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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300e3fc3403e8e8426df0e0d211825e1222ae20c6b64bae3bbd686e67e06776. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5713fa6-2567-4b4f-bf36-94cff4e317ac.json and https://artists.proofprofile.net/proofs/artist/e5713fa6-2567-4b4f-bf36-94cff4e317ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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