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 0x11ce21503404c58f70191a0a822e879de9f74d460e9b886778dbab145f8bae38. 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/a4ea86ff-e998-426b-8eb9-e1303f84b216.json and https://artists.proofprofile.net/proofs/artist/a4ea86ff-e998-426b-8eb9-e1303f84b216.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Dance Orchestras Nº 62 - EPs Collectors "Que Bella Combinazione" Accordion
Que Bella Combinazione (La Panse) (Baión)
Les enfants du Pirée / Parce qu'un air d'accordéon (Mono Version)
Il en faudrait si peu (Collection "Les archives de l'accordéon")
Tessa: Chanson de Tessa, Op. 44a - Transcribed for Solo Accordion
100 grandes chansons à l'accordéon par les maîtres du piano à bretelles
Accordéon, vol. 3 : Musette virtuoses Paris 1944-1954