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 0xa961076882e4449e069e5d0ad5f9ef340e175eb72e1643de8560e3b651f4da81. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20ecdf0f-7ff2-4449-9bbf-e3380d28da15.json and https://artists.proofprofile.net/proofs/artist/20ecdf0f-7ff2-4449-9bbf-e3380d28da15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tango Nostalgias (Música de Juan de Dios Filiberto)
The Tango Icons - Juan de Dios Filiberto
The 12 Days of Christmas with Juan De Dios Filiberto
Music around the World by Juan De Dios Filiberto
Vintage Argentine Tangos (1928 - 1954), Vol. 1
Tango - Original Motion Picture Soundtrack
Filiberto / Arr Calandrelli : Caminito [Little path]
Los 50 Grandes Éxitos del Tango: Instrumentales