Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #21556
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
630ms
Block → Canton commit
630ms
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.
0x02f871830e4a258204bf8502540be40085028fa6ae008252089427ab051371054dcbb4c0aee315d9507b77c049868080c001a0a420dac44865bd453c3b51f3937db121b23dcb73e2c5c0c75d5f33f71520e9bda011599cd968f28cf5ef3e19ca9c73cbb83ac976af45f0377823c20cb0d0227e1f