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 0x2bcbcf0162f5f78232adc6fd23cf3f6ad2252af0d79d1599849e94823c25a90d. 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/541dd7be-4e5c-4e87-8fcb-85803967ce93.json and https://artists.proofprofile.net/proofs/artist/541dd7be-4e5c-4e87-8fcb-85803967ce93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dictionary of Medieval & Renaissance Instruments
O dolce vita mia (Renaissance Lute & Voice)