Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #54199
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
316ms
Block → Canton commit
316ms
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.
0xf871821a2d858bb2c9700882520894ff24c5cc1c9f8199ee5a12d9fd1feeb8e421a5e188016345785d8a000080831c946ea0ce86bd4d72a17634e46991ee59734fcb5171a141f8317b1169f7034c1260fb62a01b1860ce5dd67f5718964e5714a6f22e4cd8c2382c2d0e7411e3f76edb93282e