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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a3bff931f94ababa5781a0179ee82f3de27fec5c499bdde0a8a90c1ae0ddde. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4919085-1c19-4299-af4f-892365bf3b09.json and https://artists.proofprofile.net/proofs/artist/a4919085-1c19-4299-af4f-892365bf3b09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
8 Valses Poeticos: II. Vals 1 - Melodico
8 Valses Poeticos: III. Vals 3 - Tempo de Vals lento
8 Valses Poeticos: IV. Vals 4 - Allegro humoristico
Flute Sonata in E Minor, BWV 1034: I. Adagio ma non tanto
Flute Sonata in E Minor, BWV 1034: II. Allegro
Flute Sonata in E Minor, BWV 1034: III. Andante
Flute Sonata in E Minor, BWV 1034: IV. Allegro
Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
Cello Suite No. 1 in G Major, BWV 1007: II. Allemande
Cello Suite No. 1 in G Major, BWV 1007: III. Courante
Cello Suite No. 1 in G Major, BWV 1007: IV. Sarabande
Cello Suite No. 1 in G Major, BWV 1007: V. Menuet I - Menuet II
Cello Suite No. 1 in G Major, BWV 1007: VI. Gigue
Second livre de pièces de clavecin: V. Les Barricades Mistérieuses
Arabesque en forme de caprice sur le tombeau de Tarrega
Scottish Lute Pieces: III. Courante and Double
Mishima String Quartet No. 3: I. 1957 Award Montage (Arr. for Guitar Quartet)
Mishima String Quartet No. 3: II. November 25 - Ichigaya (Arr. for Guitar Quartet)
Mishima String Quartet No. 3: III. Grandmother and Kimitake (Arr. for Guitar Quartet)
Mishima String Quartet No. 3: IV. 1962 Body Building (Arr. for Guitar Quartet)
Mishima String Quartet No. 3: V. Blood Oath (Arr. for Guitar Quartet)
Mishima String Quartet No. 3: VI. Mishima-Closing (Arr. for Guitar Quartet)
25 Progressive Studies, Op. 60: No. 22 in E Minor
24 Petites Pièces Progressives, Op 44: No. 2
24 Petites Pièces Progressives, Op 44: No. 3
École De Guitare, Op. 241: No. 8 in E Minor
Minuet in G (From Anna Magdalena Bach Notebook)
24 Exercices Très Faciles, Op. 35: No 22
Fugitivos Del Tiempo from Album De La Inocencia
La Paz De Tu Sonrisa from Album De La Inocencia by Eduardo Martin
Le papillon, Op. 50, No. 13: Allegro in A Minor
École de guitare, Op. 241, No. 18: Andante
18 Petits morceaux, Op. 211, No. 2: Andante Grazioso
Méthode complète pour la guitare, Op. 59, No. 20: Andante in A Minor
Herz und Mund und Tat und Leben, BWV 147: X. Jesu Joy of Man's Desiring (Arr. for Guitar)
Collection Piezas De Guitarra, Series 1, No. 6: Bolero
12 Canciones Del Calendario: Canción De Diciembre
Schule Fur Die Guitare, No. 7: Cantabile
Coleccion 12a De Ejercicios: Ejercicio No. 9
18 Progressive Studies, Op. 51, No. 1: Maestoso,
Anonymous Dances, 'Españoleta' and 'Wilson's Wilde'.
'Con El Fuego De Tus Ansias' from Álbum De La Inocencia
Allegretto Grazioso Opus 1, Part Four, No. 2
Méthode complète pour la guitare, Op. 59: Waltz
Violin Sonata No. 2 in A Minor, BWV 1003: III. Andante (Transc. for Guitar)
Johann Sebastian Bach Classical Guitar Edition