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 0x7efc24da6e8a75f2f73aa8f9a5e2ea0cb37e675b8363d5b99da7a53d556304de. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3952e71-9811-49c2-80a3-3512ab2021cf.json and https://artists.proofprofile.net/proofs/artist/d3952e71-9811-49c2-80a3-3512ab2021cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).