Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #638
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
639ms
Block → Canton commit
639ms
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.
0x02f878830e4a2581bf85011c033c7e85011c033c8682520894f847dc25b86c3ecbb30123c45ee84323cfb76651880de0b6b3a764000080c001a0718132ed7895c99bea45ec95fecb3c8af12ccc4271428cc4ef779ece751ab3d9a004ca6694fe95c14260170b76c65af6a89bb7fe658c32765b7a8c758064e1ef71