Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #21509
Measured from on-chain timestamps only: the EVM block timestamp, which the producer chose when it planned the block (whole seconds), and the record time (commit) of the Gateway_FinalizeBlock transaction; a commit that reads slightly before the block timestamp (rounding) shows as 0. The gateway-build-block external call runs inside that transaction and is not timed on its own; the import into the execution layers follows the commit and its time is not observable here, so those steps are markers without a duration.
Total
388ms
Block → Canton commit
388ms
block timestamp → record time (±1s)
Measured from on-chain timestamps: the EVM block timestamp, chosen when the producer planned the block, and the record time (commit) of the Gateway_FinalizeBlock transaction. The block timestamp is whole seconds and follows Canton's ledger time, so the span carries up to ±1s of rounding; a commit that reads slightly before the block timestamp shows as 0.
0x02f875830e4a2582020d843b9aca00843b9aca15827e2c942c160bb6f1d0ca642fd35321190c9aefdfb5ccc1865af3107a400080c080a02314165824637e33182512e1d21fb090c101dd3947b5b41a4c646dc61ad36509a05b711b0b4bdc793f788fe03d0cbcdd8ae5cee4a903c3919714d1ff148e6ef97d