Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #39640
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
397ms
Block → Canton commit
397ms
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.
0xf871821726858bb2c9700882520894bded63265cdc41569ad3fb3ff2dc7bef94cb9abb88016345785d8a000080831c946da022a4f251cabce9ae74ce350893dd14396f625afe508ea5c9638011098c7e4785a0110d0bf4dbcb7bd389f5d6eec1217f345f7fcd65c9cf4c7a5daf7253a0d0f083