feat(specs,tests): EIP-7928 - Update BAL index to uint64#2713
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spencer-tb merged 1 commit intoethereum:forks/amsterdamfrom Apr 20, 2026
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spencer-tb
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LGTM! Would like to get in the next release!
@fselmo, flag if there are any issues from your side :)
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…#20679) Updates the Block Access List index type from `uint16` to `uint32` across the entire stack to future-proof the BAL for higher gas limits (`300M+`) and `EIP-2780` compatibility. The current uint16 index caps out at `65,535` entries per block, which is insufficient once gas limits scale beyond current levels. Widening to `uint32` eliminates this ceiling entirely, ensuring the BAL remains viable without further type migrations as the protocol evolves. Spec Change Refrence: ethereum/execution-specs#2713 EIP Change Refrence: ethereum/EIPs#11535
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As discussed in discord, we should update the BAL index to use
uint64instead ofuint16to be future proof, having a large enough range to support a 300 million gas limit + EIP-2780 to be shipped.