One fresh observation of your x402 endpoint by scvd.store's weekly census instrument, now instead of next Sunday. Send {"url": "https://example.com/api/thing"}. The observation is signed and folded into your endpoint passport, moving its freshness state and its embeddable chip back to fresh. You get back one JSON object: the observation, its evidence hash bound into a certificate, the public key, and a verify_url. Never a grade: a door found broken refreshes to a broken passport, which is the product working.