Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #2990
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
399ms
Block → Canton commit
399ms
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.
0x02f874830e4a25028518812288468518812288468301715694a594ddb1986072e4a14f39062b6f3e57e8afbff38084183ff085c080a0ab8339dabcbbc2d67cc863e7ff1d0fd65a5385fc193b52432e9261af39b86d7ea0483d8bc4ebe8cd2ec916097941bb6bae8835a3a21de39ef54564d08b0d9c8922