Overview
- Researchers filed a draft EIP proposing to replace the validator deposit contract with a version that accepts variable‑length public keys and metadata and records a credential scheme for each deposit.
- The proposed contract raises size limits to accommodate payloads up to 8,192 bytes, preserves current BLS compatibility at first, and defines three modes including an irreversible BLS retirement state.
- The change responds to recent Google Quantum AI research that reduced estimates of the quantum resources needed to break elliptic‑curve signatures and to protect roughly tens of millions of staked ETH currently secured by BLS.
- The EIP is a draft awaiting editor review and it leaves key details undecided, including exact contract addresses, activation timestamps, which post‑quantum schemes to use, and client implementations required for a coordinated fork.
- Ethereum’s plan is a multi‑year migration that targets a 2029 end state using hash‑based signatures like leanXMSS and will require cross‑team testing, security analysis, and careful handling to avoid disruption to validators and liquid‑staking services.