JAMA (The Journal of the American Medical Association) is a peer-reviewed medical journal published 48 times a year by the American Medical Association. It publishes original research, reviews, and
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8278d2452c3f1ab90d7e3d0841fea8423fdcf549074f51eab910fe34497598. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e59eec70-f190-4d7d-ac85-f09d463b0bf1.json and https://artists.proofprofile.net/proofs/artist/e59eec70-f190-4d7d-ac85-f09d463b0bf1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).