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 0x9a8f46036fe232ea0e4abad9ae01e6bc0d1987243e64b521ee0a6984ac644f29. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97b1122d-c342-4f06-88a2-52330852721d.json and https://artists.proofprofile.net/proofs/artist/97b1122d-c342-4f06-88a2-52330852721d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cavalleria rusticana, IPM 4: "Ave Maria"
Singing For You (20th Anniversary Edition)
Singing for You (20th Anniversary Edition)