Alex Klein (born 1964, Porto Alegre, Brazil) is an oboist. Klein joined the Chicago Symphony Orchestra as principal oboe at age 30 in 1995. He won the 2002 Grammy Award for Best Instrumental soloist
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
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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
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3 Songs, Op. 7: No. 1, Après un rêve (Arr. for Oboe & Harp)
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Meditation from Thaïs (Arr. for Oboe & Harp)
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7 Canciones populares Españolas (Excerpts Arr. for Oboe & Harp): No. 5, Nana
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Rêverie, L. 68 (Arr. S. Jolles & H. Lucarelli for Oboe & Harp)
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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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76a7454c49ab83b943db7cf7e116b1902b4724be072e9f67e43569d881f3f83. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USPMZ2317704.
Vocalise, Op. 34 No. 14 (Arr. for Oboe & Harp)
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2 Arabesques, L. 66: No. 1, Andantino con moto (Arr. A. Klein for Oboe & Harp)
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Sicilienne, Op. 78 (Arr. for Oboe & Harp)
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Oblivion (Arr. A. Klein for Oboe & Harp)
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Tanti anni prima (Arr. A. Klein for Oboe & Harp)
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When There Are No Words: Revolutionary Works for Oboe & Piano
L' histoire du soldat (The Soldier's Tale)
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Oboe Concerto, H. 353: III. Poco Allegro
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Krommer: Oboe Concertos Nos. 1 and 2 / Hummel: Introduction, Theme and Variations
Oboe Concerto No. 2 in F Major, Op. 52: I. Allegro
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Introduction, Theme and Variations in F Major, Op. 102
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Oboe Concerto No. 1in F Major, Op. 37: I. Allegro
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Oboe Concerto No. 1in F Major, Op. 37: II. Adagio
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Oboe Concerto No. 1in F Major, Op. 37: III. Rondo: Allegro
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Oboe Concerto No. 2 in F Major, Op. 52: II. Adagio
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Oboe Concerto No. 2 in F Major, Op. 52: III. Rondo
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Chamber Music - Klughardt, A. / Loeffler, C. M. / White, F. / Hindemith, P. (Alex Klein, Richard Young, Ricardo Castro) (Poetic Inspirations)
The Greatest Works Schubert (N) ever Wrote for the Oboe
Song Without Words (Version for Oboe & Piano)
Liquid Melancholy: Clarinet Music of James M Stephenson
Oborama: III. Graceful, wistful [oboe d'amore]
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Bliss: Oboe Quintet / Britten: Phantasy / String Quartet No. 3