Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #8515
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
639ms
Block → Canton commit
639ms
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.
0x02f879830e4a25821811851d67c309e6851d67c309ee82520894cd6c2b42305dc4d7de157eae571863bdbd965368880de0b6b3a764000080c001a00b4ce39ba3ec6ea6366ab0c1aa490f997662a37041a653e796cc256524c2c08aa031bf1634bb2bff3c268b24a60f3a76cdfcaa7a2e7faf80363d863d4136765609