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 0x49fbd77c8a29d2f585822fbed4a3d1b231e2d577baa01d54e6683ff614629bf1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/deff7ab2-f2f1-4d31-8056-f56012300996.json and https://artists.proofprofile.net/proofs/artist/deff7ab2-f2f1-4d31-8056-f56012300996.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bastard (Original Motion Picture Soundtrack)
Jan Paweł II - Szukałem Was... Muzyka do Filmu
A Prominent Patient (Masaryk) [Original Motion Picture Soundtrack]