Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #191989
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
458ms
Block → Canton commit
458ms
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.
0xf8ac18855942fd81c68259a2940db987998cdceb19be8b3dd513f173fb1c32fe8980b84440c10f19000000000000000000000000df2b72f16dfbd3e54d604521c138cf2724f5ba8d00000000000000000000000000000000000000000000003635c9adc5dea00000831c946da0234f800cf5cc125c94f17eb7bebdc63aae157fcb05e8643fef649d02e480b24ea05055f22fb4a7deb2168a15f3b916d790a09923d9f884f1e76b085be15dd6bc8b