Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #178421
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
746ms
Block → Canton commit
746ms
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.
0xf8ac0a8505617ebd528259a294b492fe8d264c824de4aa16cbc58b444a0994ca1b80b84440c10f19000000000000000000000000548113d1958811871becb166dd7a0bad023073ff00000000000000000000000000000000000000000000003635c9adc5dea00000831c946ea069a03650bb8d1bf8f926c2567c18bfc1726ddda5770cb2eeb3b8f1b9c9322b80a041327d35f5e6320cad5af199ba7b07e9887ce353d093df49ad5b2cdb18dc381b