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 0x5027f8b51167f71fff1c366099e44edc5dc15a1a0ae2fa01615741eb38ce8c92. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b02f259-e31e-47b6-8b44-1675dfcd420b.json and https://artists.proofprofile.net/proofs/artist/8b02f259-e31e-47b6-8b44-1675dfcd420b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Noi eravamo (Original Motion Picture Soundtrack)
The Age of Terezìn (From "Les enfants de Terezìn et le monstre à moustache")
The Age of Terezìn - From "Les enfants de Terezìn et le monstre à moustache"
Petr Ginz - From "Les enfants de Terezìn et le monstre à moustache"
Berçeuse de Hanza - From "Les enfants de Terezìn et le monstre à moustache"
Terezìn - From "Les enfants de Terezìn et le monstre à moustache"
Ela - From "Les enfants de Terezìn et le monstre à moustache"
Sous la peau (Original Motion Picture Soundtrack)