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 0x0dfdb1cd744049e3f5be4db9699bcb1d2b1b2d46754b7cea670dec2e0cd8458b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2575c8d-7ff3-44e8-a883-42acb8274b05.json and https://artists.proofprofile.net/proofs/artist/c2575c8d-7ff3-44e8-a883-42acb8274b05.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).