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 0x8b88e346638004425e1018b45a5d120bd4e46a5ade6066463b0b0967b4f2dfbd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b21e7add-1270-4ca4-8b5f-9957d66021de.json and https://artists.proofprofile.net/proofs/artist/b21e7add-1270-4ca4-8b5f-9957d66021de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonate No. 6 in A-Dur, op. 82: I. Allegro Moderato
Sonate No. 6 in E-Dur, op. 82: II. Allegretto
Sonate No. 6 in A-Dur, op. 82: III. Tempo di valzer lentissimo
Sonate No. 6 in A-Dur, op. 82: IV. Vivace
Sonate No. 7 in B-Dur, op. 83: I. Allegro Inquieto
Sonate No. 7 in B-Dur, op. 83: II. Andante caloroso
Sonate No. 7 in B-Dur, op. 83: III. Precipiato
Sonate No. 2 "Sonate-Fantaisie" in Gis-Moll, op. 19: I. Andante
Sonate No. 2 "Sonate-Fantaisie" in Gis-Moll, op. 19: II. Presto
Sonate No. 38, HOB. XVI/23: III. Finale Presto
Sonate No. 60, HOB. XVI/50: III. Allegro Molto
Andante Con Variazioni in F Minor, HOB. XVII6 1/2
Sonate No. 62, HOB. XVI/52: III. Finale Presto
Classic Selection - Bach: Goldberg Variationen
Goldberg Variationen: Variatio 1 a 1 Clav.
Goldberg Variationen: Variatio 2 a 1 Clav
Goldberg Variationen: Variatio 3 a 1 Clav. Canone all´unisono
Goldberg Variationen: Variatio 4 a 1 Clav.
Goldberg Variationen: Variatio 5 a 1 ovvero 2 Clav.
Goldberg Variationen: Variatio 6 a 1 Clav. Canone alla Seconda
Goldberg Variationen: Variatio 7 a 1 ovvero 2 Clav. al tempo di Giga
Goldberg Variationen: Variatio 8 a 1 Clav.
Goldberg Variationen: Variatio 9 a 1 Clav. Canone alla Terza
Goldberg Variationen: Variatio 10 a 1 Clav. Fughetta
Goldberg Variationen: Variatio 11 a 2 Clav.
Goldberg Variationen: Variatio 12 a 1 Clav. Canone alla Quarta
Goldberg Variationen: Variatio 13 a 2 Clav.
Goldberg Variationen: Variatio 14 a 2 Clav.
Goldberg Variationen: Variatio 15 a 1 Clav. Canone alla Quinta
Goldberg Variationen: Variatio 16 a 1 Clav. Ouverture
Goldberg Variationen: Variatio 17 a 2 Clav.
Goldberg Variationen: Variatio 18 a 1 Clav. Canone alla Sesta
Goldberg Variationen: Variatio 19 a 1 Clav.
Goldberg Variationen: Variatio 20 a 2 Clav.
Goldberg Variationen: Variatio 21 a 1 Clav. Canone alla Settima
Goldberg Variationen: Variatio 22 a 1 Clav. Alla breve
Goldberg Variationen: Variatio 23 a 2 Clav.
Goldberg Variationen: Variatio 24 a 1 Clav. Canone all´Ottava
Goldberg Variationen: Variatio 25 a 2 Clav. Adagio
Goldberg Variationen: Variatio 26 a 2 Clav.
Goldberg Variationen: Variatio 27 a 2 Clav. Canone alla Nona
Goldberg Variationen: Variatio 28 a 2 Clav.
Goldberg Variationen: Variatio 29 a 1 ovvero 2 Clav.
Goldberg Variationen: Variatio 30 a 1 Clav. Quodlibet
Classic Selection - Robert Schumann Werke für Violoncello & Klavier
Fantasiestücke op. 73: Zart und mit Ausdruck
Fantasiestücke op. 73: Rasch und mit Feuer
Fünf Stücke im Volkston op. 102: Mit Humor
Fünf Stücke im Volkston op. 102: Langsam
Fünf Stücke im Volkston op. 102: Nicht schnell, mit viel Ton zu spielen
Fünf Stücke im Volkston op. 102: Nicht zu rasch
Fünf Stücke im Volkston op. 102: Stark und markiert
Classic Selection Schubert - Stefan Vladar
Klaviersonate A-Dur, D. 959: Scherzo: Allegro vivace
Klaviersonate A-Dur, D. 959: Rondo: Allegretto
Klaviersonate B-Dur, D.960: Molto moderato
Klaviersonate B-Dur, D.960: Andante sostenuto
Klaviersonate B-Dur, D.960: Scherzo: Allegro vivace con delicatezza
Klaviersonate B-Dur, D.960: Allegro, ma non troppo
Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor": Iii. Rondo: Allegro, ma non troppo
Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": I. Allegro (Excerpt)
Great Composers in Words & Music: Ludwig van Beethoven
Symphonic Etudes, Op. 13: Etudes symphoniques (Symphonic Etudes), Op. 13: Anhang Variation 5
It Is Written in the Stars: Classical Music for Stargazing
Piano Concerto No. 2 in B-Flat Major, Op. 19: III. Rondo. Molto allegro
Piano Concerto No. 4 in G Major, Op. 58: III. Rondo. Vivace
Overture on Hebrew Themes, Op. 34 (Orch. Version)
Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor": Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor"
Piano Concerto No. 3 in C Minor, Op. 37: Ii. Largo
Piano Concerto No. 2 in B-flat Major, Op. 19: Ii. Adagio
Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor": Ii. Adagio un poco moto
Piano Concerto No. 1 in C Major, Op. 15: I. Allegro con brio
Piano Concerto No. 1 in C Major, Op. 15: II. Largo
Piano Concerto No. 1 in C Major, Op. 15: III. Rondo (Allegro scherzando)
Piano Concerto No. 2 in B-Flat Major, Op. 19: I. Allegro con brio
Piano Concerto No. 2 in B-Flat Major, Op. 19: II. Adagio
Piano Concerto No. 2 in B-Flat Major, Op. 19: III. Rondo (Molto allegro)
Piano Concerto No. 3 in C Minor, Op. 37: I. Allegro con brio
Piano Concerto No. 3 in C Minor, Op. 37: II. Largo
Piano Concerto No. 3 in C Minor, Op. 37: III. Rondo (Allegro)