thumb|250px| Argentine composer and conductor Ettore Panizza. Ettore Panizza (born Héctor Panizza; 12 August 187527 November 1967) was an Argentine conductor and composer, one of the leading conducto
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 0x481b2549ce9a47dc68f547db167cf38e98448a57a62c0095964a375f95ba3a82. 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/8eeaaeee-0e69-4b90-9786-b332cb934898.json and https://artists.proofprofile.net/proofs/artist/8eeaaeee-0e69-4b90-9786-b332cb934898.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Verdi: Otello (Martinelli, Rethberg, Panizza)(1938)
Otello & Jago (Incisioni storiche dal 1902 al 1951)
Opera Arias / Songs (Baritone): Tibbett, Lawrence - Bizet, G. / Leoncavallo, R. / Rossini, G. / Speaks, O. / Wolfe, J. (1928-1940)
Verdi: Un ballo in maschera (Recorded 1940) [Live]