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 0x3e813097d4aaae5e398ec651cc6cde5365ce6c21b72ea370128e797ee150489b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89757984-9750-481e-b7be-6101a7ead4d7.json and https://artists.proofprofile.net/proofs/artist/89757984-9750-481e-b7be-6101a7ead4d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sweet'n Loure (After J. S. Bach's BWV 1006a)
Let's Gavotte! (After J. S. Bach's BWV 1006a)
Adagio C-Sharp Minor (After J. S. Bach's BWV 1042)
All the Things You Are (From "Broadway Rhythm")
Adagio C Major (After J. S. Bach's BWV 1005)