thumb|American sculptor Bessie Potter Vonnoh in her studio thumb|upright|Traditional hand block print artisan in India thumb|An artist blacksmith and a striker working as one thumb|right|A wood carve
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x7a4638382a6105d66bfc2f5b56bd9b6515f6b3e2f739e7edbf6b406b90c7bf3c. Chain 2 (Bitcoin): anchored in block 954556 (2026-06-20T12:14:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae72c739-e8cb-4c8d-9fc7-a5ad0767123a.json and https://artists.proofprofile.net/proofs/artist/ae72c739-e8cb-4c8d-9fc7-a5ad0767123a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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