Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #15977
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
639ms
Block → Canton commit
639ms
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.
0xf8ac808518e94ac0b88259839423e5dee888c67549a750290c1ba14a94c855229a80b84440c10f19000000000000000000000000d0301ea031217b540b11945a10ae0099af49a28c00000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0d75b80ae96adb56daa757281e6517a09cf7b6823196eea691d5a3a2c56338354a06c55d5084361adc0ae83fb8ca15fd12de2b57dd1e70b197caca6bc0755989e3d