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 0xa4a9b27c9ff91ac5b64109b6d6d87b567411002d27c09fcaba70dccdf62ebcc1. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e6e6001-8529-4b51-9c0b-1b148f4132fb.json and https://artists.proofprofile.net/proofs/artist/3e6e6001-8529-4b51-9c0b-1b148f4132fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).