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 0x118986015974a954f7b2163c29c9f63a66b0558bf69be9dda5164a8b5cbffe80. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b86e035b-950b-4b2a-8aaf-f70970bb953d.json and https://artists.proofprofile.net/proofs/artist/b86e035b-950b-4b2a-8aaf-f70970bb953d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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