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subject of: OpenTimestamps Proof of Existence
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album: Antique Brasses: Original Brass Music on Period Instruments
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album: Crusell: Clarinet Concertos
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album: Crusell: Clarinet Concertos Nos. 1-3
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T22:27:44Z
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
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album: Crusell: The Last Warrior
album: Crusell: 3 Quartets for Clarinet & Strings
album: Crusell, B.H.: Clarinet Quartets Nos. 1-3
album: Crusell: Introduction et air suedois - Clarinet Concerto No. 2 - Concertante in B-Flat Major, Op. 3
album: Crusell, B.H.: Clarinet Concertos Nos. 1-3
album: Crusell
album: Crusell, B.H.: Clarinet Concertos Nos. 1 and 3 / Concertante in B Flat Major
album: Crusell: Clarinet Quartets Nos. 1-3
album: Crusell: Clarinet Concertos Nos. 1, 2 & 3
album: Crusell: The 3 Clarinet Concertos
album: Crusell: Concertante / Bassoon Concertino / Introduction and Swedish Air
album: Crusell: Clarinet Quartets Nos. 1, 2 & 3
album: Crusell, B.H.: Clarinet Quartets (Complete)
album: The Clarinet in Concert, Vol. 1: Bruch, Mendelssohn & Crusell
album: Weber: Clarinet Concerto No. 2 – Crusell: Clarinet Concerto No. 2
album: Crusell, C. Kreutzer & Reicha: Oboe Quintets

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Clarinet Concerto No. 3 in B-Flat Major, Op. 11: III. Alla pollacca
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
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Crusell: The Last Warrior
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date published: 2023-08-04

Crusell: 3 Quartets for Clarinet & Strings
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Crusell, B.H.: Clarinet Quartets Nos. 1-3
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Crusell: Introduction et air suedois - Clarinet Concerto No. 2 - Concertante in B-Flat Major, Op. 3
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T02:19:15Z
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Crusell, B.H.: Clarinet Concertos Nos. 1-3
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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track: Clarinet Concerto No. 3 in B-Flat Major, Op. 11: I. Allegro risoluto
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track: Clarinet Concerto No. 1 in E-Flat Major, Op. 1: I. Allegro
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Clarinet Concerto No. 2 in F Minor, Op. 5: III. Rondo. Allegretto
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Clarinet Concerto No. 3 in B-Flat Major, Op. 11: I. Allegro risoluto
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Clarinet Concerto No. 3 in B-Flat Major, Op. 11: II. Andante moderato
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  date published: 2026-07-30T15:42:38Z
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Clarinet Concerto No. 3 in B-Flat Major, Op. 11: III. Alla polacca
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Clarinet Concerto No. 1 in E-Flat Major, Op. 1: I. Allegro
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Clarinet Concerto No. 1 in E-Flat Major, Op. 1: II. Adagio
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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by artist: Gothenburg Symphony Orchestra
by artist: Okko Kamu
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genre: classical-era
genre: early-romantic-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
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Crusell
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date published: 2002-01-01

Crusell, B.H.: Clarinet Concertos Nos. 1 and 3 / Concertante in B Flat Major
type: MusicAlbum
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T02:19:15Z
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track: Clarinet Quartet No. 1 in E-Flat Major, Op. 2: II. Romanze
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
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    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  subject of: OpenTimestamps Proof of Existence
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track: Clarinet Quartet No. 2 in C Minor, Op. 4: II. Menuetto
track: Clarinet Quartet No. 2 in C Minor, Op. 4: III. Pastorale
track: Clarinet Quartet No. 2 in C Minor, Op. 4: IV. Rondo
track: Clarinet Quartet No. 3 in D Major, Op. 7: II. Un poco largo

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
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date published: 2026-07-31T12:24:41Z

Clarinet Quartet No. 2 in C Minor, Op. 4: I. Allegro molto agitato
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Clarinet Quartet No. 2 in C Minor, Op. 4: II. Menuetto
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duration: PT4M38S
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by artist: Anu Airas
by artist: Ilkka Palli
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genre: classical-era
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
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Clarinet Quartet No. 2 in C Minor, Op. 4: IV. Rondo
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Clarinet Quartet No. 3 in D Major, Op. 7: II. Un poco largo
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  date published: 2026-07-31T02:19:15Z
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Crusell: Clarinet Concertos Nos. 1, 2 & 3
type: MusicAlbum
date published: 1994-03-01

Crusell: The 3 Clarinet Concertos
type: MusicAlbum
date published: 1991-01-01

Crusell: Concertante / Bassoon Concertino / Introduction and Swedish Air
type: MusicAlbum
date published: 1990-11-30

Crusell: Clarinet Quartets Nos. 1, 2 & 3
type: MusicAlbum
date published: 1989-01-01

Crusell, B.H.: Clarinet Quartets (Complete)
type: MusicAlbum
date published: 1989-01-01

The Clarinet in Concert, Vol. 1: Bruch, Mendelssohn & Crusell
type: MusicAlbum
date published: 1987-09-01

Weber: Clarinet Concerto No. 2 – Crusell: Clarinet Concerto No. 2
type: MusicAlbum
date published: 1985-04-01

Crusell, C. Kreutzer & Reicha: Oboe Quintets
type: MusicAlbum
date published: 1985