Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #154990
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
975ms
Block → Canton commit
975ms
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.
0xf88b4b8459682f00830178c1945687ac70ab8fbec345368982a92089a5dc53f21d80a46a627842000000000000000000000000644552a55d3caa17617fe6ac675b1fa163ecf080831c946ea0f8952ea9051729f389a96ff03150ed8281e7a940edf530d01da738c7ed460974a01f8dd7327cbdf3960b28ac9d4e7473d9f3101914c9dc845d0e9d9fbdf283ee00