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 0x8f907cf9b115a5e501c43e04d028af12f54dd4f82b3bc481de300fd59db2dc46. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f70fa5c5-098b-49f6-b36d-25a1dd67cb8d.json and https://artists.proofprofile.net/proofs/artist/f70fa5c5-098b-49f6-b36d-25a1dd67cb8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).