1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51c270da5612251c0e56b69110b66f6d17a4e0c8ff5894d44ebf883188ef23f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/270170ac-e181-48fb-8d68-92202f7495dd.json and https://artists.proofprofile.net/proofs/artist/270170ac-e181-48fb-8d68-92202f7495dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hadra Trance Festival, Vol. 10 (Anniversary Edition)