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 0x0db964971a06008b19353768c2bdf6f7c685a3beeed4672ebb0d67659a788e1d. 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/28a116f7-6676-4623-98f1-7c7bbe3a3555.json and https://artists.proofprofile.net/proofs/artist/28a116f7-6676-4623-98f1-7c7bbe3a3555.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Grand Fantasy on Porgy and Bess: Summertime (after G. Gershwin)
7 Virtuoso Etudes: No. 1, I Got Rhythm (after G. Gershwin)
Piano Sonata in E-Flat Minor, Op. 26: I. Allegro energico
Piano Sonata in E-Flat Minor, Op. 26: II. Allegro vivace e leggero
Piano Sonata in E-Flat Minor, Op. 26: III. Adagio mesto
Piano Sonata in E-Flat Minor, Op. 26: IV. Fuga. Allegro con spirito
The Man I Love (Arr. Grainger for Piano)
3 Preludes: No. 1, Allegro ben ritmato e deciso
3 Preludes: No. 2, Andante con moto e poco rubato
3 Preludes: No. 3, Allegro ben ritmato e deciso
Sometimes I Feel Like a Motherless Child
12 Variations on "Ah, vous dirai-je Maman", K. 265: Theme
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 1
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 2
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 3
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 4
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 5
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 6
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 7
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 8
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 9
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 10
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 11. Adagio
12 Variations on "Ah, vous dirai-je Maman", K. 265: Var. 12. Allegro
Variations on a Nursery Song, Op. 25: Introduction. Maestoso
Variations on a Nursery Song, Op. 25: Theme. Allegro
Variations on a Nursery Song, Op. 25: Var. 1. Poco più mosso
Variations on a Nursery Song, Op. 25: Var. 2. Risoluto
Variations on a Nursery Song, Op. 25: Var. 3. L'istesso tempo
Variations on a Nursery Song, Op. 25: Var. 4. Molto meno mosso (Allegretto moderato)
Variations on a Nursery Song, Op. 25: Var. 5. Più mosso
Variations on a Nursery Song, Op. 25: Var. 6. Ancora più mosso (Allegro)
Variations on a Nursery Song, Op. 25: Var. 7. Walzer (Tempo giusto)
Variations on a Nursery Song, Op. 25: Var. 8. Alla marcia (Allegro moderato)
Variations on a Nursery Song, Op. 25: Var. 9. Presto - Andante rubato
Variations on a Nursery Song, Op. 25: Var. 10. Passacaglia (Adagio non troppo)
Variations on a Nursery Song, Op. 25: Var. 11. Choral (Maestoso)
Variations on a Nursery Song, Op. 25: Finale fugato. Allegro vivace
Children's Corner, CD 119: I. Doctor Gradus ad Parnassum
Children's Corner, CD 119: II. Jimbo's Lullaby
Children's Corner, CD 119: III. Serenade for the Doll
Children's Corner, CD 119: IV. The Snow Is Dancing
Children's Corner, CD 119: V. The Little Shepherd
Kinderszenen, Op. 15: No. 1, Von fremden Ländern und Menschen
Kinderszenen, Op. 15: No. 2, Kuriose Geschichte
Kinderszenen, Op. 15: No. 3, Hasche-Mann
Kinderszenen, Op. 15: No. 4, Bittendes Kind
Kinderszenen, Op. 15: No. 5, Glückes genug
Kinderszenen, Op. 15: No. 6, Wichtige Begebenheit
Kinderszenen, Op. 15: No. 9, Ritter vom Steckenpferd
Kinderszenen, Op. 15: No. 10, Fast zu ernst
Kinderszenen, Op. 15: No. 11, Fürchtenmachen
Kinderszenen, Op. 15: No. 12, Kind im Einschlummern
Kinderszenen, Op. 15: No. 13, Der Dichter spricht
Piano Concerto No. 1 in G Minor, Op. 25: I. Molto allegro con fuoco
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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67b51e5ba39d0e8c562fa655e6b023a1c9e4ca55477874e1f47c41ebd1cd236. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2pW9dJFHeuZ1h3wT3OW95w.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2pW9dJFHeuZ1h3wT3OW95w.
Piano Concerto No. 1 in G Minor, Op. 25: II. Andante
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e7ab74ecce31d748242f23e33694f41a5ae90dc9971dc11b51c2b0e8ae689e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3eWGaQ6TMyc80yKuZcx2Zj.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3eWGaQ6TMyc80yKuZcx2Zj.
Piano Concerto No. 1 in G Minor, Op. 25: III. Presto – Molto allegro e vivace
A Midsummer Night's Dream, Op. 61: I. Scherzo (Transcr. Rachmaninoff for Piano)
A Midsummer Night's Dream, Op. 61: VII. Nocturne (Transcr. Moszkowski for Piano)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9242127142ca9d54f7388e4443962fbc0019539bd003582def312d4439ef0dde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1T8GsTMrjvNzfC80n6ac4r.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1T8GsTMrjvNzfC80n6ac4r.
Mendelssohns Lieder, S. 547: I. Auf Flügeln des Gesanges (After Op. 34/2)
Lieder ohne Worte VI, Op. 67: II. Allegro leggiero, MWV U145 "Lost Illusions"
Lieder ohne Worte VI, Op. 67: VI. Allegretto non troppo, MWV U188 "Cradle Song"
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f5a85c4fc28309afc6357a1579ebd24647ca2e56eee477d480c313d36feb4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16wS4b9HqXrCv1kIS84AKW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/16wS4b9HqXrCv1kIS84AKW.
Easter Sonata: I. Allegro assai moderato
Easter Sonata: II. Largo e molto espresso – Poco più mosso
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2015f436b84110afe11b9429dcb9fc9d60737da4a34d676774c7c66e8c051a67. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3t4cTsFBmmQYMnd5S5yiTO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3t4cTsFBmmQYMnd5S5yiTO.
Après un rêve, Op. 7, No. 1 (Arr. for Cello and Piano)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b4f058952bfc817d16b04577a8cc81494fc6cce3bda83306f69680eff38eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/38Zh5hooGK41aS3DfxDdtD.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/38Zh5hooGK41aS3DfxDdtD.
Liederkreis, Op. 39: No. 5 Mondnacht (Arr. Clara Schumann)
In the Bleak Midwinter (Arr. Kanneh-Mason)