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 0x41496b86de6da50ccacff56a9fd1e5b012d6ab4c73a08dfe018368d12e3bf7c0. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/039cd552-cb32-4164-bbfa-fc7a7705b2f7.json and https://artists.proofprofile.net/proofs/artist/039cd552-cb32-4164-bbfa-fc7a7705b2f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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