Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #12254
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
999ms
Block → Canton commit
999ms
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.
0x02f879830e4a2582224d85746a52880085746a5288088252089465ba3e32b547a9994a19a342cf4e55faa34be1dd880de0b6b3a764000080c080a001dea2118edfd757cf780511bc0b5f9491bf68782cdc65dc5369dd5ef985f889a012ef2f37e17495f2f6fbe4fbb2468e1d6bbd7f407e525aba2b6a31b6de3225b0