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 0x47ca6bef10b4799a1384ba41b8fd058f8d7464ba9f45a0bf3cce1e6620ff7011. 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/24b1a29a-2a71-476d-8ddf-73e61adb2b88.json and https://artists.proofprofile.net/proofs/artist/24b1a29a-2a71-476d-8ddf-73e61adb2b88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).