Vicente Navarro (born 1937 in Gironella, Spain) is a Spanish sociologist and political scientist. He has been a Professor of Health and Public Policy at Johns Hopkins University, US, for over 30 years
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x04ea7437fbffeb267b157357cf24448822a2660aff6d84fb93d463315ac1be31. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d11d872-fa69-47ee-96c4-cecc1c209f82.json and https://artists.proofprofile.net/proofs/artist/8d11d872-fa69-47ee-96c4-cecc1c209f82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).