Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #4149
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
370ms
Block → Canton commit
370ms
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.
0x02f879830e4a25820b2085188122883f85188122884782520894ded7e04911a864171b6c78de61e9d35b6fc13898880de0b6b3a764000080c080a0030040e7241367ebb389e1c0fdacc153758b77bbeb492f08ff3ef61391e4365ca00227d9df50dbec6647031149ffe75b08cc977f8d69fb9642c232e4a9d4e26c6c