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EIP-8188 Last-Written Block for Accounts and Slots

DraftCorecreated 2026-03-102 later proposals build on itrequires EIP-8037

Records the last-written block number of each account and storage slot as consensus-level state metadata.

Authors: Wei Han Ng (@weiihann), Amirul Ashraf (@asdacap), Guillaume Ballet (@gballet), Maria Silva (@misilva73), Gary Rong (@rjl493456442), Carlos Perez (@CPerezz), Jochem Brouwer (@jochem-brouwer)

Depends on (1)

Proposals this one names in its requires field.

EIP-8037State Creation Gas Cost Increase

Built on by (2)

Later proposals that name this one in their requires field.

EIP-8295State Tiering by PeriodsEIP-8296Fixed-Cutoff State Tiering

What the specification covers

AbstractMotivationSpecificationEncoding ChangesAccount RLP ChangeStorage Slot Encoding ChangeBlock Update RuleStorage slot rulesAccount rulesReadsRevertsRationaleHow can clients utilize the write-age metadata?Why record the block number directly?Why do reads not update the block?How does extra metadata affect the state size?Relation with state creation cost ([EIP-8037](./eip-8037.md))Backwards CompatibilitySecurity ConsiderationsCopyright

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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