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Base Activates Fourth Mainnet Upgrade Denim, Replacing Flashblocks with 200ms Blocks

1 reports1 sources11/5/2026 updated

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AI overview

Base has activated the Denim upgrade on its mainnet. The upgrade replaces Flashblocks with 200ms block times and introduces five canonical blocks per second. It is now live on the Base network. The Block reported the activation at 3:00 Beijing time on November 6, 2026. The story is headlined 'Base deploys Denim upgrade on mainnet, replacing Flashblocks with 200ms block times.' According to the report, this is Base's fourth mainnet network upgrade. The upgrade is identified as Denim in both the summary and the report title.

Written with AI from the reporting · updated 11/5/2026

Latest developmentNov 6, 03:00
Base Deploys Denim Upgrade on Mainnet, Replacing Flashblocks with 200ms Block Times
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  1. 1Unclassified fact stationNov 6, 04:19single sourcereport-time only

    Base 主网部署 Denim 升级，区块时间缩短至 200ms

    Read original source ↗ The BlockReplay this moment in the explorer
    Evidence & revisions · 1 source records
    Subject：
    ethereum
    Action：
    部署 Denim 网络升级
    Object：
    替换 Flashblocks，引入每秒 5 个规范区块（200ms 间隔）
    Occurred (fact side)：
    not recorded
    The Block ↗Report pageOriginal / first version
    Published (valid side)：
    Nov 6, 03:00
    First seen (known side)：
    Nov 6, 04:19
    Fact stationSingle source · one-sided claimReport-time only

    Copy may have been revised later; time replay is bounded. Layer labels group reading only, not causation between layers.

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Nov 6
  1. The BlockRelated fact: single sourceFact occurrence time unverified
    Base Deploys Denim Upgrade on Mainnet, Replacing Flashblocks with 200ms Block Times

    Report first recorded Nov 6, 04:19

    Base network activated its fourth network upgrade called Denim on mainnet, replacing Flashblocks with 200ms block times and introducing five canonical blocks per second. The upgrade was reported by The Block on November 6, 2026, Beijing time.

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