BNB Chain Sets 'Fermi' hard fork (backward-incompatible protocol upgrade) on BNB Smart Chain mainnet (primary live blockchain network) for Jan 14, 2026

BNB Chain Sets 'Fermi' hard fork (backward-incompatible protocol upgrade) on BNB Smart Chain mainnet (primary live blockchain network) for Jan 14, 2026

BNB Chain completed the 'Fourier' hard fork on opBNB mainnet, halving block intervals to enhance throughput, while 'Fermi' on BNB Smart Chain is scheduled for Jan 14, 2026 for similar efficiency gains.

BNB

Fact Check
The assessment of the statement as 'likely_true' with high confidence is based on the overwhelming and consistent evidence from all provided sources. There is a strong consensus across a variety of high-authority primary and secondary sources, with no conflicting information present.The most definitive evidence comes from primary sources with very high authority: the official BNB Chain blog and the official BNB Chain Developers X (Twitter) account. Both directly announce and confirm the 'Fermi' hard fork is scheduled for the BNB Smart Chain mainnet on January 14, 2026.This core information is consistently corroborated by multiple independent, credible secondary sources. Major cryptocurrency exchanges like OKX and Bitget have publicly announced their support for the upgrade, which lends significant weight to the claim as they have operational and financial reasons to report this information accurately. Furthermore, financial news outlets and crypto-specific event calendars also report the same details—the 'Fermi' hard fork on the BNB Smart Chain on January 14, 2026—demonstrating that this information is widely accepted and disseminated within the industry. The complete absence of any contradictory evidence across all nine sources solidifies the conclusion that the statement is very likely true.
Summary

BNB Chain announced that opBNB successfully executed the 'Fourier' mainnet hard fork on January 7, 2026, reducing block intervals from 500 milliseconds to 250 milliseconds to improve transaction throughput and confirmation speed. Separately, the 'Fermi' hard fork on the BNB Smart Chain mainnet is scheduled for January 14, 2026 at 10:30 UTC+8, supporting node versions v1.6.4 and v1.6.5 and reducing block intervals from 750 milliseconds to 450 milliseconds to boost throughput and transaction efficiency.

Terms & Concepts
  • Hard fork: A backward-incompatible protocol upgrade that requires nodes to update to remain on the new chain.
  • Mainnet: The primary live blockchain network where real transactions occur with actual economic value.
  • Block interval: The target time between blocks; shorter intervals can increase transaction throughput.