Overview
- Vitalik Buterin publicly backed the proposal, saying it can provide a hard guarantee after a single slot under the stated conditions.
- The rule replaces k-deep block counting with validator attestations, reducing deposit recognition to roughly 12–13 seconds.
- Client teams are implementing FCR without a hard fork, letting nodes and services enable it via existing interfaces such as the “safe” block tag.
- Exchanges, bridge operators, and Layer 2s like Arbitrum and Base anticipate faster deposits and less locked capital, with reported 80–98% time reductions.
- FCR is designed to wait longer or fall back to normal finality if network conditions degrade, though some community members question the underlying assumptions.