Karol Maciej Szymanowski (; 3 October 188229 March 1937) was a Polish composer, pianist and writer. He was a member of the modernist Young Poland movement that flourished in the late 19th and early 20
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x0adfb216493a7c965e6c367f6f3e5e94f5ddead9ee32f10fbe0e78543f1f25e1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f42c3e8-486a-47d3-8a22-51ed31b0b21f.json and https://artists.proofprofile.net/proofs/artist/0f42c3e8-486a-47d3-8a22-51ed31b0b21f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Passages. Hidden Treasures of Classical Piano.
11 Bagatelles, Op. 119: No. 1, Allegretto
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Haydn: Sonata in D, Hob.XVI:37: II. Largo E Sostenuto - From Aeolian Piano Roll
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Piers Lane Goes to Town Again: Aspects of the Dance
Keyboard Suite in E Minor: III. Allemande
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16 German Dances, D. 783: No. 10 in A Minor
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34 Valses sentimentales, D. 779: No. 13 in A Major
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20 Mazurkas, Op. 50: No. 1, Sostenuto. Molto rubato
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1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Reminiscences. Hidden Treasures of Classical Piano
Szymanowski: Complete Music for Violin & Piano
Tchaikovsky: The Nutcracker, Op. 71, Act 2: No. 12a, Divertissement. Chocolate, Spanish Dance
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Tchaikovsky: The Nutcracker, Op. 71, Act 2: No. 12c, Divertissement. Tea, Chinese Dance
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Tchaikovsky: The Nutcracker, Op. 71, Act 2: No. 12d, Divertissement. Trepak, Russian Dance
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Tchaikovsky: The Nutcracker, Op. 71, Act 2: No. 12e, Divertissement. Dance of the Reed-Flutes
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Beethoven: Symphony No. 2 in D Major, Op. 36: III. Scherzo. Allegro
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Satie / Orch. Debussy: 3 Gymnopédies: No. 3, Lent et grave
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Orff: Carmina Burana, Introduction "Fortuna Imperatrix Mundi": O Fortuna
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Orff: Carmina Burana, Pt. 1 "Uf dem Anger": Tanz
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Orff: Carmina Burana, Pt. 2 "In taberna": Estuans interius
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Shostakovich: Symphony No. 14 in G Minor, Op. 135: II. Malagueña
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Mussorgsky: Pictures at an Exhibition: Promenade I (Orch. Ravel, M. A 24)
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Mussorgsky: Pictures at an Exhibition: Il. Il vecchio castello (Orch. Ravel, M. A 24)
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Mussorgsky: Pictures at an Exhibition: III. Tuileries (Orch. Ravel, M. A 24)
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Mussorgsky: Pictures at an Exhibition: V. Ballet of the Unhatched Chicks (Orch. Ravel, M. A 24)
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Mussorgsky: Pictures at an Exhibition: VII. Limoges, le marché (Orch. Ravel, M. A 24)
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Mussorgsky: Pictures at an Exhibition: X. The Hut on Fowl's Legs "Baba Yaga" (Orch. Ravel, M. A 24)
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Mussorgsky / Orch. Ravel: Pictures at an Exhibition: XI. The Knight's Gate in the Old Capital of Kiev
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Haydn: Symphony No. 88 in G Major, Hob. I:88: IV. Finale. Allegro con spirito
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Szymanowski: Songs of a Fairy-Tale Princess, Op. 31: No. 2, The Nightingale
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Stravinsky: The Rite of Spring, Pt. 1 "Adoration of the Eath": Introduction
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Stravinsky: The Rite of Spring, Pt. 1 "Adoration of the Eath": Ritual of Abduction
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Bizet: Carmen, WD 31, Act 1: Habanera. "L'amour est un oiseau rebelle" (Carmen, Chœur)
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Bizet: Carmen, WD 31, Act 1: Séguedille. "Près des remparts de Séville" (Carmen, Don José)
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Bizet: Carmen, WD 31, Act 2: "Votre toast, je peux vous le rendre" - "Toréador, en garde !" (Escamillo, Carmen, Frasquita, Mercédès, Moralès, Zuniga)
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Gershwin: Porgy and Bess, Act 1: "Summertime" (Clara, Chorus)
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Prokofiev: Violin Concerto No. 1 in D Major, Op. 19: III. Moderato
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Beethoven: Symphony No. 7 in A Major, Op. 92: II. Allegretto
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Schoenberg: Gurre-Lieder, Pt. 1: Introduktion. Mässig bewegt
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Beethoven: Symphony No. 9 in D Minor, Op. 125 "Choral": II. Molto vivace - Presto
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Mahler: Symphony No. 5 in C-Sharp Minor: I. Trauermarsch. In gemessenen Schritt. Streng. Wie ein Kondukt
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Mahler: Symphony No. 5 in C-Sharp Minor: IV. Adagietto. Sehr langsam
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Beethoven: Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Beethoven: Fidelio, Op. 72, Act 1: "Mir ist so wunderbar" (Marzelline, Leonore, Rocco, Jaquino)
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Messiaen: Éclairs sur l'au-delà...: X. Le chemin de l'invisible
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Mythes, Op. 30: 1. La fontaine d'Aréthuse
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King Roger - Hagios! Hagios!...Boze poblogoslaw Panie praodwieczny
Sir Simon Rattle/City of Birmingham Symphony Orchestra/CBSO Chorus/City of Birmingham Symphony Chorus/Robert Gierlach/Jadwiga Rappé/Andrew Burden
Sanctus: Himmlische Klassik / Heavenly Classics
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Variations on a Polish Folk Theme, Op. 10: Var. 5. Andantino
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