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 0x4b88b3de7bbf82caa20fab80e33a93371a7ec564d7e0ce808ecd32f990f4a789. 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/cf128147-5bde-4cbf-8d53-d1643b46237b.json and https://artists.proofprofile.net/proofs/artist/cf128147-5bde-4cbf-8d53-d1643b46237b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2 Romantische Gesänge, Op. 106: I. Harald
2 Romantische Gesänge, Op. 106: II. Der Weidenbaum
4 Notturnos, Op. 22: I. Wär's dunkel, ich läge im Walde
4 Notturnos, Op. 22: II. Nacht ist wie ein stilles Meer
4 Notturnos, Op. 22: IV. Wie schön hier zu verträumen
4 Nocturnes, Op. 22: No. 1, Wär's dunkel, ich läge im Walde
4 Nocturnes, Op. 22: No. 2, Nacht ist wie ein stilles Meer
4 Nocturnes, Op. 22: No. 4, Wie schön, hier zu verträumen
Lili Boulanger: Hymne au Soleil. Chorwerke
Howard Griffiths: Dmitri Shostakovich, Jazz Suite No 2
Jazz Suite No 2 (Suite für Varieté Orchester): 1. Marsch
Brandenburgisches Staatsorchester Frankfurt
Jazz Suite No 2 (Suite für Varieté Orchester): 2. Tanz
Jazz Suite No 2 (Suite für Varieté Orchester): 3. Tanz
Jazz Suite No 2 (Suite für Varieté Orchester): 4. Kleine Polka
Jazz Suite No 2 (Suite für Varieté Orchester): 5. Lyrischer Walzer
Jazz Suite No 2 (Suite für Varieté Orchester): 6. Walzer
Jazz Suite No 2 (Suite für Varieté Orchester): 7. Walzer
Jazz Suite No 2 (Suite für Varieté Orchester): 8. Finale
Concerto for Piano and Trumpet in C Minor, Op. 35: 1. Allegro
Concerto for Piano and Trumpet in C Minor, Op. 35: 2. Lento
Concerto for Piano and Trumpet in C Minor, Op. 35: 3. Moderato
Concerto for Piano and Trumpet in C Minor, Op. 35: 4. Allgero con brio
The Golden Age, Op. 22a (Suite): 1. Einleitung
The Golden Age, Op. 22a (Suite): 2. Adagio
The Golden Age, Op. 22a (Suite): 3. Polka
The Golden Age, Op. 22a (Suite): 4. Tanz
Sonata for Piano: "...И Тропа Расширялась" / "...I Стезя Розширялась"
Galina Ustvolskaya: Piano Sonatas Nos. 1 - 6
Pictures at an Exhibition: II. The old castle
Pictures at an Exhibition: Promenade III
Pictures at an Exhibition: III. Les Tuileries
Pictures at an Exhibition: V. The Ballet of Unhatched Chicks in their Shells
Pictures at an Exhibition: VI. Samuel Goldberg and Schyule
Pictures at an Exhibition: VII. The market at limoges
Pictures at an Exhibition: VIII. Catacombes
Pictures at an Exhibition: Cum mortuis in lingua mortua
Pictures at an Exhibition: IX. The Hut of Fowl's Legs
Pictures at an Exhibition: X. The Great Gate of Kiev
24 Preludes, Op. 11: No. 10 in C-Sharp Minor
24 Preludes, Op. 11: No. 12 in G-Sharp Minor
24 Preludes, Op. 11: No. 14 in E-Flat Minor
24 Preludes, Op. 11: No. 21 in B-Flat Major
24 Preludes, Op. 11: No. 19 in E-Flat Major
3 Pieces, Op. 45: No. 1, Feuillet d'Album
Piano Sonata No. 5 in F-Sharp Major, Op. 53
2 Pieces, Op. 59: No. 1, Poème. Allegretto
2 Pieces, Op. 59: No. 2, Prelude. Sauvage belliqueux
2 Preludes, Op. 67: No. 1, Andante piacevole
Keyboard Sonata in E Major, K.135/L.224/P.234
Keyboard Sonata in D Minor, K.1/L.366/P.57
Images, Book 2: No. 1. Cloches a travers les feuilles
Images, Book 2: No. 2. Et la lune descend sur le temple qui fut
Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 version): I. Allegro agitato - Meno mosso
Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 version): II. Non allegro - Lento - Piu mosso
Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 version): III. Allegro molto - Poco meno mosso - Presto
3 Movements from Petrushka: No. 1. Danse russe (Russian Dance)
3 Movements from Petrushka: No. 2. Chez Petrouchka (Petrushka's Cell)
3 Movements from Petrushka: No. 3. La Semaine grasse (The Shrove-tide Fair)