
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 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.