ramify the new ELECTRA blob settings through more; add single_attestation event queue; add initial vanity logs phrasing

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

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]

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).

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`
 

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,

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

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,

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(

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()

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
 

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,

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

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).
@@ -1721,15 +1721,18 @@ 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,
                                        InvalidSidecarIndexValueError)
 
     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
 

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)),
 

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]]

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.}

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 =

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

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