Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #138887
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
675ms
Block → Canton commit
675ms
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.
0x02f86f830e4a258218e8843b9aca0084773594008252089427ab051371054dcbb4c0aee315d9507b77c049868080c001a02abb671cf5a8bb6b76509bf41470ae32aa53f985565ee2b910f2f18aad34c7bba05dda9b5aeb7d98506c382f1e6a3bdb6ae3d8c6c2164a4c861bb8eb67d686747a