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 0x510419cd6a78264a2cb0d4b54722cb287ff13a60fa42de81fd4cffdb407d2196. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6e1375f-f21e-47af-95a3-c0f2a0a6472d.json and https://artists.proofprofile.net/proofs/artist/b6e1375f-f21e-47af-95a3-c0f2a0a6472d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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