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 0x86b22be493b4e0c340320c86017d0c509f9ee9b9249874300bfaaa3b099d4641. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f31e63a4-15b7-41b0-8ddd-5c8ac1c53654.json and https://artists.proofprofile.net/proofs/artist/f31e63a4-15b7-41b0-8ddd-5c8ac1c53654.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).