Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #190308
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
407ms
Block → Canton commit
407ms
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.
0xf8ac12858bb2c970088259a2940db987998cdceb19be8b3dd513f173fb1c32fe8980b84440c10f19000000000000000000000000c76bdbd0339d1412041249c3f12ab90b884a142f00000000000000000000000000000000000000000000003635c9adc5dea00000831c946ea0a4d7e41d70d20486bf3e242c6345af6fbcd2ec13e876a7f99b482fd007f5e783a04c3249713d178b37ac109f296edeb3446a3be4d66daf7224f46703bb54d253a9