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 0xe1827558e425365b7b916079ae0f403963da637aecb521208e0caae8f5a125ad. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c599d017-14b0-421f-8465-49e1490abbe3.json and https://artists.proofprofile.net/proofs/artist/c599d017-14b0-421f-8465-49e1490abbe3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ao Vivo no Estação da Música 2004, Feira de Santana, BA