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 0x07d1f805cd026182e246722a5e1ba2fd0c91eeb636755d7ea052ec65556cc414. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbcb56db-02e4-4ab9-a391-d77f16ccb716.json and https://artists.proofprofile.net/proofs/artist/cbcb56db-02e4-4ab9-a391-d77f16ccb716.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
From the Depths. Beethoven, Tchaikovksy and Dvorak in Time
Nutcracker Suite, Op. 17a (Arr. Solo Piano by Giorni): Dance of the Reed Flutes (Danse Des Mirlitons) - Duo-Art 6132
Sea Pieces, Op. 55: No. 6, from the Depths
Piano Sonata, Op. 27 No. 2, Moonlight: I. Adagio Sostenuto - Welte-Mignon 1246
Ruins of Athens. Op. 113.: Turkish March or March (Arr. Solo Piano by Novaes) - Welte-Mignon 2881
String Quartet, Op. 18, No. 5 (Arr. Solo Piano by Bauer): III. Andante and Variations in A Major - Duo-Art 7106
Piano Sonata, Op. 57 'Appassionata': ‎I. Allegro Assai - Welte-Mignon 239
Contredanses, WoO 14: Contredanse (German Dance) No. 3, in C Major [Arr. By Isidor Seiss] - Duo-Art 6680
Adelaide, Op. 46. (Arr. Solo Piano by Liszt) - Duo-Art 7380
Egmont, Op. 84: Overture (Arr. Solo Piano by Kohlberg) - Welte-Mignon 1801
8 Variations on Sussmayr's Trio "Tandeln Und Scherzen" in F Major, WoO 76 - Duo-Art 6957
Fidelio, Op. 72b: Leonore Overture No. 3 (Arr. Solo Piano by Lamond) - Duo-Art 7423
Piano Sonata No. 21, Op. 53 "Waldstein": I. Allegro Con Brio - Welte-Mignon 372
Piano Sonata No. 21, Op. 53 "Waldstein": II. Introduzione. Adagio Molto (-Attacca-)
Humoresque, Op. 10, No. 2 in G Major (Based on a French Popular Song) - Duo-Art D661
Nutcracker Suite (Pt. 1) - Welte-Mignon 2995
Nutcracker Suite (Pt. 2) - Welte-Mignon 2996
Humoresques, Op. 101: No. 7, Poco Lento E Grazioso (G♭ Major) - Welte-Mignon 1324
Sonatina, Op. 100 (Arr. By Kreisler): Indian Lament (Largetto from Sonatina) - Da_68008
Humoresque, Op. 101, No. 7 - Duo-Art S-30086
Jesus Bleibet Meine Freude. Bach, Brahms, Debussy & Contemporaries.
Jesus Bleibet Meine Freude, BWV 147 (Arr. Solo Piano by Bauer) - Upon Piano Roll Duo-Art 7371, Issued 1913
La Fleurie, Ou La Tendre Nannette (Arr. Solo Piano by Jeanne-Marie Darrédarré) - Duo-Art 075 Br
Prelude in E Minor, BWV 555 (Arr. By Siloti) - Duo-Art_66329
Violin Sonata No. 2: Bourree in B Minor (Transcription by Saint-Saens) - Duo-Art 67719
Well Tempered Clavier, Book I: Prelude No. 12 in F Minor, BWV 857 - Welte-Mignon 2965
Well Tempered Clavier, Book I: Fugue No. 12, BWV 857 - Welte-Mignon 2965
Well Tempered Clavier, Book I: Prelude No. 5 in D Major, BWV 850 - Welte-Mignon 1836
Well Tempered Clavier, Book I: Fugue No. 5 in D Major, BWV 850 - Welte-Mignon 1836
Two Part Inventions: No. 1, BWV 772 - Duo-Art 6392
Two Part Inventions: No. 6, BWV 777 - Duo-Art 6392
Two Part Inventions: No. 8, BWV 779 - Duo-Art 6392
Partita No. 1, BWV 825: No. 7, Gigue in B-Flat Major - Duo-Art 0216 Br
French Suite No. 6: Part 1: Allemande, Courante - Duo-Art 7080
Gavotte and Variations (Arr. By Leschetizky) - Duo-Art 6217
Capriccio, Op. 76, No. 2 in B Minor - Duo-Art 6596
Capriccio, Op. 76, No. 1 in F-Sharp Minor - Triphonola T-51531
Hungarian Dance No. 2, in D Minor - Welte-Mignon 1096
Waltzes, Op. 39: No. 6 - Welte-Mignon 589
Waltzes, Op. 39: No. 11 - Welte-Mignon 589
Arabesque No. 2 in G Major - Duo-Art 5808
Suite Bergamasque: No. 3, Clair De Lune - Duo-Art 5685
Preludes, Book I: No. 11, La Danse De Puck - Welte-Mignon 2738
Arabesque No. 1 in E Major - Duo-Art S-30927
Children's Corner: No. 6 Golliwogg's Cake-Walk - Duo-Art 5941
Preludes, Book I: No. 1, Danseuses De Delphes - Welte-Mignon 2738
Lohengrin (Arr. For Piano by Leopold): Act I Excerpts - Duo-Art 71790
Lohengrin (Arr. For Piano by Leopold): Act II Excerpts - Duo-Art 71940
Lohengrin (Arr. For Piano by Leopold): Act III Excerpts - Duo-Art 72980
Lohengrin: Elsa's Bridal Chorus (Wedding March, Arr. Solo Piano by Mottl) - Welte-Mignon 1348
Tristan Und Isolde: Liebestod - Isolde's Love Death. Act 3 (Arr. Solo Piano by Grundfeld) - Duca 518
Die Walküre, WWV 86B: Magic Fire Music (Arr. Solo Piano by Brassin) - Dc 517_nan
Stimmungsbilder, Op. 9: No. 4, Reverie (Träumerei) - Welte-Mignon 1189
Well-Tempered Clavier, Book I: Prelude No. 5 in D Major BWV 850 - Duo-Art 5650
Tandeln Und Scherzen. Bach, Mozart & Golden Age Piano Music
Hungarian Dance No. 5, in F-Sharp Minor (Arr. Solo Piano by Bauer) - Duo-Art 5814
Home. Beethoven, Mozart and Brahms Piano Music
Chromatic Fantasia in D Minor, Bvw 903 (Arr. Solo Piano by Von Bülow) - Upon Piano Roll Duo-Art 7316, Issued 1929
From County Derry. Grainger, Bach & Masterworks from Golden Age of the Piano
Fantasie Impromptu, Op. 66, C-Sharp Minor - Duo-Art 6058
Schmetterling. Piano Music by Chopin, Schumann and Legacy
Annees De Pelerinage. 1st Year. No. 7 (Eglogue; Ecologue) - Duo-Art 74010
Trio No. 5 in G Major: Gypsy Rondo (Arr. Solo Piano by Bauer) - Duo-Art 7254
Harmonies. Chopin, Mozart, Bach & Legacy Piano Music
Hungarian Dance No. 8 in A Minor (Arr. Solo Piano by Bauer) - Duo-Art 5668
String Quintet in E Major, Op. 11: No. 5, G275, Minuet in A Major (Arr. By Bauer) - Duo-Art 5889
Toccata. Piano Essentials from the Golden Age
String Quartet, Op. 12: Canzonetta (Arr. For Solo Piano by Harold Bauer) - Due-Art 510-4
Piano Concerto No. 2, Op. 22 (Arr. Solo Piano by Bauer): III. Presto - Duo-Art 5973
Fantasia in C Minor, K. 475 - Duo-Art 7073
Piano Concerto No. 2, Op. 22 (Arr. Solo Piano by Bauer): I. Andante Sostenuto - Duo-Art 5953
Flâneries. Brahms, Saint-Säens and Heritage
Decorations. Piano Evocations from the Golden Age