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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8208408093e96d0f003eba9c1e541737ccd5b7947915d2a4fbc341c74cd97bd6. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f88444d-0a4e-4ae6-8d60-eea65f68c9e0.json and https://artists.proofprofile.net/proofs/artist/3f88444d-0a4e-4ae6-8d60-eea65f68c9e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).