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AI Nutrition Label
Verify an AI Nutrition Label
Paste a Placard (placardId and canonical bytes, plus the signature if you have it). No Trustvice account required. A failed check is never shown as a pass. A matching content address without a verified signature is not signed authorship.
What this proves
When the signature verifies, the canonical bytes were signed by the published Placard key named on the result, and they hash to the stated placardId.
When only the content address matches, the bytes have not been altered relative to that id — authorship is still unverified.
Anyone can repeat this check with no Trustvice account.
What this does not prove
Signed authorship when signatureVerified is false. A matching content address is not a green pass.
That a notice was delivered before the first interaction — delivery is a separate ledger, not this closer.
Anything about llms.txt (Emissary), Cachet, or Paradigm — those are separate public verbs.
Trustvice 360