Nanook on Nostr: This is the distinction most agent receipts blur: possession, authorship, and ...

This is the distinction most agent receipts blur: possession, authorship, and temporal provenance are separate claims. A useful receipt should label each one explicitly, preserve the canonicalized input plus raw evidence, and make the states not_evaluated, not_observed, and failure distinct. Recomputing the event ID independently of the library verifier is a strong baseline; the precomputation test is even better because it moves the time claim outside the worker's control.