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EIP-8279 Block Access List Byte Floor

DraftCorecreated 2026-05-23requires EIP-7623, EIP-7702, EIP-7928, EIP-7976, EIP-7981, EIP-8131

Meter EIP-7928 Block Access List bytes at runtime and fold them into the EIP-7623 transaction floor, capping worst-case block size.

Author: Toni Wahrstätter (@nerolation)

Depends on (6)

Proposals this one names in its requires field.

EIP-7623Increase calldata costEIP-7702Set Code for EOAsEIP-7928Block-Level Access ListsEIP-7976Increase Calldata Floor CostEIP-7981Increase Access List CostEIP-8131Unified Transaction Content Floor

What the specification covers

AbstractMotivationSpecificationConstantsData meter and floor accumulatorStatic floor seedRuntime data meteringFinal chargeSystem transactions and withdrawalsRationaleFloor side, not intrinsic sideRuntime extensions cannot make the floor bind on their ownOne per-byte rateMeter before; refund only when bytes leave the BALPer-auth coverage is staticCounter, not a reservationmax(execution, floor) preservedBackwards CompatibilityTest CasesBare ETH transferCold SLOAD bypass attemptCold SSTORE (zero → non-zero)Net-zero SSTORE round-tripRepeated distinct writesReverted CALL with valueSecurity ConsiderationsBlock-size boundRevertsRepeated writes to the same slotGas estimationCopyright

This proposal declares no Solidity interface, so there is nothing to compute. It may be a core protocol change, a meta proposal, or written in prose only.

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