Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #189777
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
647ms
Block → Canton commit
647ms
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.
0xf8ac12851de4c01a76825986945345a589ea2a5896673ff13987bcda49d3569be780b84440c10f19000000000000000000000000090aafb7988f62527aa93923aa01718f21e512c100000000000000000000000000000000000000000000003635c9adc5dea00000831c946ea051296de8303cc83ac4723210e738f0a70ccc863eaed0df895ebf4d7313ebffb2a0615c4e9481f32d8b28daeb946172ad2fc95d0acc03761dc730536627a6013c23