What shows that a statement about the product is true: claims joined to the executions recorded for their tests, use cases the tool runs against itself, measurements of speed and of token cost that are recorded rather than typed, and the provenance of every record. A run against this commit is never reported as the same thing as a run whose inputs merely have not changed.
Not in this domain: the verdict on one task, which is completion; and the rules a claim is about, which is governance.