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 0xa360d824dcedadab0f27f2beba0188f8084ce65ded8f85bd8ac3e18172b24b12. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14d23480-19cd-4c72-b248-82242f6e0dd5.json and https://artists.proofprofile.net/proofs/artist/14d23480-19cd-4c72-b248-82242f6e0dd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pictures at an Exhibition, Tuileries (Mussorgsky)
Lieder Ohne Worte, Book 1 n. 1 (Mendelsshon)
Pictures at an Exhibition, Promenade (Mussorgsky)
Pictures at an Exhibition, Ballet of the Unhatched Chicks (Mussorgsky)
Pictures at an Exhibition, The Market Place (Mussorgsky)
Keyboard Suite n.7, Passacaille (Handel)
Lieder Ohne Worte, Book 5 n.6 (Mendelsshon)
Lieder Ohne Worte, Book 8 n.4 (Mendelsshon)
Lieder Ohne Worte, Book 2 n.12 (Mendelsshon)
Pictures at an Exhibition, Samuel Goldenberg (Mussorgsky)
Prelude 1, BWV 846, Well Tempered Clavier