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 0xb517de0221ac3367bfc26b50b9b4c05b2e8ea374f7059f4e2dfd857e9890e6c5. 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/279653c1-aea9-4df9-9046-c8c21f7a7dcc.json and https://artists.proofprofile.net/proofs/artist/279653c1-aea9-4df9-9046-c8c21f7a7dcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
It's Beginning to Look a Lot Like Christmas
The Greatest Northern Christmas Carols (Remastered)
Muumilauluja: Moomin Voices Expanded Edition
Rouva Vilijonkan laulu (2005 Version) [Live]