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 0xd304b593d8331ab3a54a70dc0a61ff819439f83615f18da90b3cd2d62dc49f78. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdb8d8bb-8ba9-460b-ad5e-56654d37e3a8.json and https://artists.proofprofile.net/proofs/artist/fdb8d8bb-8ba9-460b-ad5e-56654d37e3a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).