Base targets 200ms blocks with Denim mainnet upgrade in November 2026
- —Block time drops from 2 seconds to 200ms, or five blocks per second
- —Daily block output rises from 43,200 to 432,000, a tenfold increase
- —Denim is already live on the Base Sepolia testnet as of October 21
- —The upgrade retires Flashblocks preconfirmations, requiring app migration
Why it matters: Faster blocks cut settlement latency on Base and sharpen competition among L2s for apps, but indexers and RPC providers will need roughly tenfold capacity.
Source: Crypto Briefing