Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #18657
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
442ms
Block → Canton commit
442ms
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.
0xf8ac80858bb2c970088259a2945345a589ea2a5896673ff13987bcda49d3569be780b84440c10f19000000000000000000000000f2a9f5d89d1dc6101b61172cb4882a50505942a500000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0c695642c0ad54112727a6311dbbda77c51bccc0dfad38246eebd6b722b1932cfa05911b58a342d7e0172b2500b83b35341070faf1c249c2fb2fd134f807feccee6