Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #54989
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
645ms
Block → Canton commit
645ms
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.
0xf871821b19858bb2c970088252089415c9c4f774f5b965cf17605bf6b1d746f87d02cb88016345785d8a000080831c946ea0025ac7b9c9b2d2359d13dd6517bbc351ae4634487f5c4a5b398ad80840b0647aa06e3ed3d165c7c588e7091af81ed72b3e6e9d9f6edf16cd3eaaf97948cff0f956