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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7ee2ba3636ef68cbc599ff2ff186f4268ef7ba87a17ddcbba1fe1fd5c5e44. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10e4dad2-24f7-4fc3-9d2c-3fa0f1f0d117.json and https://artists.proofprofile.net/proofs/artist/10e4dad2-24f7-4fc3-9d2c-3fa0f1f0d117.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).