Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #4915
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.
0xf88b0e843b9aca0e8301190194215ce01d40fa363e743a5a3f1f451d2afe84e82280a455ee1fe1000000000000000000000000c71b75bab4f0a748f607ee23e829d31646449839831c946ea0b5f8a62b607041a8140cf8e64c4caf8ba027b2f6aca7c060f74a95309e92fd06a06d8adbf0bc308d5faa34442b8b47e954d4aec41d66cc0071d8b049117af5ddff