PANews reported on January 26th that Optimism has released its quantum-resistant roadmap for Superchain, the core of which is the announcement of a ten-year phase-out of External Ownership Accounts (EOAs) based on ECDSA signatures. Specifically, by January 2036, EOA transactions using ECDSA signatures on the OP mainnet and Superchain will be deprecated, and all such accounts will need to delegate their key management to smart contract accounts that support post-quantum signatures.

This roadmap covers both the user and consensus levels. At the user level, leveraging account abstraction technology and standards such as EIP-7702, EOAs will gradually delegate signing authority to smart accounts capable of verifying post-quantum signatures. At the consensus level, L2 orderers and bulk committers will migrate to post-quantum signatures, while Ethereum itself is urged to develop a timeline for migrating validators from BLS signatures and KZG commitments to post-quantum algorithms. The entire upgrade process will be coordinated through hard forks, providing the ecosystem with ten years for a smooth transition.