Base Denim mainnet activation window according to the official upgrades page: 11/5 18:00 UTC (11/6 02:00 Shanghai time). It has not been activated yet, so don't write that it is already live.
Block time will switch from approximately 2-second standard blocks to 200 milliseconds, or five blocks per second. Flashblocks will be retired, and subscriptions need to migrate to standard blocks and RPC streams. BaseTime provides millisecond timestamps onchain; if a contract still uses block height as a timer, it may inadvertently run about 10 times faster after activation.
Pre-activation checklist: Have Flashblocks subscriptions been changed? Have block-height timers been reviewed? Have nodes been upgraded to the required version? Verify against onchain data or official posts.
$ETH
Block time will switch from approximately 2-second standard blocks to 200 milliseconds, or five blocks per second. Flashblocks will be retired, and subscriptions need to migrate to standard blocks and RPC streams. BaseTime provides millisecond timestamps onchain; if a contract still uses block height as a timer, it may inadvertently run about 10 times faster after activation.
Pre-activation checklist: Have Flashblocks subscriptions been changed? Have block-height timers been reviewed? Have nodes been upgraded to the required version? Verify against onchain data or official posts.
$ETH