Originally published at prometheno.org . Now let's think together. In The identity gap I said identity-proofing rides on existing institutions, not on crypto. This post is the same shape, different regime: clinical truth rides on existing medical practice. What HAVEN delivers is what the protocol layer can deliver — quality grading at ingest. The clinical-truth verification happens where it should: in medicine. Two questions a record makes A clinical record claims two things at once. First — this byte sequence is the one that was written. Crypto answers that. Hash matches, signature verifies, chain intact. Done. Second — the byte sequence describes the patient's body. Glucose was The diagnosis was correct. The procedure happened. Different question. Not because crypto fails at it; because crypto isn't pointed at it. Three concrete ways the second question goes wrong: Wrong patient. Two MRNs swapped at intake. The lab value belongs to someone else's blood. Signature, timestamp, chain — clean. Wrong recording.…