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Nov 5, 2026

Base blockchain cuts block time to 0.2 seconds after Denim upgrade

Coinbase's Base network switched from two-second to 200-millisecond block times following its Denim upgrade, a tenfold increase in block production speed.

Nov 5, 2026·4 sources

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Top claims

▪Denim reduces Base's canonical block generation time tenfold from two seconds to 200 milliseconds, producing five canonical blocks per second
▪Flashblocks had operated on Base since July 2025 to stream partial transaction preconfirmations every 200 milliseconds between two-second blocks
▪Denim represents Base's fourth major upgrade on mainnet, following the Azul, Beryl, and Cobalt upgrades

Topics

Ethereum Cryptocurrencies Layer 2s Blockchain scalability solutions Ethereum upgrades Blockchain nodes & clients Ethereum Layer 2s & scaling

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