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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc3b9c837d5c4e5944d6d378362563d45af7385a613837d30f03be77c598f9c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16eb8142-d4bf-45c9-bb59-648f7a89de62.json and https://artists.proofprofile.net/proofs/artist/16eb8142-d4bf-45c9-bb59-648f7a89de62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Essential Classics, Vol. 1104: Charlie Figueroa
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