e44bcfa90b
Previous to this commit, the max blob count for EIP7594 was 8. Now that we have raised the target/max to 6/9 for Electra, the max blob count for EIP7594 no longer makes sense. I've raised the target/max for it to 9/12 as a placeholder. This also serves as an example of what changes are necessary to increase the blob count in the future.
2.9 KiB
EIP7594 -- Honest Validator
Table of contents
Introduction
This document represents the changes to be made in the code of an "honest validator" to implement EIP7594.
Prerequisites
This document is an extension of the Electra -- Honest Validator guide. All behaviors and definitions defined in this document, and documents it extends, carry over unless explicitly noted or overridden.
All terminology, constants, functions, and protocol mechanics defined in the updated Beacon Chain doc of EIP7594 are requisite for this document and used throughout. Please see related Beacon Chain doc before continuing and use them as a reference throughout.
Block proposal
Constructing the BeaconBlockBody
Execution payload
prepare_execution_payload is updated from the Electra specs.
Note: In this section, state is the state of the slot for the block proposal without the block yet applied.
That is, state is the previous_state processed through any empty slots up to the assigned slot using process_slots(previous_state, slot).
``python def prepare_execution_payload(state: BeaconState, safe_block_hash: Hash32, finalized_block_hash: Hash32, suggested_fee_recipient: ExecutionAddress, execution_engine: ExecutionEngine) -> Optional[PayloadId]: # Verify consistency of the parent hash with respect to the previous execution payload header parent_hash = state.latest_execution_payload_header.block_hash
# Set the forkchoice head and initiate the payload build process
withdrawals, _ = get_expected_withdrawals(state)
payload_attributes = PayloadAttributes(
timestamp=compute_timestamp_at_slot(state, state.slot),
prev_randao=get_randao_mix(state, get_current_epoch(state)),
suggested_fee_recipient=suggested_fee_recipient,
withdrawals=withdrawals,
parent_beacon_block_root=hash_tree_root(state.latest_block_header),
target_blobs_per_block=TARGET_BLOBS_PER_BLOCK_EIP7594, # [Modified in EIP7594]
max_blobs_per_block=MAX_BLOBS_PER_BLOCK_EIP7594, # [Modified in EIP7594]
)
return execution_engine.notify_forkchoice_updated(
head_block_hash=parent_hash,
safe_block_hash=safe_block_hash,
finalized_block_hash=finalized_block_hash,
payload_attributes=payload_attributes,
)