Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #191221
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
737ms
Block → Canton commit
737ms
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.
0xf8ac0d851b345f7abb8259a29423e5dee888c67549a750290c1ba14a94c855229a80b84440c10f190000000000000000000000002f4d45dc12451d7d15212071c8210a24e290fce400000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0395acefc78520e9fc2b72b3bd2e15a915a400190bc1ac49265bfd5a365e46b9ba01509b0946ac5adb326b31cc579bd70c4cc56cdd95a977839f35c456900669915