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 0xa9680a7e992e599029b1878f0b91b9996a9df28d9132d44acccc16d28a4c0a1b. 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/b2845e6f-4ad3-4063-b011-ad5c131667c3.json and https://artists.proofprofile.net/proofs/artist/b2845e6f-4ad3-4063-b011-ad5c131667c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
French Suite No.1 in D Minor, BWV 812 - 1. Allemande
Children's Corner, L.113, No.1, Doctor Gradus ad Parnassum
Klavierstücke, Op.19 - No.6 - Sehr langsam
Chorale Prelude, Ich ruf zu dir, Herr Jesu Christ, BWV 639
Piano Sonata F Major, KV 332 - 2nd. Movement
Raffaele Grimaldi: Dismorphic Episode - Live
Bogacz, Werdenberg, Gervais & Mayer-Spohn: Trabant 2014
Andante Piano presents: Quietude (Volume One)