Leonid Hambro (June 26, 1920 – October 23, 2006) was an American concert pianist and composer. Life Hambro was born in Chicago, the son of immigrant Lithuanian Jews; his father was a pianist accompan
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde00ec6669eab78a89fd859122ad5374c144eb418d08e970d9e6d7f5d4bbca. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6ca5d29-4f50-4232-b4d6-dbdc2703e836.json and https://artists.proofprofile.net/proofs/artist/e6ca5d29-4f50-4232-b4d6-dbdc2703e836.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brahms: Violin Concerto, Op. 77 & Violin Sonata No. 3, Op. 108
Ludwig Van Beethoven & Encores by Bizet, Chopin, Fauré, Pianelli and Pierné
Schubert: Arpeggione Sonata & Boccherini: Cello Sonata in A Major & Sammartini: Cello Sonata in G Major
Sonata for Cello and Basso continuo in G Major: III. Vivace
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Sonata for Arpeggione and Piano in A Minor, D. 821: I. Allegro moderato
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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
Sonata for Cello and Basso continuo in G Major: I. Allegro
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Sonata for Cello and Basso continuo in G Major: II. Grave
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Franck: Cello Sonata in A Major, FWV 8 & Grieg: Cello Sonata in A Minor, Op. 36 (Remastered)
Cello Sonata in A Minor, Op. 36 (Remastered): I. Allegro agitato
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Beethoven: Cello Sonata No. 3 & 5 (Remastered)
Cello Sonata No. 3 in A Major, Op. 69 (Remastered): I. Allegro ma non tanto
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Mozart: Concertos pour piano Nos. 17 & 19 (Mono Version)
Beethoven: Cello Sonata No.5, Op.102 No.2
Beethoven: Cello Sonata No.4, Op.102 No.1
Thuille - Dvořák - Telemann - Reicha - Piston - Rimsky-Korsakov - Janáček
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Sextet in B-Flat, Op. 6: IV. Finale. Molto vivace
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Wind Quintet in E-Flat Major, Op. 88, No. 2: III. Poco andante - Grazioso
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Quintet for Wind Instruments: III. Scherzando
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Quintet for Wind Instruments: IV. Allegro comodo
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Suite in B-Flat Major, Op. 4: III. Gavotte
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Aaron Copland Premieres: Concerto for Clarinet & String Orchestra, Sextet for String Qt, Clarinet & Piano, Qt. for Piano & Strings
Camille Saint-Saens Carnival Of The Animals; Walton Facade
Milestones of a Violin Legend: Ricardo Odnoposoff, Vol. 4
The Art of Robert Bloom: Chamber Music, Vol. 3
Milestones of a Cello Legend: Leonard Rose, Vol. 5
Milhaud: Symphonie No. 1, Suite française & Cantate de l'enfant et de la mère (Mono Version)
Milestones of a Cello Legend: Leonard Rose, Vol. 4
Brahms: Violin Concerto in D Major, Op. 77 (2021 Remastered Version)
Brahms: Cello Sonata No. 1, Op. 38 & Cello Sonata No. 2, Op. 99 (Remastered)