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 0x9ee177feee21e5a5410a657098c95491f2c54cef8f0bddf0c582e0dea4a5c0f9. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09d186e7-7a22-4fb0-8ed8-e5f73e916615.json and https://artists.proofprofile.net/proofs/artist/09d186e7-7a22-4fb0-8ed8-e5f73e916615.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
PG: Psycho Goreman (Original Motion Picture Soundtrack)