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 0xad80331d93751d62848d9e92cdb05409bbb321b8dd81bd6a2b7b8a7f3504ecdf. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be36d7a3-1008-4ea8-a71e-57e135e0ab36.json and https://artists.proofprofile.net/proofs/artist/be36d7a3-1008-4ea8-a71e-57e135e0ab36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Michelangelo 70 (Arr. for Violin & Piano)
Las 4 Estaciones Porteñas: No. 2, Otoño Porteño (Arr. for Violin & Piano)
Las 4 Estaciones Porteñas: No. 4, Invierno Porteño (Arr. for Violin & Piano)
Histoire du Tango: III. Nightclub 1960 (Arr. for Violin & Piano)
Las 4 Estaciones Porteñas: No. 3, Primavera Porteña (Arr. for Violin & Piano)
La Muerte del Ángel (Arr. for Violin & Piano)
Las 4 Estaciones Porteñas: No. 1, Verano Porteño (Arr. for Violin & Piano)
Jalousie (Tango Tzigane) [Arr. for Violin & Piano]
Años de soledad (Arr. for Violin & Piano)
Milonga del angel (Arr. for Violin & Piano)
Tango Etude No. 3 (Arr. O. Brunetti for Violin & Piano)
Tanti anni prima (Arr. for Violin & Piano)
Don Agustin Bardi (Arr. for Violin & Piano)
Lo que vendrá (Arr. for Violin & Piano by Pablo Murgier)
Zita (Arr. for Violin & Piano by Pablo Murgier)
Libertango (Arr. for Violin, Double Bass & Piano by Urban Tango Trio)