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EIP-8163 Reserve `EXTENSION (0xae)` opcode

ReviewCorecreated 2026-02-13requires EIP-141

Reserve an opcode to be used as an extension prefix in non-Ethereum-L1 EVM chains

Authors: Bruce Collie (@Baltoli), Piotr Dobaczewski (@pdobacz)

Depends on (1)

Proposals this one names in its requires field.

What the specification covers

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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