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 0x9918f9bdfdc9f9d862168c8720c4b6616a8a591b0ccf794408cbfef698ad4280. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3be722cc-6361-4155-a6ca-8c9adce9e0b5.json and https://artists.proofprofile.net/proofs/artist/3be722cc-6361-4155-a6ca-8c9adce9e0b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).