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BNB Chain Activates Fermi Hard Fork, Cutting Block Times to 0.45 Seconds

Tighter fast-finality rules aim to support exchange‑grade DeFi, laying the base for a 2026 push toward near‑instant settlement.

Overview

  • Mainnet switched at roughly 02:30 UTC on January 14 at block 75,140,593, with on‑chain metrics confirming ~0.45‑second blocks at a cadence of 2–3 per second.
  • BEP‑619 reduces the interval from 0.75s to 0.45s and BEP‑590 reinforces fast‑finality voting to keep confirmations predictable under higher throughput.
  • Additional enhancements include non‑consensus access lists (BEP‑592), incremental snapshot support (BEP‑593), and EVM super‑instruction improvements (BEP‑610).
  • Validators were required to run BSC v1.6.4 or later, with nodes regenerating snapshots and re‑indexing logs on first startup, causing temporary performance impacts.
  • The upgrade targets slippage reduction and smoother liquidations as daily active addresses trend near 2021 highs while TVL hovers around $7 billion, and it underpins BNB Chain’s 2026 plan for a next‑generation trading layer.