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 0x46aab2bd6d8d29882aaddb37a99d28d88f151bd7231cf3914bb54781afb40c17. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87fae1b1-8c44-447d-b3a7-bf6c9309afee.json and https://artists.proofprofile.net/proofs/artist/87fae1b1-8c44-447d-b3a7-bf6c9309afee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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