diff --git a/beacon-chain/execution/BUILD.bazel b/beacon-chain/execution/BUILD.bazel
index 94c796ffe289..d0d3cda67ca7 100644
--- a/beacon-chain/execution/BUILD.bazel
+++ b/beacon-chain/execution/BUILD.bazel
@@ -5,7 +5,6 @@ go_library(
     srcs = [
         "block_cache.go",
         "block_reader.go",
-        "check_transition_config.go",
         "deposit.go",
         "engine_client.go",
         "errors.go",
@@ -82,7 +81,6 @@ go_test(
     srcs = [
         "block_cache_test.go",
         "block_reader_test.go",
-        "check_transition_config_test.go",
         "deposit_test.go",
         "engine_client_fuzz_test.go",
         "engine_client_test.go",
@@ -96,7 +94,6 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//async/event:go_default_library",
-        "//beacon-chain/blockchain/testing:go_default_library",
         "//beacon-chain/cache/depositcache:go_default_library",
         "//beacon-chain/core/feed:go_default_library",
         "//beacon-chain/core/feed/state:go_default_library",
@@ -140,6 +137,5 @@ go_test(
         "@com_github_prometheus_client_golang//prometheus:go_default_library",
         "@com_github_sirupsen_logrus//:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
-        "@org_golang_google_protobuf//proto:go_default_library",
     ],
 )
diff --git a/beacon-chain/execution/check_transition_config.go b/beacon-chain/execution/check_transition_config.go
deleted file mode 100644
index d9254edcebcc..000000000000
--- a/beacon-chain/execution/check_transition_config.go
+++ /dev/null
@@ -1,168 +0,0 @@
-package execution
-
-import (
-	"context"
-	"errors"
-	"math"
-	"math/big"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common/hexutil"
-	"github.com/holiman/uint256"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/blocks"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed"
-	statefeed "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed/state"
-	"github.com/prysmaticlabs/prysm/v4/config/params"
-	"github.com/prysmaticlabs/prysm/v4/network"
-	pb "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
-	"github.com/prysmaticlabs/prysm/v4/time/slots"
-	"github.com/sirupsen/logrus"
-)
-
-var (
-	checkTransitionPollingInterval = time.Second * 10
-	logTtdInterval                 = time.Minute
-	configMismatchLog              = "Configuration mismatch between your execution client and Prysm. " +
-		"Please check your execution client and restart it with the proper configuration. If this is not done, " +
-		"your node will not be able to complete the proof-of-stake transition"
-	needsEnginePortLog = "Could not check execution client configuration. " +
-		"You are probably connecting to your execution client on the wrong port. For the Ethereum " +
-		"merge, you will need to connect to your " +
-		"execution client on port 8551 rather than 8545. This is known as the 'engine API' port and needs to be " +
-		"authenticated if connecting via HTTP. See our documentation on how to set up this up here " +
-		"https://docs.prylabs.network/docs/execution-node/authentication"
-)
-
-// Checks the transition configuration between Prysm and the connected execution node to ensure
-// there are no differences in terminal block difficulty and block hash.
-// If there are any discrepancies, we must log errors to ensure users can resolve
-// the problem and be ready for the merge transition.
-func (s *Service) checkTransitionConfiguration(
-	ctx context.Context, blockNotifications chan *feed.Event,
-) {
-	// If Bellatrix fork epoch is not set, we do not run this check.
-	if params.BeaconConfig().BellatrixForkEpoch == math.MaxUint64 {
-		return
-	}
-	i := new(big.Int)
-	i.SetString(params.BeaconConfig().TerminalTotalDifficulty, 10)
-	ttd := new(uint256.Int)
-	ttd.SetFromBig(i)
-	cfg := &pb.TransitionConfiguration{
-		TerminalTotalDifficulty: ttd.Hex(),
-		TerminalBlockHash:       params.BeaconConfig().TerminalBlockHash[:],
-		TerminalBlockNumber:     big.NewInt(0).Bytes(), // A value of 0 is recommended in the request.
-	}
-	err := s.ExchangeTransitionConfiguration(ctx, cfg)
-	if err != nil {
-		switch {
-		case errors.Is(err, ErrConfigMismatch):
-			log.WithError(err).Fatal(configMismatchLog)
-		case errors.Is(err, ErrMethodNotFound):
-			log.WithError(err).Error(needsEnginePortLog)
-		default:
-			log.WithError(err).Error("Could not check configuration values between execution and consensus client")
-		}
-	}
-
-	// We poll the execution client to see if the transition configuration has changed.
-	// This serves as a heartbeat to ensure the execution client and Prysm are ready for the
-	// Bellatrix hard-fork transition.
-	ticker := time.NewTicker(checkTransitionPollingInterval)
-	logTtdTicker := time.NewTicker(logTtdInterval)
-	hasTtdReached := false
-	defer ticker.Stop()
-	defer logTtdTicker.Stop()
-	sub := s.cfg.stateNotifier.StateFeed().Subscribe(blockNotifications)
-	defer sub.Unsubscribe()
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-sub.Err():
-			return
-		case ev := <-blockNotifications:
-			data, ok := ev.Data.(*statefeed.BlockProcessedData)
-			if !ok {
-				continue
-			}
-			isExecutionBlock, err := blocks.IsExecutionBlock(data.SignedBlock.Block().Body())
-			if err != nil {
-				log.WithError(err).Debug("Could not check whether signed block is execution block")
-				continue
-			}
-			if isExecutionBlock {
-				log.Debug("PoS transition is complete, no longer checking for configuration changes")
-				return
-			}
-		case tm := <-ticker.C:
-			ctx, cancel := context.WithDeadline(ctx, tm.Add(network.DefaultRPCHTTPTimeout))
-			err = s.ExchangeTransitionConfiguration(ctx, cfg)
-			s.handleExchangeConfigurationError(err)
-			cancel()
-		case <-logTtdTicker.C:
-			currentEpoch := slots.ToEpoch(slots.CurrentSlot(s.chainStartData.GetGenesisTime()))
-			if currentEpoch >= params.BeaconConfig().BellatrixForkEpoch && !hasTtdReached {
-				hasTtdReached, err = s.logTtdStatus(ctx, ttd)
-				if err != nil {
-					log.WithError(err).Error("Could not log ttd status")
-				}
-			}
-		}
-	}
-}
-
-// We check if there is a configuration mismatch error between the execution client
-// and the Prysm beacon node. If so, we need to log errors in the node as it cannot successfully
-// complete the merge transition for the Bellatrix hard fork.
-func (s *Service) handleExchangeConfigurationError(err error) {
-	if err == nil {
-		// If there is no error in checking the exchange configuration error, we clear
-		// the run error of the service if we had previously set it to ErrConfigMismatch.
-		if errors.Is(s.runError, ErrConfigMismatch) {
-			s.runError = nil
-		}
-		return
-	}
-	// If the error is a configuration mismatch, we set a runtime error in the service.
-	if errors.Is(err, ErrConfigMismatch) {
-		s.runError = err
-		log.WithError(err).Error(configMismatchLog)
-		return
-	} else if errors.Is(err, ErrMethodNotFound) {
-		log.WithError(err).Error(needsEnginePortLog)
-		return
-	}
-	log.WithError(err).Error("Could not check configuration values between execution and consensus client")
-}
-
-// Logs the terminal total difficulty status.
-func (s *Service) logTtdStatus(ctx context.Context, ttd *uint256.Int) (bool, error) {
-	latest, err := s.LatestExecutionBlock(ctx)
-	switch {
-	case errors.Is(err, hexutil.ErrEmptyString):
-		return false, nil
-	case err != nil:
-		return false, err
-	case latest == nil:
-		return false, errors.New("latest block is nil")
-	case latest.TotalDifficulty == "":
-		return false, nil
-	default:
-	}
-	latestTtd, err := hexutil.DecodeBig(latest.TotalDifficulty)
-	if err != nil {
-		return false, err
-	}
-	if latestTtd.Cmp(ttd.ToBig()) >= 0 {
-		return true, nil
-	}
-	log.WithFields(logrus.Fields{
-		"latestDifficulty":   latestTtd.String(),
-		"terminalDifficulty": ttd.ToBig().String(),
-		"network":            params.BeaconConfig().ConfigName,
-	}).Info("Ready for The Merge")
-
-	totalTerminalDifficulty.Set(float64(latestTtd.Uint64()))
-	return false, nil
-}
diff --git a/beacon-chain/execution/check_transition_config_test.go b/beacon-chain/execution/check_transition_config_test.go
deleted file mode 100644
index 11685f714949..000000000000
--- a/beacon-chain/execution/check_transition_config_test.go
+++ /dev/null
@@ -1,260 +0,0 @@
-package execution
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"math/big"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	gethtypes "github.com/ethereum/go-ethereum/core/types"
-	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/holiman/uint256"
-	mockChain "github.com/prysmaticlabs/prysm/v4/beacon-chain/blockchain/testing"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed"
-	statefeed "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed/state"
-	mocks "github.com/prysmaticlabs/prysm/v4/beacon-chain/execution/testing"
-	fieldparams "github.com/prysmaticlabs/prysm/v4/config/fieldparams"
-	"github.com/prysmaticlabs/prysm/v4/config/params"
-	"github.com/prysmaticlabs/prysm/v4/consensus-types/blocks"
-	pb "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
-	ethpb "github.com/prysmaticlabs/prysm/v4/proto/prysm/v1alpha1"
-	"github.com/prysmaticlabs/prysm/v4/testing/require"
-	logTest "github.com/sirupsen/logrus/hooks/test"
-	"google.golang.org/protobuf/proto"
-)
-
-func Test_checkTransitionConfiguration(t *testing.T) {
-	params.SetupTestConfigCleanup(t)
-	cfg := params.BeaconConfig().Copy()
-	cfg.BellatrixForkEpoch = 0
-	params.OverrideBeaconConfig(cfg)
-	hook := logTest.NewGlobal()
-
-	t.Run("context canceled", func(t *testing.T) {
-		ctx := context.Background()
-		m := &mocks.EngineClient{}
-		m.Err = errors.New("something went wrong")
-
-		srv := setupTransitionConfigTest(t)
-		srv.cfg.stateNotifier = &mockChain.MockStateNotifier{}
-		checkTransitionPollingInterval = time.Millisecond
-		ctx, cancel := context.WithCancel(ctx)
-		go srv.checkTransitionConfiguration(ctx, make(chan *feed.Event, 1))
-		<-time.After(100 * time.Millisecond)
-		cancel()
-		require.LogsContain(t, hook, "Could not check configuration values")
-	})
-
-	t.Run("block containing execution payload exits routine", func(t *testing.T) {
-		ctx := context.Background()
-		m := &mocks.EngineClient{}
-		m.Err = errors.New("something went wrong")
-		srv := setupTransitionConfigTest(t)
-		srv.cfg.stateNotifier = &mockChain.MockStateNotifier{}
-
-		checkTransitionPollingInterval = time.Millisecond
-		ctx, cancel := context.WithCancel(ctx)
-		exit := make(chan bool)
-		notification := make(chan *feed.Event)
-		go func() {
-			srv.checkTransitionConfiguration(ctx, notification)
-			exit <- true
-		}()
-		payload := emptyPayload()
-		payload.GasUsed = 21000
-		wrappedBlock, err := blocks.NewSignedBeaconBlock(&ethpb.SignedBeaconBlockBellatrix{
-			Block: &ethpb.BeaconBlockBellatrix{
-				Body: &ethpb.BeaconBlockBodyBellatrix{
-					ExecutionPayload: payload,
-				},
-			}},
-		)
-		require.NoError(t, err)
-		notification <- &feed.Event{
-			Data: &statefeed.BlockProcessedData{
-				SignedBlock: wrappedBlock,
-			},
-			Type: statefeed.BlockProcessed,
-		}
-		<-exit
-		cancel()
-		require.LogsContain(t, hook, "PoS transition is complete, no longer checking")
-	})
-}
-
-func TestService_handleExchangeConfigurationError(t *testing.T) {
-	hook := logTest.NewGlobal()
-	t.Run("clears existing service error", func(t *testing.T) {
-		srv := setupTransitionConfigTest(t)
-		srv.isRunning = true
-		srv.runError = ErrConfigMismatch
-		srv.handleExchangeConfigurationError(nil)
-		require.Equal(t, true, srv.Status() == nil)
-	})
-	t.Run("does not clear existing service error if wrong kind", func(t *testing.T) {
-		srv := setupTransitionConfigTest(t)
-		srv.isRunning = true
-		err := errors.New("something else went wrong")
-		srv.runError = err
-		srv.handleExchangeConfigurationError(nil)
-		require.ErrorIs(t, err, srv.Status())
-	})
-	t.Run("sets service error on config mismatch", func(t *testing.T) {
-		srv := setupTransitionConfigTest(t)
-		srv.isRunning = true
-		srv.handleExchangeConfigurationError(ErrConfigMismatch)
-		require.Equal(t, ErrConfigMismatch, srv.Status())
-		require.LogsContain(t, hook, configMismatchLog)
-	})
-	t.Run("does not set service error if unrelated problem", func(t *testing.T) {
-		srv := setupTransitionConfigTest(t)
-		srv.isRunning = true
-		srv.handleExchangeConfigurationError(errors.New("foo"))
-		require.Equal(t, true, srv.Status() == nil)
-		require.LogsContain(t, hook, "Could not check configuration values")
-	})
-}
-
-func setupTransitionConfigTest(t testing.TB) *Service {
-	fix := fixtures()
-	request, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-	require.Equal(t, true, ok)
-	resp, ok := proto.Clone(request).(*pb.TransitionConfiguration)
-	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())
-		}()
-
-		// Change the terminal block hash.
-		h := common.BytesToHash([]byte("foo"))
-		resp.TerminalBlockHash = h[:]
-		respJSON := map[string]interface{}{
-			"jsonrpc": "2.0",
-			"id":      1,
-			"result":  resp,
-		}
-		require.NoError(t, json.NewEncoder(w).Encode(respJSON))
-	}))
-	defer srv.Close()
-
-	rpcClient, err := rpc.DialHTTP(srv.URL)
-	require.NoError(t, err)
-	defer rpcClient.Close()
-
-	service := &Service{
-		cfg: &config{},
-	}
-	service.rpcClient = rpcClient
-	return service
-}
-
-func TestService_logTtdStatus(t *testing.T) {
-	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())
-		}()
-
-		resp := &pb.ExecutionBlock{
-			Header: gethtypes.Header{
-				ParentHash:  common.Hash{},
-				UncleHash:   common.Hash{},
-				Coinbase:    common.Address{},
-				Root:        common.Hash{},
-				TxHash:      common.Hash{},
-				ReceiptHash: common.Hash{},
-				Bloom:       gethtypes.Bloom{},
-				Difficulty:  big.NewInt(1),
-				Number:      big.NewInt(2),
-				GasLimit:    3,
-				GasUsed:     4,
-				Time:        5,
-				Extra:       nil,
-				MixDigest:   common.Hash{},
-				Nonce:       gethtypes.BlockNonce{},
-				BaseFee:     big.NewInt(6),
-			},
-			TotalDifficulty: "0x12345678",
-		}
-		respJSON := map[string]interface{}{
-			"jsonrpc": "2.0",
-			"id":      1,
-			"result":  resp,
-		}
-		require.NoError(t, json.NewEncoder(w).Encode(respJSON))
-	}))
-	defer srv.Close()
-
-	rpcClient, err := rpc.DialHTTP(srv.URL)
-	require.NoError(t, err)
-	defer rpcClient.Close()
-
-	service := &Service{
-		cfg: &config{},
-	}
-	service.rpcClient = rpcClient
-
-	ttd := new(uint256.Int)
-	reached, err := service.logTtdStatus(context.Background(), ttd.SetUint64(24343))
-	require.NoError(t, err)
-	require.Equal(t, true, reached)
-
-	reached, err = service.logTtdStatus(context.Background(), ttd.SetUint64(323423484))
-	require.NoError(t, err)
-	require.Equal(t, false, reached)
-}
-
-func TestService_logTtdStatus_NotSyncedClient(t *testing.T) {
-	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())
-		}()
-
-		resp := (*pb.ExecutionBlock)(nil) // Nil response when a client is not synced
-		respJSON := map[string]interface{}{
-			"jsonrpc": "2.0",
-			"id":      1,
-			"result":  resp,
-		}
-		require.NoError(t, json.NewEncoder(w).Encode(respJSON))
-	}))
-	defer srv.Close()
-
-	rpcClient, err := rpc.DialHTTP(srv.URL)
-	require.NoError(t, err)
-	defer rpcClient.Close()
-
-	service := &Service{
-		cfg: &config{},
-	}
-	service.rpcClient = rpcClient
-
-	ttd := new(uint256.Int)
-	reached, err := service.logTtdStatus(context.Background(), ttd.SetUint64(24343))
-	require.ErrorContains(t, "missing required field 'parentHash' for Header", err)
-	require.Equal(t, false, reached)
-}
-
-func emptyPayload() *pb.ExecutionPayload {
-	return &pb.ExecutionPayload{
-		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),
-		ExtraData:     make([]byte, 0),
-	}
-}
diff --git a/beacon-chain/execution/engine_client.go b/beacon-chain/execution/engine_client.go
index 95a5c11259bc..8711b4cc5d51 100644
--- a/beacon-chain/execution/engine_client.go
+++ b/beacon-chain/execution/engine_client.go
@@ -39,7 +39,6 @@ var (
 		ForkchoiceUpdatedMethodV2,
 		GetPayloadMethod,
 		GetPayloadMethodV2,
-		ExchangeTransitionConfigurationMethod,
 		GetPayloadBodiesByHashV1,
 		GetPayloadBodiesByRangeV1,
 	}
@@ -62,8 +61,6 @@ const (
 	// GetPayloadMethodV2 v2 request string for JSON-RPC.
 	GetPayloadMethodV2 = "engine_getPayloadV2"
 	GetPayloadMethodV3 = "engine_getPayloadV3"
-	// ExchangeTransitionConfigurationMethod v1 request string for JSON-RPC.
-	ExchangeTransitionConfigurationMethod = "engine_exchangeTransitionConfigurationV1"
 	// BlockByHashMethod request string for JSON-RPC.
 	BlockByHashMethod = "eth_getBlockByHash"
 	// BlockByNumberMethod request string for JSON-RPC.
@@ -106,9 +103,6 @@ type EngineCaller interface {
 		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, *pb.BlobsBundle, bool, error)
-	ExchangeTransitionConfiguration(
-		ctx context.Context, cfg *pb.TransitionConfiguration,
-	) error
 	ExecutionBlockByHash(ctx context.Context, hash common.Hash, withTxs bool) (*pb.ExecutionBlock, error)
 	GetTerminalBlockHash(ctx context.Context, transitionTime uint64) ([]byte, bool, error)
 }
@@ -299,51 +293,6 @@ func (s *Service) GetPayload(ctx context.Context, payloadId [8]byte, slot primit
 	return ed, nil, false, nil
 }
 
-// ExchangeTransitionConfiguration calls the engine_exchangeTransitionConfigurationV1 method via JSON-RPC.
-func (s *Service) ExchangeTransitionConfiguration(
-	ctx context.Context, cfg *pb.TransitionConfiguration,
-) error {
-	ctx, span := trace.StartSpan(ctx, "powchain.engine-api-client.ExchangeTransitionConfiguration")
-	defer span.End()
-
-	// We set terminal block number to 0 as the parameter is not set on the consensus layer.
-	zeroBigNum := big.NewInt(0)
-	cfg.TerminalBlockNumber = zeroBigNum.Bytes()
-	d := time.Now().Add(defaultEngineTimeout)
-	ctx, cancel := context.WithDeadline(ctx, d)
-	defer cancel()
-	result := &pb.TransitionConfiguration{}
-	if err := s.rpcClient.CallContext(ctx, result, ExchangeTransitionConfigurationMethod, cfg); err != nil {
-		return handleRPCError(err)
-	}
-
-	// We surface an error to the user if local configuration settings mismatch
-	// according to the response from the execution node.
-	cfgTerminalHash := params.BeaconConfig().TerminalBlockHash[:]
-	if !bytes.Equal(cfgTerminalHash, result.TerminalBlockHash) {
-		return errors.Wrapf(
-			ErrConfigMismatch,
-			"got %#x from execution node, wanted %#x",
-			result.TerminalBlockHash,
-			cfgTerminalHash,
-		)
-	}
-	ttdCfg := params.BeaconConfig().TerminalTotalDifficulty
-	ttdResult, err := hexutil.DecodeBig(result.TerminalTotalDifficulty)
-	if err != nil {
-		return errors.Wrap(err, "could not decode received terminal total difficulty")
-	}
-	if ttdResult.String() != ttdCfg {
-		return errors.Wrapf(
-			ErrConfigMismatch,
-			"got %s from execution node, wanted %s",
-			ttdResult.String(),
-			ttdCfg,
-		)
-	}
-	return nil
-}
-
 func (s *Service) ExchangeCapabilities(ctx context.Context) ([]string, error) {
 	ctx, span := trace.StartSpan(ctx, "powchain.engine-api-client.ExchangeCapabilities")
 	defer span.End()
diff --git a/beacon-chain/execution/engine_client_fuzz_test.go b/beacon-chain/execution/engine_client_fuzz_test.go
index a1210f7615f7..363983df58fa 100644
--- a/beacon-chain/execution/engine_client_fuzz_test.go
+++ b/beacon-chain/execution/engine_client_fuzz_test.go
@@ -13,7 +13,6 @@ import (
 
 	"github.com/ethereum/go-ethereum/beacon/engine"
 	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/pkg/errors"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/execution"
@@ -72,47 +71,6 @@ func FuzzForkChoiceResponse(f *testing.F) {
 	})
 }
 
-func FuzzExchangeTransitionConfiguration(f *testing.F) {
-	valHash := common.Hash([32]byte{0xFF, 0x01})
-	ttd := hexutil.Big(*big.NewInt(math.MaxInt))
-	seed := &engine.TransitionConfigurationV1{
-		TerminalTotalDifficulty: &ttd,
-		TerminalBlockHash:       valHash,
-		TerminalBlockNumber:     hexutil.Uint64(math.MaxUint64),
-	}
-
-	output, err := json.Marshal(seed)
-	assert.NoError(f, err)
-	f.Add(output)
-	f.Fuzz(func(t *testing.T, jsonBlob []byte) {
-		gethResp := &engine.TransitionConfigurationV1{}
-		prysmResp := &pb.TransitionConfiguration{}
-		gethErr := json.Unmarshal(jsonBlob, gethResp)
-		prysmErr := json.Unmarshal(jsonBlob, prysmResp)
-		assert.Equal(t, gethErr != nil, prysmErr != nil, fmt.Sprintf("geth and prysm unmarshaller return inconsistent errors. %v and %v", gethErr, prysmErr))
-		// Nothing to marshal if we have an error.
-		if gethErr != nil {
-			return
-		}
-		gethBlob, gethErr := json.Marshal(gethResp)
-		prysmBlob, prysmErr := json.Marshal(prysmResp)
-		if gethErr != nil {
-			t.Errorf("%s %s", gethResp.TerminalTotalDifficulty.String(), prysmResp.TerminalTotalDifficulty)
-		}
-		assert.Equal(t, gethErr != nil, prysmErr != nil, fmt.Sprintf("geth and prysm unmarshaller return inconsistent errors. %v and %v", gethErr, prysmErr))
-		if gethErr != nil {
-			t.Errorf("%s %s", gethResp.TerminalTotalDifficulty.String(), prysmResp.TerminalTotalDifficulty)
-		}
-		newGethResp := &engine.TransitionConfigurationV1{}
-		newGethErr := json.Unmarshal(prysmBlob, newGethResp)
-		assert.NoError(t, newGethErr)
-
-		newGethResp2 := &engine.TransitionConfigurationV1{}
-		newGethErr = json.Unmarshal(gethBlob, newGethResp2)
-		assert.NoError(t, newGethErr)
-	})
-}
-
 func FuzzExecutionPayload(f *testing.F) {
 	logsBloom := [256]byte{'j', 'u', 'n', 'k'}
 	execData := &engine.ExecutionPayloadEnvelope{
diff --git a/beacon-chain/execution/engine_client_test.go b/beacon-chain/execution/engine_client_test.go
index 8abb2812a0ee..c4074adfee2d 100644
--- a/beacon-chain/execution/engine_client_test.go
+++ b/beacon-chain/execution/engine_client_test.go
@@ -33,7 +33,6 @@ import (
 	"github.com/prysmaticlabs/prysm/v4/testing/require"
 	"github.com/prysmaticlabs/prysm/v4/testing/util"
 	logTest "github.com/sirupsen/logrus/hooks/test"
-	"google.golang.org/protobuf/proto"
 )
 
 var (
@@ -135,12 +134,6 @@ func TestClient_IPC(t *testing.T) {
 		require.NoError(t, err)
 		require.DeepEqual(t, bytesutil.ToBytes32(want.LatestValidHash), bytesutil.ToBytes32(latestValidHash))
 	})
-	t.Run(ExchangeTransitionConfigurationMethod, func(t *testing.T) {
-		want, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-		require.Equal(t, true, ok)
-		err := srv.ExchangeTransitionConfiguration(ctx, want)
-		require.NoError(t, err)
-	})
 	t.Run(BlockByNumberMethod, func(t *testing.T) {
 		want, ok := fix["ExecutionBlock"].(*pb.ExecutionBlock)
 		require.Equal(t, true, ok)
@@ -674,44 +667,6 @@ func TestClient_HTTP(t *testing.T) {
 		require.NoError(t, err)
 		require.DeepEqual(t, want, resp)
 	})
-	t.Run(ExchangeTransitionConfigurationMethod, func(t *testing.T) {
-		want, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-		require.Equal(t, true, ok)
-		encodedReq, err := json.Marshal(want)
-		require.NoError(t, err)
-		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)
-			// We expect the JSON string RPC request contains the right arguments.
-			require.Equal(t, true, strings.Contains(
-				jsonRequestString, string(encodedReq),
-			))
-			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.
-		err = client.ExchangeTransitionConfiguration(ctx, want)
-		require.NoError(t, err)
-	})
 	t.Run(BlockByHashMethod, func(t *testing.T) {
 		arg := common.BytesToHash([]byte("foo"))
 		want, ok := fix["ExecutionBlock"].(*pb.ExecutionBlock)
@@ -1190,78 +1145,6 @@ func Test_tDStringToUint256(t *testing.T) {
 	require.ErrorContains(t, "hex number > 256 bits", err)
 }
 
-func TestExchangeTransitionConfiguration(t *testing.T) {
-	fix := fixtures()
-	ctx := context.Background()
-	t.Run("wrong terminal block hash", func(t *testing.T) {
-		request, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-		require.Equal(t, true, ok)
-		resp, ok := proto.Clone(request).(*pb.TransitionConfiguration)
-		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())
-			}()
-
-			// Change the terminal block hash.
-			h := common.BytesToHash([]byte("foo"))
-			resp.TerminalBlockHash = h[:]
-			respJSON := map[string]interface{}{
-				"jsonrpc": "2.0",
-				"id":      1,
-				"result":  resp,
-			}
-			require.NoError(t, json.NewEncoder(w).Encode(respJSON))
-		}))
-		defer srv.Close()
-
-		rpcClient, err := rpc.DialHTTP(srv.URL)
-		require.NoError(t, err)
-		defer rpcClient.Close()
-
-		service := &Service{}
-		service.rpcClient = rpcClient
-
-		err = service.ExchangeTransitionConfiguration(ctx, request)
-		require.Equal(t, true, errors.Is(err, ErrConfigMismatch))
-	})
-	t.Run("wrong terminal total difficulty", func(t *testing.T) {
-		request, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-		require.Equal(t, true, ok)
-		resp, ok := proto.Clone(request).(*pb.TransitionConfiguration)
-		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())
-			}()
-
-			// Change the terminal block hash.
-			resp.TerminalTotalDifficulty = "0x1"
-			respJSON := map[string]interface{}{
-				"jsonrpc": "2.0",
-				"id":      1,
-				"result":  resp,
-			}
-			require.NoError(t, json.NewEncoder(w).Encode(respJSON))
-		}))
-		defer srv.Close()
-
-		rpcClient, err := rpc.DialHTTP(srv.URL)
-		require.NoError(t, err)
-		defer rpcClient.Close()
-
-		service := &Service{}
-		service.rpcClient = rpcClient
-
-		err = service.ExchangeTransitionConfiguration(ctx, request)
-		require.Equal(t, true, errors.Is(err, ErrConfigMismatch))
-	})
-}
-
 type customError struct {
 	code    int
 	timeout bool
@@ -1549,13 +1432,6 @@ func fixtures() map[string]interface{} {
 		},
 		PayloadId: &id,
 	}
-	b, _ := new(big.Int).SetString(params.BeaconConfig().TerminalTotalDifficulty, 10)
-	ttd, _ := uint256.FromBig(b)
-	transitionCfg := &pb.TransitionConfiguration{
-		TerminalBlockHash:       params.BeaconConfig().TerminalBlockHash[:],
-		TerminalTotalDifficulty: ttd.Hex(),
-		TerminalBlockNumber:     big.NewInt(0).Bytes(),
-	}
 	validStatus := &pb.PayloadStatus{
 		Status:          pb.PayloadStatus_VALID,
 		LatestValidHash: foo[:],
@@ -1598,7 +1474,6 @@ func fixtures() map[string]interface{} {
 		"ForkchoiceUpdatedSyncingResponse":  forkChoiceSyncingResp,
 		"ForkchoiceUpdatedAcceptedResponse": forkChoiceAcceptedResp,
 		"ForkchoiceUpdatedInvalidResponse":  forkChoiceInvalidResp,
-		"TransitionConfiguration":           transitionCfg,
 	}
 }
 
@@ -1905,17 +1780,6 @@ func (*testEngineService) GetPayloadV2(
 	return item
 }
 
-func (*testEngineService) ExchangeTransitionConfigurationV1(
-	_ context.Context, _ *pb.TransitionConfiguration,
-) *pb.TransitionConfiguration {
-	fix := fixtures()
-	item, ok := fix["TransitionConfiguration"].(*pb.TransitionConfiguration)
-	if !ok {
-		panic("not found")
-	}
-	return item
-}
-
 func (*testEngineService) ForkchoiceUpdatedV1(
 	_ context.Context, _ *pb.ForkchoiceState, _ *pb.PayloadAttributes,
 ) *ForkchoiceUpdatedResponse {
diff --git a/beacon-chain/execution/metrics.go b/beacon-chain/execution/metrics.go
index a1878912201f..1fc2027b4fe7 100644
--- a/beacon-chain/execution/metrics.go
+++ b/beacon-chain/execution/metrics.go
@@ -6,10 +6,6 @@ import (
 )
 
 var (
-	totalTerminalDifficulty = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "total_terminal_difficulty",
-		Help: "The total terminal difficulty of the execution chain before merge",
-	})
 	newPayloadLatency = promauto.NewHistogram(
 		prometheus.HistogramOpts{
 			Name:    "new_payload_v1_latency_milliseconds",
diff --git a/beacon-chain/execution/service.go b/beacon-chain/execution/service.go
index 831c2bd70229..386d663498d2 100644
--- a/beacon-chain/execution/service.go
+++ b/beacon-chain/execution/service.go
@@ -22,7 +22,6 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promauto"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/cache/depositsnapshot"
-	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed"
 	statefeed "github.com/prysmaticlabs/prysm/v4/beacon-chain/core/feed/state"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/core/transition"
 	"github.com/prysmaticlabs/prysm/v4/beacon-chain/db"
@@ -242,9 +241,6 @@ func (s *Service) Start() {
 	// Poll the execution client connection and fallback if errors occur.
 	s.pollConnectionStatus(s.ctx)
 
-	// Check transition configuration for the engine API client in the background.
-	go s.checkTransitionConfiguration(s.ctx, make(chan *feed.Event, 1))
-
 	go s.run(s.ctx.Done())
 }
 
diff --git a/beacon-chain/execution/testing/mock_engine_client.go b/beacon-chain/execution/testing/mock_engine_client.go
index 4acbba0efb19..6216aade8926 100644
--- a/beacon-chain/execution/testing/mock_engine_client.go
+++ b/beacon-chain/execution/testing/mock_engine_client.go
@@ -83,11 +83,6 @@ func (e *EngineClient) GetPayload(_ context.Context, _ [8]byte, s primitives.Slo
 	return p, nil, e.BuilderOverride, e.ErrGetPayload
 }
 
-// ExchangeTransitionConfiguration --
-func (e *EngineClient) ExchangeTransitionConfiguration(_ context.Context, _ *pb.TransitionConfiguration) error {
-	return e.Err
-}
-
 // LatestExecutionBlock --
 func (e *EngineClient) LatestExecutionBlock(_ context.Context) (*pb.ExecutionBlock, error) {
 	return e.ExecutionBlock, e.ErrLatestExecBlock
diff --git a/proto/engine/v1/execution_engine.pb.go b/proto/engine/v1/execution_engine.pb.go
index 45a135302c84..9189614b229b 100755
--- a/proto/engine/v1/execution_engine.pb.go
+++ b/proto/engine/v1/execution_engine.pb.go
@@ -7,13 +7,12 @@
 package enginev1
 
 import (
-	reflect "reflect"
-	sync "sync"
-
 	github_com_prysmaticlabs_prysm_v4_consensus_types_primitives "github.com/prysmaticlabs/prysm/v4/consensus-types/primitives"
 	_ "github.com/prysmaticlabs/prysm/v4/proto/eth/ext"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
 const (
@@ -78,7 +77,7 @@ func (x PayloadStatus_Status) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use PayloadStatus_Status.Descriptor instead.
 func (PayloadStatus_Status) EnumDescriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{13, 0}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{12, 0}
 }
 
 type ExecutionPayload struct {
@@ -1232,69 +1231,6 @@ func (x *ExecutionPayloadHeaderDeneb) GetExcessBlobGas() uint64 {
 	return 0
 }
 
-type TransitionConfiguration struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	TerminalTotalDifficulty string `protobuf:"bytes,1,opt,name=terminal_total_difficulty,json=terminalTotalDifficulty,proto3" json:"terminal_total_difficulty,omitempty"`
-	TerminalBlockHash       []byte `protobuf:"bytes,2,opt,name=terminal_block_hash,json=terminalBlockHash,proto3" json:"terminal_block_hash,omitempty"`
-	TerminalBlockNumber     []byte `protobuf:"bytes,3,opt,name=terminal_block_number,json=terminalBlockNumber,proto3" json:"terminal_block_number,omitempty"`
-}
-
-func (x *TransitionConfiguration) Reset() {
-	*x = TransitionConfiguration{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[9]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *TransitionConfiguration) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*TransitionConfiguration) ProtoMessage() {}
-
-func (x *TransitionConfiguration) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[9]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use TransitionConfiguration.ProtoReflect.Descriptor instead.
-func (*TransitionConfiguration) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{9}
-}
-
-func (x *TransitionConfiguration) GetTerminalTotalDifficulty() string {
-	if x != nil {
-		return x.TerminalTotalDifficulty
-	}
-	return ""
-}
-
-func (x *TransitionConfiguration) GetTerminalBlockHash() []byte {
-	if x != nil {
-		return x.TerminalBlockHash
-	}
-	return nil
-}
-
-func (x *TransitionConfiguration) GetTerminalBlockNumber() []byte {
-	if x != nil {
-		return x.TerminalBlockNumber
-	}
-	return nil
-}
-
 type PayloadAttributes struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -1308,7 +1244,7 @@ type PayloadAttributes struct {
 func (x *PayloadAttributes) Reset() {
 	*x = PayloadAttributes{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[10]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[9]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1321,7 +1257,7 @@ func (x *PayloadAttributes) String() string {
 func (*PayloadAttributes) ProtoMessage() {}
 
 func (x *PayloadAttributes) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[10]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[9]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1334,7 +1270,7 @@ func (x *PayloadAttributes) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PayloadAttributes.ProtoReflect.Descriptor instead.
 func (*PayloadAttributes) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{10}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{9}
 }
 
 func (x *PayloadAttributes) GetTimestamp() uint64 {
@@ -1372,7 +1308,7 @@ type PayloadAttributesV2 struct {
 func (x *PayloadAttributesV2) Reset() {
 	*x = PayloadAttributesV2{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[11]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[10]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1385,7 +1321,7 @@ func (x *PayloadAttributesV2) String() string {
 func (*PayloadAttributesV2) ProtoMessage() {}
 
 func (x *PayloadAttributesV2) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[11]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[10]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1398,7 +1334,7 @@ func (x *PayloadAttributesV2) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PayloadAttributesV2.ProtoReflect.Descriptor instead.
 func (*PayloadAttributesV2) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{11}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{10}
 }
 
 func (x *PayloadAttributesV2) GetTimestamp() uint64 {
@@ -1444,7 +1380,7 @@ type PayloadAttributesV3 struct {
 func (x *PayloadAttributesV3) Reset() {
 	*x = PayloadAttributesV3{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[12]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[11]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1457,7 +1393,7 @@ func (x *PayloadAttributesV3) String() string {
 func (*PayloadAttributesV3) ProtoMessage() {}
 
 func (x *PayloadAttributesV3) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[12]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[11]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1470,7 +1406,7 @@ func (x *PayloadAttributesV3) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PayloadAttributesV3.ProtoReflect.Descriptor instead.
 func (*PayloadAttributesV3) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{12}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{11}
 }
 
 func (x *PayloadAttributesV3) GetTimestamp() uint64 {
@@ -1521,7 +1457,7 @@ type PayloadStatus struct {
 func (x *PayloadStatus) Reset() {
 	*x = PayloadStatus{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[13]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[12]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1534,7 +1470,7 @@ func (x *PayloadStatus) String() string {
 func (*PayloadStatus) ProtoMessage() {}
 
 func (x *PayloadStatus) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[13]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[12]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1547,7 +1483,7 @@ func (x *PayloadStatus) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PayloadStatus.ProtoReflect.Descriptor instead.
 func (*PayloadStatus) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{13}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{12}
 }
 
 func (x *PayloadStatus) GetStatus() PayloadStatus_Status {
@@ -1584,7 +1520,7 @@ type ForkchoiceState struct {
 func (x *ForkchoiceState) Reset() {
 	*x = ForkchoiceState{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[14]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[13]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1597,7 +1533,7 @@ func (x *ForkchoiceState) String() string {
 func (*ForkchoiceState) ProtoMessage() {}
 
 func (x *ForkchoiceState) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[14]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[13]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1610,7 +1546,7 @@ func (x *ForkchoiceState) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ForkchoiceState.ProtoReflect.Descriptor instead.
 func (*ForkchoiceState) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{14}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{13}
 }
 
 func (x *ForkchoiceState) GetHeadBlockHash() []byte {
@@ -1648,7 +1584,7 @@ type Withdrawal struct {
 func (x *Withdrawal) Reset() {
 	*x = Withdrawal{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[15]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[14]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1661,7 +1597,7 @@ func (x *Withdrawal) String() string {
 func (*Withdrawal) ProtoMessage() {}
 
 func (x *Withdrawal) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[15]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[14]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1674,7 +1610,7 @@ func (x *Withdrawal) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Withdrawal.ProtoReflect.Descriptor instead.
 func (*Withdrawal) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{15}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{14}
 }
 
 func (x *Withdrawal) GetIndex() uint64 {
@@ -1718,7 +1654,7 @@ type BlobsBundle struct {
 func (x *BlobsBundle) Reset() {
 	*x = BlobsBundle{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[16]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1731,7 +1667,7 @@ func (x *BlobsBundle) String() string {
 func (*BlobsBundle) ProtoMessage() {}
 
 func (x *BlobsBundle) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[16]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1744,7 +1680,7 @@ func (x *BlobsBundle) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BlobsBundle.ProtoReflect.Descriptor instead.
 func (*BlobsBundle) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{16}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *BlobsBundle) GetKzgCommitments() [][]byte {
@@ -1781,7 +1717,7 @@ type BlindedBlobsBundle struct {
 func (x *BlindedBlobsBundle) Reset() {
 	*x = BlindedBlobsBundle{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[17]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1794,7 +1730,7 @@ func (x *BlindedBlobsBundle) String() string {
 func (*BlindedBlobsBundle) ProtoMessage() {}
 
 func (x *BlindedBlobsBundle) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[17]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1807,7 +1743,7 @@ func (x *BlindedBlobsBundle) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use BlindedBlobsBundle.ProtoReflect.Descriptor instead.
 func (*BlindedBlobsBundle) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{17}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *BlindedBlobsBundle) GetKzgCommitments() [][]byte {
@@ -1842,7 +1778,7 @@ type Blob struct {
 func (x *Blob) Reset() {
 	*x = Blob{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[18]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1855,7 +1791,7 @@ func (x *Blob) String() string {
 func (*Blob) ProtoMessage() {}
 
 func (x *Blob) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[18]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1868,7 +1804,7 @@ func (x *Blob) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use Blob.ProtoReflect.Descriptor instead.
 func (*Blob) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{18}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *Blob) GetData() []byte {
@@ -1889,7 +1825,7 @@ type ExchangeCapabilities struct {
 func (x *ExchangeCapabilities) Reset() {
 	*x = ExchangeCapabilities{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[19]
+		mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1902,7 +1838,7 @@ func (x *ExchangeCapabilities) String() string {
 func (*ExchangeCapabilities) ProtoMessage() {}
 
 func (x *ExchangeCapabilities) ProtoReflect() protoreflect.Message {
-	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[19]
+	mi := &file_proto_engine_v1_execution_engine_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1915,7 +1851,7 @@ func (x *ExchangeCapabilities) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ExchangeCapabilities.ProtoReflect.Descriptor instead.
 func (*ExchangeCapabilities) Descriptor() ([]byte, []int) {
-	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{19}
+	return file_proto_engine_v1_execution_engine_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *ExchangeCapabilities) GetSupportedMethods() []string {
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 }
 
 var (
@@ -2361,7 +2285,7 @@ func file_proto_engine_v1_execution_engine_proto_rawDescGZIP() []byte {
 }
 
 var file_proto_engine_v1_execution_engine_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_proto_engine_v1_execution_engine_proto_msgTypes = make([]protoimpl.MessageInfo, 20)
+var file_proto_engine_v1_execution_engine_proto_msgTypes = make([]protoimpl.MessageInfo, 19)
 var file_proto_engine_v1_execution_engine_proto_goTypes = []interface{}{
 	(PayloadStatus_Status)(0),                            // 0: ethereum.engine.v1.PayloadStatus.Status
 	(*ExecutionPayload)(nil),                             // 1: ethereum.engine.v1.ExecutionPayload
@@ -2373,27 +2297,26 @@ var file_proto_engine_v1_execution_engine_proto_goTypes = []interface{}{
 	(*ExecutionPayloadHeader)(nil),                       // 7: ethereum.engine.v1.ExecutionPayloadHeader
 	(*ExecutionPayloadHeaderCapella)(nil),                // 8: ethereum.engine.v1.ExecutionPayloadHeaderCapella
 	(*ExecutionPayloadHeaderDeneb)(nil),                  // 9: ethereum.engine.v1.ExecutionPayloadHeaderDeneb
-	(*TransitionConfiguration)(nil),                      // 10: ethereum.engine.v1.TransitionConfiguration
-	(*PayloadAttributes)(nil),                            // 11: ethereum.engine.v1.PayloadAttributes
-	(*PayloadAttributesV2)(nil),                          // 12: ethereum.engine.v1.PayloadAttributesV2
-	(*PayloadAttributesV3)(nil),                          // 13: ethereum.engine.v1.PayloadAttributesV3
-	(*PayloadStatus)(nil),                                // 14: ethereum.engine.v1.PayloadStatus
-	(*ForkchoiceState)(nil),                              // 15: ethereum.engine.v1.ForkchoiceState
-	(*Withdrawal)(nil),                                   // 16: ethereum.engine.v1.Withdrawal
-	(*BlobsBundle)(nil),                                  // 17: ethereum.engine.v1.BlobsBundle
-	(*BlindedBlobsBundle)(nil),                           // 18: ethereum.engine.v1.BlindedBlobsBundle
-	(*Blob)(nil),                                         // 19: ethereum.engine.v1.Blob
-	(*ExchangeCapabilities)(nil),                         // 20: ethereum.engine.v1.ExchangeCapabilities
+	(*PayloadAttributes)(nil),                            // 10: ethereum.engine.v1.PayloadAttributes
+	(*PayloadAttributesV2)(nil),                          // 11: ethereum.engine.v1.PayloadAttributesV2
+	(*PayloadAttributesV3)(nil),                          // 12: ethereum.engine.v1.PayloadAttributesV3
+	(*PayloadStatus)(nil),                                // 13: ethereum.engine.v1.PayloadStatus
+	(*ForkchoiceState)(nil),                              // 14: ethereum.engine.v1.ForkchoiceState
+	(*Withdrawal)(nil),                                   // 15: ethereum.engine.v1.Withdrawal
+	(*BlobsBundle)(nil),                                  // 16: ethereum.engine.v1.BlobsBundle
+	(*BlindedBlobsBundle)(nil),                           // 17: ethereum.engine.v1.BlindedBlobsBundle
+	(*Blob)(nil),                                         // 18: ethereum.engine.v1.Blob
+	(*ExchangeCapabilities)(nil),                         // 19: ethereum.engine.v1.ExchangeCapabilities
 }
 var file_proto_engine_v1_execution_engine_proto_depIdxs = []int32{
-	16, // 0: ethereum.engine.v1.ExecutionPayloadBodyV1.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
-	16, // 1: ethereum.engine.v1.ExecutionPayloadCapella.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
-	16, // 2: ethereum.engine.v1.ExecutionPayloadDeneb.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
+	15, // 0: ethereum.engine.v1.ExecutionPayloadBodyV1.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
+	15, // 1: ethereum.engine.v1.ExecutionPayloadCapella.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
+	15, // 2: ethereum.engine.v1.ExecutionPayloadDeneb.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
 	3,  // 3: ethereum.engine.v1.ExecutionPayloadCapellaWithValue.payload:type_name -> ethereum.engine.v1.ExecutionPayloadCapella
 	4,  // 4: ethereum.engine.v1.ExecutionPayloadDenebWithValueAndBlobsBundle.payload:type_name -> ethereum.engine.v1.ExecutionPayloadDeneb
-	17, // 5: ethereum.engine.v1.ExecutionPayloadDenebWithValueAndBlobsBundle.blobs_bundle:type_name -> ethereum.engine.v1.BlobsBundle
-	16, // 6: ethereum.engine.v1.PayloadAttributesV2.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
-	16, // 7: ethereum.engine.v1.PayloadAttributesV3.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
+	16, // 5: ethereum.engine.v1.ExecutionPayloadDenebWithValueAndBlobsBundle.blobs_bundle:type_name -> ethereum.engine.v1.BlobsBundle
+	15, // 6: ethereum.engine.v1.PayloadAttributesV2.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
+	15, // 7: ethereum.engine.v1.PayloadAttributesV3.withdrawals:type_name -> ethereum.engine.v1.Withdrawal
 	0,  // 8: ethereum.engine.v1.PayloadStatus.status:type_name -> ethereum.engine.v1.PayloadStatus.Status
 	9,  // [9:9] is the sub-list for method output_type
 	9,  // [9:9] is the sub-list for method input_type
@@ -2517,18 +2440,6 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 			}
 		}
 		file_proto_engine_v1_execution_engine_proto_msgTypes[9].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*TransitionConfiguration); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PayloadAttributes); i {
 			case 0:
 				return &v.state
@@ -2540,7 +2451,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[10].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PayloadAttributesV2); i {
 			case 0:
 				return &v.state
@@ -2552,7 +2463,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PayloadAttributesV3); i {
 			case 0:
 				return &v.state
@@ -2564,7 +2475,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*PayloadStatus); i {
 			case 0:
 				return &v.state
@@ -2576,7 +2487,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ForkchoiceState); i {
 			case 0:
 				return &v.state
@@ -2588,7 +2499,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Withdrawal); i {
 			case 0:
 				return &v.state
@@ -2600,7 +2511,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*BlobsBundle); i {
 			case 0:
 				return &v.state
@@ -2612,7 +2523,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*BlindedBlobsBundle); i {
 			case 0:
 				return &v.state
@@ -2624,7 +2535,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*Blob); i {
 			case 0:
 				return &v.state
@@ -2636,7 +2547,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 				return nil
 			}
 		}
-		file_proto_engine_v1_execution_engine_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
+		file_proto_engine_v1_execution_engine_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*ExchangeCapabilities); i {
 			case 0:
 				return &v.state
@@ -2655,7 +2566,7 @@ func file_proto_engine_v1_execution_engine_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_proto_engine_v1_execution_engine_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   20,
+			NumMessages:   19,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/proto/engine/v1/execution_engine.proto b/proto/engine/v1/execution_engine.proto
index 06a4b80217e7..7bf08a1ae53c 100644
--- a/proto/engine/v1/execution_engine.proto
+++ b/proto/engine/v1/execution_engine.proto
@@ -154,12 +154,6 @@ message ExecutionPayloadHeaderDeneb {
 	uint64 excess_blob_gas  = 17;
 }
 
-message TransitionConfiguration {
-	string terminal_total_difficulty = 1;
-	bytes terminal_block_hash        = 2;
-	bytes terminal_block_number      = 3;
-}
-
 message PayloadAttributes {
 	uint64 timestamp              = 1;
 	bytes prev_randao             = 2 [(ethereum.eth.ext.ssz_size) = "32"];
diff --git a/proto/engine/v1/json_marshal_unmarshal.go b/proto/engine/v1/json_marshal_unmarshal.go
index 80a30f414d18..e9ba8af19377 100644
--- a/proto/engine/v1/json_marshal_unmarshal.go
+++ b/proto/engine/v1/json_marshal_unmarshal.go
@@ -659,50 +659,6 @@ func (p *PayloadStatus) UnmarshalJSON(enc []byte) error {
 	return nil
 }
 
-type transitionConfigurationJSON struct {
-	TerminalTotalDifficulty *hexutil.Big   `json:"terminalTotalDifficulty"`
-	TerminalBlockHash       common.Hash    `json:"terminalBlockHash"`
-	TerminalBlockNumber     hexutil.Uint64 `json:"terminalBlockNumber"`
-}
-
-// MarshalJSON --
-func (t *TransitionConfiguration) MarshalJSON() ([]byte, error) {
-	num := new(big.Int).SetBytes(t.TerminalBlockNumber)
-	var hexNum *hexutil.Big
-	if t.TerminalTotalDifficulty != "" {
-		ttdNum, err := hexutil.DecodeBig(t.TerminalTotalDifficulty)
-		if err != nil {
-			return nil, err
-		}
-		bHex := hexutil.Big(*ttdNum)
-		hexNum = &bHex
-	}
-	if len(t.TerminalBlockHash) != fieldparams.RootLength {
-		return nil, errors.Errorf("terminal block hash is of the wrong length: %d", len(t.TerminalBlockHash))
-	}
-	return json.Marshal(transitionConfigurationJSON{
-		TerminalTotalDifficulty: hexNum,
-		TerminalBlockHash:       *(*[32]byte)(t.TerminalBlockHash),
-		TerminalBlockNumber:     hexutil.Uint64(num.Uint64()),
-	})
-}
-
-// UnmarshalJSON --
-func (t *TransitionConfiguration) UnmarshalJSON(enc []byte) error {
-	dec := transitionConfigurationJSON{}
-	if err := json.Unmarshal(enc, &dec); err != nil {
-		return err
-	}
-	*t = TransitionConfiguration{}
-	num := big.NewInt(int64(dec.TerminalBlockNumber))
-	if dec.TerminalTotalDifficulty != nil {
-		t.TerminalTotalDifficulty = dec.TerminalTotalDifficulty.String()
-	}
-	t.TerminalBlockHash = dec.TerminalBlockHash[:]
-	t.TerminalBlockNumber = num.Bytes()
-	return nil
-}
-
 type forkchoiceStateJSON struct {
 	HeadBlockHash      hexutil.Bytes `json:"headBlockHash"`
 	SafeBlockHash      hexutil.Bytes `json:"safeBlockHash"`
diff --git a/proto/engine/v1/json_marshal_unmarshal_test.go b/proto/engine/v1/json_marshal_unmarshal_test.go
index c1b98ac00818..60cf744a799f 100644
--- a/proto/engine/v1/json_marshal_unmarshal_test.go
+++ b/proto/engine/v1/json_marshal_unmarshal_test.go
@@ -9,9 +9,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
-	"github.com/holiman/uint256"
 	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"
 	enginev1 "github.com/prysmaticlabs/prysm/v4/proto/engine/v1"
@@ -74,27 +72,6 @@ func TestJsonMarshalUnmarshal(t *testing.T) {
 		require.DeepEqual(t, safe, payloadPb.SafeBlockHash)
 		require.DeepEqual(t, finalized, payloadPb.FinalizedBlockHash)
 	})
-	t.Run("transition configuration", func(t *testing.T) {
-		blockHash := [32]byte{'h', 'e', 'a', 'd'}
-		bInt := new(big.Int)
-		_, ok := bInt.SetString(params.BeaconConfig().TerminalTotalDifficulty, 10)
-		require.Equal(t, true, ok)
-		ttdNum := new(uint256.Int)
-		ttdNum.SetFromBig(bInt)
-		jsonPayload := &enginev1.TransitionConfiguration{
-			TerminalBlockHash:       blockHash[:],
-			TerminalTotalDifficulty: ttdNum.Hex(),
-			TerminalBlockNumber:     big.NewInt(0).Bytes(),
-		}
-		enc, err := json.Marshal(jsonPayload)
-		require.NoError(t, err)
-		payloadPb := &enginev1.TransitionConfiguration{}
-		require.NoError(t, json.Unmarshal(enc, payloadPb))
-		require.DeepEqual(t, blockHash[:], payloadPb.TerminalBlockHash)
-
-		require.DeepEqual(t, ttdNum.Hex(), payloadPb.TerminalTotalDifficulty)
-		require.DeepEqual(t, big.NewInt(0).Bytes(), payloadPb.TerminalBlockNumber)
-	})
 	t.Run("execution payload", func(t *testing.T) {
 		baseFeePerGas := big.NewInt(1770307273)
 		parentHash := bytesutil.PadTo([]byte("parent"), fieldparams.RootLength)
diff --git a/testing/middleware/builder/builder.go b/testing/middleware/builder/builder.go
index f58f1cb72115..bd0670c9a9fa 100644
--- a/testing/middleware/builder/builder.go
+++ b/testing/middleware/builder/builder.go
@@ -54,7 +54,6 @@ const (
 	GetPayloadMethod = "engine_getPayloadV1"
 	// GetPayloadMethodV2 v2 request string for JSON-RPC.
 	GetPayloadMethodV2 = "engine_getPayloadV2"
-	// ExchangeTransitionConfigurationMethod v1 request string for JSON-RPC.
 )
 
 var (
diff --git a/testing/spectest/shared/common/forkchoice/service.go b/testing/spectest/shared/common/forkchoice/service.go
index aa111d1a076b..a681202ff072 100644
--- a/testing/spectest/shared/common/forkchoice/service.go
+++ b/testing/spectest/shared/common/forkchoice/service.go
@@ -106,10 +106,6 @@ func (m *engineMock) LatestExecutionBlock(context.Context) (*pb.ExecutionBlock,
 	return nil, nil
 }
 
-func (m *engineMock) ExchangeTransitionConfiguration(context.Context, *pb.TransitionConfiguration) error {
-	return nil
-}
-
 func (m *engineMock) ExecutionBlockByHash(_ context.Context, hash common.Hash, _ bool) (*pb.ExecutionBlock, error) {
 	b, ok := m.powBlocks[bytesutil.ToBytes32(hash.Bytes())]
 	if !ok {