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 0x4a50a2970e6b68f64cce792cbc0d00f72a7183977cc3a43804a6bf7e77c167e7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39545ec1-44f3-4895-8e9c-b18c73ac9a5e.json and https://artists.proofprofile.net/proofs/artist/39545ec1-44f3-4895-8e9c-b18c73ac9a5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Gloria De Cuba - Los Grandes Exitos Originales, Vol. 2