Base Mainnet Denim Upgrade

Scheduled for Nov 5, 18:00 - 20:00 UTC

Scheduled

Base Mainnet will undergo the scheduled Denim hardfork on Thursday, November 5 at 18:00 UTC. Changes include:
• Block time reduced from 2s to 200ms
• Flashblocks removed
• B20 token standard improvements
• Additional optional fields on blocks, headers, transactions, logs, and receipts

For more details, see the Denim upgrade overview (https://docs.base.org/upgrades/denim/overview).

Posted Nov 03, 2026 - 15:29 UTC

This scheduled maintenance affects: Base.