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 0xedba83b99a64ecb73fa41520e325c31b3da0759cf435aedd23d1aef62a0278c5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfd98880-3ca3-475a-aff4-9ff73298e3a0.json and https://artists.proofprofile.net/proofs/artist/cfd98880-3ca3-475a-aff4-9ff73298e3a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven Sonate No 17 Tempest 3rd Movement
Beethoven Sonata No 14 Op 27 No 2 Mondsche in Moonlight
Beethoven Sonata No 23 Op 57 Appassionata
Beethoven Sonata No 8 Pathetique 3 Rondo Allegro
Beethoven Eroica Symphony No 3 in E Flat Major 1st Movement
Beethoven Moonlight Sonata Third Movement
Beethoven Violin Sonata No 9 Op 4 Kreutzer Your Lie in April
Beethovens Sonate No 14 Moonlight 3rd Movement
Traditional Hey Diddle Diddle the Cat the Fiddle