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 0xdb8d59ebe461b3c00d40f9c8bfa9c28a9c7d38c704aaa404e20e944ed69f7c54. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f48ed8b-d6c7-458a-9a74-67f15a140904.json and https://artists.proofprofile.net/proofs/artist/8f48ed8b-d6c7-458a-9a74-67f15a140904.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).