Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #190308
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
407ms
Block → Canton commit
407ms
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.
0xf8ac12858bb2c970088259a29423e5dee888c67549a750290c1ba14a94c855229a80b84440c10f190000000000000000000000008bec43bbeecaa0fb7b24730daad006181d7773f500000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0f35e632f6b5f41693264ce6a72e50de43e8b9a978b8017e54df5ac33706ce74ca04156dbf8cbcee9125510e087647138233f7af7d3348aea993da1fa561fc403dc