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 0x4e23d53e3e478a3cf1019ac8981a802cb4ef9fae6ac57e2f35274ebebcf9419d. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23a5533a-7ebc-4cfa-8e9c-61b74ec82347.json and https://artists.proofprofile.net/proofs/artist/23a5533a-7ebc-4cfa-8e9c-61b74ec82347.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).