Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #8451
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.
0x02f879830e4a258217da851d67c309e6851d67c309ee82520894e8c87e01409790cbf95fb5d2683c31c45907c5c6880de0b6b3a764000080c001a05f8c0162d0ef7a07407dbcec20ee2309d319c0befc71b2995326e2a2577636e6a00fda1c204828f8e78d6e53cedf48daadfabffab4092dd47a7c351caee8405287