrUnsupportedField means that we have another block type
+	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
+		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
+	}
 
 	return nil, status.Errorf(codes.Internal, "Unknown block type %T", blk)
 }
@@ -142,7 +160,7 @@ func (bs *Server) GetBlindedBlockSSZ(ctx context.Context, req *ethpbv1.BlockRequ
 // successful. The beacon node is expected to integrate the new block into its state, and
 // therefore validate the block internally, however blocks which fail the validation are still
 // broadcast but a different status code is returned (202).
-func (bs *Server) SubmitBlindedBlock(ctx context.Context, req *ethpbv2.SignedBlindedBeaconBlockContainer) (*emptypb.Empty, error) {
+func (bs *Server) SubmitBlindedBlock(ctx context.Context, req *ethpbv2.SignedBlindedBeaconBlockContentsContainer) (*emptypb.Empty, error) {
 	ctx, span := trace.StartSpan(ctx, "beacon.SubmitBlindedBlock")
 	defer span.End()
 
@@ -152,20 +170,24 @@ func (bs *Server) SubmitBlindedBlock(ctx context.Context, req *ethpbv2.SignedBli
 	}
 
 	switch blkContainer := req.Message.(type) {
-	case *ethpbv2.SignedBlindedBeaconBlockContainer_CapellaBlock:
-		if err := bs.submitBlindedCapellaBlock(ctx, blkContainer.CapellaBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBlindedBeaconBlockContentsContainer_DenebContents:
+		if err := bs.submitBlindedDenebContents(ctx, blkContainer.DenebContents); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBlindedBeaconBlockContainer_BellatrixBlock:
-		if err := bs.submitBlindedBellatrixBlock(ctx, blkContainer.BellatrixBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBlindedBeaconBlockContentsContainer_CapellaBlock:
+		if err := bs.submitBlindedCapellaBlock(ctx, blkContainer.CapellaBlock.Message, blkContainer.CapellaBlock.Signature); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBlindedBeaconBlockContainer_Phase0Block:
-		if err := bs.submitPhase0Block(ctx, blkContainer.Phase0Block, req.Signature); err != nil {
+	case *ethpbv2.SignedBlindedBeaconBlockContentsContainer_BellatrixBlock:
+		if err := bs.submitBlindedBellatrixBlock(ctx, blkContainer.BellatrixBlock.Message, blkContainer.BellatrixBlock.Signature); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBlindedBeaconBlockContainer_AltairBlock:
-		if err := bs.submitAltairBlock(ctx, blkContainer.AltairBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBlindedBeaconBlockContentsContainer_Phase0Block:
+		if err := bs.submitPhase0Block(ctx, blkContainer.Phase0Block.Block, blkContainer.Phase0Block.Signature); err != nil {
+			return nil, err
+		}
+	case *ethpbv2.SignedBlindedBeaconBlockContentsContainer_AltairBlock:
+		if err := bs.submitAltairBlock(ctx, blkContainer.AltairBlock.Message, blkContainer.AltairBlock.Signature); err != nil {
 			return nil, err
 		}
 	default:
@@ -481,6 +503,76 @@ func (bs *Server) getBlindedBlockCapella(ctx context.Context, blk interfaces.Rea
 	}, nil
 }
 
+func (bs *Server) getBlindedBlockDeneb(ctx context.Context, blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.BlindedBlockResponse, error) {
+	denebBlk, err := blk.PbDenebBlock()
+	if err != nil {
+		// ErrUnsupportedGetter means that we have another block type
+		if errors.Is(err, consensus_types.ErrUnsupportedField) {
+			if blindedDenebBlk, err := blk.PbBlindedDenebBlock(); err == nil {
+				if blindedDenebBlk == nil {
+					return nil, errNilBlock
+				}
+				v2Blk, err := migration.V1Alpha1BeaconBlockBlindedDenebToV2Blinded(blindedDenebBlk.Block)
+				if err != nil {
+					return nil, errors.Wrapf(err, "Could not convert beacon block")
+				}
+				root, err := blk.Block().HashTreeRoot()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get block root")
+				}
+				isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not check if block is optimistic")
+				}
+				sig := blk.Signature()
+				return &ethpbv2.BlindedBlockResponse{
+					Version: ethpbv2.Version_DENEB,
+					Data: &ethpbv2.SignedBlindedBeaconBlockContainer{
+						Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_DenebBlock{DenebBlock: v2Blk},
+						Signature: sig[:],
+					},
+					ExecutionOptimistic: isOptimistic,
+				}, nil
+			}
+			return nil, err
+		}
+		return nil, err
+	}
+
+	if denebBlk == nil {
+		return nil, errNilBlock
+	}
+	blindedBlkInterface, err := blk.ToBlinded()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not convert block to blinded block")
+	}
+	blindedDenebBlock, err := blindedBlkInterface.PbBlindedDenebBlock()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get signed beacon block")
+	}
+	v2Blk, err := migration.V1Alpha1BeaconBlockBlindedDenebToV2Blinded(blindedDenebBlock.Block)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not convert beacon block")
+	}
+	root, err := blk.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get block root")
+	}
+	isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not check if block is optimistic")
+	}
+	sig := blk.Signature()
+	return &ethpbv2.BlindedBlockResponse{
+		Version: ethpbv2.Version_CAPELLA,
+		Data: &ethpbv2.SignedBlindedBeaconBlockContainer{
+			Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_DenebBlock{DenebBlock: v2Blk},
+			Signature: sig[:],
+		},
+		ExecutionOptimistic: isOptimistic,
+	}, nil
+}
+
 func (bs *Server) getBlindedSSZBlockBellatrix(ctx context.Context, blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.SSZContainer, error) {
 	bellatrixBlk, err := blk.PbBellatrixBlock()
 	if err != nil {
@@ -631,6 +723,81 @@ func (bs *Server) getBlindedSSZBlockCapella(ctx context.Context, blk interfaces.
 	return &ethpbv2.SSZContainer{Version: ethpbv2.Version_CAPELLA, ExecutionOptimistic: isOptimistic, Data: sszData}, nil
 }
 
+func (bs *Server) getBlindedSSZBlockDeneb(ctx context.Context, blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.SSZContainer, error) {
+	denebBlk, err := blk.PbDenebBlock()
+	if err != nil {
+		// ErrUnsupportedGetter means that we have another block type
+		if errors.Is(err, consensus_types.ErrUnsupportedField) {
+			if blindedDenebBlk, err := blk.PbBlindedDenebBlock(); err == nil {
+				if blindedDenebBlk == nil {
+					return nil, errNilBlock
+				}
+				v2Blk, err := migration.V1Alpha1BeaconBlockBlindedDenebToV2Blinded(blindedDenebBlk.Block)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get signed beacon block")
+				}
+				root, err := blk.Block().HashTreeRoot()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get block root")
+				}
+				isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not check if block is optimistic")
+				}
+				sig := blk.Signature()
+				data := &ethpbv2.SignedBlindedBeaconBlockDeneb{
+					Message:   v2Blk,
+					Signature: sig[:],
+				}
+				sszData, err := data.MarshalSSZ()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not marshal block into SSZ")
+				}
+				return &ethpbv2.SSZContainer{
+					Version:             ethpbv2.Version_DENEB,
+					ExecutionOptimistic: isOptimistic,
+					Data:                sszData,
+				}, nil
+			}
+			return nil, err
+		}
+	}
+
+	if denebBlk == nil {
+		return nil, errNilBlock
+	}
+	blindedBlkInterface, err := blk.ToBlinded()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not convert block to blinded block")
+	}
+	blindedDenebBlock, err := blindedBlkInterface.PbBlindedDenebBlock()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get signed beacon block")
+	}
+	v2Blk, err := migration.V1Alpha1BeaconBlockBlindedDenebToV2Blinded(blindedDenebBlock.Block)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get signed beacon block")
+	}
+	root, err := blk.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get block root")
+	}
+	isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not check if block is optimistic")
+	}
+	sig := blk.Signature()
+	data := &ethpbv2.SignedBlindedBeaconBlockDeneb{
+		Message:   v2Blk,
+		Signature: sig[:],
+	}
+	sszData, err := data.MarshalSSZ()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not marshal block into SSZ")
+	}
+	return &ethpbv2.SSZContainer{Version: ethpbv2.Version_DENEB, ExecutionOptimistic: isOptimistic, Data: sszData}, nil
+}
+
 func (bs *Server) submitBlindedBellatrixBlock(ctx context.Context, blindedBellatrixBlk *ethpbv2.BlindedBeaconBlockBellatrix, sig []byte) error {
 	b, err := migration.BlindedBellatrixToV1Alpha1SignedBlock(&ethpbv2.SignedBlindedBeaconBlockBellatrix{
 		Message:   blindedBellatrixBlk,
@@ -674,3 +841,29 @@ func (bs *Server) submitBlindedCapellaBlock(ctx context.Context, blindedCapellaB
 	}
 	return nil
 }
+
+func (bs *Server) submitBlindedDenebContents(ctx context.Context, blindedDenebContents *ethpbv2.SignedBlindedBeaconBlockContentsDeneb) error {
+	blk, err := migration.BlindedDenebToV1Alpha1SignedBlock(&ethpbv2.SignedBlindedBeaconBlockDeneb{
+		Message:   blindedDenebContents.SignedBlindedBlock.Message,
+		Signature: blindedDenebContents.SignedBlindedBlock.Signature,
+	})
+	if err != nil {
+		return status.Errorf(codes.Internal, "Could not get blinded block: %v", err)
+	}
+	blobs := migration.SignedBlindedBlobsToV1Alpha1SignedBlindedBlobs(blindedDenebContents.SignedBlindedBlobSidecars)
+	_, err = bs.V1Alpha1ValidatorServer.ProposeBeaconBlock(ctx, &eth.GenericSignedBeaconBlock{
+		Block: &eth.GenericSignedBeaconBlock_BlindedDeneb{
+			BlindedDeneb: &eth.SignedBlindedBeaconBlockAndBlobsDeneb{
+				Block: blk,
+				Blobs: blobs,
+			},
+		},
+	})
+	if err != nil {
+		if strings.Contains(err.Error(), validator.CouldNotDecodeBlock) {
+			return status.Error(codes.InvalidArgument, err.Error())
+		}
+		return status.Errorf(codes.Internal, "Could not propose blinded block: %v", err)
+	}
+	return nil
+}

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

@@ -103,6 +103,27 @@ func TestServer_GetBlindedBlock(t *testing.T) {
 		assert.DeepEqual(t, expected, capellaBlock.CapellaBlock)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		b := util.NewBlindedBeaconBlockDeneb()
+		blk, err := blocks.NewSignedBeaconBlock(b)
+		require.NoError(t, err)
+
+		mockChainService := &mock.ChainService{}
+		bs := &Server{
+			FinalizationFetcher:   mockChainService,
+			Blocker:               &testutil.MockBlocker{BlockToReturn: blk},
+			OptimisticModeFetcher: mockChainService,
+		}
+
+		expected, err := migration.V1Alpha1BeaconBlockBlindedDenebToV2Blinded(b.Block)
+		require.NoError(t, err)
+		resp, err := bs.GetBlindedBlock(ctx, &ethpbv1.BlockRequest{})
+		require.NoError(t, err)
+		capellaBlock, ok := resp.Data.Message.(*ethpbv2.SignedBlindedBeaconBlockContainer_DenebBlock)
+		require.Equal(t, true, ok)
+		assert.DeepEqual(t, expected, capellaBlock.DenebBlock)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 	t.Run("execution optimistic", func(t *testing.T) {
 		b := util.NewBlindedBeaconBlockBellatrix()
 		blk, err := blocks.NewSignedBeaconBlock(b)
@@ -242,6 +263,26 @@ func TestServer_GetBlindedBlockSSZ(t *testing.T) {
 		assert.DeepEqual(t, expected, resp.Data)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		b := util.NewBlindedBeaconBlockDeneb()
+		blk, err := blocks.NewSignedBeaconBlock(b)
+		require.NoError(t, err)
+
+		mockChainService := &mock.ChainService{}
+		bs := &Server{
+			FinalizationFetcher:   mockChainService,
+			Blocker:               &testutil.MockBlocker{BlockToReturn: blk},
+			OptimisticModeFetcher: mockChainService,
+		}
+
+		expected, err := blk.MarshalSSZ()
+		require.NoError(t, err)
+		resp, err := bs.GetBlindedBlockSSZ(ctx, &ethpbv1.BlockRequest{})
+		require.NoError(t, err)
+		assert.NotNil(t, resp)
+		assert.DeepEqual(t, expected, resp.Data)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 	t.Run("execution optimistic", func(t *testing.T) {
 		b := util.NewBlindedBeaconBlockBellatrix()
 		blk, err := blocks.NewSignedBeaconBlock(b)
@@ -449,9 +490,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBlindedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_Phase0Block{Phase0Block: &ethpbv1.BeaconBlock{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBlindedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBlindedBeaconBlockContentsContainer_Phase0Block{Phase0Block: &ethpbv1.SignedBeaconBlock{}},
 		}
 		_, err := server.SubmitBlindedBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -464,9 +504,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBlindedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_AltairBlock{AltairBlock: &ethpbv2.BeaconBlockAltair{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBlindedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBlindedBeaconBlockContentsContainer_AltairBlock{AltairBlock: &ethpbv2.SignedBeaconBlockAltair{}},
 		}
 		_, err := server.SubmitBlindedBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -479,9 +518,8 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBlindedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_BellatrixBlock{BellatrixBlock: &ethpbv2.BlindedBeaconBlockBellatrix{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBlindedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBlindedBeaconBlockContentsContainer_BellatrixBlock{BellatrixBlock: &ethpbv2.SignedBlindedBeaconBlockBellatrix{}},
 		}
 		_, err := server.SubmitBlindedBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -494,9 +532,27 @@ func TestSubmitBlindedBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBlindedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBlindedBeaconBlockContainer_CapellaBlock{CapellaBlock: &ethpbv2.BlindedBeaconBlockCapella{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBlindedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBlindedBeaconBlockContentsContainer_CapellaBlock{CapellaBlock: &ethpbv2.SignedBlindedBeaconBlockCapella{}},
+		}
+		_, err := server.SubmitBlindedBlock(context.Background(), blockReq)
+		assert.NoError(t, err)
+	})
+	t.Run("Deneb", func(t *testing.T) {
+		v1alpha1Server := mock2.NewMockBeaconNodeValidatorServer(ctrl)
+		v1alpha1Server.EXPECT().ProposeBeaconBlock(gomock.Any(), gomock.Any())
+		server := &Server{
+			V1Alpha1ValidatorServer: v1alpha1Server,
+			SyncChecker:             &mockSync.Sync{IsSyncing: false},
+		}
+
+		blockReq := &ethpbv2.SignedBlindedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBlindedBeaconBlockContentsContainer_DenebContents{
+				DenebContents: &ethpbv2.SignedBlindedBeaconBlockContentsDeneb{
+					SignedBlindedBlock:        &ethpbv2.SignedBlindedBeaconBlockDeneb{},
+					SignedBlindedBlobSidecars: []*ethpbv2.SignedBlindedBlobSidecar{},
+				},
+			},
 		}
 		_, err := server.SubmitBlindedBlock(context.Background(), blockReq)
 		assert.NoError(t, err)

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

@@ -202,7 +202,7 @@ func (bs *Server) ListBlockHeaders(ctx context.Context, req *ethpbv1.BlockHeader
 // response (20X) only indicates that the broadcast has been successful. The beacon node is expected to integrate the
 // new block into its state, and therefore validate the block internally, however blocks which fail the validation are
 // still broadcast but a different status code is returned (202).
-func (bs *Server) SubmitBlock(ctx context.Context, req *ethpbv2.SignedBeaconBlockContainer) (*emptypb.Empty, error) {
+func (bs *Server) SubmitBlock(ctx context.Context, req *ethpbv2.SignedBeaconBlockContentsContainer) (*emptypb.Empty, error) {
 	ctx, span := trace.StartSpan(ctx, "beacon.SubmitBlock")
 	defer span.End()
 
@@ -212,20 +212,24 @@ func (bs *Server) SubmitBlock(ctx context.Context, req *ethpbv2.SignedBeaconBloc
 	}
 
 	switch blkContainer := req.Message.(type) {
-	case *ethpbv2.SignedBeaconBlockContainer_Phase0Block:
-		if err := bs.submitPhase0Block(ctx, blkContainer.Phase0Block, req.Signature); err != nil {
+	case *ethpbv2.SignedBeaconBlockContentsContainer_Phase0Block:
+		if err := bs.submitPhase0Block(ctx, blkContainer.Phase0Block.Block, blkContainer.Phase0Block.Signature); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBeaconBlockContainer_AltairBlock:
-		if err := bs.submitAltairBlock(ctx, blkContainer.AltairBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBeaconBlockContentsContainer_AltairBlock:
+		if err := bs.submitAltairBlock(ctx, blkContainer.AltairBlock.Message, blkContainer.AltairBlock.Signature); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBeaconBlockContainer_BellatrixBlock:
-		if err := bs.submitBellatrixBlock(ctx, blkContainer.BellatrixBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBeaconBlockContentsContainer_BellatrixBlock:
+		if err := bs.submitBellatrixBlock(ctx, blkContainer.BellatrixBlock.Message, blkContainer.BellatrixBlock.Signature); err != nil {
 			return nil, err
 		}
-	case *ethpbv2.SignedBeaconBlockContainer_CapellaBlock:
-		if err := bs.submitCapellaBlock(ctx, blkContainer.CapellaBlock, req.Signature); err != nil {
+	case *ethpbv2.SignedBeaconBlockContentsContainer_CapellaBlock:
+		if err := bs.submitCapellaBlock(ctx, blkContainer.CapellaBlock.Message, blkContainer.CapellaBlock.Signature); err != nil {
+			return nil, err
+		}
+	case *ethpbv2.SignedBeaconBlockContentsContainer_DenebContents:
+		if err := bs.submitDenebContents(ctx, blkContainer.DenebContents); err != nil {
 			return nil, err
 		}
 	default:
@@ -447,6 +451,17 @@ func (bs *Server) GetBlockV2(ctx context.Context, req *ethpbv2.BlockRequestV2) (
 		result.Finalized = bs.FinalizationFetcher.IsFinalized(ctx, blkRoot)
 		return result, nil
 	}
+	// ErrUnsupportedField means that we have another block type
+	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
+		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
+	}
+
+	result, err = bs.getBlockDeneb(ctx, blk)
+	if result != nil {
+		result.Finalized = bs.FinalizationFetcher.IsFinalized(ctx, blkRoot)
+		return result, nil
+	}
+
 	// ErrUnsupportedField means that we have another block type
 	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
 		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
@@ -506,6 +521,16 @@ func (bs *Server) GetBlockSSZV2(ctx context.Context, req *ethpbv2.BlockRequestV2
 		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
 	}
 
+	result, err = bs.getSSZBlockDeneb(ctx, blk)
+	if result != nil {
+		result.Finalized = bs.FinalizationFetcher.IsFinalized(ctx, blkRoot)
+		return result, nil
+	}
+	// ErrUnsupportedField means that we have another block type
+	if !errors.Is(err, consensus_types.ErrUnsupportedField) {
+		return nil, status.Errorf(codes.Internal, "Could not get signed beacon block: %v", err)
+	}
+
 	return nil, status.Errorf(codes.Internal, "Unknown block type %T", blk)
 }
 
@@ -826,6 +851,76 @@ func (bs *Server) getBlockCapella(ctx context.Context, blk interfaces.ReadOnlySi
 	}, nil
 }
 
+func (bs *Server) getBlockDeneb(ctx context.Context, blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.BlockResponseV2, error) {
+	denebBlk, err := blk.PbDenebBlock()
+	if err != nil {
+		// ErrUnsupportedGetter means that we have another block type
+		if errors.Is(err, consensus_types.ErrUnsupportedField) {
+			if blindedDenebBlk, err := blk.PbBlindedDenebBlock(); err == nil {
+				if blindedDenebBlk == nil {
+					return nil, errNilBlock
+				}
+				signedFullBlock, err := bs.ExecutionPayloadReconstructor.ReconstructFullBlock(ctx, blk)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not reconstruct full execution payload to create signed beacon block")
+				}
+				denebBlk, err = signedFullBlock.PbDenebBlock()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get signed beacon block")
+				}
+				v2Blk, err := migration.V1Alpha1BeaconBlockDenebToV2(denebBlk.Block)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not convert beacon block")
+				}
+				root, err := blk.Block().HashTreeRoot()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get block root")
+				}
+				isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not check if block is optimistic")
+				}
+				sig := blk.Signature()
+				return &ethpbv2.BlockResponseV2{
+					Version: ethpbv2.Version_DENEB,
+					Data: &ethpbv2.SignedBeaconBlockContainer{
+						Message:   &ethpbv2.SignedBeaconBlockContainer_DenebBlock{DenebBlock: v2Blk},
+						Signature: sig[:],
+					},
+					ExecutionOptimistic: isOptimistic,
+				}, nil
+			}
+			return nil, err
+		}
+		return nil, err
+	}
+
+	if denebBlk == nil {
+		return nil, errNilBlock
+	}
+	v2Blk, err := migration.V1Alpha1BeaconBlockDenebToV2(denebBlk.Block)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not convert beacon block")
+	}
+	root, err := blk.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get block root")
+	}
+	isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not check if block is optimistic")
+	}
+	sig := blk.Signature()
+	return &ethpbv2.BlockResponseV2{
+		Version: ethpbv2.Version_DENEB,
+		Data: &ethpbv2.SignedBeaconBlockContainer{
+			Message:   &ethpbv2.SignedBeaconBlockContainer_DenebBlock{DenebBlock: v2Blk},
+			Signature: sig[:],
+		},
+		ExecutionOptimistic: isOptimistic,
+	}, nil
+}
+
 func getSSZBlockPhase0(blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.SSZContainer, error) {
 	phase0Blk, err := blk.PbPhase0Block()
 	if err != nil {
@@ -1021,6 +1116,82 @@ func (bs *Server) getSSZBlockCapella(ctx context.Context, blk interfaces.ReadOnl
 	return &ethpbv2.SSZContainer{Version: ethpbv2.Version_CAPELLA, ExecutionOptimistic: isOptimistic, Data: sszData}, nil
 }
 
+func (bs *Server) getSSZBlockDeneb(ctx context.Context, blk interfaces.ReadOnlySignedBeaconBlock) (*ethpbv2.SSZContainer, error) {
+	denebBlk, err := blk.PbDenebBlock()
+	if err != nil {
+		// ErrUnsupportedGetter means that we have another block type
+		if errors.Is(err, consensus_types.ErrUnsupportedField) {
+			if blindedDenebBlk, err := blk.PbBlindedDenebBlock(); err == nil {
+				if blindedDenebBlk == nil {
+					return nil, errNilBlock
+				}
+				signedFullBlock, err := bs.ExecutionPayloadReconstructor.ReconstructFullBlock(ctx, blk)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not reconstruct full execution payload to create signed beacon block")
+				}
+				denebBlk, err = signedFullBlock.PbDenebBlock()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get signed beacon block")
+				}
+				v2Blk, err := migration.V1Alpha1BeaconBlockDenebToV2(denebBlk.Block)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not convert signed beacon block")
+				}
+				root, err := blk.Block().HashTreeRoot()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not get block root")
+				}
+				isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not check if block is optimistic")
+				}
+				sig := blk.Signature()
+				data := &ethpbv2.SignedBeaconBlockDeneb{
+					Message:   v2Blk,
+					Signature: sig[:],
+				}
+				sszData, err := data.MarshalSSZ()
+				if err != nil {
+					return nil, errors.Wrapf(err, "could not marshal block into SSZ")
+				}
+				return &ethpbv2.SSZContainer{
+					Version:             ethpbv2.Version_DENEB,
+					ExecutionOptimistic: isOptimistic,
+					Data:                sszData,
+				}, nil
+			}
+			return nil, err
+		}
+		return nil, err
+	}
+
+	if denebBlk == nil {
+		return nil, errNilBlock
+	}
+	v2Blk, err := migration.V1Alpha1BeaconBlockDenebToV2(denebBlk.Block)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not convert signed beacon block")
+	}
+	root, err := blk.Block().HashTreeRoot()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not get block root")
+	}
+	isOptimistic, err := bs.OptimisticModeFetcher.IsOptimisticForRoot(ctx, root)
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not check if block is optimistic")
+	}
+	sig := blk.Signature()
+	data := &ethpbv2.SignedBeaconBlockDeneb{
+		Message:   v2Blk,
+		Signature: sig[:],
+	}
+	sszData, err := data.MarshalSSZ()
+	if err != nil {
+		return nil, errors.Wrapf(err, "could not marshal block into SSZ")
+	}
+	return &ethpbv2.SSZContainer{Version: ethpbv2.Version_DENEB, ExecutionOptimistic: isOptimistic, Data: sszData}, nil
+}
+
 func (bs *Server) submitPhase0Block(ctx context.Context, phase0Blk *ethpbv1.BeaconBlock, sig []byte) error {
 	v1alpha1Blk, err := migration.V1ToV1Alpha1SignedBlock(&ethpbv1.SignedBeaconBlock{Block: phase0Blk, Signature: sig})
 	if err != nil {
@@ -1096,3 +1267,29 @@ func (bs *Server) submitCapellaBlock(ctx context.Context, capellaBlk *ethpbv2.Be
 	}
 	return nil
 }
+
+func (bs *Server) submitDenebContents(ctx context.Context, denebContents *ethpbv2.SignedBeaconBlockContentsDeneb) error {
+	blk, err := migration.DenebToV1Alpha1SignedBlock(&ethpbv2.SignedBeaconBlockDeneb{
+		Message:   denebContents.SignedBlock.Message,
+		Signature: denebContents.SignedBlock.Signature,
+	})
+	if err != nil {
+		return status.Errorf(codes.Internal, "Could not get block: %v", err)
+	}
+	blobs := migration.SignedBlobsToV1Alpha1SignedBlobs(denebContents.SignedBlobSidecars)
+	_, err = bs.V1Alpha1ValidatorServer.ProposeBeaconBlock(ctx, &eth.GenericSignedBeaconBlock{
+		Block: &eth.GenericSignedBeaconBlock_Deneb{
+			Deneb: &eth.SignedBeaconBlockAndBlobsDeneb{
+				Block: blk,
+				Blobs: blobs,
+			},
+		},
+	})
+	if err != nil {
+		if strings.Contains(err.Error(), validator.CouldNotDecodeBlock) {
+			return status.Error(codes.InvalidArgument, err.Error())
+		}
+		return status.Errorf(codes.Internal, "Could not propose block: %v", err)
+	}
+	return nil
+}

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

@@ -360,9 +360,8 @@ func TestServer_SubmitBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBeaconBlockContainer_Phase0Block{Phase0Block: &ethpbv1.BeaconBlock{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBeaconBlockContentsContainer_Phase0Block{Phase0Block: &ethpbv1.SignedBeaconBlock{}},
 		}
 		_, err := server.SubmitBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -375,9 +374,8 @@ func TestServer_SubmitBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBeaconBlockContainer_AltairBlock{AltairBlock: &ethpbv2.BeaconBlockAltair{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBeaconBlockContentsContainer_AltairBlock{AltairBlock: &ethpbv2.SignedBeaconBlockAltair{}},
 		}
 		_, err := server.SubmitBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -390,9 +388,8 @@ func TestServer_SubmitBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBeaconBlockContainer_BellatrixBlock{BellatrixBlock: &ethpbv2.BeaconBlockBellatrix{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBeaconBlockContentsContainer_BellatrixBlock{BellatrixBlock: &ethpbv2.SignedBeaconBlockBellatrix{}},
 		}
 		_, err := server.SubmitBlock(context.Background(), blockReq)
 		assert.NoError(t, err)
@@ -405,9 +402,8 @@ func TestServer_SubmitBlock(t *testing.T) {
 			SyncChecker:             &mockSync.Sync{IsSyncing: false},
 		}
 
-		blockReq := &ethpbv2.SignedBeaconBlockContainer{
-			Message:   &ethpbv2.SignedBeaconBlockContainer_CapellaBlock{CapellaBlock: &ethpbv2.BeaconBlockCapella{}},
-			Signature: []byte("sig"),
+		blockReq := &ethpbv2.SignedBeaconBlockContentsContainer{
+			Message: &ethpbv2.SignedBeaconBlockContentsContainer_CapellaBlock{CapellaBlock: &ethpbv2.SignedBeaconBlockCapella{}},
 		}
 		_, err := server.SubmitBlock(context.Background(), blockReq)
 		assert.NoError(t, err)

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

@@ -51,6 +51,8 @@ func TestGetSpec(t *testing.T) {
 	config.BellatrixForkEpoch = 101
 	config.CapellaForkVersion = []byte("CapellaForkVersion")
 	config.CapellaForkEpoch = 103
+	config.DenebForkVersion = []byte("DenebForkVersion")
+	config.DenebForkEpoch = 105
 	config.BLSWithdrawalPrefixByte = byte('b')
 	config.ETH1AddressWithdrawalPrefixByte = byte('c')
 	config.GenesisDelay = 24
@@ -129,6 +131,9 @@ func TestGetSpec(t *testing.T) {
 	var dam [4]byte
 	copy(dam[:], []byte{'1', '0', '0', '0'})
 	config.DomainApplicationMask = dam
+	var dbs [4]byte
+	copy(dam[:], []byte{'2', '0', '0', '0'})
+	config.DomainBlobSidecar = dbs
 
 	params.OverrideBeaconConfig(config)
 
@@ -136,7 +141,7 @@ func TestGetSpec(t *testing.T) {
 	resp, err := server.GetSpec(context.Background(), &emptypb.Empty{})
 	require.NoError(t, err)
 
-	assert.Equal(t, 108, len(resp.Data))
+	assert.Equal(t, 111, len(resp.Data))
 	for k, v := range resp.Data {
 		switch k {
 		case "CONFIG_NAME":
@@ -205,6 +210,10 @@ func TestGetSpec(t *testing.T) {
 			assert.Equal(t, "0x"+hex.EncodeToString([]byte("CapellaForkVersion")), v)
 		case "CAPELLA_FORK_EPOCH":
 			assert.Equal(t, "103", v)
+		case "DENEB_FORK_VERSION":
+			assert.Equal(t, "0x"+hex.EncodeToString([]byte("DenebForkVersion")), v)
+		case "DENEB_FORK_EPOCH":
+			assert.Equal(t, "105", v)
 		case "MIN_ANCHOR_POW_BLOCK_DIFFICULTY":
 			assert.Equal(t, "1000", v)
 		case "BLS_WITHDRAWAL_PREFIX":
@@ -269,6 +278,8 @@ func TestGetSpec(t *testing.T) {
 			assert.Equal(t, "51", v)
 		case "MAX_VOLUNTARY_EXITS":
 			assert.Equal(t, "52", v)
+		case "MAX_BLOBS_PER_BLOCK":
+			assert.Equal(t, "4", v)
 		case "TIMELY_HEAD_FLAG_INDEX":
 			assert.Equal(t, "0x35", v)
 		case "TIMELY_SOURCE_FLAG_INDEX":
@@ -335,6 +346,8 @@ func TestGetSpec(t *testing.T) {
 			assert.Equal(t, "0x0a000000", v)
 		case "DOMAIN_APPLICATION_BUILDER":
 			assert.Equal(t, "0x00000001", v)
+		case "DOMAIN_BLOB_SIDECAR":
+			assert.Equal(t, "0x00000000", v)
 		case "TRANSITION_TOTAL_DIFFICULTY":
 			assert.Equal(t, "0", v)
 		case "TERMINAL_BLOCK_HASH_ACTIVATION_EPOCH":

beacon-chain/rpc/eth/blob/BUILD.bazel

@@ -0,0 +1,47 @@
+load("@prysm//tools/go:def.bzl", "go_library", "go_test")
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "handlers.go",
+        "server.go",
+        "structs.go",
+    ],
+    importpath = "github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/blob",
+    visibility = ["//visibility:public"],
+    deps = [
+        "//beacon-chain/blockchain:go_default_library",
+        "//beacon-chain/db:go_default_library",
+        "//beacon-chain/rpc/eth/helpers:go_default_library",
+        "//beacon-chain/rpc/lookup:go_default_library",
+        "//config/fieldparams:go_default_library",
+        "//config/params:go_default_library",
+        "//consensus-types/primitives:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//network:go_default_library",
+        "//proto/eth/v2:go_default_library",
+        "//proto/migration: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",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["handlers_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//beacon-chain/blockchain/testing:go_default_library",
+        "//beacon-chain/db/testing:go_default_library",
+        "//config/fieldparams:go_default_library",
+        "//config/params:go_default_library",
+        "//encoding/bytesutil:go_default_library",
+        "//network:go_default_library",
+        "//proto/prysm/v1alpha1:go_default_library",
+        "//testing/assert:go_default_library",
+        "//testing/require:go_default_library",
+        "@com_github_ethereum_go_ethereum//common/hexutil:go_default_library",
+    ],
+)

beacon-chain/rpc/eth/blob/handlers.go

@@ -0,0 +1,213 @@
+package blob
+
+import (
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/pkg/errors"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/eth/helpers"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/rpc/lookup"
+	field_params "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/network"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/eth/v2"
+	"github.com/prysmaticlabs/prysm/v4/proto/migration"
+	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/time/slots"
+)
+
+// Blobs is an HTTP handler for Beacon API getBlobs.
+func (s *Server) Blobs(w http.ResponseWriter, r *http.Request) {
+	var sidecars []*eth.BlobSidecar
+	var root []byte
+
+	indices := parseIndices(r.URL)
+	segments := strings.Split(r.URL.Path, "/")
+	blockId := segments[len(segments)-1]
+	switch blockId {
+	case "genesis":
+		errJson := &network.DefaultErrorJson{
+			Message: "blobs are not supported for Phase 0 fork",
+			Code:    http.StatusBadRequest,
+		}
+		network.WriteError(w, errJson)
+		return
+	case "head":
+		var err error
+		root, err = s.ChainInfoFetcher.HeadRoot(r.Context())
+		if err != nil {
+			errJson := &network.DefaultErrorJson{
+				Message: errors.Wrapf(err, "could not retrieve head root").Error(),
+				Code:    http.StatusInternalServerError,
+			}
+			network.WriteError(w, errJson)
+			return
+		}
+	case "finalized":
+		fcp := s.ChainInfoFetcher.FinalizedCheckpt()
+		if fcp == nil {
+			errJson := &network.DefaultErrorJson{
+				Message: "received nil finalized checkpoint",
+				Code:    http.StatusInternalServerError,
+			}
+			network.WriteError(w, errJson)
+			return
+		}
+		root = fcp.Root
+	case "justified":
+		jcp := s.ChainInfoFetcher.CurrentJustifiedCheckpt()
+		if jcp == nil {
+			errJson := &network.DefaultErrorJson{
+				Message: "received nil justified checkpoint",
+				Code:    http.StatusInternalServerError,
+			}
+			network.WriteError(w, errJson)
+			return
+		}
+		root = jcp.Root
+	default:
+		if bytesutil.IsHex([]byte(blockId)) {
+			var err error
+			root, err = hexutil.Decode(blockId)
+			if err != nil {
+				errJson := &network.DefaultErrorJson{
+					Message: errors.Wrap(err, "could not decode block ID into hex").Error(),
+					Code:    http.StatusInternalServerError,
+				}
+				network.WriteError(w, errJson)
+				return
+			}
+		} else {
+			slot, err := strconv.ParseUint(blockId, 10, 64)
+			if err != nil {
+				errJson := &network.DefaultErrorJson{
+					Message: lookup.NewBlockIdParseError(err).Error(),
+					Code:    http.StatusBadRequest,
+				}
+				network.WriteError(w, errJson)
+				return
+			}
+			denebStart, err := slots.EpochStart(params.BeaconConfig().DenebForkEpoch)
+			if err != nil {
+				errJson := &network.DefaultErrorJson{
+					Message: errors.Wrap(err, "could not calculate Deneb start slot").Error(),
+					Code:    http.StatusInternalServerError,
+				}
+				network.WriteError(w, errJson)
+				return
+			}
+			if primitives.Slot(slot) < denebStart {
+				errJson := &network.DefaultErrorJson{
+					Message: "blobs are not supported before Deneb fork",
+					Code:    http.StatusBadRequest,
+				}
+				network.WriteError(w, errJson)
+				return
+			}
+			sidecars, err = s.BeaconDB.BlobSidecarsBySlot(r.Context(), primitives.Slot(slot), indices...)
+			if err != nil {
+				errJson := &network.DefaultErrorJson{
+					Message: errors.Wrapf(err, "could not retrieve blobs for slot %d", slot).Error(),
+					Code:    http.StatusInternalServerError,
+				}
+				network.WriteError(w, errJson)
+				return
+			}
+			network.WriteJson(w, buildSidecardsResponse(sidecars))
+			return
+		}
+	}
+
+	var err error
+	sidecars, err = s.BeaconDB.BlobSidecarsByRoot(r.Context(), bytesutil.ToBytes32(root), indices...)
+	if err != nil {
+		errJson := &network.DefaultErrorJson{
+			Message: errors.Wrapf(err, "could not retrieve blobs for root %#x", root).Error(),
+			Code:    http.StatusInternalServerError,
+		}
+		network.WriteError(w, errJson)
+		return
+	}
+
+	ssz, err := network.SszRequested(r)
+	if err != nil {
+		errJson := &network.DefaultErrorJson{
+			Message: err.Error(),
+			Code:    http.StatusInternalServerError,
+		}
+		network.WriteError(w, errJson)
+		return
+	}
+
+	if ssz {
+		v2sidecars, err := migration.V1Alpha1BlobSidecarsToV2(sidecars)
+		if err != nil {
+			errJson := &network.DefaultErrorJson{
+				Message: err.Error(),
+				Code:    http.StatusInternalServerError,
+			}
+			network.WriteError(w, errJson)
+			return
+		}
+		sidecarResp := &ethpb.BlobSidecars{
+			Sidecars: v2sidecars,
+		}
+		sszResp, err := sidecarResp.MarshalSSZ()
+		if err != nil {
+			errJson := &network.DefaultErrorJson{
+				Message: err.Error(),
+				Code:    http.StatusInternalServerError,
+			}
+			network.WriteError(w, errJson)
+			return
+		}
+		network.WriteSsz(w, sszResp, "blob_sidecars.ssz")
+		return
+	}
+
+	network.WriteJson(w, buildSidecardsResponse(sidecars))
+}
+
+// parseIndices filters out invalid and duplicate blob indices
+func parseIndices(url *url.URL) []uint64 {
+	query := url.Query()
+	helpers.NormalizeQueryValues(query)
+	rawIndices := query["indices"]
+	indices := make([]uint64, 0, field_params.MaxBlobsPerBlock)
+loop:
+	for _, raw := range rawIndices {
+		ix, err := strconv.ParseUint(raw, 10, 64)
+		if err != nil {
+			continue
+		}
+		for i := range indices {
+			if ix == indices[i] || ix >= field_params.MaxBlobsPerBlock {
+				continue loop
+			}
+		}
+		indices = append(indices, ix)
+	}
+	return indices
+}
+
+func buildSidecardsResponse(sidecars []*eth.BlobSidecar) *SidecarsResponse {
+	resp := &SidecarsResponse{Data: make([]*Sidecar, len(sidecars))}
+	for i, sc := range sidecars {
+		resp.Data[i] = &Sidecar{
+			BlockRoot:       hexutil.Encode(sc.BlockRoot),
+			Index:           strconv.FormatUint(sc.Index, 10),
+			Slot:            strconv.FormatUint(uint64(sc.Slot), 10),
+			BlockParentRoot: hexutil.Encode(sc.BlockParentRoot),
+			ProposerIndex:   strconv.FormatUint(uint64(sc.ProposerIndex), 10),
+			Blob:            hexutil.Encode(sc.Blob),
+			KZGCommitment:   hexutil.Encode(sc.KzgCommitment),
+			KZGProof:        hexutil.Encode(sc.KzgProof),
+		}
+	}
+	return resp
+}

beacon-chain/rpc/eth/blob/handlers_test.go

@@ -0,0 +1,303 @@
+package blob
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	mockChain "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
+	testDB "github.com/prysmaticlabs/prysm/v4/beacon-chain/db/testing"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	"github.com/prysmaticlabs/prysm/v4/network"
+	eth "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/testing/assert"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+)
+
+func TestParseIndices(t *testing.T) {
+	assert.DeepEqual(t, []uint64{1, 2, 3}, parseIndices(&url.URL{RawQuery: "indices=1,2,foo,1&indices=3,1&bar=bar"}))
+}
+
+func TestBlobs(t *testing.T) {
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig().Copy()
+	cfg.DenebForkEpoch = 1
+	params.OverrideBeaconConfig(cfg)
+
+	db := testDB.SetupDB(t)
+	blockroot := bytesutil.PadTo([]byte("blockroot"), 32)
+	require.NoError(t, db.SaveBlobSidecar(context.Background(), []*eth.BlobSidecar{
+		{
+			BlockRoot:       blockroot,
+			Index:           0,
+			Slot:            123,
+			BlockParentRoot: []byte("blockparentroot"),
+			ProposerIndex:   123,
+			Blob:            []byte("blob0"),
+			KzgCommitment:   []byte("kzgcommitment0"),
+			KzgProof:        []byte("kzgproof0"),
+		},
+		{
+			BlockRoot:       blockroot,
+			Index:           1,
+			Slot:            123,
+			BlockParentRoot: []byte("blockparentroot"),
+			ProposerIndex:   123,
+			Blob:            []byte("blob1"),
+			KzgCommitment:   []byte("kzgcommitment1"),
+			KzgProof:        []byte("kzgproof1"),
+		},
+		{
+			BlockRoot:       blockroot,
+			Index:           2,
+			Slot:            123,
+			BlockParentRoot: []byte("blockparentroot"),
+			ProposerIndex:   123,
+			Blob:            []byte("blob2"),
+			KzgCommitment:   []byte("kzgcommitment2"),
+			KzgProof:        []byte("kzgproof2"),
+		},
+		{
+			BlockRoot:       blockroot,
+			Index:           3,
+			Slot:            123,
+			BlockParentRoot: []byte("blockparentroot"),
+			ProposerIndex:   123,
+			Blob:            []byte("blob3"),
+			KzgCommitment:   []byte("kzgcommitment3"),
+			KzgProof:        []byte("kzgproof3"),
+		},
+	}))
+
+	t.Run("genesis", func(t *testing.T) {
+		u := "http://foo.example/genesis"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &network.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, "blobs are not supported for Phase 0 fork", e.Message)
+	})
+	t.Run("head", func(t *testing.T) {
+		u := "http://foo.example/head"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			ChainInfoFetcher: &mockChain.ChainService{Root: blockroot},
+			BeaconDB:         db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 4, len(resp.Data))
+		sidecar := resp.Data[0]
+		require.NotNil(t, sidecar)
+		assert.Equal(t, "0x626c6f636b726f6f740000000000000000000000000000000000000000000000", sidecar.BlockRoot)
+		assert.Equal(t, "0", sidecar.Index)
+		assert.Equal(t, "123", sidecar.Slot)
+		assert.Equal(t, "0x626c6f636b706172656e74726f6f74", sidecar.BlockParentRoot)
+		assert.Equal(t, "123", sidecar.ProposerIndex)
+		assert.Equal(t, "0x626c6f6230", sidecar.Blob)
+		assert.Equal(t, "0x6b7a67636f6d6d69746d656e7430", sidecar.KZGCommitment)
+		assert.Equal(t, "0x6b7a6770726f6f6630", sidecar.KZGProof)
+		sidecar = resp.Data[1]
+		require.NotNil(t, sidecar)
+		assert.Equal(t, "0x626c6f636b726f6f740000000000000000000000000000000000000000000000", sidecar.BlockRoot)
+		assert.Equal(t, "1", sidecar.Index)
+		assert.Equal(t, "123", sidecar.Slot)
+		assert.Equal(t, "0x626c6f636b706172656e74726f6f74", sidecar.BlockParentRoot)
+		assert.Equal(t, "123", sidecar.ProposerIndex)
+		assert.Equal(t, "0x626c6f6231", sidecar.Blob)
+		assert.Equal(t, "0x6b7a67636f6d6d69746d656e7431", sidecar.KZGCommitment)
+		assert.Equal(t, "0x6b7a6770726f6f6631", sidecar.KZGProof)
+		sidecar = resp.Data[2]
+		require.NotNil(t, sidecar)
+		assert.Equal(t, "0x626c6f636b726f6f740000000000000000000000000000000000000000000000", sidecar.BlockRoot)
+		assert.Equal(t, "2", sidecar.Index)
+		assert.Equal(t, "123", sidecar.Slot)
+		assert.Equal(t, "0x626c6f636b706172656e74726f6f74", sidecar.BlockParentRoot)
+		assert.Equal(t, "123", sidecar.ProposerIndex)
+		assert.Equal(t, "0x626c6f6232", sidecar.Blob)
+		assert.Equal(t, "0x6b7a67636f6d6d69746d656e7432", sidecar.KZGCommitment)
+		assert.Equal(t, "0x6b7a6770726f6f6632", sidecar.KZGProof)
+		sidecar = resp.Data[3]
+		require.NotNil(t, sidecar)
+		assert.Equal(t, "0x626c6f636b726f6f740000000000000000000000000000000000000000000000", sidecar.BlockRoot)
+		assert.Equal(t, "3", sidecar.Index)
+		assert.Equal(t, "123", sidecar.Slot)
+		assert.Equal(t, "0x626c6f636b706172656e74726f6f74", sidecar.BlockParentRoot)
+		assert.Equal(t, "123", sidecar.ProposerIndex)
+		assert.Equal(t, "0x626c6f6233", sidecar.Blob)
+		assert.Equal(t, "0x6b7a67636f6d6d69746d656e7433", sidecar.KZGCommitment)
+		assert.Equal(t, "0x6b7a6770726f6f6633", sidecar.KZGProof)
+	})
+	t.Run("finalized", func(t *testing.T) {
+		u := "http://foo.example/finalized"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			ChainInfoFetcher: &mockChain.ChainService{FinalizedCheckPoint: &eth.Checkpoint{Root: blockroot}},
+			BeaconDB:         db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 4, len(resp.Data))
+	})
+	t.Run("justified", func(t *testing.T) {
+		u := "http://foo.example/justified"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			ChainInfoFetcher: &mockChain.ChainService{CurrentJustifiedCheckPoint: &eth.Checkpoint{Root: blockroot}},
+			BeaconDB:         db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 4, len(resp.Data))
+	})
+	t.Run("root", func(t *testing.T) {
+		u := "http://foo.example/" + hexutil.Encode(blockroot)
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			BeaconDB: db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 4, len(resp.Data))
+	})
+	t.Run("slot", func(t *testing.T) {
+		u := "http://foo.example/123"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			BeaconDB: db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 4, len(resp.Data))
+	})
+	t.Run("one blob only", func(t *testing.T) {
+		u := "http://foo.example/123?indices=2"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			BeaconDB: db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		resp := &SidecarsResponse{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), resp))
+		require.Equal(t, 1, len(resp.Data))
+		sidecar := resp.Data[0]
+		require.NotNil(t, sidecar)
+		assert.Equal(t, "0x626c6f636b726f6f740000000000000000000000000000000000000000000000", sidecar.BlockRoot)
+		assert.Equal(t, "2", sidecar.Index)
+		assert.Equal(t, "123", sidecar.Slot)
+		assert.Equal(t, "0x626c6f636b706172656e74726f6f74", sidecar.BlockParentRoot)
+		assert.Equal(t, "123", sidecar.ProposerIndex)
+		assert.Equal(t, "0x626c6f6232", sidecar.Blob)
+		assert.Equal(t, "0x6b7a67636f6d6d69746d656e7432", sidecar.KZGCommitment)
+		assert.Equal(t, "0x6b7a6770726f6f6632", sidecar.KZGProof)
+	})
+	t.Run("slot before Deneb fork", func(t *testing.T) {
+		u := "http://foo.example/31"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &network.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, "blobs are not supported before Deneb fork", e.Message)
+	})
+	t.Run("malformed block ID", func(t *testing.T) {
+		u := "http://foo.example/foo"
+		request := httptest.NewRequest("GET", u, nil)
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusBadRequest, writer.Code)
+		e := &network.DefaultErrorJson{}
+		require.NoError(t, json.Unmarshal(writer.Body.Bytes(), e))
+		assert.Equal(t, http.StatusBadRequest, e.Code)
+		assert.Equal(t, true, strings.Contains(e.Message, "could not parse block ID"))
+	})
+	t.Run("ssz", func(t *testing.T) {
+		require.NoError(t, db.SaveBlobSidecar(context.Background(), []*eth.BlobSidecar{
+			{
+				BlockRoot:       blockroot,
+				Index:           0,
+				Slot:            3,
+				BlockParentRoot: make([]byte, fieldparams.RootLength),
+				ProposerIndex:   123,
+				Blob:            make([]byte, fieldparams.BlobLength),
+				KzgCommitment:   make([]byte, fieldparams.BLSPubkeyLength),
+				KzgProof:        make([]byte, fieldparams.BLSPubkeyLength),
+			},
+		}))
+		u := "http://foo.example/finalized?indices=0"
+		request := httptest.NewRequest("GET", u, nil)
+		request.Header.Add("Accept", "application/octet-stream")
+		writer := httptest.NewRecorder()
+		writer.Body = &bytes.Buffer{}
+		s := &Server{
+			ChainInfoFetcher: &mockChain.ChainService{FinalizedCheckPoint: &eth.Checkpoint{Root: blockroot}},
+			BeaconDB:         db,
+		}
+
+		s.Blobs(writer, request)
+
+		assert.Equal(t, http.StatusOK, writer.Code)
+		assert.Equal(t, len(writer.Body.Bytes()), 131260)
+		assert.Equal(t, true, strings.HasPrefix(hexutil.Encode(writer.Body.Bytes()), "0x04000000626c6f636b726f6f7400000000000000000000000000000000000000000000000000000000000000030000000000000000000000000000000000000000000000000000000000000000000000000000007b"))
+	})
+}

beacon-chain/rpc/eth/blob/server.go

@@ -0,0 +1,11 @@
+package blob
+
+import (
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain"
+	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
+)
+
+type Server struct {
+	ChainInfoFetcher blockchain.ChainInfoFetcher
+	BeaconDB         db.ReadOnlyDatabase
+}

beacon-chain/rpc/eth/blob/structs.go

@@ -0,0 +1,16 @@
+package blob
+
+type SidecarsResponse struct {
+	Data []*Sidecar `json:"data"`
+}
+
+type Sidecar struct {
+	BlockRoot       string `json:"block_root"`
+	Index           string `json:"index"`
+	Slot            string `json:"slot"`
+	BlockParentRoot string `json:"block_parent_root"`
+	ProposerIndex   string `json:"proposer_index"`
+	Blob            string `json:"blob"`
+	KZGCommitment   string `json:"kzg_commitment"`
+	KZGProof        string `json:"kzg_proof"`
+}

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

@@ -104,6 +104,18 @@ func (ds *Server) GetBeaconStateV2(ctx context.Context, req *ethpbv2.BeaconState
 			ExecutionOptimistic: isOptimistic,
 			Finalized:           isFinalized,
 		}, nil
+	case version.Deneb:
+		protoState, err := migration.BeaconStateDenebToProto(beaconSt)
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "Could not convert state to proto: %v", err)
+		}
+		return &ethpbv2.BeaconStateResponseV2{
+			Version: ethpbv2.Version_DENEB,
+			Data: &ethpbv2.BeaconStateContainer{
+				State: &ethpbv2.BeaconStateContainer_DenebState{DenebState: protoState},
+			},
+			ExecutionOptimistic: isOptimistic,
+		}, nil
 	default:
 		return nil, status.Error(codes.Internal, "Unsupported state version")
 	}
@@ -133,6 +145,8 @@ func (ds *Server) GetBeaconStateSSZV2(ctx context.Context, req *ethpbv2.BeaconSt
 		ver = ethpbv2.Version_BELLATRIX
 	case version.Capella:
 		ver = ethpbv2.Version_CAPELLA
+	case version.Deneb:
+		ver = ethpbv2.Version_DENEB
 	default:
 		return nil, status.Error(codes.Internal, "Unsupported state version")
 	}

beacon-chain/rpc/eth/debug/debug_test.go

@@ -97,6 +97,24 @@ func TestGetBeaconStateV2(t *testing.T) {
 		assert.NotNil(t, resp)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		fakeState, _ := util.DeterministicGenesisStateDeneb(t, 1)
+		server := &Server{
+			Stater: &testutil.MockStater{
+				BeaconState: fakeState,
+			},
+			HeadFetcher:           &blockchainmock.ChainService{},
+			OptimisticModeFetcher: &blockchainmock.ChainService{},
+			FinalizationFetcher:   &blockchainmock.ChainService{},
+			BeaconDB:              db,
+		}
+		resp, err := server.GetBeaconStateV2(context.Background(), &ethpbv2.BeaconStateRequestV2{
+			StateId: []byte("head"),
+		})
+		require.NoError(t, err)
+		assert.NotNil(t, resp)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 	t.Run("execution optimistic", func(t *testing.T) {
 		parentRoot := [32]byte{'a'}
 		blk := util.NewBeaconBlock()
@@ -256,6 +274,25 @@ func TestGetBeaconStateSSZV2(t *testing.T) {
 		assert.DeepEqual(t, sszState, resp.Data)
 		assert.Equal(t, ethpbv2.Version_CAPELLA, resp.Version)
 	})
+	t.Run("Deneb", func(t *testing.T) {
+		fakeState, _ := util.DeterministicGenesisStateDeneb(t, 1)
+		sszState, err := fakeState.MarshalSSZ()
+		require.NoError(t, err)
+
+		server := &Server{
+			Stater: &testutil.MockStater{
+				BeaconState: fakeState,
+			},
+		}
+		resp, err := server.GetBeaconStateSSZV2(context.Background(), &ethpbv2.BeaconStateRequestV2{
+			StateId: make([]byte, 0),
+		})
+		require.NoError(t, err)
+		assert.NotNil(t, resp)
+
+		assert.DeepEqual(t, sszState, resp.Data)
+		assert.Equal(t, ethpbv2.Version_DENEB, resp.Version)
+	})
 }
 
 func TestListForkChoiceHeadsV2(t *testing.T) {

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

@@ -317,7 +317,7 @@ func (s *Server) streamPayloadAttributes(stream ethpbservice.Events_StreamEvents
 				},
 			},
 		})
-	case version.Capella:
+	case version.Capella, version.Deneb:
 		withdrawals, err := headState.ExpectedWithdrawals()
 		if err != nil {
 			return err

beacon-chain/rpc/eth/helpers/BUILD.bazel

@@ -4,6 +4,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "error_handling.go",
+        "http.go",
         "sync.go",
         "validator_status.go",
     ],
@@ -31,6 +32,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = [
+        "http_test.go",
         "sync_test.go",
         "validator_status_test.go",
     ],

beacon-chain/rpc/eth/helpers/http.go

@@ -0,0 +1,17 @@
+package helpers
+
+import (
+	"net/url"
+	"strings"
+)
+
+// NormalizeQueryValues replaces comma-separated values with individual values
+func NormalizeQueryValues(queryParams url.Values) {
+	for key, vals := range queryParams {
+		splitVals := make([]string, 0)
+		for _, v := range vals {
+			splitVals = append(splitVals, strings.Split(v, ",")...)
+		}
+		queryParams[key] = splitVals
+	}
+}

beacon-chain/rpc/eth/helpers/http_test.go

@@ -0,0 +1,21 @@
+package helpers
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v4/testing/assert"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+)
+
+func TestNormalizeQueryValues(t *testing.T) {
+	input := make(map[string][]string)
+	input["key"] = []string{"value1", "value2,value3,value4", "value5"}
+
+	NormalizeQueryValues(input)
+	require.Equal(t, 5, len(input["key"]))
+	assert.Equal(t, "value1", input["key"][0])
+	assert.Equal(t, "value2", input["key"][1])
+	assert.Equal(t, "value3", input["key"][2])
+	assert.Equal(t, "value4", input["key"][3])
+	assert.Equal(t, "value5", input["key"][4])
+}

beacon-chain/rpc/prysm/v1alpha1/beacon/blocks.go

@@ -136,6 +136,20 @@ func convertToBlockContainer(blk interfaces.ReadOnlySignedBeaconBlock, root [32]
 			}
 			ctr.Block = &ethpb.BeaconBlockContainer_CapellaBlock{CapellaBlock: rBlk}
 		}
+	case version.Deneb:
+		if blk.IsBlinded() {
+			rBlk, err := blk.PbBlindedDenebBlock()
+			if err != nil {
+				return nil, err
+			}
+			ctr.Block = &ethpb.BeaconBlockContainer_BlindedDenebBlock{BlindedDenebBlock: rBlk}
+		} else {
+			rBlk, err := blk.PbDenebBlock()
+			if err != nil {
+				return nil, err
+			}
+			ctr.Block = &ethpb.BeaconBlockContainer_DenebBlock{DenebBlock: rBlk}
+		}
 	default:
 		return nil, errors.Errorf("block type is not recognized: %d", blk.Version())
 	}

beacon-chain/rpc/prysm/v1alpha1/validator/BUILD.bazel

@@ -15,6 +15,7 @@ go_library(
         "proposer_bellatrix.go",
         "proposer_builder.go",
         "proposer_capella.go",
+        "proposer_deneb.go",
         "proposer_deposits.go",
         "proposer_empty_block.go",
         "proposer_eth1data.go",
@@ -184,6 +185,7 @@ go_test(
         "proposer_attestations_test.go",
         "proposer_bellatrix_test.go",
         "proposer_builder_test.go",
+        "proposer_deneb_test.go",
         "proposer_deposits_test.go",
         "proposer_empty_block_test.go",
         "proposer_execution_payload_test.go",

beacon-chain/rpc/prysm/v1alpha1/validator/blocks.go

@@ -100,6 +100,17 @@ func sendVerifiedBlocks(stream ethpb.BeaconNodeValidator_StreamBlocksAltairServe
 			return nil
 		}
 		b.Block = &ethpb.StreamBlocksResponse_CapellaBlock{CapellaBlock: phBlk}
+	case version.Deneb:
+		pb, err := data.SignedBlock.Proto()
+		if err != nil {
+			return errors.Wrap(err, "could not get protobuf block")
+		}
+		phBlk, ok := pb.(*ethpb.SignedBeaconBlockDeneb)
+		if !ok {
+			log.Warn("Mismatch between version and block type, was expecting SignedBeaconBlockDeneb")
+			return nil
+		}
+		b.Block = &ethpb.StreamBlocksResponse_DenebBlock{DenebBlock: phBlk}
 	}
 
 	if err := stream.Send(b); err != nil {
@@ -149,6 +160,8 @@ func (vs *Server) sendBlocks(stream ethpb.BeaconNodeValidator_StreamBlocksAltair
 		b.Block = &ethpb.StreamBlocksResponse_BellatrixBlock{BellatrixBlock: p}
 	case *ethpb.SignedBeaconBlockCapella:
 		b.Block = &ethpb.StreamBlocksResponse_CapellaBlock{CapellaBlock: p}
+	case *ethpb.SignedBeaconBlockDeneb:
+		b.Block = &ethpb.StreamBlocksResponse_DenebBlock{DenebBlock: p}
 	default:
 		log.Errorf("Unknown block type %T", p)
 	}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer.go

@@ -19,13 +19,13 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/helpers"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db/kv"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/state"
-	"github.com/prysmaticlabs/prysm/v4/config/features"
+	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
 	"github.com/prysmaticlabs/prysm/v4/config/params"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
 	"github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
@@ -104,95 +104,6 @@ func (vs *Server) GetBeaconBlock(ctx context.Context, req *ethpb.BlockRequest) (
 	}
 	sBlk.SetProposerIndex(idx)
 
-	if features.Get().BuildBlockParallel {
-		if err := vs.BuildBlockParallel(ctx, sBlk, head); err != nil {
-			return nil, errors.Wrap(err, "could not build block in parallel")
-		}
-	} else {
-		// Set eth1 data.
-		eth1Data, err := vs.eth1DataMajorityVote(ctx, head)
-		if err != nil {
-			eth1Data = &ethpb.Eth1Data{DepositRoot: params.BeaconConfig().ZeroHash[:], BlockHash: params.BeaconConfig().ZeroHash[:]}
-			log.WithError(err).Error("Could not get eth1data")
-		}
-		sBlk.SetEth1Data(eth1Data)
-
-		// Set deposit and attestation.
-		deposits, atts, err := vs.packDepositsAndAttestations(ctx, head, eth1Data) // TODO: split attestations and deposits
-		if err != nil {
-			sBlk.SetDeposits([]*ethpb.Deposit{})
-			sBlk.SetAttestations([]*ethpb.Attestation{})
-			log.WithError(err).Error("Could not pack deposits and attestations")
-		} else {
-			sBlk.SetDeposits(deposits)
-			sBlk.SetAttestations(atts)
-		}
-
-		// Set slashings.
-		validProposerSlashings, validAttSlashings := vs.getSlashings(ctx, head)
-		sBlk.SetProposerSlashings(validProposerSlashings)
-		sBlk.SetAttesterSlashings(validAttSlashings)
-
-		// Set exits.
-		sBlk.SetVoluntaryExits(vs.getExits(head, req.Slot))
-
-		// Set sync aggregate. New in Altair.
-		vs.setSyncAggregate(ctx, sBlk)
-
-		// Get local and builder (if enabled) payloads. Set execution data. New in Bellatrix.
-		localPayload, err := vs.getLocalPayload(ctx, sBlk.Block(), head)
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "Could not get local payload: %v", err)
-		}
-		builderPayload, err := vs.getBuilderPayload(ctx, sBlk.Block().Slot(), sBlk.Block().ProposerIndex())
-		if err != nil {
-			builderGetPayloadMissCount.Inc()
-			log.WithError(err).Error("Could not get builder payload")
-		}
-		if err := setExecutionData(ctx, sBlk, localPayload, builderPayload); err != nil {
-			return nil, status.Errorf(codes.Internal, "Could not set execution data: %v", err)
-		}
-
-		// Set bls to execution change. New in Capella.
-		vs.setBlsToExecData(sBlk, head)
-	}
-
-	sr, err := vs.computeStateRoot(ctx, sBlk)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "Could not compute state root: %v", err)
-	}
-	sBlk.SetStateRoot(sr)
-
-	log.WithFields(logrus.Fields{
-		"slot":               req.Slot,
-		"sinceSlotStartTime": time.Since(t),
-		"validator":          sBlk.Block().ProposerIndex(),
-	}).Info("Finished building block")
-
-	pb, err := sBlk.Block().Proto()
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "Could not convert block to proto: %v", err)
-	}
-	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().CapellaForkEpoch {
-		if sBlk.IsBlinded() {
-			return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_BlindedCapella{BlindedCapella: pb.(*ethpb.BlindedBeaconBlockCapella)}}, nil
-		}
-		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Capella{Capella: pb.(*ethpb.BeaconBlockCapella)}}, nil
-	}
-	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().BellatrixForkEpoch {
-		if sBlk.IsBlinded() {
-			return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_BlindedBellatrix{BlindedBellatrix: pb.(*ethpb.BlindedBeaconBlockBellatrix)}}, nil
-		}
-		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Bellatrix{Bellatrix: pb.(*ethpb.BeaconBlockBellatrix)}}, nil
-	}
-	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().AltairForkEpoch {
-		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Altair{Altair: pb.(*ethpb.BeaconBlockAltair)}}, nil
-	}
-	return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Phase0{Phase0: pb.(*ethpb.BeaconBlock)}}, nil
-}
-
-func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.SignedBeaconBlock, head state.BeaconState) error {
-	// Build consensus fields in background
 	var wg sync.WaitGroup
 	wg.Add(1)
 	go func() {
@@ -232,24 +143,86 @@ func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.Signed
 		vs.setBlsToExecData(sBlk, head)
 	}()
 
-	localPayload, err := vs.getLocalPayload(ctx, sBlk.Block(), head)
+	localPayload, blobsBundle, err := vs.getLocalPayloadAndBlobs(ctx, sBlk.Block(), head)
 	if err != nil {
-		return status.Errorf(codes.Internal, "Could not get local payload: %v", err)
+		return nil, status.Errorf(codes.Internal, "Could not get local payload: %v", err)
 	}
 
-	builderPayload, err := vs.getBuilderPayload(ctx, sBlk.Block().Slot(), sBlk.Block().ProposerIndex())
+	builderPayload, blindBlobsBundle, err := vs.getBuilderPayloadAndBlobs(ctx, sBlk.Block().Slot(), sBlk.Block().ProposerIndex())
 	if err != nil {
 		builderGetPayloadMissCount.Inc()
 		log.WithError(err).Error("Could not get builder payload")
 	}
 
 	if err := setExecutionData(ctx, sBlk, localPayload, builderPayload); err != nil {
-		return status.Errorf(codes.Internal, "Could not set execution data: %v", err)
+		return nil, status.Errorf(codes.Internal, "Could not set execution data: %v", err)
+	}
+
+	if err := setKzgCommitments(sBlk, blobsBundle, blindBlobsBundle); err != nil {
+		return nil, status.Errorf(codes.Internal, "Could not set kzg commitment: %v", err)
 	}
 
 	wg.Wait() // Wait until block is built via consensus and execution fields.
 
-	return nil
+	sr, err := vs.computeStateRoot(ctx, sBlk)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "Could not compute state root: %v", err)
+	}
+	sBlk.SetStateRoot(sr)
+
+	log.WithFields(logrus.Fields{
+		"slot":               req.Slot,
+		"sinceSlotStartTime": time.Since(t),
+		"validator":          sBlk.Block().ProposerIndex(),
+		"genesisTime":        vs.TimeFetcher.GenesisTime(),
+		"genesisTimeState":   head.GenesisTime(),
+		"denebForkEpoch":     params.BeaconConfig().DenebForkEpoch,
+	}).Info("Finished building block")
+
+	pb, err := sBlk.Block().Proto()
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "Could not convert block to proto: %v", err)
+	}
+	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().DenebForkEpoch {
+		if sBlk.IsBlinded() {
+			scs, err := blindBlobsBundleToSidecars(blindBlobsBundle, sBlk.Block())
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "Could not convert blind blobs bundle to sidecar: %v", err)
+			}
+			blockAndBlobs := &ethpb.BlindedBeaconBlockAndBlobsDeneb{
+				Block: pb.(*ethpb.BlindedBeaconBlockDeneb),
+				Blobs: scs,
+			}
+			return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_BlindedDeneb{BlindedDeneb: blockAndBlobs}}, nil
+		}
+
+		scs, err := blobsBundleToSidecars(blobsBundle, sBlk.Block())
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "Could not convert blobs bundle to sidecar: %v", err)
+		}
+		blockAndBlobs := &ethpb.BeaconBlockAndBlobsDeneb{
+			Block: pb.(*ethpb.BeaconBlockDeneb),
+			Blobs: scs,
+		}
+		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Deneb{Deneb: blockAndBlobs}}, nil
+	}
+
+	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().CapellaForkEpoch {
+		if sBlk.IsBlinded() {
+			return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_BlindedCapella{BlindedCapella: pb.(*ethpb.BlindedBeaconBlockCapella)}}, nil
+		}
+		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Capella{Capella: pb.(*ethpb.BeaconBlockCapella)}}, nil
+	}
+	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().BellatrixForkEpoch {
+		if sBlk.IsBlinded() {
+			return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_BlindedBellatrix{BlindedBellatrix: pb.(*ethpb.BlindedBeaconBlockBellatrix)}}, nil
+		}
+		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Bellatrix{Bellatrix: pb.(*ethpb.BeaconBlockBellatrix)}}, nil
+	}
+	if slots.ToEpoch(req.Slot) >= params.BeaconConfig().AltairForkEpoch {
+		return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Altair{Altair: pb.(*ethpb.BeaconBlockAltair)}}, nil
+	}
+	return &ethpb.GenericBeaconBlock{Block: &ethpb.GenericBeaconBlock_Phase0{Phase0: pb.(*ethpb.BeaconBlock)}}, nil
 }
 
 // ProposeBeaconBlock is called by a proposer during its assigned slot to create a block in an attempt
@@ -257,11 +230,96 @@ func (vs *Server) BuildBlockParallel(ctx context.Context, sBlk interfaces.Signed
 func (vs *Server) ProposeBeaconBlock(ctx context.Context, req *ethpb.GenericSignedBeaconBlock) (*ethpb.ProposeResponse, error) {
 	ctx, span := trace.StartSpan(ctx, "ProposerServer.ProposeBeaconBlock")
 	defer span.End()
+
 	blk, err := blocks.NewSignedBeaconBlock(req.Block)
 	if err != nil {
 		return nil, status.Errorf(codes.InvalidArgument, "%s: %v", CouldNotDecodeBlock, err)
 	}
-	return vs.proposeGenericBeaconBlock(ctx, blk)
+
+	var blindSidecars []*ethpb.SignedBlindedBlobSidecar
+	if blk.Version() >= version.Deneb && blk.IsBlinded() {
+		blindSidecars = req.GetBlindedDeneb().Blobs
+	}
+
+	unblinder, err := newUnblinder(blk, blindSidecars, vs.BlockBuilder)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not create unblinder")
+	}
+	blinded := unblinder.b.IsBlinded() //
+
+	blk, unblindedSidecars, err := unblinder.unblindBuilderBlock(ctx)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not unblind builder block")
+	}
+
+	// Broadcast the new block to the network.
+	blkPb, err := blk.Proto()
+	if err != nil {
+		return nil, errors.Wrap(err, "could not get protobuf block")
+	}
+	if err := vs.P2P.Broadcast(ctx, blkPb); err != nil {
+		return nil, fmt.Errorf("could not broadcast block: %v", err)
+	}
+
+	var scs []*ethpb.SignedBlobSidecar
+	if blk.Version() >= version.Deneb {
+		if blinded {
+			scs = unblindedSidecars // Use sidecars from unblinder if the block was blinded.
+		} else {
+			scs, err = extraSidecars(req) // Use sidecars from the request if the block was not blinded.
+			if err != nil {
+				return nil, errors.Wrap(err, "could not extract blobs")
+			}
+		}
+		sidecars := make([]*ethpb.BlobSidecar, len(scs))
+		for i, sc := range scs {
+			if err := vs.P2P.BroadcastBlob(ctx, sc.Message.Index, sc); err != nil {
+				log.WithError(err).Errorf("Could not broadcast blob sidecar index %d / %d", i, len(scs))
+			}
+			sidecars[i] = sc.Message
+		}
+		if len(scs) > 0 {
+			if err := vs.BeaconDB.SaveBlobSidecar(ctx, sidecars); err != nil {
+				return nil, err
+			}
+		}
+	}
+
+	root, err := blk.Block().HashTreeRoot()
+	if err != nil {
+		return nil, fmt.Errorf("could not tree hash block: %v", err)
+	}
+	log.WithFields(logrus.Fields{
+		"blockRoot": hex.EncodeToString(root[:]),
+	}).Debug("Broadcasting block")
+
+	if err := vs.BlockReceiver.ReceiveBlock(ctx, blk, root); err != nil {
+		return nil, fmt.Errorf("could not process beacon block: %v", err)
+	}
+
+	log.WithField("slot", blk.Block().Slot()).Debugf(
+		"Block proposal received via RPC")
+	vs.BlockNotifier.BlockFeed().Send(&feed.Event{
+		Type: blockfeed.ReceivedBlock,
+		Data: &blockfeed.ReceivedBlockData{SignedBlock: blk},
+	})
+
+	return &ethpb.ProposeResponse{
+		BlockRoot: root[:],
+	}, nil
+}
+
+// extraSidecars extracts the sidecars from the request.
+// return error if there are too many sidecars.
+func extraSidecars(req *ethpb.GenericSignedBeaconBlock) ([]*ethpb.SignedBlobSidecar, error) {
+	b, ok := req.GetBlock().(*ethpb.GenericSignedBeaconBlock_Deneb)
+	if !ok {
+		return nil, errors.New("Could not cast block to Deneb")
+	}
+	if len(b.Deneb.Blobs) > fieldparams.MaxBlobsPerBlock {
+		return nil, fmt.Errorf("too many blobs in block: %d", len(b.Deneb.Blobs))
+	}
+	return b.Deneb.Blobs, nil
 }
 
 // PrepareBeaconProposer caches and updates the fee recipient for the given proposer.
@@ -343,52 +401,6 @@ func (vs *Server) GetFeeRecipientByPubKey(ctx context.Context, request *ethpb.Fe
 	}, nil
 }
 
-func (vs *Server) proposeGenericBeaconBlock(ctx context.Context, blk interfaces.SignedBeaconBlock) (*ethpb.ProposeResponse, error) {
-	ctx, span := trace.StartSpan(ctx, "ProposerServer.proposeGenericBeaconBlock")
-	defer span.End()
-
-	unblinder, err := newUnblinder(blk, vs.BlockBuilder)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not create unblinder")
-	}
-	blk, err = unblinder.unblindBuilderBlock(ctx)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not unblind builder block")
-	}
-
-	// Broadcast the new block to the network.
-	blkPb, err := blk.Proto()
-	if err != nil {
-		return nil, errors.Wrap(err, "could not get protobuf block")
-	}
-	if err := vs.P2P.Broadcast(ctx, blkPb); err != nil {
-		return nil, fmt.Errorf("could not broadcast block: %v", err)
-	}
-	root, err := blk.Block().HashTreeRoot()
-	if err != nil {
-		return nil, fmt.Errorf("could not tree hash block: %v", err)
-	}
-
-	log.WithFields(logrus.Fields{
-		"blockRoot": hex.EncodeToString(root[:]),
-	}).Debug("Broadcasting block")
-
-	if err := vs.BlockReceiver.ReceiveBlock(ctx, blk, root); err != nil {
-		return nil, fmt.Errorf("could not process beacon block: %v", err)
-	}
-
-	log.WithField("slot", blk.Block().Slot()).Debugf(
-		"Block proposal received via RPC")
-	vs.BlockNotifier.BlockFeed().Send(&feed.Event{
-		Type: blockfeed.ReceivedBlock,
-		Data: &blockfeed.ReceivedBlockData{SignedBlock: blk},
-	})
-
-	return &ethpb.ProposeResponse{
-		BlockRoot: root[:],
-	}, nil
-}
-
 // computeStateRoot computes the state root after a block has been processed through a state transition and
 // returns it to the validator client.
 func (vs *Server) computeStateRoot(ctx context.Context, block interfaces.ReadOnlySignedBeaconBlock) ([]byte, error) {

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go

@@ -20,6 +20,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/encoding/ssz"
 	"github.com/prysmaticlabs/prysm/v4/monitoring/tracing"
 	"github.com/prysmaticlabs/prysm/v4/network/forks"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
 	"github.com/prysmaticlabs/prysm/v4/runtime/version"
 	"github.com/prysmaticlabs/prysm/v4/time/slots"
 	"github.com/sirupsen/logrus"
@@ -123,26 +124,26 @@ func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, loc
 
 // This function retrieves the payload header given the slot number and the validator index.
 // It's a no-op if the latest head block is not versioned bellatrix.
-func (vs *Server) getPayloadHeaderFromBuilder(ctx context.Context, slot primitives.Slot, idx primitives.ValidatorIndex) (interfaces.ExecutionData, error) {
+func (vs *Server) getPayloadHeaderFromBuilder(ctx context.Context, slot primitives.Slot, idx primitives.ValidatorIndex) (interfaces.ExecutionData, *enginev1.BlindedBlobsBundle, error) {
 	ctx, span := trace.StartSpan(ctx, "ProposerServer.getPayloadHeaderFromBuilder")
 	defer span.End()
 
 	if slots.ToEpoch(slot) < params.BeaconConfig().BellatrixForkEpoch {
-		return nil, errors.New("can't get payload header from builder before bellatrix epoch")
+		return nil, nil, errors.New("can't get payload header from builder before bellatrix epoch")
 	}
 
 	b, err := vs.HeadFetcher.HeadBlock(ctx)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	h, err := b.Block().Body().Execution()
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to get execution header")
+		return nil, nil, errors.Wrap(err, "failed to get execution header")
 	}
 	pk, err := vs.HeadFetcher.HeadValidatorIndexToPublicKey(ctx, idx)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	ctx, cancel := context.WithTimeout(ctx, blockBuilderTimeout)
@@ -150,62 +151,71 @@ func (vs *Server) getPayloadHeaderFromBuilder(ctx context.Context, slot primitiv
 
 	signedBid, err := vs.BlockBuilder.GetHeader(ctx, slot, bytesutil.ToBytes32(h.BlockHash()), pk)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	if signedBid.IsNil() {
-		return nil, errors.New("builder returned nil bid")
+		return nil, nil, errors.New("builder returned nil bid")
 	}
 	fork, err := forks.Fork(slots.ToEpoch(slot))
 	if err != nil {
-		return nil, errors.Wrap(err, "unable to get fork information")
+		return nil, nil, errors.Wrap(err, "unable to get fork information")
 	}
 	forkName, ok := params.BeaconConfig().ForkVersionNames[bytesutil.ToBytes4(fork.CurrentVersion)]
 	if !ok {
-		return nil, errors.New("unable to find current fork in schedule")
+		return nil, nil, errors.New("unable to find current fork in schedule")
 	}
 	if !strings.EqualFold(version.String(signedBid.Version()), forkName) {
-		return nil, fmt.Errorf("builder bid response version: %d is different from head block version: %d for epoch %d", signedBid.Version(), b.Version(), slots.ToEpoch(slot))
+		return nil, nil, fmt.Errorf("builder bid response version: %d is different from head block version: %d for epoch %d", signedBid.Version(), b.Version(), slots.ToEpoch(slot))
 	}
 
 	bid, err := signedBid.Message()
 	if err != nil {
-		return nil, errors.Wrap(err, "could not get bid")
+		return nil, nil, errors.Wrap(err, "could not get bid")
 	}
 	if bid.IsNil() {
-		return nil, errors.New("builder returned nil bid")
+		return nil, nil, errors.New("builder returned nil bid")
 	}
 
 	v := bytesutil.LittleEndianBytesToBigInt(bid.Value())
 	if v.String() == "0" {
-		return nil, errors.New("builder returned header with 0 bid amount")
+		return nil, nil, errors.New("builder returned header with 0 bid amount")
 	}
 
 	header, err := bid.Header()
 	if err != nil {
-		return nil, errors.Wrap(err, "could not get bid header")
+		return nil, nil, errors.Wrap(err, "could not get bid header")
 	}
 	txRoot, err := header.TransactionsRoot()
 	if err != nil {
-		return nil, errors.Wrap(err, "could not get transaction root")
+		return nil, nil, errors.Wrap(err, "could not get transaction root")
 	}
 	if bytesutil.ToBytes32(txRoot) == emptyTransactionsRoot {
-		return nil, errors.New("builder returned header with an empty tx root")
+		return nil, nil, errors.New("builder returned header with an empty tx root")
 	}
 
 	if !bytes.Equal(header.ParentHash(), h.BlockHash()) {
-		return nil, fmt.Errorf("incorrect parent hash %#x != %#x", header.ParentHash(), h.BlockHash())
+		return nil, nil, fmt.Errorf("incorrect parent hash %#x != %#x", header.ParentHash(), h.BlockHash())
 	}
 
 	t, err := slots.ToTime(uint64(vs.TimeFetcher.GenesisTime().Unix()), slot)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	if header.Timestamp() != uint64(t.Unix()) {
-		return nil, fmt.Errorf("incorrect timestamp %d != %d", header.Timestamp(), uint64(t.Unix()))
+		return nil, nil, fmt.Errorf("incorrect timestamp %d != %d", header.Timestamp(), uint64(t.Unix()))
 	}
 
 	if err := validateBuilderSignature(signedBid); err != nil {
-		return nil, errors.Wrap(err, "could not validate builder signature")
+		return nil, nil, errors.Wrap(err, "could not validate builder signature")
+	}
+
+	var bundle *enginev1.BlindedBlobsBundle
+	if bid.Version() >= version.Deneb {
+		bundle, err = bid.BlindedBlobsBundle()
+		if err != nil {
+			return nil, nil, errors.Wrap(err, "could not get blinded blobs bundle")
+		}
+		log.WithField("blindBlobCount", len(bundle.BlobRoots))
 	}
 
 	log.WithFields(logrus.Fields{
@@ -223,7 +233,7 @@ func (vs *Server) getPayloadHeaderFromBuilder(ctx context.Context, slot primitiv
 		trace.StringAttribute("blockHash", fmt.Sprintf("%#x", header.BlockHash())),
 	)
 
-	return header, nil
+	return header, bundle, nil
 }
 
 // Validates builder signature and returns an error if the signature is invalid.

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go

@@ -78,9 +78,9 @@ func TestServer_setExecutionData(t *testing.T) {
 		blk, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockCapella())
 		require.NoError(t, err)
 		b := blk.Block()
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
@@ -137,9 +137,9 @@ func TestServer_setExecutionData(t *testing.T) {
 		vs.HeadFetcher = chain
 		b := blk.Block()
 
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
@@ -199,9 +199,9 @@ func TestServer_setExecutionData(t *testing.T) {
 		vs.HeadFetcher = chain
 
 		b := blk.Block()
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
@@ -213,9 +213,9 @@ func TestServer_setExecutionData(t *testing.T) {
 		require.NoError(t, err)
 		vs.ExecutionEngineCaller = &powtesting.EngineClient{PayloadIDBytes: id, ExecutionPayloadCapella: &v1.ExecutionPayloadCapella{BlockNumber: 3}, BlockValue: 2}
 		b := blk.Block()
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
@@ -233,9 +233,9 @@ func TestServer_setExecutionData(t *testing.T) {
 		require.NoError(t, err)
 		vs.ExecutionEngineCaller = &powtesting.EngineClient{PayloadIDBytes: id, ExecutionPayloadCapella: &v1.ExecutionPayloadCapella{BlockNumber: 3}, BlockValue: 1}
 		b := blk.Block()
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.NoError(t, err)
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
@@ -254,15 +254,117 @@ func TestServer_setExecutionData(t *testing.T) {
 		}
 		vs.ExecutionEngineCaller = &powtesting.EngineClient{PayloadIDBytes: id, ExecutionPayloadCapella: &v1.ExecutionPayloadCapella{BlockNumber: 4}, BlockValue: 0}
 		b := blk.Block()
-		localPayload, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		localPayload, _, err := vs.getLocalPayloadAndBlobs(ctx, b, capellaTransitionState)
 		require.NoError(t, err)
-		builderPayload, err := vs.getBuilderPayload(ctx, b.Slot(), b.ProposerIndex())
+		builderPayload, _, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
 		require.ErrorIs(t, consensus_types.ErrNilObjectWrapped, err) // Builder returns fault. Use local block
 		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload))
 		e, err := blk.Block().Body().Execution()
 		require.NoError(t, err)
 		require.Equal(t, uint64(4), e.BlockNumber()) // Local block
 	})
+	t.Run("Can get local payload and blobs Deneb", func(t *testing.T) {
+		cfg := params.BeaconConfig().Copy()
+		cfg.DenebForkEpoch = 0
+		params.OverrideBeaconConfig(cfg)
+		params.SetupTestConfigCleanup(t)
+
+		blk, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+		require.NoError(t, err)
+		vs.BlockBuilder = &builderTest.MockBuilderService{
+			HasConfigured: false,
+		}
+		blobsBundle := &v1.BlobsBundle{
+			KzgCommitments: [][]byte{{1, 2, 3}},
+			Proofs:         [][]byte{{4, 5, 6}},
+			Blobs:          [][]byte{{7, 8, 9}},
+		}
+		vs.ExecutionEngineCaller = &powtesting.EngineClient{
+			PayloadIDBytes:        id,
+			BlobsBundle:           blobsBundle,
+			ExecutionPayloadDeneb: &v1.ExecutionPayloadDeneb{BlockNumber: 4},
+			BlockValue:            0}
+		blk.SetSlot(primitives.Slot(params.BeaconConfig().DenebForkEpoch) * params.BeaconConfig().SlotsPerEpoch)
+		localPayload, bb, err := vs.getLocalPayloadAndBlobs(ctx, blk.Block(), capellaTransitionState)
+		require.NoError(t, err)
+		require.Equal(t, uint64(4), localPayload.BlockNumber())
+		require.DeepEqual(t, bb, blobsBundle)
+	})
+	t.Run("Can get builder payload and blobs in Deneb", func(t *testing.T) {
+		cfg := params.BeaconConfig().Copy()
+		cfg.DenebForkEpoch = 0
+		params.OverrideBeaconConfig(cfg)
+		params.SetupTestConfigCleanup(t)
+
+		blk, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+		require.NoError(t, err)
+		ti, err := slots.ToTime(uint64(time.Now().Unix()), 0)
+		require.NoError(t, err)
+		sk, err := bls.RandKey()
+		require.NoError(t, err)
+		wr, err := ssz.WithdrawalSliceRoot(withdrawals, fieldparams.MaxWithdrawalsPerPayload)
+		require.NoError(t, err)
+		builderValue := bytesutil.ReverseByteOrder(big.NewInt(1e9).Bytes())
+
+		bid := &ethpb.BuilderBidDeneb{
+			Header: &v1.ExecutionPayloadHeaderDeneb{
+				FeeRecipient:     make([]byte, fieldparams.FeeRecipientLength),
+				StateRoot:        make([]byte, fieldparams.RootLength),
+				ReceiptsRoot:     make([]byte, fieldparams.RootLength),
+				LogsBloom:        make([]byte, fieldparams.LogsBloomLength),
+				PrevRandao:       make([]byte, fieldparams.RootLength),
+				BaseFeePerGas:    make([]byte, fieldparams.RootLength),
+				BlockHash:        make([]byte, fieldparams.RootLength),
+				TransactionsRoot: bytesutil.PadTo([]byte{1}, fieldparams.RootLength),
+				ParentHash:       params.BeaconConfig().ZeroHash[:],
+				Timestamp:        uint64(ti.Unix()),
+				BlockNumber:      2,
+				WithdrawalsRoot:  wr[:],
+				DataGasUsed:      123,
+				ExcessDataGas:    456,
+			},
+			Pubkey: sk.PublicKey().Marshal(),
+			Value:  bytesutil.PadTo(builderValue, 32),
+			BlindedBlobsBundle: &v1.BlindedBlobsBundle{
+				KzgCommitments: [][]byte{bytesutil.PadTo([]byte{1}, fieldparams.BLSPubkeyLength), bytesutil.PadTo([]byte{4}, fieldparams.BLSPubkeyLength)},
+				Proofs:         [][]byte{bytesutil.PadTo([]byte{2}, fieldparams.BLSPubkeyLength), bytesutil.PadTo([]byte{5}, fieldparams.BLSPubkeyLength)},
+				BlobRoots:      [][]byte{bytesutil.PadTo([]byte{3}, fieldparams.RootLength), bytesutil.PadTo([]byte{6}, fieldparams.RootLength)},
+			},
+		}
+
+		d := params.BeaconConfig().DomainApplicationBuilder
+		domain, err := signing.ComputeDomain(d, nil, nil)
+		require.NoError(t, err)
+		sr, err := signing.ComputeSigningRoot(bid, domain)
+		require.NoError(t, err)
+		sBid := &ethpb.SignedBuilderBidDeneb{
+			Message:   bid,
+			Signature: sk.Sign(sr[:]).Marshal(),
+		}
+		vs.BlockBuilder = &builderTest.MockBuilderService{
+			BidDeneb:      sBid,
+			HasConfigured: true,
+			Cfg:           &builderTest.Config{BeaconDB: beaconDB},
+		}
+		require.NoError(t, beaconDB.SaveRegistrationsByValidatorIDs(ctx, []primitives.ValidatorIndex{blk.Block().ProposerIndex()},
+			[]*ethpb.ValidatorRegistrationV1{{FeeRecipient: make([]byte, fieldparams.FeeRecipientLength), Timestamp: uint64(time.Now().Unix()), Pubkey: make([]byte, fieldparams.BLSPubkeyLength)}}))
+
+		wb, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+		require.NoError(t, err)
+		chain := &blockchainTest.ChainService{ForkChoiceStore: doublylinkedtree.New(), Genesis: time.Now(), Block: wb}
+		vs.ForkFetcher = chain
+		vs.ForkchoiceFetcher.SetForkChoiceGenesisTime(uint64(time.Now().Unix()))
+		vs.TimeFetcher = chain
+		vs.HeadFetcher = chain
+
+		require.NoError(t, err)
+		blk.SetSlot(primitives.Slot(params.BeaconConfig().DenebForkEpoch) * params.BeaconConfig().SlotsPerEpoch)
+		require.NoError(t, err)
+		builderPayload, bb, err := vs.getBuilderPayloadAndBlobs(ctx, blk.Block().Slot(), blk.Block().ProposerIndex())
+		require.NoError(t, err)
+		require.Equal(t, bid.Header.BlockNumber, builderPayload.BlockNumber()) // header should be the same from block
+		require.DeepEqual(t, bb, bid.BlindedBlobsBundle)                       // blind blobs should be the same from block
+	})
 }
 func TestServer_getPayloadHeader(t *testing.T) {
 	genesis := time.Now().Add(-time.Duration(params.BeaconConfig().SlotsPerEpoch) * time.Duration(params.BeaconConfig().SecondsPerSlot) * time.Second)
@@ -479,7 +581,7 @@ func TestServer_getPayloadHeader(t *testing.T) {
 			}}
 			hb, err := vs.HeadFetcher.HeadBlock(context.Background())
 			require.NoError(t, err)
-			h, err := vs.getPayloadHeaderFromBuilder(context.Background(), hb.Block().Slot(), 0)
+			h, _, err := vs.getPayloadHeaderFromBuilder(context.Background(), hb.Block().Slot(), 0)
 			if tc.err != "" {
 				require.ErrorContains(t, tc.err, err)
 			} else {

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_deneb.go

@@ -0,0 +1,79 @@
+package validator
+
+import (
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/interfaces"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
+	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
+	"github.com/prysmaticlabs/prysm/v4/runtime/version"
+	"github.com/prysmaticlabs/prysm/v4/time/slots"
+)
+
+// setKzgCommitments sets the KZG commitment on the block.
+// Return early if the block version is older than deneb or block slot has not passed deneb epoch.
+// Depends on the blk is blind or not, set the KZG commitment from the corresponding bundle.
+func setKzgCommitments(blk interfaces.SignedBeaconBlock, bundle *enginev1.BlobsBundle, blindBundle *enginev1.BlindedBlobsBundle) error {
+	if blk.Version() < version.Deneb {
+		return nil
+	}
+	slot := blk.Block().Slot()
+	if slots.ToEpoch(slot) < params.BeaconConfig().DenebForkEpoch {
+		return nil
+	}
+
+	if blk.IsBlinded() {
+		return blk.SetBlobKzgCommitments(blindBundle.KzgCommitments)
+	}
+
+	return blk.SetBlobKzgCommitments(bundle.KzgCommitments)
+}
+
+// coverts a blobs bundle to a sidecar format.
+func blobsBundleToSidecars(bundle *enginev1.BlobsBundle, blk interfaces.ReadOnlyBeaconBlock) ([]*ethpb.BlobSidecar, error) {
+	r, err := blk.HashTreeRoot()
+	if err != nil {
+		return nil, err
+	}
+	pr := blk.ParentRoot()
+
+	sidecars := make([]*ethpb.BlobSidecar, len(bundle.Blobs))
+	for i := 0; i < len(bundle.Blobs); i++ {
+		sidecars[i] = &ethpb.BlobSidecar{
+			BlockRoot:       r[:],
+			Index:           uint64(i),
+			Slot:            blk.Slot(),
+			BlockParentRoot: pr[:],
+			ProposerIndex:   blk.ProposerIndex(),
+			Blob:            bundle.Blobs[i],
+			KzgCommitment:   bundle.KzgCommitments[i],
+			KzgProof:        bundle.Proofs[i],
+		}
+	}
+
+	return sidecars, nil
+}
+
+// coverts a blinds blobs bundle to a sidecar format.
+func blindBlobsBundleToSidecars(bundle *enginev1.BlindedBlobsBundle, blk interfaces.ReadOnlyBeaconBlock) ([]*ethpb.BlindedBlobSidecar, error) {
+	r, err := blk.HashTreeRoot()
+	if err != nil {
+		return nil, err
+	}
+	pr := blk.ParentRoot()
+
+	sidecars := make([]*ethpb.BlindedBlobSidecar, len(bundle.BlobRoots))
+	for i := 0; i < len(bundle.BlobRoots); i++ {
+		sidecars[i] = &ethpb.BlindedBlobSidecar{
+			BlockRoot:       r[:],
+			Index:           uint64(i),
+			Slot:            blk.Slot(),
+			BlockParentRoot: pr[:],
+			ProposerIndex:   blk.ProposerIndex(),
+			BlobRoot:        bundle.BlobRoots[i],
+			KzgCommitment:   bundle.KzgCommitments[i],
+			KzgProof:        bundle.Proofs[i],
+		}
+	}
+
+	return sidecars, nil
+}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_deneb_test.go

@@ -0,0 +1,106 @@
+package validator
+
+import (
+	"testing"
+
+	"github.com/prysmaticlabs/prysm/v4/config/params"
+	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
+	"github.com/prysmaticlabs/prysm/v4/encoding/bytesutil"
+	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
+	"github.com/prysmaticlabs/prysm/v4/testing/require"
+	"github.com/prysmaticlabs/prysm/v4/testing/util"
+)
+
+func Test_setKzgCommitments(t *testing.T) {
+	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlock())
+	require.NoError(t, err)
+	require.NoError(t, setKzgCommitments(b, nil, nil))
+	b, err = blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+	require.NoError(t, err)
+	require.NoError(t, setKzgCommitments(b, nil, nil))
+
+	cfg := params.BeaconConfig().Copy()
+	cfg.DenebForkEpoch = 0
+	params.OverrideBeaconConfig(cfg)
+
+	kcs := [][]byte{[]byte("kzg"), []byte("kzg1"), []byte("kzg2")}
+	bundle := &enginev1.BlobsBundle{KzgCommitments: kcs}
+	bkcs := [][]byte{[]byte("bkzg"), []byte("bkzg1"), []byte("bkzg2")}
+	blindBundle := &enginev1.BlindedBlobsBundle{KzgCommitments: bkcs}
+	require.NoError(t, setKzgCommitments(b, bundle, blindBundle))
+	got, err := b.Block().Body().BlobKzgCommitments()
+	require.NoError(t, err)
+	require.DeepEqual(t, got, kcs)
+
+	b, err = blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+	require.NoError(t, err)
+	b.SetBlinded(true)
+	require.NoError(t, setKzgCommitments(b, bundle, blindBundle))
+	got, err = b.Block().Body().BlobKzgCommitments()
+	require.NoError(t, err)
+	require.DeepEqual(t, got, bkcs)
+}
+
+func Test_blobsBundleToSidecars(t *testing.T) {
+	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+	require.NoError(t, err)
+
+	b.SetSlot(1)
+	b.SetProposerIndex(2)
+	b.SetParentRoot(bytesutil.PadTo([]byte("parentRoot"), 32))
+
+	kcs := [][]byte{[]byte("kzg"), []byte("kzg1"), []byte("kzg2")}
+	proofs := [][]byte{[]byte("proof"), []byte("proof1"), []byte("proof2")}
+	blobs := [][]byte{[]byte("blob"), []byte("blob1"), []byte("blob2")}
+	bundle := &enginev1.BlobsBundle{KzgCommitments: kcs, Proofs: proofs, Blobs: blobs}
+
+	sidecars, err := blobsBundleToSidecars(bundle, b.Block())
+	require.NoError(t, err)
+
+	r, err := b.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.Equal(t, len(sidecars), 3)
+	for i := 0; i < len(sidecars); i++ {
+		require.DeepEqual(t, sidecars[i].BlockRoot, r[:])
+		require.Equal(t, sidecars[i].Index, uint64(i))
+		require.Equal(t, sidecars[i].Slot, b.Block().Slot())
+		pr := b.Block().ParentRoot()
+		require.DeepEqual(t, sidecars[i].BlockParentRoot, pr[:])
+		require.Equal(t, sidecars[i].ProposerIndex, b.Block().ProposerIndex())
+		require.DeepEqual(t, sidecars[i].Blob, blobs[i])
+		require.DeepEqual(t, sidecars[i].KzgProof, proofs[i])
+		require.DeepEqual(t, sidecars[i].KzgCommitment, kcs[i])
+	}
+}
+
+func Test_blindBlobsBundleToSidecars(t *testing.T) {
+	b, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockDeneb())
+	require.NoError(t, err)
+
+	b.SetSlot(1)
+	b.SetProposerIndex(2)
+	b.SetParentRoot(bytesutil.PadTo([]byte("parentRoot"), 32))
+
+	kcs := [][]byte{[]byte("kzg"), []byte("kzg1"), []byte("kzg2")}
+	proofs := [][]byte{[]byte("proof"), []byte("proof1"), []byte("proof2")}
+	blobRoots := [][]byte{[]byte("blob"), []byte("blob1"), []byte("blob2")}
+	bundle := &enginev1.BlindedBlobsBundle{KzgCommitments: kcs, Proofs: proofs, BlobRoots: blobRoots}
+
+	sidecars, err := blindBlobsBundleToSidecars(bundle, b.Block())
+	require.NoError(t, err)
+
+	r, err := b.Block().HashTreeRoot()
+	require.NoError(t, err)
+	require.Equal(t, len(sidecars), 3)
+	for i := 0; i < len(sidecars); i++ {
+		require.DeepEqual(t, sidecars[i].BlockRoot, r[:])
+		require.Equal(t, sidecars[i].Index, uint64(i))
+		require.Equal(t, sidecars[i].Slot, b.Block().Slot())
+		pr := b.Block().ParentRoot()
+		require.DeepEqual(t, sidecars[i].BlockParentRoot, pr[:])
+		require.Equal(t, sidecars[i].ProposerIndex, b.Block().ProposerIndex())
+		require.DeepEqual(t, sidecars[i].BlobRoot, blobRoots[i])
+		require.DeepEqual(t, sidecars[i].KzgProof, proofs[i])
+		require.DeepEqual(t, sidecars[i].KzgCommitment, kcs[i])
+	}
+}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_empty_block.go

@@ -30,11 +30,16 @@ func getEmptyBlock(slot primitives.Slot) (interfaces.SignedBeaconBlock, error) {
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "Could not initialize block for proposal: %v", err)
 		}
-	default:
+	case slots.ToEpoch(slot) < params.BeaconConfig().DenebForkEpoch:
 		sBlk, err = blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockCapella{Block: &ethpb.BeaconBlockCapella{Body: &ethpb.BeaconBlockBodyCapella{}}})
 		if err != nil {
 			return nil, status.Errorf(codes.Internal, "Could not initialize block for proposal: %v", err)
 		}
+	default:
+		sBlk, err = blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockDeneb{Block: &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{}}})
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "Could not initialize block for proposal: %v", err)
+		}
 	}
 	return sBlk, err
 }

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_empty_block_test.go

@@ -17,6 +17,7 @@ func Test_getEmptyBlock(t *testing.T) {
 	config.AltairForkEpoch = 1
 	config.BellatrixForkEpoch = 2
 	config.CapellaForkEpoch = 3
+	config.DenebForkEpoch = 4
 	params.OverrideBeaconConfig(config)
 
 	tests := []struct {
@@ -51,6 +52,15 @@ func Test_getEmptyBlock(t *testing.T) {
 				return b
 			},
 		},
+		{
+			name: "deneb",
+			slot: primitives.Slot(params.BeaconConfig().DenebForkEpoch) * params.BeaconConfig().SlotsPerEpoch,
+			want: func() interfaces.ReadOnlySignedBeaconBlock {
+				b, err := blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockDeneb{Block: &ethpb.BeaconBlockDeneb{Body: &ethpb.BeaconBlockBodyDeneb{}}})
+				require.NoError(t, err)
+				return b
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_execution_payload.go

@@ -41,14 +41,14 @@ var (
 	})
 )
 
-// This returns the execution payload of a given slot. The function has full awareness of pre and post merge.
-// The payload is computed given the respected time of merge.
-func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBeaconBlock, st state.BeaconState) (interfaces.ExecutionData, error) {
+// This returns the local execution payload of a given slot. The function has full awareness of pre and post merge.
+// It also returns the blobs bundle.
+func (vs *Server) getLocalPayloadAndBlobs(ctx context.Context, blk interfaces.ReadOnlyBeaconBlock, st state.BeaconState) (interfaces.ExecutionData, *enginev1.BlobsBundle, error) {
 	ctx, span := trace.StartSpan(ctx, "ProposerServer.getLocalPayload")
 	defer span.End()
 
 	if blk.Version() < version.Bellatrix {
-		return nil, nil
+		return nil, nil, nil
 	}
 
 	slot := blk.Slot()
@@ -73,21 +73,21 @@ func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBe
 				"Please refer to our documentation for instructions")
 		}
 	default:
-		return nil, errors.Wrap(err, "could not get fee recipient in db")
+		return nil, nil, errors.Wrap(err, "could not get fee recipient in db")
 	}
 
 	if ok && proposerID == vIdx && payloadId != [8]byte{} { // Payload ID is cache hit. Return the cached payload ID.
 		var pid [8]byte
 		copy(pid[:], payloadId[:])
 		payloadIDCacheHit.Inc()
-		payload, err := vs.ExecutionEngineCaller.GetPayload(ctx, pid, slot)
+		payload, blobsBundle, err := vs.ExecutionEngineCaller.GetPayload(ctx, pid, slot)
 		switch {
 		case err == nil:
 			warnIfFeeRecipientDiffers(payload, feeRecipient)
-			return payload, nil
+			return payload, blobsBundle, nil
 		case errors.Is(err, context.DeadlineExceeded):
 		default:
-			return nil, errors.Wrap(err, "could not get cached payload from execution client")
+			return nil, nil, errors.Wrap(err, "could not get cached payload from execution client")
 		}
 	}
 
@@ -95,36 +95,44 @@ func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBe
 	var hasTerminalBlock bool
 	mergeComplete, err := blocks.IsMergeTransitionComplete(st)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	t, err := slots.ToTime(st.GenesisTime(), slot)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	if mergeComplete {
 		header, err := st.LatestExecutionPayloadHeader()
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 		parentHash = header.BlockHash()
 	} else {
 		if activationEpochNotReached(slot) {
-			return consensusblocks.WrappedExecutionPayload(emptyPayload())
+			p, err := consensusblocks.WrappedExecutionPayload(emptyPayload())
+			if err != nil {
+				return nil, nil, err
+			}
+			return p, nil, nil
 		}
 		parentHash, hasTerminalBlock, err = vs.getTerminalBlockHashIfExists(ctx, uint64(t.Unix()))
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 		if !hasTerminalBlock {
-			return consensusblocks.WrappedExecutionPayload(emptyPayload())
+			p, err := consensusblocks.WrappedExecutionPayload(emptyPayload())
+			if err != nil {
+				return nil, nil, err
+			}
+			return p, nil, nil
 		}
 	}
 	payloadIDCacheMiss.Inc()
 
 	random, err := helpers.RandaoMix(st, time.CurrentEpoch(st))
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	finalizedBlockHash := [32]byte{}
@@ -142,10 +150,10 @@ func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBe
 	}
 	var attr payloadattribute.Attributer
 	switch st.Version() {
-	case version.Capella:
+	case version.Capella, version.Deneb:
 		withdrawals, err := st.ExpectedWithdrawals()
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 		attr, err = payloadattribute.New(&enginev1.PayloadAttributesV2{
 			Timestamp:             uint64(t.Unix()),
@@ -154,7 +162,7 @@ func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBe
 			Withdrawals:           withdrawals,
 		})
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 	case version.Bellatrix:
 		attr, err = payloadattribute.New(&enginev1.PayloadAttributes{
@@ -163,25 +171,25 @@ func (vs *Server) getLocalPayload(ctx context.Context, blk interfaces.ReadOnlyBe
 			SuggestedFeeRecipient: feeRecipient.Bytes(),
 		})
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 	default:
-		return nil, errors.New("unknown beacon state version")
+		return nil, nil, errors.New("unknown beacon state version")
 	}
 
 	payloadID, _, err := vs.ExecutionEngineCaller.ForkchoiceUpdated(ctx, f, attr)
 	if err != nil {
-		return nil, errors.Wrap(err, "could not prepare payload")
+		return nil, nil, errors.Wrap(err, "could not prepare payload")
 	}
 	if payloadID == nil {
-		return nil, fmt.Errorf("nil payload with block hash: %#x", parentHash)
+		return nil, nil, fmt.Errorf("nil payload with block hash: %#x", parentHash)
 	}
-	payload, err := vs.ExecutionEngineCaller.GetPayload(ctx, *payloadID, slot)
+	payload, blobsBundle, err := vs.ExecutionEngineCaller.GetPayload(ctx, *payloadID, slot)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 	warnIfFeeRecipientDiffers(payload, feeRecipient)
-	return payload, nil
+	return payload, blobsBundle, nil
 }
 
 // warnIfFeeRecipientDiffers logs a warning if the fee recipient in the included payload does not
@@ -228,22 +236,22 @@ func (vs *Server) getTerminalBlockHashIfExists(ctx context.Context, transitionTi
 	return vs.ExecutionEngineCaller.GetTerminalBlockHash(ctx, transitionTime)
 }
 
-func (vs *Server) getBuilderPayload(ctx context.Context,
+func (vs *Server) getBuilderPayloadAndBlobs(ctx context.Context,
 	slot primitives.Slot,
-	vIdx primitives.ValidatorIndex) (interfaces.ExecutionData, error) {
-	ctx, span := trace.StartSpan(ctx, "ProposerServer.getBuilderPayload")
+	vIdx primitives.ValidatorIndex) (interfaces.ExecutionData, *enginev1.BlindedBlobsBundle, error) {
+	ctx, span := trace.StartSpan(ctx, "ProposerServer.getBuilderPayloadAndBlobs")
 	defer span.End()
 
 	if slots.ToEpoch(slot) < params.BeaconConfig().BellatrixForkEpoch {
-		return nil, nil
+		return nil, nil, nil
 	}
 	canUseBuilder, err := vs.canUseBuilder(ctx, slot, vIdx)
 	if err != nil {
-		return nil, errors.Wrap(err, "failed to check if we can use the builder")
+		return nil, nil, errors.Wrap(err, "failed to check if we can use the builder")
 	}
 	span.AddAttributes(trace.BoolAttribute("canUseBuilder", canUseBuilder))
 	if !canUseBuilder {
-		return nil, nil
+		return nil, nil, nil
 	}
 
 	return vs.getPayloadHeaderFromBuilder(ctx, slot, vIdx)
@@ -292,3 +300,18 @@ func emptyPayloadCapella() *enginev1.ExecutionPayloadCapella {
 		Withdrawals:   make([]*enginev1.Withdrawal, 0),
 	}
 }
+
+func emptyPayloadDeneb() *enginev1.ExecutionPayloadDeneb {
+	return &enginev1.ExecutionPayloadDeneb{
+		ParentHash:    make([]byte, fieldparams.RootLength),
+		FeeRecipient:  make([]byte, fieldparams.FeeRecipientLength),
+		StateRoot:     make([]byte, fieldparams.RootLength),
+		ReceiptsRoot:  make([]byte, fieldparams.RootLength),
+		LogsBloom:     make([]byte, fieldparams.LogsBloomLength),
+		PrevRandao:    make([]byte, fieldparams.RootLength),
+		BaseFeePerGas: make([]byte, fieldparams.RootLength),
+		BlockHash:     make([]byte, fieldparams.RootLength),
+		Transactions:  make([][]byte, 0),
+		Withdrawals:   make([]*enginev1.Withdrawal, 0),
+	}
+}

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_execution_payload_test.go

@@ -149,7 +149,7 @@ func TestServer_getExecutionPayload(t *testing.T) {
 			blk.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
 			b, err := blocks.NewSignedBeaconBlock(blk)
 			require.NoError(t, err)
-			_, err = vs.getLocalPayload(context.Background(), b.Block(), tt.st)
+			_, _, err = vs.getLocalPayloadAndBlobs(context.Background(), b.Block(), tt.st)
 			if tt.errString != "" {
 				require.ErrorContains(t, tt.errString, err)
 			} else {
@@ -191,7 +191,7 @@ func TestServer_getExecutionPayloadContextTimeout(t *testing.T) {
 	blk.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
 	b, err := blocks.NewSignedBeaconBlock(blk)
 	require.NoError(t, err)
-	_, err = vs.getLocalPayload(context.Background(), b.Block(), nonTransitionSt)
+	_, _, err = vs.getLocalPayloadAndBlobs(context.Background(), b.Block(), nonTransitionSt)
 	require.NoError(t, err)
 }
 
@@ -243,7 +243,7 @@ func TestServer_getExecutionPayload_UnexpectedFeeRecipient(t *testing.T) {
 	blk.Block.ParentRoot = bytesutil.PadTo([]byte{}, 32)
 	b, err := blocks.NewSignedBeaconBlock(blk)
 	require.NoError(t, err)
-	gotPayload, err := vs.getLocalPayload(context.Background(), b.Block(), transitionSt)
+	gotPayload, _, err := vs.getLocalPayloadAndBlobs(context.Background(), b.Block(), transitionSt)
 	require.NoError(t, err)
 	require.NotNil(t, gotPayload)
 
@@ -255,7 +255,7 @@ func TestServer_getExecutionPayload_UnexpectedFeeRecipient(t *testing.T) {
 	payload.FeeRecipient = evilRecipientAddress[:]
 	vs.ProposerSlotIndexCache = cache.NewProposerPayloadIDsCache()
 
-	gotPayload, err = vs.getLocalPayload(context.Background(), b.Block(), transitionSt)
+	gotPayload, _, err = vs.getLocalPayloadAndBlobs(context.Background(), b.Block(), transitionSt)
 	require.NoError(t, err)
 	require.NotNil(t, gotPayload)
 

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_test.go

@@ -430,6 +430,126 @@ func TestServer_GetBeaconBlock_Capella(t *testing.T) {
 	require.DeepEqual(t, change, got.GetCapella().Body.BlsToExecutionChanges[0])
 }
 
+func TestServer_GetBeaconBlock_Deneb(t *testing.T) {
+	db := dbutil.SetupDB(t)
+	ctx := context.Background()
+	transition.SkipSlotCache.Disable()
+
+	params.SetupTestConfigCleanup(t)
+	cfg := params.BeaconConfig().Copy()
+	cfg.DenebForkEpoch = 4
+	cfg.CapellaForkEpoch = 3
+	cfg.BellatrixForkEpoch = 2
+	cfg.AltairForkEpoch = 1
+	params.OverrideBeaconConfig(cfg)
+	beaconState, privKeys := util.DeterministicGenesisState(t, 64)
+
+	stateRoot, err := beaconState.HashTreeRoot(ctx)
+	require.NoError(t, err, "Could not hash genesis state")
+
+	genesis := b.NewGenesisBlock(stateRoot[:])
+	util.SaveBlock(t, ctx, db, genesis)
+
+	parentRoot, err := genesis.Block.HashTreeRoot()
+	require.NoError(t, err, "Could not get signing root")
+	require.NoError(t, db.SaveState(ctx, beaconState, parentRoot), "Could not save genesis state")
+	require.NoError(t, db.SaveHeadBlockRoot(ctx, parentRoot), "Could not save genesis state")
+
+	denebSlot, err := slots.EpochStart(params.BeaconConfig().DenebForkEpoch)
+	require.NoError(t, err)
+
+	var scBits [fieldparams.SyncAggregateSyncCommitteeBytesLength]byte
+	blk := &ethpb.SignedBeaconBlockDeneb{
+		Block: &ethpb.BeaconBlockDeneb{
+			Slot:       denebSlot + 1,
+			ParentRoot: parentRoot[:],
+			StateRoot:  genesis.Block.StateRoot,
+			Body: &ethpb.BeaconBlockBodyDeneb{
+				RandaoReveal:  genesis.Block.Body.RandaoReveal,
+				Graffiti:      genesis.Block.Body.Graffiti,
+				Eth1Data:      genesis.Block.Body.Eth1Data,
+				SyncAggregate: &ethpb.SyncAggregate{SyncCommitteeBits: scBits[:], SyncCommitteeSignature: make([]byte, 96)},
+				ExecutionPayload: &enginev1.ExecutionPayloadDeneb{
+					ParentHash:    make([]byte, fieldparams.RootLength),
+					FeeRecipient:  make([]byte, fieldparams.FeeRecipientLength),
+					StateRoot:     make([]byte, fieldparams.RootLength),
+					ReceiptsRoot:  make([]byte, fieldparams.RootLength),
+					LogsBloom:     make([]byte, fieldparams.LogsBloomLength),
+					PrevRandao:    make([]byte, fieldparams.RootLength),
+					BaseFeePerGas: make([]byte, fieldparams.RootLength),
+					BlockHash:     make([]byte, fieldparams.RootLength),
+				},
+			},
+		},
+		Signature: genesis.Signature,
+	}
+
+	blkRoot, err := blk.Block.HashTreeRoot()
+	require.NoError(t, err)
+	require.NoError(t, err, "Could not get signing root")
+	require.NoError(t, db.SaveState(ctx, beaconState, blkRoot), "Could not save genesis state")
+	require.NoError(t, db.SaveHeadBlockRoot(ctx, blkRoot), "Could not save genesis state")
+
+	random, err := helpers.RandaoMix(beaconState, slots.ToEpoch(beaconState.Slot()))
+	require.NoError(t, err)
+	timeStamp, err := slots.ToTime(beaconState.GenesisTime(), denebSlot+1)
+	require.NoError(t, err)
+	payload := &enginev1.ExecutionPayloadDeneb{
+		ParentHash:    make([]byte, fieldparams.RootLength),
+		FeeRecipient:  make([]byte, fieldparams.FeeRecipientLength),
+		StateRoot:     make([]byte, fieldparams.RootLength),
+		ReceiptsRoot:  make([]byte, fieldparams.RootLength),
+		LogsBloom:     make([]byte, fieldparams.LogsBloomLength),
+		PrevRandao:    random,
+		BaseFeePerGas: make([]byte, fieldparams.RootLength),
+		BlockHash:     make([]byte, fieldparams.RootLength),
+		Transactions:  make([][]byte, 0),
+		ExtraData:     make([]byte, 0),
+		BlockNumber:   1,
+		GasLimit:      2,
+		GasUsed:       3,
+		Timestamp:     uint64(timeStamp.Unix()),
+		DataGasUsed:   4,
+		ExcessDataGas: 5,
+	}
+
+	kc := make([][]byte, 0)
+	kc = append(kc, bytesutil.PadTo([]byte("kc"), 48))
+	kc = append(kc, bytesutil.PadTo([]byte("kc1"), 48))
+	kc = append(kc, bytesutil.PadTo([]byte("kc2"), 48))
+	proofs := [][]byte{[]byte("proof"), []byte("proof1"), []byte("proof2")}
+	blobs := [][]byte{[]byte("blob"), []byte("blob1"), []byte("blob2")}
+	bundle := &enginev1.BlobsBundle{KzgCommitments: kc, Proofs: proofs, Blobs: blobs}
+	proposerServer := getProposerServer(db, beaconState, parentRoot[:])
+	proposerServer.ExecutionEngineCaller = &mockExecution.EngineClient{
+		PayloadIDBytes:        &enginev1.PayloadIDBytes{1},
+		ExecutionPayloadDeneb: payload,
+		BlobsBundle:           bundle,
+	}
+
+	randaoReveal, err := util.RandaoReveal(beaconState, 0, privKeys)
+	require.NoError(t, err)
+
+	graffiti := bytesutil.ToBytes32([]byte("eth2"))
+	require.NoError(t, err)
+	req := &ethpb.BlockRequest{
+		Slot:         denebSlot + 1,
+		RandaoReveal: randaoReveal,
+		Graffiti:     graffiti[:],
+	}
+
+	copiedState := beaconState.Copy()
+	copiedState, err = transition.ProcessSlots(ctx, copiedState, denebSlot+1)
+	require.NoError(t, err)
+	change, err := util.GenerateBLSToExecutionChange(copiedState, privKeys[1], 0)
+	require.NoError(t, err)
+	proposerServer.BLSChangesPool.InsertBLSToExecChange(change)
+
+	got, err := proposerServer.GetBeaconBlock(ctx, req)
+	require.NoError(t, err)
+	require.DeepEqual(t, got.GetDeneb().Block.Body.BlobKzgCommitments, kc)
+}
+
 func TestServer_GetBeaconBlock_Optimistic(t *testing.T) {
 	params.SetupTestConfigCleanup(t)
 	cfg := params.BeaconConfig().Copy()
@@ -511,6 +631,7 @@ func TestProposer_ProposeBlock_OK(t *testing.T) {
 	tests := []struct {
 		name  string
 		block func([32]byte) *ethpb.GenericSignedBeaconBlock
+		err   string
 	}{
 		{
 			name: "phase0",
@@ -558,6 +679,100 @@ func TestProposer_ProposeBlock_OK(t *testing.T) {
 				return &ethpb.GenericSignedBeaconBlock{Block: blk}
 			},
 		},
+		{
+			name: "bellatrix",
+			block: func(parent [32]byte) *ethpb.GenericSignedBeaconBlock {
+				blockToPropose := util.NewBeaconBlockBellatrix()
+				blockToPropose.Block.Slot = 5
+				blockToPropose.Block.ParentRoot = parent[:]
+				blk := &ethpb.GenericSignedBeaconBlock_Bellatrix{Bellatrix: blockToPropose}
+				return &ethpb.GenericSignedBeaconBlock{Block: blk}
+			},
+		},
+		{
+			name: "deneb block no blob",
+			block: func(parent [32]byte) *ethpb.GenericSignedBeaconBlock {
+				blockToPropose := util.NewBeaconBlockDeneb()
+				blockToPropose.Block.Slot = 5
+				blockToPropose.Block.ParentRoot = parent[:]
+				blk := &ethpb.GenericSignedBeaconBlock_Deneb{Deneb: &ethpb.SignedBeaconBlockAndBlobsDeneb{
+					Block: blockToPropose,
+				}}
+				return &ethpb.GenericSignedBeaconBlock{Block: blk}
+			},
+		},
+		{
+			name: "deneb block has blobs",
+			block: func(parent [32]byte) *ethpb.GenericSignedBeaconBlock {
+				blockToPropose := util.NewBeaconBlockDeneb()
+				blockToPropose.Block.Slot = 5
+				blockToPropose.Block.ParentRoot = parent[:]
+				blk := &ethpb.GenericSignedBeaconBlock_Deneb{Deneb: &ethpb.SignedBeaconBlockAndBlobsDeneb{
+					Block: blockToPropose,
+					Blobs: []*ethpb.SignedBlobSidecar{
+						{Message: &ethpb.BlobSidecar{Index: 0, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 1, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 2, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 3, Slot: 5, BlockParentRoot: parent[:]}},
+					},
+				}}
+				return &ethpb.GenericSignedBeaconBlock{Block: blk}
+			},
+		},
+		{
+			name: "deneb block has too many blobs",
+			err:  "too many blobs in block: 7",
+			block: func(parent [32]byte) *ethpb.GenericSignedBeaconBlock {
+				blockToPropose := util.NewBeaconBlockDeneb()
+				blockToPropose.Block.Slot = 5
+				blockToPropose.Block.ParentRoot = parent[:]
+				blk := &ethpb.GenericSignedBeaconBlock_Deneb{Deneb: &ethpb.SignedBeaconBlockAndBlobsDeneb{
+					Block: blockToPropose,
+					Blobs: []*ethpb.SignedBlobSidecar{
+						{Message: &ethpb.BlobSidecar{Index: 0, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 1, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 2, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 3, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 4, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 5, Slot: 5, BlockParentRoot: parent[:]}},
+						{Message: &ethpb.BlobSidecar{Index: 6, Slot: 5, BlockParentRoot: parent[:]}},
+					},
+				}}
+				return &ethpb.GenericSignedBeaconBlock{Block: blk}
+			},
+		},
+		{
+			name: "blind capella",
+			block: func(parent [32]byte) *ethpb.GenericSignedBeaconBlock {
+				blockToPropose := util.NewBlindedBeaconBlockDeneb()
+				blockToPropose.Block.Slot = 5
+				blockToPropose.Block.ParentRoot = parent[:]
+				txRoot, err := ssz.TransactionsRoot([][]byte{})
+				require.NoError(t, err)
+				withdrawalsRoot, err := ssz.WithdrawalSliceRoot([]*enginev1.Withdrawal{}, fieldparams.MaxWithdrawalsPerPayload)
+				require.NoError(t, err)
+				blockToPropose.Block.Body.ExecutionPayloadHeader.TransactionsRoot = txRoot[:]
+				blockToPropose.Block.Body.ExecutionPayloadHeader.WithdrawalsRoot = withdrawalsRoot[:]
+				blk := &ethpb.GenericSignedBeaconBlock_BlindedDeneb{BlindedDeneb: &ethpb.SignedBlindedBeaconBlockAndBlobsDeneb{
+					Block: blockToPropose,
+					Blobs: []*ethpb.SignedBlindedBlobSidecar{
+						{
+							Message: &ethpb.BlindedBlobSidecar{
+								BlockRoot:       []byte{0x01},
+								Slot:            2,
+								BlockParentRoot: []byte{0x03},
+								ProposerIndex:   3,
+								BlobRoot:        []byte{0x04},
+								KzgCommitment:   []byte{0x05},
+								KzgProof:        []byte{0x06},
+							},
+							Signature: []byte{0x07},
+						},
+					},
+				}}
+				return &ethpb.GenericSignedBeaconBlock{Block: blk}
+			},
+		},
 	}
 
 	for _, tt := range tests {
@@ -570,17 +785,31 @@ func TestProposer_ProposeBlock_OK(t *testing.T) {
 			require.NoError(t, err)
 
 			c := &mock.ChainService{Root: bsRoot[:], State: beaconState}
+			db := dbutil.SetupDB(t)
 			proposerServer := &Server{
 				BlockReceiver: c,
 				BlockNotifier: c.BlockNotifier(),
 				P2P:           mockp2p.NewTestP2P(t),
-				BlockBuilder:  &builderTest.MockBuilderService{HasConfigured: true, PayloadCapella: emptyPayloadCapella()},
+				BlockBuilder:  &builderTest.MockBuilderService{HasConfigured: true, PayloadCapella: emptyPayloadCapella(), PayloadDeneb: emptyPayloadDeneb(), BlobBundle: &enginev1.BlobsBundle{KzgCommitments: [][]byte{{0x01}}, Proofs: [][]byte{{0x02}}, Blobs: [][]byte{{0x03}}}},
+				BeaconDB:      db,
 			}
 			blockToPropose := tt.block(bsRoot)
 			res, err := proposerServer.ProposeBeaconBlock(context.Background(), blockToPropose)
-			assert.NoError(t, err, "Could not propose block correctly")
-			if res == nil || len(res.BlockRoot) == 0 {
-				t.Error("No block root was returned")
+			if tt.err != "" { // Expecting an error
+				require.ErrorContains(t, tt.err, err)
+			} else {
+				assert.NoError(t, err, "Could not propose block correctly")
+				if res == nil || len(res.BlockRoot) == 0 {
+					t.Error("No block root was returned")
+				}
+			}
+			if tt.name == "deneb block has blobs" {
+				scs, err := db.BlobSidecarsBySlot(ctx, blockToPropose.GetDeneb().Block.Block.Slot)
+				require.NoError(t, err)
+				assert.Equal(t, 4, len(scs))
+				for i, sc := range scs {
+					require.Equal(t, uint64(i), sc.Index)
+				}
 			}
 		})
 	}
@@ -2620,3 +2849,19 @@ func TestProposer_GetFeeRecipientByPubKey(t *testing.T) {
 
 	require.Equal(t, common.HexToAddress("0x055Fb65722E7b2455012BFEBf6177F1D2e9728D8").Hex(), common.BytesToAddress(resp.FeeRecipient).Hex())
 }
+
+func Test_extractBlobs(t *testing.T) {
+	blobs := []*ethpb.SignedBlobSidecar{
+		{Message: &ethpb.BlobSidecar{Index: 0}}, {Message: &ethpb.BlobSidecar{Index: 1}},
+		{Message: &ethpb.BlobSidecar{Index: 2}}, {Message: &ethpb.BlobSidecar{Index: 3}},
+		{Message: &ethpb.BlobSidecar{Index: 4}}, {Message: &ethpb.BlobSidecar{Index: 5}}}
+	req := &ethpb.GenericSignedBeaconBlock{Block: &ethpb.GenericSignedBeaconBlock_Deneb{
+		Deneb: &ethpb.SignedBeaconBlockAndBlobsDeneb{
+			Blobs: blobs,
+		},
+	},
+	}
+	bs, err := extraSidecars(req)
+	require.NoError(t, err)
+	require.DeepEqual(t, blobs, bs)
+}