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Verify a certificate

Independent check: we recompute the hash chain — we never just trust the score field.

Enter a certificate ID from any OriginProof playback link, receipt, or SpeedGrader comment.

how to read this VALID = chain recomputed intact + registry signature confirmed · score bands: ≥85 certified · 70–84 likely · 50–69 mixed/review · <50 non-organic · registry miss = self-minted JSON, not issued by OriginProof