diff --git a/beacon_chain/beacon_chain_db_immutable.nim b/beacon_chain/beacon_chain_db_immutable.nim
index d51d9f8bc9..71f25fcdcf 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).
@@ -132,7 +132,7 @@ type
     current_sync_committee*: SyncCommittee     # [New in Altair]
     next_sync_committee*: SyncCommittee        # [New in Altair]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#beaconstate
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/bellatrix/beacon-chain.md#beaconstate
   # Memory-representation-equivalent to a Bellatrix BeaconState for in-place SSZ
   # reading and writing
   BellatrixBeaconStateNoImmutableValidators* = object
diff --git a/beacon_chain/beacon_node.nim b/beacon_chain/beacon_node.nim
index 0017eef2d9..bb989f2d36 100644
--- a/beacon_chain/beacon_node.nim
+++ b/beacon_chain/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).
@@ -47,6 +47,7 @@ type
     headQueue*: AsyncEventQueue[HeadChangeInfoObject]
     blocksQueue*: AsyncEventQueue[EventBeaconBlockObject]
     attestQueue*: AsyncEventQueue[phase0.Attestation]
+    singleAttestQueue*: AsyncEventQueue[SingleAttestation]
     exitQueue*: AsyncEventQueue[SignedVoluntaryExit]
     blsToExecQueue*: AsyncEventQueue[SignedBLSToExecutionChange]
     propSlashQueue*: AsyncEventQueue[ProposerSlashing]
diff --git a/beacon_chain/consensus_object_pools/README.md b/beacon_chain/consensus_object_pools/README.md
index b054883c02..7f3129b9f9 100644
--- a/beacon_chain/consensus_object_pools/README.md
+++ b/beacon_chain/consensus_object_pools/README.md
@@ -9,7 +9,7 @@ to specs:
 - unaggregated attestation: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
 - voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#voluntary_exit
 - Attester slashings: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#attester_slashing
-- Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/phase0/p2p-interface.md#proposer_slashing
+- Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#proposer_slashing
 
 After "gossip validation" the consensus objects can be rebroadcasted as they are optimistically good, however for internal processing further verification is needed.
 For blocks, this means verifying state transition and all contained cryptographic signatures (instead of just the proposer signature).
diff --git a/beacon_chain/consensus_object_pools/blob_quarantine.nim b/beacon_chain/consensus_object_pools/blob_quarantine.nim
index 7bbffd11b6..e202c8722d 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).
@@ -15,7 +15,7 @@ from std/sequtils import mapIt
 from std/strutils import join
 
 const
-  MaxBlobs = 3 * SLOTS_PER_EPOCH * MAX_BLOBS_PER_BLOCK
+  MaxBlobs = 3 * SLOTS_PER_EPOCH * MAX_BLOBS_PER_BLOCK_ELECTRA
     ## Same limit as `MaxOrphans` in `block_quarantine`;
     ## blobs may arrive before an orphan is tagged `blobless`
 
diff --git a/beacon_chain/el/eth1_chain.nim b/beacon_chain/el/eth1_chain.nim
index ea04724e6d..73ee1662bb 100644
--- a/beacon_chain/el/eth1_chain.nim
+++ b/beacon_chain/el/eth1_chain.nim
@@ -274,7 +274,7 @@ proc trackFinalizedState*(chain: var Eth1Chain,
   if result:
     chain.pruneOldBlocks(finalizedStateDepositIndex)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/validator.md#get_eth1_data
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/validator.md#get_eth1_data
 proc getBlockProposalData*(chain: var Eth1Chain,
                            state: ForkedHashedBeaconState,
                            finalizedEth1Data: Eth1Data,
diff --git a/beacon_chain/gossip_processing/README.md b/beacon_chain/gossip_processing/README.md
index 321890ea41..88890e6c89 100644
--- a/beacon_chain/gossip_processing/README.md
+++ b/beacon_chain/gossip_processing/README.md
@@ -10,7 +10,7 @@ This folder holds a collection of modules to:
 Gossip validation is different from consensus verification in particular for blocks.
 
 - Blocks: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#beacon_block
-- Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
+- Attestations (aggregated): https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
 - Attestations (unaggregated): https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#attestation-subnets
 - Voluntary exits: https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.4/specs/phase0/p2p-interface.md#voluntary_exit
 - Proposer slashings: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/phase0/p2p-interface.md#proposer_slashing
diff --git a/beacon_chain/gossip_processing/gossip_validation.nim b/beacon_chain/gossip_processing/gossip_validation.nim
index 4cfeaaa469..4f0379f50a 100644
--- a/beacon_chain/gossip_processing/gossip_validation.nim
+++ b/beacon_chain/gossip_processing/gossip_validation.nim
@@ -1504,7 +1504,7 @@ proc validateVoluntaryExit*(
 
   ok()
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.1/specs/altair/p2p-interface.md#sync_committee_subnet_id
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/p2p-interface.md#sync_committee_subnet_id
 proc validateSyncCommitteeMessage*(
     dag: ChainDAGRef,
     quarantine: ref Quarantine,
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.h b/beacon_chain/libnimbus_lc/libnimbus_lc.h
index d8789ee760..b3fe7979b5 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.h
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.h
@@ -672,7 +672,7 @@ void ETHLightClientHeaderDestroy(ETHLightClientHeader *header);
  *
  * @return Pointer to a copy of the given header's beacon block root.
  *
- * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#hash_tree_root
+ * @see https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#hash_tree_root
  */
 ETH_RESULT_USE_CHECK
 ETHRoot *ETHLightClientHeaderCopyBeaconRoot(
diff --git a/beacon_chain/libnimbus_lc/libnimbus_lc.nim b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
index a3bae496a8..9795999d77 100644
--- a/beacon_chain/libnimbus_lc/libnimbus_lc.nim
+++ b/beacon_chain/libnimbus_lc/libnimbus_lc.nim
@@ -145,7 +145,7 @@ proc ETHBeaconStateCreateFromSsz(
   ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/beacon-chain.md#beaconstate
   ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#beaconstate
   ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/capella/beacon-chain.md#beaconstate
-  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/configs/README.md
+  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/configs/README.md
   let
     consensusFork = ConsensusFork.decodeString($consensusVersion).valueOr:
       return nil
@@ -841,7 +841,7 @@ proc ETHLightClientHeaderCopyBeaconRoot(
   ## * Pointer to a copy of the given header's beacon block root.
   ##
   ## See:
-  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#hash_tree_root
+  ## * https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#hash_tree_root
   discard cfg  # Future-proof against new fields, see `get_lc_execution_root`.
   let root = Eth2Digest.new()
   root[] = header[].beacon.hash_tree_root()
diff --git a/beacon_chain/networking/eth2_network.nim b/beacon_chain/networking/eth2_network.nim
index fb5c6517b7..e8760c7662 100644
--- a/beacon_chain/networking/eth2_network.nim
+++ b/beacon_chain/networking/eth2_network.nim
@@ -2584,7 +2584,7 @@ proc broadcast(node: Eth2Node, topic: string, msg: auto):
 
 proc subscribeAttestationSubnets*(
     node: Eth2Node, subnets: AttnetBits, forkDigest: ForkDigest) =
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/phase0/p2p-interface.md#attestations-and-aggregation
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#attestations-and-aggregation
   # Nimbus won't score attestation subnets for now, we just rely on block and
   # aggregate which are more stable and reliable
 
@@ -2595,10 +2595,7 @@ proc subscribeAttestationSubnets*(
 
 proc unsubscribeAttestationSubnets*(
     node: Eth2Node, subnets: AttnetBits, forkDigest: ForkDigest) =
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/phase0/p2p-interface.md#attestations-and-aggregation
-  # Nimbus won't score attestation subnets for now; we just rely on block and
-  # aggregate which are more stable and reliable
-
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#attestations-and-aggregation
   for subnet_id, enabled in subnets:
     if enabled:
       node.unsubscribe(getAttestationTopic(forkDigest, SubnetId(subnet_id)))
@@ -2611,7 +2608,7 @@ proc updateStabilitySubnetMetadata*(node: Eth2Node, attnets: AttnetBits) =
   node.metadata.seq_number += 1
   node.metadata.attnets = attnets
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/phase0/p2p-interface.md#attestation-subnet-subscription
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#attestation-subnet-subscription
   # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#attestation-subnet-bitfield
   let res = node.discovery.updateRecord({
     enrAttestationSubnetsField: SSZ.encode(node.metadata.attnets)
@@ -2638,7 +2635,7 @@ proc loadCgcnetMetadataAndEnr*(node: Eth2Node, cgcnets: CgcCount) =
     debug "Updated ENR cgc", cgcnets
 
 proc updateSyncnetsMetadata*(node: Eth2Node, syncnets: SyncnetBits) =
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/altair/validator.md#sync-committee-subnet-stability
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/validator.md#sync-committee-subnet-stability
   if node.metadata.syncnets == syncnets:
     return
 
diff --git a/beacon_chain/networking/peer_protocol.nim b/beacon_chain/networking/peer_protocol.nim
index 9c6d32486d..f81ad3b68d 100644
--- a/beacon_chain/networking/peer_protocol.nim
+++ b/beacon_chain/networking/peer_protocol.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).
@@ -54,7 +54,7 @@ func forkDigestAtEpoch(state: PeerSyncNetworkState,
                        epoch: Epoch): ForkDigest =
   state.forkDigests[].atEpoch(epoch, state.cfg)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/p2p-interface.md#status
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/p2p-interface.md#status
 proc getCurrentStatus(state: PeerSyncNetworkState): StatusMsg =
   let
     dag = state.dag
@@ -249,7 +249,7 @@ proc init*(T: type PeerSync.NetworkState,
     getBeaconTime: getBeaconTime,
   )
 
-proc init*(T: type PeerSync.NetworkState,
+func init*(T: type PeerSync.NetworkState,
                      cfg: RuntimeConfig,
                      forkDigests: ref ForkDigests,
                      genesisBlockRoot: Eth2Digest,
diff --git a/beacon_chain/nimbus_beacon_node.nim b/beacon_chain/nimbus_beacon_node.nim
index 7aaf93ca48..5f758ac87c 100644
--- a/beacon_chain/nimbus_beacon_node.nim
+++ b/beacon_chain/nimbus_beacon_node.nim
@@ -173,7 +173,7 @@ func getVanityLogs(stdoutKind: StdoutLogKind): VanityLogs =
       onUpgradeToDeneb:
         (proc() = notice "🐟 Proto-Danksharding is ON 🐟"),
       onUpgradeToElectra:
-        (proc() = notice "🦒 [PH] Electra 🦒"))
+        (proc() = notice "🦒 Compounding is ON 🦒"))
 
 func getVanityMascot(consensusFork: ConsensusFork): string =
   case consensusFork
@@ -298,7 +298,7 @@ proc initFullNode(
   proc onPhase0AttestationReceived(data: phase0.Attestation) =
     node.eventBus.attestQueue.emit(data)
   proc onSingleAttestationReceived(data: SingleAttestation) =
-    debugComment "electra attestation queue"
+    node.eventBus.singleAttestQueue.emit(data)
   proc onSyncContribution(data: SignedContributionAndProof) =
     node.eventBus.contribQueue.emit(data)
   proc onVoluntaryExitAdded(data: SignedVoluntaryExit) =
@@ -737,6 +737,7 @@ proc init*(T: type BeaconNode,
       headQueue: newAsyncEventQueue[HeadChangeInfoObject](),
       blocksQueue: newAsyncEventQueue[EventBeaconBlockObject](),
       attestQueue: newAsyncEventQueue[phase0.Attestation](),
+      singleAttestQueue: newAsyncEventQueue[SingleAttestation](),
       exitQueue: newAsyncEventQueue[SignedVoluntaryExit](),
       blsToExecQueue: newAsyncEventQueue[SignedBLSToExecutionChange](),
       propSlashQueue: newAsyncEventQueue[ProposerSlashing](),
@@ -2058,7 +2059,7 @@ proc installMessageValidators(node: BeaconNode) =
                     MsgSource.gossip, msg, idx)))
 
         # sync_committee_contribution_and_proof
-        # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/p2p-interface.md#sync_committee_contribution_and_proof
+        # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/p2p-interface.md#sync_committee_contribution_and_proof
         node.network.addAsyncValidator(
           getSyncCommitteeContributionAndProofTopic(digest), proc (
             msg: SignedContributionAndProof
diff --git a/beacon_chain/rpc/rest_beacon_api.nim b/beacon_chain/rpc/rest_beacon_api.nim
index 1800649cec..660d295d63 100644
--- a/beacon_chain/rpc/rest_beacon_api.nim
+++ b/beacon_chain/rpc/rest_beacon_api.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).
@@ -1721,7 +1721,10 @@ proc installBeaconApiHandlers*(router: var RestRouter, node: BeaconNode) =
         res.get()
 
     # https://github.com/ethereum/beacon-APIs/blob/v2.4.2/types/deneb/blob_sidecar.yaml#L2-L28
-    let data = newClone(default(List[BlobSidecar, Limit MAX_BLOBS_PER_BLOCK]))
+    # Define a list which allows for a larger-than-Deneb-valid blobs per block,
+    # per https://github.com/ethereum/beacon-APIs/pull/488 and for pre-Electra,
+    # those blobs just won't exist.
+    let data = newClone(default(List[BlobSidecar, Limit MAX_BLOBS_PER_BLOCK_ELECTRA]))
 
     if indices.isErr:
       return RestApiResponse.jsonError(Http400,
@@ -1729,7 +1732,7 @@ proc installBeaconApiHandlers*(router: var RestRouter, node: BeaconNode) =
 
     let indexFilter = indices.get.toHashSet
 
-    for blobIndex in 0'u64 ..< MAX_BLOBS_PER_BLOCK:
+    for blobIndex in 0'u64 ..< MAX_BLOBS_PER_BLOCK_ELECTRA:
       if indexFilter.len > 0 and blobIndex notin indexFilter:
         continue
 
diff --git a/beacon_chain/rpc/rest_config_api.nim b/beacon_chain/rpc/rest_config_api.nim
index a1f19695f1..7e5663a901 100644
--- a/beacon_chain/rpc/rest_config_api.nim
+++ b/beacon_chain/rpc/rest_config_api.nim
@@ -139,6 +139,8 @@ proc installConfigApiHandlers*(router: var RestRouter, node: BeaconNode) =
             Base10.toString(MAX_BLOB_COMMITMENTS_PER_BLOCK),
           MAX_BLOBS_PER_BLOCK:
             Base10.toString(MAX_BLOBS_PER_BLOCK),
+          MAX_BLOBS_PER_BLOCK_ELECTRA:
+            Base10.toString(MAX_BLOBS_PER_BLOCK_ELECTRA),
           KZG_COMMITMENT_INCLUSION_PROOF_DEPTH:
             Base10.toString(uint64(KZG_COMMITMENT_INCLUSION_PROOF_DEPTH)),
 
diff --git a/beacon_chain/rpc/rest_event_api.nim b/beacon_chain/rpc/rest_event_api.nim
index 110b28c25c..ca2fe34ed9 100644
--- a/beacon_chain/rpc/rest_event_api.nim
+++ b/beacon_chain/rpc/rest_event_api.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).
@@ -114,6 +114,7 @@ proc installEventApiHandlers*(router: var RestRouter, node: BeaconNode) =
       # so there no need to respond with HTTP error response.
       return
 
+    debugComment "add single_attestation handler"
     let handlers =
       block:
         var res: seq[Future[void]]
diff --git a/beacon_chain/spec/beacon_time.nim b/beacon_chain/spec/beacon_time.nim
index 4171c9fa3e..7bcf0c005a 100644
--- a/beacon_chain/spec/beacon_time.nim
+++ b/beacon_chain/spec/beacon_time.nim
@@ -46,10 +46,12 @@ const
   # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/fork-choice.md#constant
   INTERVALS_PER_SLOT* = 3
 
-  FAR_FUTURE_BEACON_TIME* = BeaconTime(ns_since_genesis: int64.high())
-
   NANOSECONDS_PER_SLOT* = SECONDS_PER_SLOT * 1_000_000_000'u64
 
+  # Ensure all representable slots are complete
+  FAR_FUTURE_BEACON_TIME* =
+    BeaconTime(ns_since_genesis: int64.high() - NANOSECONDS_PER_SLOT.int64)
+
 template ethTimeUnit*(typ: type) {.dirty.} =
   func `+`*(x: typ, y: uint64): typ {.borrow.}
   func `-`*(x: typ, y: uint64): typ {.borrow.}
diff --git a/beacon_chain/spec/beaconstate.nim b/beacon_chain/spec/beaconstate.nim
index 89061a7093..aaf4744f6b 100644
--- a/beacon_chain/spec/beaconstate.nim
+++ b/beacon_chain/spec/beaconstate.nim
@@ -48,7 +48,7 @@ func is_compounding_withdrawal_credential*(
     withdrawal_credentials: Eth2Digest): bool =
   withdrawal_credentials.data[0] == COMPOUNDING_WITHDRAWAL_PREFIX
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/electra/beacon-chain.md#new-has_compounding_withdrawal_credential
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/electra/beacon-chain.md#new-has_compounding_withdrawal_credential
 func has_compounding_withdrawal_credential*(validator: Validator): bool =
   ## Check if ``validator`` has an 0x02 prefixed "compounding" withdrawal
   ## credential.
@@ -449,7 +449,7 @@ func genesis_time_from_eth1_timestamp(
     cfg: RuntimeConfig, eth1_timestamp: uint64): uint64 =
   eth1_timestamp + cfg.GENESIS_DELAY
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#genesis-block
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#genesis-block
 func get_initial_beacon_block*(state: phase0.HashedBeaconState):
     phase0.TrustedSignedBeaconBlock =
   # The genesis block is implicitly trusted
@@ -1366,7 +1366,7 @@ func switch_to_compounding_validator*(
   validator.withdrawal_credentials.data[0] = COMPOUNDING_WITHDRAWAL_PREFIX
   queue_excess_active_balance(state, index.uint64)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/electra/beacon-chain.md#new-get_pending_balance_to_withdraw
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/electra/beacon-chain.md#new-get_pending_balance_to_withdraw
 func get_pending_balance_to_withdraw*(
     state: electra.BeaconState | fulu.BeaconState,
     validator_index: ValidatorIndex): Gwei =
diff --git a/beacon_chain/spec/datatypes/altair.nim b/beacon_chain/spec/datatypes/altair.nim
index 437807a6b1..0eea9e077d 100644
--- a/beacon_chain/spec/datatypes/altair.nim
+++ b/beacon_chain/spec/datatypes/altair.nim
@@ -96,7 +96,7 @@ type
     sync_committee_bits*: BitArray[SYNC_COMMITTEE_SIZE]
     sync_committee_signature*: TrustedSig
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#synccommittee
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/beacon-chain.md#synccommittee
   SyncCommittee* = object
     pubkeys*: HashArray[Limit SYNC_COMMITTEE_SIZE, ValidatorPubKey]
     aggregate_pubkey*: ValidatorPubKey
diff --git a/beacon_chain/spec/datatypes/base.nim b/beacon_chain/spec/datatypes/base.nim
index 257e891de3..bd97d539be 100644
--- a/beacon_chain/spec/datatypes/base.nim
+++ b/beacon_chain/spec/datatypes/base.nim
@@ -231,7 +231,7 @@ type
     current_version*: Version
     genesis_validators_root*: Eth2Digest
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#checkpoint
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#checkpoint
   Checkpoint* = object
     epoch*: Epoch
     root*: Eth2Digest
@@ -335,12 +335,12 @@ type
 
     proposer_index*: uint64 # `ValidatorIndex` after validation
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#historicalbatch
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#historicalbatch
   HistoricalBatch* = object
     block_roots* : array[SLOTS_PER_HISTORICAL_ROOT, Eth2Digest]
     state_roots* : array[SLOTS_PER_HISTORICAL_ROOT, Eth2Digest]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#fork
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#fork
   Fork* = object
     previous_version*: Version
     current_version*: Version
@@ -354,7 +354,7 @@ type
     deposit_count*: uint64
     block_hash*: Eth2Digest
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/beacon-chain.md#signedvoluntaryexit
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#signedvoluntaryexit
   SignedVoluntaryExit* = object
     message*: VoluntaryExit
     signature*: ValidatorSig
diff --git a/beacon_chain/spec/datatypes/deneb.nim b/beacon_chain/spec/datatypes/deneb.nim
index dd5fa1e738..2e6ccd05ed 100644
--- a/beacon_chain/spec/datatypes/deneb.nim
+++ b/beacon_chain/spec/datatypes/deneb.nim
@@ -53,7 +53,7 @@ type
   # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/deneb/polynomial-commitments.md#custom-types
   Blob* = array[BYTES_PER_FIELD_ELEMENT * FIELD_ELEMENTS_PER_BLOB, byte]
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/deneb/p2p-interface.md#blobsidecar
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/deneb/p2p-interface.md#blobsidecar
   BlobSidecar* = object
     index*: BlobIndex
       ## Index of blob in block
@@ -186,7 +186,7 @@ type
     signature_slot*: Slot
       ## Slot at which the aggregate signature was created (untrusted)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.5/specs/altair/light-client/sync-protocol.md#lightclientfinalityupdate
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/light-client/sync-protocol.md#lightclientfinalityupdate
   LightClientFinalityUpdate* = object
     # Header attested to by the sync committee
     attested_header*: LightClientHeader
@@ -382,7 +382,7 @@ type
     state_root*: Eth2Digest
     body*: TrustedBeaconBlockBody
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/deneb/beacon-chain.md#beaconblockbody
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/deneb/beacon-chain.md#beaconblockbody
   BeaconBlockBody* = object
     randao_reveal*: ValidatorSig
     eth1_data*: Eth1Data
diff --git a/beacon_chain/spec/datatypes/electra.nim b/beacon_chain/spec/datatypes/electra.nim
index 364ba76aac..b55e7c6d10 100644
--- a/beacon_chain/spec/datatypes/electra.nim
+++ b/beacon_chain/spec/datatypes/electra.nim
@@ -148,7 +148,7 @@ type
   ExecutePayload* = proc(
     execution_payload: ExecutionPayload): bool {.gcsafe, raises: [].}
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.7/specs/electra/beacon-chain.md#pendingdeposit
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/electra/beacon-chain.md#pendingdeposit
   PendingDeposit* = object
     pubkey*: ValidatorPubKey
     withdrawal_credentials*: Eth2Digest
diff --git a/beacon_chain/spec/helpers.nim b/beacon_chain/spec/helpers.nim
index bf60fae9f8..621a96f20a 100644
--- a/beacon_chain/spec/helpers.nim
+++ b/beacon_chain/spec/helpers.nim
@@ -76,7 +76,7 @@ func is_exited_validator*(validator: Validator, epoch: Epoch): bool =
 func is_withdrawable_validator*(validator: Validator, epoch: Epoch): bool =
   epoch >= validator.withdrawable_epoch
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#get_active_validator_indices
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#get_active_validator_indices
 iterator get_active_validator_indices*(state: ForkyBeaconState, epoch: Epoch):
     ValidatorIndex =
   for vidx in state.validators.vindices:
@@ -251,7 +251,7 @@ func create_blob_sidecars*(
     res.add(sidecar)
   res
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/light-client/sync-protocol.md#is_sync_committee_update
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/light-client/sync-protocol.md#is_sync_committee_update
 template is_sync_committee_update*(update: SomeForkyLightClientUpdate): bool =
   when update is SomeForkyLightClientUpdateWithSyncCommittee:
     update.next_sync_committee_branch !=
@@ -259,7 +259,7 @@ template is_sync_committee_update*(update: SomeForkyLightClientUpdate): bool =
   else:
     false
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.5/specs/altair/light-client/sync-protocol.md#is_finality_update
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/light-client/sync-protocol.md#is_finality_update
 template is_finality_update*(update: SomeForkyLightClientUpdate): bool =
   when update is SomeForkyLightClientUpdateWithFinality:
     update.finality_branch !=
@@ -267,7 +267,7 @@ template is_finality_update*(update: SomeForkyLightClientUpdate): bool =
   else:
     false
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.3/specs/altair/light-client/sync-protocol.md#is_next_sync_committee_known
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/light-client/sync-protocol.md#is_next_sync_committee_known
 template is_next_sync_committee_known*(store: ForkyLightClientStore): bool =
   store.next_sync_committee !=
     static(default(typeof(store.next_sync_committee)))
@@ -418,7 +418,7 @@ func is_merge_transition_block(
   not is_merge_transition_complete(state) and
     body.execution_payload != defaultExecutionPayload
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#is_execution_enabled
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/bellatrix/beacon-chain.md#is_execution_enabled
 func is_execution_enabled*(
     state: bellatrix.BeaconState | capella.BeaconState | deneb.BeaconState |
            electra.BeaconState | fulu.BeaconState,
diff --git a/beacon_chain/spec/signatures.nim b/beacon_chain/spec/signatures.nim
index f183a91fa5..c5f0ea2ec1 100644
--- a/beacon_chain/spec/signatures.nim
+++ b/beacon_chain/spec/signatures.nim
@@ -355,7 +355,7 @@ proc get_contribution_and_proof_signature*(
 
   blsSign(privkey, signing_root.data)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/altair/validator.md#aggregation-selection
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/validator.md#aggregation-selection
 func is_sync_committee_aggregator*(signature: ValidatorSig): bool =
   let
     signatureDigest = eth2digest(signature.blob)
diff --git a/beacon_chain/spec/state_transition.nim b/beacon_chain/spec/state_transition.nim
index 427d2f7bea..e21bcd4961 100644
--- a/beacon_chain/spec/state_transition.nim
+++ b/beacon_chain/spec/state_transition.nim
@@ -512,7 +512,7 @@ proc makeBeaconBlockWithRewards*(
             transactions_root.get
 
           when executionPayload is deneb.ExecutionPayloadForSigning:
-            # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/deneb/beacon-chain.md#beaconblockbody
+            # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/deneb/beacon-chain.md#beaconblockbody
             forkyState.data.latest_block_header.body_root = hash_tree_root(
               [hash_tree_root(randao_reveal),
                hash_tree_root(eth1_data),
diff --git a/beacon_chain/spec/state_transition_block.nim b/beacon_chain/spec/state_transition_block.nim
index 2519a361fd..1c67c7244b 100644
--- a/beacon_chain/spec/state_transition_block.nim
+++ b/beacon_chain/spec/state_transition_block.nim
@@ -11,7 +11,7 @@
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#block-processing
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/altair/beacon-chain.md#block-processing
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/bellatrix/beacon-chain.md#block-processing
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/capella/beacon-chain.md#block-processing
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/capella/beacon-chain.md#block-processing
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/deneb/beacon-chain.md#block-processing
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.7/specs/electra/beacon-chain.md#block-processing
 #
@@ -82,7 +82,7 @@ func `xor`[T: array](a, b: T): T =
   for i in 0..<result.len:
     result[i] = a[i] xor b[i]
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#randao
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#randao
 proc process_randao(
     state: var ForkyBeaconState, body: SomeForkyBeaconBlockBody,
     flags: UpdateFlags, cache: var StateCache): Result[void, cstring] =
@@ -205,7 +205,7 @@ func is_slashable_attestation_data(
     (data_1.source.epoch < data_2.source.epoch and
      data_2.target.epoch < data_1.target.epoch)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#attester-slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#attester-slashings
 proc check_attester_slashing*(
     state: ForkyBeaconState,
     # phase0.SomeAttesterSlashing | electra.SomeAttesterSlashing:
@@ -385,7 +385,7 @@ func process_deposit_request*(
 
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#voluntary-exits
 # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/deneb/beacon-chain.md#modified-process_voluntary_exit
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.0/specs/electra/beacon-chain.md#updated-process_voluntary_exit
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/electra/beacon-chain.md#modified-process_voluntary_exit
 proc check_voluntary_exit*(
     cfg: RuntimeConfig,
     state: ForkyBeaconState,
@@ -561,7 +561,7 @@ func process_withdrawal_request*(
       withdrawable_epoch: withdrawable_epoch,
     ))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.7/specs/electra/beacon-chain.md#new-is_valid_switch_to_compounding_request
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/electra/beacon-chain.md#new-is_valid_switch_to_compounding_request
 func is_valid_switch_to_compounding_request(
     state: electra.BeaconState | fulu.BeaconState,
     consolidation_request: ConsolidationRequest,
@@ -1213,7 +1213,7 @@ proc process_block*(
 
   ok(? process_operations(cfg, state, blck.body, 0.Gwei, flags, cache))
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/altair/beacon-chain.md#block-processing
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/beacon-chain.md#block-processing
 # TODO workaround for https://github.com/nim-lang/Nim/issues/18095
 # copy of datatypes/altair.nim
 type SomeAltairBlock =
diff --git a/beacon_chain/spec/state_transition_epoch.nim b/beacon_chain/spec/state_transition_epoch.nim
index 28f0454101..ddcc2c103a 100644
--- a/beacon_chain/spec/state_transition_epoch.nim
+++ b/beacon_chain/spec/state_transition_epoch.nim
@@ -995,7 +995,7 @@ func get_adjusted_total_slashing_balance*(
       {.fatal: "process_slashings: incorrect BeaconState type".}
   min(sum(state.slashings.data) * multiplier, total_balance)
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.7/specs/phase0/beacon-chain.md#slashings
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/altair/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/bellatrix/beacon-chain.md#slashings
 # https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.7/specs/electra/beacon-chain.md#modified-process_slashings
@@ -1095,14 +1095,14 @@ func process_effective_balance_updates*(state: var ForkyBeaconState) =
       if new_effective_balance != effective_balance:
         state.validators.mitem(vidx).effective_balance = new_effective_balance
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/beacon-chain.md#slashings-balances-updates
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#slashings-balances-updates
 func process_slashings_reset*(state: var ForkyBeaconState) =
   let next_epoch = get_current_epoch(state) + 1
 
   # Reset slashings
   state.slashings[int(next_epoch mod EPOCHS_PER_SLASHINGS_VECTOR)] = 0.Gwei
 
-# https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#randao-mixes-updates
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#randao-mixes-updates
 func process_randao_mixes_reset*(state: var ForkyBeaconState) =
   let
     current_epoch = get_current_epoch(state)
@@ -1502,7 +1502,7 @@ proc process_epoch*(
   let epoch = get_current_epoch(state)
   info.init(state)
 
-  # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/altair/beacon-chain.md#justification-and-finalization
+  # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/beacon-chain.md#justification-and-finalization
   process_justification_and_finalization(state, info.balances, flags)
 
   # state.slot hasn't been incremented yet.
diff --git a/beacon_chain/spec/weak_subjectivity.nim b/beacon_chain/spec/weak_subjectivity.nim
index d692def3d5..8c272eeddc 100644
--- a/beacon_chain/spec/weak_subjectivity.nim
+++ b/beacon_chain/spec/weak_subjectivity.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).
@@ -10,10 +10,10 @@
 import
   ./datatypes/base, ./beaconstate, ./forks, ./helpers
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/phase0/weak-subjectivity.md#configuration
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/weak-subjectivity.md#configuration
 const SAFETY_DECAY* = 10'u64
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.9/specs/phase0/weak-subjectivity.md#compute_weak_subjectivity_period
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/weak-subjectivity.md#compute_weak_subjectivity_period
 func compute_weak_subjectivity_period(
     cfg: RuntimeConfig, state: ForkyBeaconState): uint64 =
   ## Returns the weak subjectivity period for the current ``state``.
diff --git a/beacon_chain/validators/beacon_validators.nim b/beacon_chain/validators/beacon_validators.nim
index 8f8bbcb128..f79e6915ce 100644
--- a/beacon_chain/validators/beacon_validators.nim
+++ b/beacon_chain/validators/beacon_validators.nim
@@ -1771,7 +1771,7 @@ proc signAndSendAggregate(
     signAndSendAggregatedAttestations()
   else:
     # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/validator.md#construct-aggregate
-    # https://github.com/ethereum/consensus-specs/blob/v1.4.0/specs/phase0/validator.md#aggregateandproof
+    # https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/validator.md#aggregateandproof
     var msg = phase0.SignedAggregateAndProof(
       message: phase0.AggregateAndProof(
         aggregator_index: distinctBase validator_index,
diff --git a/beacon_chain/validators/validator_pool.nim b/beacon_chain/validators/validator_pool.nim
index 647261c89e..777eec6416 100644
--- a/beacon_chain/validators/validator_pool.nim
+++ b/beacon_chain/validators/validator_pool.nim
@@ -226,16 +226,16 @@ func contains*(pool: ValidatorPool, pubkey: ValidatorPubKey): bool =
   ## Returns ``true`` if validator with key ``pubkey`` present in ``pool``.
   pool.validators.contains(pubkey)
 
-proc contains*(pool: ValidatorPool, index: ValidatorIndex): bool =
+func contains*(pool: ValidatorPool, index: ValidatorIndex): bool =
   ## Returns ``true`` if validator with index ``index`` present in ``pool``.
   pool.indexSet.contains(index)
 
-proc setValidatorIndex*(pool: var ValidatorPool, validator: AttachedValidator,
+func setValidatorIndex*(pool: var ValidatorPool, validator: AttachedValidator,
                         index: ValidatorIndex) =
   pool.indexSet.incl(index)
   validator.index = Opt.some(index)
 
-proc removeValidatorIndex(pool: var ValidatorPool, index: ValidatorIndex) =
+func removeValidatorIndex(pool: var ValidatorPool, index: ValidatorIndex) =
   pool.indexSet.excl(index)
 
 proc removeValidator*(pool: var ValidatorPool, pubkey: ValidatorPubKey) =
@@ -882,7 +882,7 @@ proc getSyncCommitteeMessage*(v: AttachedValidator,
     )
   )
 
-# https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.10/specs/altair/validator.md#aggregation-selection
+# https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/altair/validator.md#aggregation-selection
 proc getSyncCommitteeSelectionProof*(v: AttachedValidator, fork: Fork,
                                      genesis_validators_root: Eth2Digest,
                                      slot: Slot,
diff --git a/docs/attestation_flow.md b/docs/attestation_flow.md
index ae90c35e67..afb983584b 100644
--- a/docs/attestation_flow.md
+++ b/docs/attestation_flow.md
@@ -9,7 +9,7 @@ It is important to distinguish attestation `validation` from attestation `verifi
   - Aggregated: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#beacon_aggregate_and_proof
   - Unaggregated: https://github.com/ethereum/consensus-specs/blob/v1.5.0-alpha.8/specs/phase0/p2p-interface.md#beacon_attestation_subnet_id
 - Attestation `verification` is defined in the consensus specs. Verified attestations can affect fork choice and may be included in a block.
-  - https://github.com/ethereum/consensus-specs/blob/v1.4.0-beta.6/specs/phase0/beacon-chain.md#attestations
+  - https://github.com/ethereum/consensus-specs/blob/v1.5.0-beta.0/specs/phase0/beacon-chain.md#attestations
 
 From the specs it seems like gossip attestation `validation` is a superset of consensus attestation `verification`.
 
diff --git a/ncli/resttest-rules.json b/ncli/resttest-rules.json
index 12f8683150..6b087ba473 100644
--- a/ncli/resttest-rules.json
+++ b/ncli/resttest-rules.json
@@ -4180,7 +4180,7 @@
     "response": {
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