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 0x1b72cdcf412c3a2be1351a575b75da6e6b0dc6e60cb7b10721b7779eeb833afe. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7edffa07-f8aa-480f-9a03-9d08d3a8ad51.json and https://artists.proofprofile.net/proofs/artist/7edffa07-f8aa-480f-9a03-9d08d3a8ad51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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