thumb|Giltburg in 2019 Boris Leonidovich Giltburg (; born June 21, 1984) is an Israeli classical pianist, born in the Soviet Union. Biography Giltburg was born into a Jewish family in Moscow, th
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 0xce8d4abd4efdf951e2e9ced56978b5c20e60600ff30e41a99d67760ef76f52c3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cf30bc2-3494-4ed8-88a6-aae7175925ec.json and https://artists.proofprofile.net/proofs/artist/5cf30bc2-3494-4ed8-88a6-aae7175925ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Schumann: Carnaval, Davidsbündlertänze & Papillons
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
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Piano Trio No. 1 in B-Flat Major, Op. 21, B. 51: I. Allegro molto
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Piano Trio No. 1 in B-Flat Major, Op. 21, B. 51: IV. Finale. Allegro vivace
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Piano Trio No. 2 in G Minor, Op. 26, B. 56: I. Allegro moderato
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Piano Trio No. 2 in G Minor, Op. 26, B. 56: II. Largo
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Piano Trio No. 3 in F Minor, Op. 65, B. 130: III. Poco adagio
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Dumky for Piano Trio, Op. 90, B. 166: V. Allegro
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Beethoven: Piano Concertos Nos. 3 & 4, Opp. 37 & 58
Piano Concerto No. 5 in E-flat Major, Op. 73, "emperor": Ii. Adagio un poco moto
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Piano Sonata No. 14 in C-sharp Minor, Op. 27, No. 2, "moonlight": I. Adagio sostenuto
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Violin Sonata No. 5 in F Major, Op. 24, "spring": Ii. Adagio molto espressivo
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Rachmaninov: Piano Concerto Nos. 1 & 4, Rhapsody on a Theme of Paganini
Piano Concerto No. 1 in F-Sharp Minor, Op. 1 (1917 Version): II. Andante
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Rhapsody on a Theme of Paganini, Op. 43: Variation 6. L'istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 9. L'istesso tempo
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Rhapsody on a Theme of Paganini, Op. 43: Variation 12. Tempo di menuetto
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Rhapsody on a Theme of Paganini, Op. 43: Variation 17. —
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Rhapsody on a Theme of Paganini, Op. 43: Variation 18. Andante cantabile
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Piano Concerto No. 4 in G Minor, Op. 40 (1941 Version): I. Allegro vivace (alla breve)
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String Quintet No. 2 in G Major, Op. 111: IV. Vivace ma non troppo presto
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Beethoven 32, Vol. 9: Piano Sonatas Nos. 30-32
Piano Sonata No. 30 in E Major, Op. 109: III. Gesangvoll, mit innigster Empfindung. Andante molto cantabile ed espressivo
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Beethoven 32, Vol. 8: Piano Sonatas Nos. 27-29
Beethoven 32, Vol. 7: Piano Sonatas Nos. 23-26
Beethoven 32, Vol. 6: Piano Sonatas Nos. 19-22
Beethoven 32, Vol. 5: Piano Sonatas Nos. 16-18
Beethoven 32, Vol. 4: Piano Sonatas Nos. 12-15
Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": I. Adagio sostenuto
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Beethoven 32, Vol. 3: Piano Sonatas Nos. 8-11
Piano Sonata No. 8 in C Minor, Op. 13 "Pathétique": II. Adagio cantabile
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Beethoven 32, Vol. 2: Piano Sonatas Nos. 4-7
Beethoven 32, Vol. 1: Piano Sonatas Nos. 1-3
Morceaux de fantaisie, Op. 3: No. 2 in C-Sharp Minor. Prélude
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10 Préludes, Op. 23: No. 1 in F-Sharp Minor. Largo
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10 Préludes, Op. 23: No. 2 in B-Flat Major. Maestoso
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10 Préludes, Op. 23: No. 3 in D Minor. Tempo di minuetto
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10 Préludes, Op. 23: No. 4 in D Major. Andante cantabile
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10 Préludes, Op. 23: No. 5 in G Minor. Alla marcia
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10 Préludes, Op. 23: No. 6 in E-Flat Major. Andante
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10 Préludes, Op. 23: No. 7 in C Minor. Allegro
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10 Préludes, Op. 23: No. 8 in A-Flat Major. Allegro vivace
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10 Préludes, Op. 23: No. 10 in G-Flat Major. Largo
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13 Préludes, Op. 32: No. 5 in G Major. Moderato
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13 Préludes, Op. 32: No. 7 in F Major. Moderato
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13 Préludes, Op. 32: No. 9 in A Major. Allegro moderato
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13 Préludes, Op. 32: No. 10 in B Minor. Lento
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13 Préludes, Op. 32: No. 12 in G-Sharp Minor. Allegro
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Rachmaninoff: Piano Concerto No. 3 - Variations on a Theme of Corelli
Piano Concerto No. 3 in D Minor, Op. 30: II. Intermezzo. Adagio - Un poco più mosso
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Variations on a Theme of Corelli, Op. 42
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Piano Quintet No. 2, Op. 81, B. 155: I. Allegro, ma non tanto
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Piano Quintet No. 2, Op. 81, B. 155: II. Dumka. Andante con moto
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Piano Quintet No. 2, Op. 81, B. 155: III. Scherzo - Furiant. Molto vivace
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String Quintet, Op. 97, B. 180: I. Allegro non tanto
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String Quintet, Op. 97, B. 180: III. Larghetto
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Piano Quintet No. 2, Op. 81, B. 155: IV. Finale. Allegro
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Rachmaninov: Piano Concerto No. 2 in C Minor, Op. 18 & Études-tableaux, Op. 33
Shostakovich: Piano Concertos Nos. 1 & 2 and String Quartet No. 8
Piano Concerto No. 2 in F Major, Op. 102: II. Andante
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Rachmaninoff: Études-tableaux, Op. 39 & 6 Moments musicaux, Op. 16
Études-tableaux, Op. 39: No. 1, Allegro agitato
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Études-tableaux, Op. 39: No. 2, Lento assai
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Études-tableaux, Op. 39: No. 3, Allegro molto
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Études-tableaux, Op. 39: No. 5, Appassionato
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Études-tableaux, Op. 39: No. 8, Allegro moderato
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Études-tableaux, Op. 39: No. 9, Allegro moderato
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6 Moments musicaux, Op. 16: No. 1, Andantino
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6 Moments musicaux, Op. 16: No. 3, Andante cantabile
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6 Moments musicaux, Op. 16: No. 4, Presto
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6 Moments musicaux, Op. 16: No. 5, Adagio sostenuto
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6 Moments musicaux, Op. 16: No. 6, Maestoso
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Études-tableaux, Op. 39: No. 4, Allegro assai
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Beethoven: Piano Sonatas Nos. 8, 21 & 32
Rachmaninov, Grieg & Liszt: Romantic Sonatas
Piano Sonata in E Minor, Op. 7: I. Allegro moderato
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Pictures at an Exhibition: The Old Castle, Andantino molto
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Rachmaninov: Rhapsody on a Theme of Paganini, Op. 43: Variation 18. Andante cantabile
Bagatelle No. 25 in A Minor, WoO 59 "Für Elise"
Andante in F Major, WoO 57 "Andante favori"
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String Quartet No. 8 in C Minor, Op. 110: II. Allegro molto (Arr. B. Giltburg for Piano)
Rachmaninoff: Piano Sonatas Nos. 1 & 2 & Isle of the Dead, Op. 29 (Arr. for Piano by Georgy Kirkor & Boris Giltburg)
Piano Sonata No. 1 in D Minor, Op. 28: I. Allegro moderato
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Piano Sonata No. 1 in D Minor, Op. 28: II. Lento
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Piano Sonata No. 1 in D Minor, Op. 28: III. Allegro molto
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Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 Version): I. Allegro agitato
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Isle of the Dead, Op. 29 (Arr. for Piano by Georgy Kirkor & Boris Giltburg)
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Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 Version): II. Non allegro
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Piano Sonata No. 2 in B-Flat Minor, Op. 36 (1931 Version)
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Schumann: Piano Sonata No.1 In F Sharp Minor Op.11
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0f932e9a6e5b218f6b2c46f8992d5e4f35041b20e1af1a2c56ff6f2dfa9458. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199493314.
Rachmaninoff: Piano Sonata No. 2: II. Non allegro - Lento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b1559cfa5e0c26b46b366dea38d2b26bb6641f6f013728629e874f77fc9c2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192031102.