Notice: This document is a work-in-progress for researchers and implementers.
This document describes the process of the Electra upgrade.
Warning: this configuration is not definitive.
| Name | Value |
|---|---|
ELECTRA_FORK_VERSION |
Version('0x05000000') |
ELECTRA_FORK_EPOCH |
Epoch(18446744073709551615) TBD |
def compute_fork_version(epoch: Epoch) -> Version:
"""
Return the fork version at the given ``epoch``.
"""
if epoch >= ELECTRA_FORK_EPOCH:
return ELECTRA_FORK_VERSION
if epoch >= DENEB_FORK_EPOCH:
return DENEB_FORK_VERSION
if epoch >= CAPELLA_FORK_EPOCH:
return CAPELLA_FORK_VERSION
if epoch >= BELLATRIX_FORK_EPOCH:
return BELLATRIX_FORK_VERSION
if epoch >= ALTAIR_FORK_EPOCH:
return ALTAIR_FORK_VERSION
return GENESIS_FORK_VERSIONTBD. This fork is defined for testing purposes, the EIP may be combined with other consensus-layer upgrade.
For now, we assume the condition will be triggered at epoch ELECTRA_FORK_EPOCH.
Note that for the pure Electra networks, we don't apply upgrade_to_electra since it starts with Electra version logic.
If state.slot % SLOTS_PER_EPOCH == 0 and compute_epoch_at_slot(state.slot) == ELECTRA_FORK_EPOCH,
an irregular state change is made to upgrade to Electra.
def upgrade_to_electra(pre: deneb.BeaconState) -> BeaconState:
epoch = deneb.get_current_epoch(pre)
latest_execution_payload_header = ExecutionPayloadHeader(
parent_hash=pre.latest_execution_payload_header.parent_hash,
fee_recipient=pre.latest_execution_payload_header.fee_recipient,
state_root=pre.latest_execution_payload_header.state_root,
receipts_root=pre.latest_execution_payload_header.receipts_root,
logs_bloom=pre.latest_execution_payload_header.logs_bloom,
prev_randao=pre.latest_execution_payload_header.prev_randao,
block_number=pre.latest_execution_payload_header.block_number,
gas_limit=pre.latest_execution_payload_header.gas_limit,
gas_used=pre.latest_execution_payload_header.gas_used,
timestamp=pre.latest_execution_payload_header.timestamp,
extra_data=pre.latest_execution_payload_header.extra_data,
base_fee_per_gas=pre.latest_execution_payload_header.base_fee_per_gas,
block_hash=pre.latest_execution_payload_header.block_hash,
transactions_root=pre.latest_execution_payload_header.transactions_root,
withdrawals_root=pre.latest_execution_payload_header.withdrawals_root,
blob_gas_used=pre.latest_execution_payload_header.blob_gas_used,
excess_blob_gas=pre.latest_execution_payload_header.excess_blob_gas,
deposit_receipts_root=Root(), # [New in Electra:EIP6110]
withdrawal_requests_root=Root(), # [New in Electra:EIP7002],
)
exit_epochs = [v.exit_epoch for v in pre.validators if v.exit_epoch != FAR_FUTURE_EPOCH]
if not exit_epochs:
exit_epochs = [get_current_epoch(pre)]
earliest_exit_epoch = max(exit_epochs) + 1
post = BeaconState(
# Versioning
genesis_time=pre.genesis_time,
genesis_validators_root=pre.genesis_validators_root,
slot=pre.slot,
fork=Fork(
previous_version=pre.fork.current_version,
current_version=ELECTRA_FORK_VERSION, # [Modified in Electra:EIP6110]
epoch=epoch,
),
# History
latest_block_header=pre.latest_block_header,
block_roots=pre.block_roots,
state_roots=pre.state_roots,
historical_roots=pre.historical_roots,
# Eth1
eth1_data=pre.eth1_data,
eth1_data_votes=pre.eth1_data_votes,
eth1_deposit_index=pre.eth1_deposit_index,
# Registry
validators=pre.validators,
balances=pre.balances,
# Randomness
randao_mixes=pre.randao_mixes,
# Slashings
slashings=pre.slashings,
# Participation
previous_epoch_participation=pre.previous_epoch_participation,
current_epoch_participation=pre.current_epoch_participation,
# Finality
justification_bits=pre.justification_bits,
previous_justified_checkpoint=pre.previous_justified_checkpoint,
current_justified_checkpoint=pre.current_justified_checkpoint,
finalized_checkpoint=pre.finalized_checkpoint,
# Inactivity
inactivity_scores=pre.inactivity_scores,
# Sync
current_sync_committee=pre.current_sync_committee,
next_sync_committee=pre.next_sync_committee,
# Execution-layer
latest_execution_payload_header=latest_execution_payload_header, # [Modified in Electra:EIP6110:EIP7002]
# Withdrawals
next_withdrawal_index=pre.next_withdrawal_index,
next_withdrawal_validator_index=pre.next_withdrawal_validator_index,
# Deep history valid from Capella onwards
historical_summaries=pre.historical_summaries,
# [New in Electra:EIP6110]
deposit_receipts_start_index=UNSET_DEPOSIT_RECEIPTS_START_INDEX,
# [New in Electra:EIP7251]
deposit_balance_to_consume=0,
exit_balance_to_consume=0,
earliest_exit_epoch=earliest_exit_epoch,
consolidation_balance_to_consume=0,
earliest_consolidation_epoch=compute_activation_exit_epoch(get_current_epoch(pre)),
pending_balance_deposits=[],
pending_partial_withdrawals=[],
pending_consolidations=[],
)
post.exit_balance_to_consume = get_activation_exit_churn_limit(post)
post.consolidation_balance_to_consume = get_consolidation_churn_limit(post)
# [New in Electra:EIP7251]
# add validators that are not yet active to pending balance deposits
pre_activation = sorted([
index for index, validator in enumerate(post.validators)
if validator.activation_epoch == FAR_FUTURE_EPOCH
], key=lambda index: (
post.validators[index].activation_eligibility_epoch,
index
))
for index in pre_activation:
queue_entire_balance_and_reset_validator(post, ValidatorIndex(index))
# Ensure early adopters of compounding credentials go through the activation churn
for index, validator in enumerate(post.validators):
if has_compounding_withdrawal_credential(validator):
queue_excess_active_balance(post, ValidatorIndex(index))
return post