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 0xf5bdad2dad9bd58525796c8d5fd0f32adc3c83fec660218e3c13fe3cb4aa8dbd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a7be729-f3d9-4c28-9585-6e0735d37129.json and https://artists.proofprofile.net/proofs/artist/0a7be729-f3d9-4c28-9585-6e0735d37129.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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