Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #219902
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
638ms
Block → Canton commit
638ms
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.
0xf8ac0d8502b9842d0c8259a294e0a45ef66d2db5e766eba1f70e21a4bf1f901b8780b84440c10f190000000000000000000000006166bc99d30dbc7597e8fd5d7f9b64f789cc525c00000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0f23259edce58555ad03a1e2bded71c0715176ccc0f090156b6b436c108ad4b18a07ce5fba5e27b137b43606c9d886f031226d3aa6f430985f4f6dcfa8f0b24653d