Elio Villafranca is a Cuban jazz pianist and composer. He was born in the Cuban province of Pinar del Río, and studied in the faculty of music of the Instituto Superior de Arte in Havana. He worked on
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 0xad42a49df34d3818856a2223ca53cf6bee3511167afb17bb26561369eb662a06. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e2ee439-cb06-49cd-b640-fb644c0548ce.json and https://artists.proofprofile.net/proofs/artist/1e2ee439-cb06-49cd-b640-fb644c0548ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caribbean Tinge: Live from Dizzy's Club Coca-Cola