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 0x1db4b7a6ac9d8101f6dc5f5bfe3f9999e599a7501e1cfe5701a450c61ed8abd3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ae05913-ac9c-45ac-a9b9-bc089a94cd21.json and https://artists.proofprofile.net/proofs/artist/4ae05913-ac9c-45ac-a9b9-bc089a94cd21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).