Ethereum Fast Confirmation Rule Aims to Reduce Deposit Times to 13 Seconds
Ethereum Foundation researcher Julian Ma has proposed the Fast Confirmation Rule (FCR), aiming to reduce deposit times from Ethereum mainnet to Layer 2 networks and centralized exchanges. Under FCR, a block is treated as confirmed once sufficient validator attestations have accumulated - a process that takes roughly 13 seconds under normal network conditions.
The proposal targets one of the most persistent friction points in the Ethereum ecosystem: the delay incurred when moving assets from the base layer to L2s or exchanges. Current platforms rely on 'k-deep' confirmation rules, which offer no formal security guarantees. FCR replaces this heuristic with an attestation-based model that counts validator votes rather than blocks.
Vitalik Buterin endorsed the proposal on X, describing it as providing 'a hard guarantee that Ethereum will not revert after one slot (12 seconds)'. Consensus layer client teams are already working on implementations, which require no new API endpoints and no network-wide coordination.