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 0x504f48f641c5c2122e9c981f31fc0a8c9634f5ef1631cf2fd0f4c5adc91d9711. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfa0bb07-64e2-44a6-adad-e9028c302f0f.json and https://artists.proofprofile.net/proofs/artist/cfa0bb07-64e2-44a6-adad-e9028c302f0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Balla Taranta (Il ritmo tarantato del Salento)