Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #4215
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
638ms
Block → Canton commit
638ms
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.
0x02f878830e4a25820b5185188122883f85188122884782520894516dd4c094c4d7789011a7edd34e82114bee19c0880de0b6b3a764000080c0019f24ab77dc6186169454673d05a6e50cb8114f0f35d7eed3570167e4be2a4ea5a01b262eab66f9335fdfb31387e510b306b30c86ec5bbf820583ecd450ffe7bcd1