diff --git a/beacon_chain/beacon_chain_db_immutable.nim b/beacon_chain/beacon_chain_db_immutable.nim
index bcf2b1caa1..ef7b006185 100644
--- a/beacon_chain/beacon_chain_db_immutable.nim
+++ b/beacon_chain/beacon_chain_db_immutable.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2021-2024 Status Research & Development GmbH
+# Copyright (c) 2021-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/beacon_node_light_client.nim b/beacon_chain/beacon_node_light_client.nim
index ab98dbcac3..e516dc6223 100644
--- a/beacon_chain/beacon_node_light_client.nim
+++ b/beacon_chain/beacon_node_light_client.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/consensus_object_pools/blob_quarantine.nim b/beacon_chain/consensus_object_pools/blob_quarantine.nim
index 7deaf9d8d6..41b6861525 100644
--- a/beacon_chain/consensus_object_pools/blob_quarantine.nim
+++ b/beacon_chain/consensus_object_pools/blob_quarantine.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/consensus_object_pools/block_dag.nim b/beacon_chain/consensus_object_pools/block_dag.nim
index 4a81027ea0..34405ce8c5 100644
--- a/beacon_chain/consensus_object_pools/block_dag.nim
+++ b/beacon_chain/consensus_object_pools/block_dag.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/consensus_object_pools/blockchain_dag.nim b/beacon_chain/consensus_object_pools/blockchain_dag.nim
index 8be0d99fac..05d639b4cf 100644
--- a/beacon_chain/consensus_object_pools/blockchain_dag.nim
+++ b/beacon_chain/consensus_object_pools/blockchain_dag.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/consensus_object_pools/blockchain_list.nim b/beacon_chain/consensus_object_pools/blockchain_list.nim
index 95a38249ec..5ae36b34f7 100644
--- a/beacon_chain/consensus_object_pools/blockchain_list.nim
+++ b/beacon_chain/consensus_object_pools/blockchain_list.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/consensus_object_pools/data_column_quarantine.nim b/beacon_chain/consensus_object_pools/data_column_quarantine.nim
index 20e9ed7846..2c22a53a23 100644
--- a/beacon_chain/consensus_object_pools/data_column_quarantine.nim
+++ b/beacon_chain/consensus_object_pools/data_column_quarantine.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/el/el_manager.nim b/beacon_chain/el/el_manager.nim
index 3f18b2e9e8..cfe6bc54ab 100644
--- a/beacon_chain/el/el_manager.nim
+++ b/beacon_chain/el/el_manager.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/el/engine_api_conversions.nim b/beacon_chain/el/engine_api_conversions.nim
index 1e7a9de05f..e940bd047c 100644
--- a/beacon_chain/el/engine_api_conversions.nim
+++ b/beacon_chain/el/engine_api_conversions.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/gossip_processing/block_processor.nim b/beacon_chain/gossip_processing/block_processor.nim
index 4c93339cc7..7231ccdc7e 100644
--- a/beacon_chain/gossip_processing/block_processor.nim
+++ b/beacon_chain/gossip_processing/block_processor.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -302,7 +302,7 @@ proc newExecutionPayload*(
       blck.body.execution_payload
     else:
       debug "Block body does not support execution payload"
-      nil
+      default(electra.ExecutionPayload)
 
   if not elManager.hasProperlyConfiguredConnection:
     if elManager.hasConnection:
diff --git a/beacon_chain/gossip_processing/gossip_validation.nim b/beacon_chain/gossip_processing/gossip_validation.nim
index 90cb46eac2..4207c213e7 100644
--- a/beacon_chain/gossip_processing/gossip_validation.nim
+++ b/beacon_chain/gossip_processing/gossip_validation.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2019-2024 Status Research & Development GmbH
+# Copyright (c) 2019-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/nimbus_beacon_node.nim b/beacon_chain/nimbus_beacon_node.nim
index b60111a16d..80f8c801db 100644
--- a/beacon_chain/nimbus_beacon_node.nim
+++ b/beacon_chain/nimbus_beacon_node.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/nimbus_light_client.nim b/beacon_chain/nimbus_light_client.nim
index 519b1e89db..2d2a5403f9 100644
--- a/beacon_chain/nimbus_light_client.nim
+++ b/beacon_chain/nimbus_light_client.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -111,7 +111,8 @@ programMain:
         signedBlock: ForkedSignedBeaconBlock
     ): Future[void] {.async: (raises: [CancelledError]).} =
       withBlck(signedBlock):
-        when consensusFork >= ConsensusFork.Bellatrix:
+        when consensusFork >= ConsensusFork.Bellatrix and 
+          consensusFork < ConsensusFork.Fulu:
           if forkyBlck.message.is_execution_block:
             template payload(): auto = forkyBlck.message.body.execution_payload
             if elManager != nil and not payload.block_hash.isZero:
diff --git a/beacon_chain/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index aac8082ab7..90bad916d8 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index fe10a90fd4..c6b6005c85 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/datatypes/constants.nim b/beacon_chain/spec/datatypes/constants.nim
index d96647a069..84904c771e 100644
--- a/beacon_chain/spec/datatypes/constants.nim
+++ b/beacon_chain/spec/datatypes/constants.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/datatypes/fulu.nim b/beacon_chain/spec/datatypes/fulu.nim
index df385a529a..0eeeac47f8 100644
--- a/beacon_chain/spec/datatypes/fulu.nim
+++ b/beacon_chain/spec/datatypes/fulu.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -20,7 +20,6 @@ import
   ssz_serialization/[merkleization, proofs],
   ssz_serialization/types as sszTypes,
   kzg4844/[kzg, kzg_abi],
-  std/typetraits,
   chronicles,
   ../digest,
   "."/[base, phase0, electra],
@@ -36,11 +35,6 @@ from ./capella import
   ExecutionBranch, HistoricalSummary, SignedBLSToExecutionChangeList,
   Withdrawal, EXECUTION_PAYLOAD_GINDEX
 from ./deneb import Blobs, BlobsBundle, KzgCommitments, KzgProofs
-from ./electra import 
-  PendingDeposit, PendingPartialWithdrawal, 
-  PendingConsolidation, ExecutionPayload, Attestation, TrustedAttestation,
-  ElectraCommitteeValidatorsBits,AttesterSlashing, AttestationCommitteeBits,
-  FINALIZED_ROOT_GINDEX_ELECTRA, ExecutionRequests
 
 export json_serialization, base, kzg4844
 
@@ -130,16 +124,16 @@ const
     PTC_SIZE* = 512
 
     # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.4/specs/_features/eip7732/beacon-chain.md#max-operations-per-block
-    MAX_PAYLOAD_ATTESTATIONS = 4
+    MAX_PAYLOAD_ATTESTATIONS* = 4
 type
 
   PTCStatus* = distinct uint64
 
   # https://github.com/ethereum/consensus-specs/blob/dev/specs/_features/eip7732/beacon-chain.md#payloadattestationdata
   PayloadAttestationData* = object
-    beaconBlockRoot*: Eth2Digest
+    beacon_block_root*: Eth2Digest
     slot*: Slot
-    payload_Status*: uint8
+    payload_status*: uint8
 
   # https://github.com/ethereum/consensus-specs/blob/dev/specs/_features/eip7732/beacon-chain.md#payloadattestation
   PayloadAttestation* = object
@@ -155,7 +149,7 @@ type
 
   # https://github.com/ethereum/consensus-specs/blob/dev/specs/_features/eip7732/beacon-chain.md#indexedpayloadattestation
   IndexedPayloadAttestation* = object
-    attestingIndices*: List[ValidatorIndex, Limit PTC_SIZE]
+    attesting_indices*: List[ValidatorIndex, Limit PTC_SIZE]
     data*: PayloadAttestationData
     signature*: ValidatorSig
 
@@ -630,9 +624,9 @@ func initHashedBeaconState*(s: BeaconState): HashedBeaconState =
 
 func shortLog*(v: PayloadAttestationData): auto =
   (
-    beaconBlockRoot: shortLog(v.beaconBlockRoot),
+    beacon_block_root: shortLog(v.beacon_block_root),
     slot: shortLog(v.slot),
-    payload_Status: $v.payload_Status
+    payload_status: $v.payload_status
   )
 
 func shortLog*(v: SomeBeaconBlock): auto =
diff --git a/beacon_chain/spec/eip7594_helpers.nim b/beacon_chain/spec/eip7594_helpers.nim
index 036d258752..1bfd4378da 100644
--- a/beacon_chain/spec/eip7594_helpers.nim
+++ b/beacon_chain/spec/eip7594_helpers.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/eip7732_helpers.nim b/beacon_chain/spec/eip7732_helpers.nim
index c562eca0fa..3e28db1c0e 100644
--- a/beacon_chain/spec/eip7732_helpers.nim
+++ b/beacon_chain/spec/eip7732_helpers.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim b/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
index e5fde6b128..7ee3dc5fc3 100644
--- a/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
+++ b/beacon_chain/spec/eth2_apis/eth2_rest_serialization.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/forks_light_client.nim b/beacon_chain/spec/forks_light_client.nim
index e664bcec37..a8cf90e0d6 100644
--- a/beacon_chain/spec/forks_light_client.nim
+++ b/beacon_chain/spec/forks_light_client.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2023-2024 Status Research & Development GmbH
+# Copyright (c) 2023-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/helpers.nim b/beacon_chain/spec/helpers.nim
index 7ec080ffe8..26f3c8b7ce 100644
--- a/beacon_chain/spec/helpers.nim
+++ b/beacon_chain/spec/helpers.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/helpers_el.nim b/beacon_chain/spec/helpers_el.nim
index 5451cd14b0..1e0dbff1b6 100644
--- a/beacon_chain/spec/helpers_el.nim
+++ b/beacon_chain/spec/helpers_el.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/mev/fulu_mev.nim b/beacon_chain/spec/mev/fulu_mev.nim
index 0ddc9d976a..7b72442eb2 100644
--- a/beacon_chain/spec/mev/fulu_mev.nim
+++ b/beacon_chain/spec/mev/fulu_mev.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -40,10 +40,10 @@ type
     deposits*: List[Deposit, Limit MAX_DEPOSITS]
     voluntary_exits*: List[SignedVoluntaryExit, Limit MAX_VOLUNTARY_EXITS]
     sync_aggregate*: SyncAggregate
-    signed_execution_payload_header*: SignedExecutionPayloadHeader
     bls_to_execution_changes*:
-      List[SignedBLSToExecutionChange,
-        Limit MAX_BLS_TO_EXECUTION_CHANGES]
+      List[SignedBLSToExecutionChange, Limit MAX_BLS_TO_EXECUTION_CHANGES]
+    signed_execution_payload_header*: SignedExecutionPayloadHeader
+    payload_attestations*: List[PayloadAttestation, Limit MAX_PAYLOAD_ATTESTATIONS]
     # blob_kzg_commitments*: KzgCommitments # [New in Deneb]
     # execution_requests*: ExecutionRequests # [New in Electra]
 
@@ -124,6 +124,7 @@ func toSignedBlindedBeaconBlock*(blck: fulu.SignedBeaconBlock):
         deposits: blck.message.body.deposits,
         voluntary_exits: blck.message.body.voluntary_exits,
         sync_aggregate: blck.message.body.sync_aggregate,
+        bls_to_execution_changes: blck.message.body.bls_to_execution_changes,
         signed_execution_payload_header: SignedExecutionPayloadHeader(
           message: ExecutionPayloadHeader(
             parent_block_hash: blck.message.body.signed_execution_payload_header.message.parent_block_hash,
@@ -135,6 +136,6 @@ func toSignedBlindedBeaconBlock*(blck: fulu.SignedBeaconBlock):
             blob_kzg_commitments_root: blck.message.body.signed_execution_payload_header.message.blob_kzg_commitments_root,
             block_hash: blck.message.body.signed_execution_payload_header.message.block_hash
           ),
-          signature: blck.signature),
-        bls_to_execution_changes: blck.message.body.bls_to_execution_changes)),
+          signature: blck.message.body.signed_execution_payload_header.signature),
+        payload_attestations: blck.message.body.payload_attestations)),
     signature: blck.signature)
diff --git a/beacon_chain/spec/network.nim b/beacon_chain/spec/network.nim
index f6564dc4fc..91b7ab0f41 100644
--- a/beacon_chain/spec/network.nim
+++ b/beacon_chain/spec/network.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/signatures.nim b/beacon_chain/spec/signatures.nim
index b2ab7a0997..10c5340951 100644
--- a/beacon_chain/spec/signatures.nim
+++ b/beacon_chain/spec/signatures.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/state_transition.nim b/beacon_chain/spec/state_transition.nim
index c0d30d0694..1e8d0e5fd5 100644
--- a/beacon_chain/spec/state_transition.nim
+++ b/beacon_chain/spec/state_transition.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 3e91f3f92a..80c6f05a37 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/sync/request_manager.nim b/beacon_chain/sync/request_manager.nim
index f35d7e030b..608d7e9d5f 100644
--- a/beacon_chain/sync/request_manager.nim
+++ b/beacon_chain/sync/request_manager.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/sync/sync_manager.nim b/beacon_chain/sync/sync_manager.nim
index 77be5bd511..e15f161697 100644
--- a/beacon_chain/sync/sync_manager.nim
+++ b/beacon_chain/sync/sync_manager.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/validators/beacon_validators.nim b/beacon_chain/validators/beacon_validators.nim
index 953c1cb695..b9f0b8c383 100644
--- a/beacon_chain/validators/beacon_validators.nim
+++ b/beacon_chain/validators/beacon_validators.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/validators/message_router.nim b/beacon_chain/validators/message_router.nim
index 4321f4d2b3..f0b402b744 100644
--- a/beacon_chain/validators/message_router.nim
+++ b/beacon_chain/validators/message_router.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/beacon_chain/validators/message_router_mev.nim b/beacon_chain/validators/message_router_mev.nim
index 39efdbe720..43dff7e115 100644
--- a/beacon_chain/validators/message_router_mev.nim
+++ b/beacon_chain/validators/message_router_mev.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/ncli/ncli_testnet.nim b/ncli/ncli_testnet.nim
index d0367b9ff7..ec8b6bb651 100644
--- a/ncli/ncli_testnet.nim
+++ b/ncli/ncli_testnet.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/research/mev_mock.nim b/research/mev_mock.nim
index be9840babc..9f0d148164 100644
--- a/research/mev_mock.nim
+++ b/research/mev_mock.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2023-2024 Status Research & Development GmbH
+# Copyright (c) 2023-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -50,13 +50,27 @@ proc getParentBlock(restClient: RestClientRef):
         return Opt.none ParentHeaderInfo
 
   withBlck(resp):
-    when consensusFork >= ConsensusFork.Capella:
-      return Opt.some ParentHeaderInfo(
-        block_number: forkyBlck.message.body.execution_payload.block_number,
-        timestamp: forkyBlck.message.body.execution_payload.timestamp)
+    when consensusFork >= ConsensusFork.Capella and 
+      consensusFork < ConsensusFork.Fulu:
+        return Opt.some ParentHeaderInfo(
+          block_number: forkyBlck.message.body.execution_payload.block_number,
+          timestamp: forkyBlck.message.body.execution_payload.timestamp)
     else:
       discard
 
+  # TODO {what is expected of eip-7732 blocks}
+  # withBlck(resp):
+  #   when consensusFork >= ConsensusFork.Fulu:
+  #     return Opt.some ParentHeaderInfo(
+  #       block_: forkyBlck.message.body.signed_execution_payload_header.message, 
+  #       timestamp: forkyBlck.message.signed_execution_payload_header.message)  
+  #   elif consensusFork >= ConsensusFork.Capella:
+  #     return Opt.some ParentHeaderInfo(
+  #       block_number: forkyBlck.message.body.execution_payload.block_number,
+  #       timestamp: forkyBlck.message.body.execution_payload.timestamp)
+  #   else:
+  #     discard
+
 proc getWithdrawals(restClient: RestClientRef):
     Future[Opt[seq[Withdrawal]]] {.async.} =
   let resp: RestResponse[rest_types.GetNextWithdrawalsResponse] =
diff --git a/research/wss_sim.nim b/research/wss_sim.nim
index 72fddb6b75..7b8219556f 100644
--- a/research/wss_sim.nim
+++ b/research/wss_sim.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2022-2024 Status Research & Development GmbH
+# Copyright (c) 2022-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -119,27 +119,28 @@ cli do(validatorsDir: string, secretsDir: string,
   # The EL may otherwise refuse to produce new heads
   elManager.start(syncChain = false)
   withBlck(blck[]):
-    when consensusFork >= ConsensusFork.Bellatrix:
-      if forkyBlck.message.is_execution_block:
-        template payload(): auto = forkyBlck.message.body.execution_payload
-        if not payload.block_hash.isZero:
-          notice "Syncing EL", elUrl, jwtSecret
-          while true:
-            waitFor noCancel sleepAsync(chronos.seconds(2))
-            (waitFor noCancel elManager
-                .newExecutionPayload(forkyBlck.message)).isOkOr:
-              continue
-
-            let (status, _) = waitFor noCancel elManager.forkchoiceUpdated(
-              headBlockHash = payload.block_hash,
-              safeBlockHash = payload.block_hash,
-              finalizedBlockHash = ZERO_HASH,
-              payloadAttributes = Opt.none(consensusFork.PayloadAttributes))
-            if status != PayloadExecutionStatus.valid:
-              continue
-
-            notice "EL synced", elUrl, jwtSecret
-            break
+    when consensusFork >= ConsensusFork.Bellatrix and
+      consensusFork < ConsensusFork.Fulu:
+        if forkyBlck.message.is_execution_block:
+          template payload(): auto = forkyBlck.message.body.execution_payload
+          if not payload.block_hash.isZero:
+            notice "Syncing EL", elUrl, jwtSecret
+            while true:
+              waitFor noCancel sleepAsync(chronos.seconds(2))
+              (waitFor noCancel elManager
+                  .newExecutionPayload(forkyBlck.message)).isOkOr:
+                continue
+
+              let (status, _) = waitFor noCancel elManager.forkchoiceUpdated(
+                headBlockHash = payload.block_hash,
+                safeBlockHash = payload.block_hash,
+                finalizedBlockHash = ZERO_HASH,
+                payloadAttributes = Opt.none(consensusFork.PayloadAttributes))
+              if status != PayloadExecutionStatus.valid:
+                continue
+
+              notice "EL synced", elUrl, jwtSecret
+              break
 
   var
     clock = BeaconClock.init(getStateField(state[], genesis_time)).valueOr:
diff --git a/tests/all_tests.nim b/tests/all_tests.nim
index c9df26277b..28ac4d1e4d 100644
--- a/tests/all_tests.nim
+++ b/tests/all_tests.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -7,7 +7,7 @@
 
 {.push raises: [].}
 
-# All tests except scenarios, which as compiled separately for mainnet and minimal
+# All tests except scenarios, which is compiled separately for mainnet and minimal
 
 import
   ./testutil
diff --git a/tests/consensus_spec/test_fixture_fork_choice.nim b/tests/consensus_spec/test_fixture_fork_choice.nim
index b735640c36..d62a8d534e 100644
--- a/tests/consensus_spec/test_fixture_fork_choice.nim
+++ b/tests/consensus_spec/test_fixture_fork_choice.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -182,12 +182,13 @@ proc stepOnBlock(
        invalidatedHashes: Table[Eth2Digest, Eth2Digest]):
        Result[BlockRef, VerifierError] =
   # 1. Validate blobs
-  when typeof(signedBlock).kind >= ConsensusFork.Deneb:
-    let kzgCommits = signedBlock.message.body.blob_kzg_commitments.asSeq
-    if kzgCommits.len > 0 or blobData.isSome:
-      if blobData.isNone or kzgCommits.validate_blobs(
-          blobData.get.blobs, blobData.get.proofs).isErr:
-        return err(VerifierError.Invalid)
+  when typeof(signedBlock).kind >= ConsensusFork.Deneb and 
+    typeof(signedBlock).kind < ConsensusFork.Fulu:
+      let kzgCommits = signedBlock.message.body.blob_kzg_commitments.asSeq
+      if kzgCommits.len > 0 or blobData.isSome:
+        if blobData.isNone or kzgCommits.validate_blobs(
+            blobData.get.blobs, blobData.get.proofs).isErr:
+          return err(VerifierError.Invalid)
   else:
     doAssert blobData.isNone, "Pre-Deneb test with specified blob data"
 
@@ -209,21 +210,22 @@ proc stepOnBlock(
   # this wouldn't be part of this check, presumably, their FC test vector step
   # would also have `true` validity because it'd not be known they weren't, so
   # adding this mock of the block processor is realistic and sufficient.
-  when consensusFork >= ConsensusFork.Bellatrix:
-    let executionBlockHash =
-      signedBlock.message.body.execution_payload.block_hash
-    if executionBlockHash in invalidatedHashes:
-      # Mocks fork choice INVALID list application. These tests sequence this
-      # in a way the block processor does not, specifying each payload_status
-      # before the block itself, while Nimbus fork choice treats invalidating
-      # a non-existent block root as a no-op and does not remember it for the
-      # future.
-      let lvh = invalidatedHashes.getOrDefault(
-        executionBlockHash, static(default(Eth2Digest)))
-      fkChoice[].mark_root_invalid(dag.getEarliestInvalidBlockRoot(
-        signedBlock.message.parent_root, lvh, executionBlockHash))
-
-      return err VerifierError.Invalid
+  when consensusFork >= ConsensusFork.Bellatrix and 
+    consensusFork >= ConsensusFork.Fulu:
+      let executionBlockHash =
+        signedBlock.message.body.execution_payload.block_hash
+      if executionBlockHash in invalidatedHashes:
+        # Mocks fork choice INVALID list application. These tests sequence this
+        # in a way the block processor does not, specifying each payload_status
+        # before the block itself, while Nimbus fork choice treats invalidating
+        # a non-existent block root as a no-op and does not remember it for the
+        # future.
+        let lvh = invalidatedHashes.getOrDefault(
+          executionBlockHash, static(default(Eth2Digest)))
+        fkChoice[].mark_root_invalid(dag.getEarliestInvalidBlockRoot(
+          signedBlock.message.parent_root, lvh, executionBlockHash))
+
+        return err VerifierError.Invalid
 
   let blockAdded = dag.addHeadBlock(verifier, signedBlock) do (
       blckRef: BlockRef, signedBlock: consensusFork.TrustedSignedBeaconBlock,
diff --git a/tests/test_message_signatures.nim b/tests/test_message_signatures.nim
index 86ade21ba8..3d74a0076b 100644
--- a/tests/test_message_signatures.nim
+++ b/tests/test_message_signatures.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2018-2024 Status Research & Development GmbH
+# Copyright (c) 2018-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -272,4 +272,107 @@ suite "Message signatures":
         fork0, genesis_validators_root0, slot, subcommittee_index,
         load(pubkey0).get, get_sync_committee_selection_proof(
           fork0, genesis_validators_root1, slot,
-          subcommittee_index, privkey0).toValidatorSig)
\ No newline at end of file
+          subcommittee_index, privkey0).toValidatorSig)
+
+  test "execution payload header signatures":
+    let
+      msg = default(fulu.SignedExecutionPayloadHeader)
+      state = default(fulu.BeaconState)
+
+    check:
+      # Matching public/private keys and genesis validator roots
+      verify_execution_payload_header_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_header_signature(
+          fork0, genesis_validators_root0, msg,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched public/private keys
+      not verify_execution_payload_header_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_header_signature(
+          fork0, genesis_validators_root0, msg,
+          state, privkey1).toValidatorSig)
+
+      # Mismatched forks
+      not verify_execution_payload_header_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_header_signature(
+          fork1, genesis_validators_root0, msg,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched genesis validator roots
+      not verify_execution_payload_header_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_header_signature(
+          fork0, genesis_validators_root1, msg,
+          state, privkey0).toValidatorSig)
+
+  test "execution payload envelope signatures":
+    let
+      msg = default(fulu.SignedExecutionPayloadEnvelope)
+      state = default(fulu.BeaconState)
+
+    check:
+      # Matching public/private keys and genesis validator roots
+      verify_execution_payload_envelope_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_envelope_signature(
+          fork0, genesis_validators_root0, msg,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched public/private keys
+      not verify_execution_payload_envelope_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_envelope_signature(
+          fork0, genesis_validators_root0, msg,
+          state, privkey1).toValidatorSig)
+
+      # Mismatched forks
+      not verify_execution_payload_envelope_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_envelope_signature(
+          fork1, genesis_validators_root0, msg,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched genesis validator roots
+      not verify_execution_payload_envelope_signature(
+        fork0, genesis_validators_root0, msg, state,
+        load(pubkey0).get, get_execution_payload_envelope_signature(
+          fork0, genesis_validators_root1, msg,
+          state, privkey0).toValidatorSig)
+
+  test "execution payload attestation signatures":
+    let
+      slot = default(Slot)
+      attestation = default(fulu.PayloadAttestationMessage)
+      state = default(fulu.BeaconState)
+
+    check:
+      # Matching public/private keys and genesis validator roots
+      verify_payload_attestation_message_signature(
+        fork0, genesis_validators_root0, attestation, state,
+        load(pubkey0).get, get_payload_attestation_message_signature(
+          fork0, genesis_validators_root0, attestation,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched public/private keys
+      not verify_payload_attestation_message_signature(
+        fork0, genesis_validators_root0, attestation, state,
+        load(pubkey0).get, get_payload_attestation_message_signature(
+          fork0, genesis_validators_root0, attestation,
+          state, privkey1).toValidatorSig)
+
+      # Mismatched forks
+      not verify_payload_attestation_message_signature(
+        fork0, genesis_validators_root0, attestation, state,
+        load(pubkey0).get, get_payload_attestation_message_signature(
+          fork1, genesis_validators_root0, attestation,
+          state, privkey0).toValidatorSig)
+
+      # Mismatched genesis validator roots
+      not verify_payload_attestation_message_signature(
+        fork0, genesis_validators_root0, attestation, state,
+        load(pubkey0).get, get_payload_attestation_message_signature(
+          fork0, genesis_validators_root1, attestation,
+          state, privkey0).toValidatorSig)
diff --git a/tests/test_sync_manager.nim b/tests/test_sync_manager.nim
index 256e9c2af4..531693cfa7 100644
--- a/tests/test_sync_manager.nim
+++ b/tests/test_sync_manager.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2020-2024 Status Research & Development GmbH
+# Copyright (c) 2020-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
diff --git a/tests/test_toblindedblock.nim b/tests/test_toblindedblock.nim
index ed7768ea2f..b0736631bc 100644
--- a/tests/test_toblindedblock.nim
+++ b/tests/test_toblindedblock.nim
@@ -1,5 +1,5 @@
 # beacon_chain
-# Copyright (c) 2024 Status Research & Development GmbH
+# Copyright (c) 2024-2025 Status Research & Development GmbH
 # Licensed and distributed under either of
 #   * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
 #   * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
@@ -136,18 +136,6 @@ template electra_steps() =
       default(ConsolidationRequest))
     do_check
 
-template fulu_steps() =
-  when consensusFork < ConsensusFork.Fulu:
-    check: b.message.body.execution_requests.deposits.add(
-      default(DepositRequest))
-    do_check
-    check: b.message.body.execution_requests.withdrawals.add(
-      default(WithdrawalRequest))
-    do_check
-    check: b.message.body.execution_requests.consolidations.add(
-      default(ConsolidationRequest))
-    do_check
-
 suite "Blinded block conversions":
   withAll(ConsensusFork):
     when consensusFork >= ConsensusFork.Bellatrix: