Full lifecycle view
Gateway_FinalizeBlock
Block timestamp → commit, incl. the gateway-build-block call for block #306
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
669ms
Block → Canton commit
669ms
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.
0x02f875830e4a2536847064b8f5847064b8fd8252089461b7b7b8408790def93b2c179622fc7394ee275e880de0b6b3a764000080c080a02a485a50752096e2e9e2b05b13f7de55e6c4a2b0b03feb5389eb298c4c667302a05fb09e0e1da8852fb3d0e7f52f96eee882177984c760d5ab2f4d93b36f0cba87