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subject of: OpenTimestamps Proof of Existence
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track: Cello Concerto No. 6 in D Major, G. 479: I. Allegro
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  by artist: Accademia I Filarmonici Di Verona
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  by artist: Gian Andrea Lodovici
  by artist: Enrico Bronzi
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T05:17:02Z
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track: Cello Concerto No. 6 in D Major, G. 479: III. Allegro
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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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track: Cello Concerto No. 7 in G Major, G. 480: I. Allegro
track: Cello Concerto No. 7 in G Major, G. 480: II. Adagio
track: Cello Concerto No. 4 in C Major, G. 477: I. Allegro
track: Cello Concerto No. 4 in C Major, G. 477: II. Adagio
track: Cello Concerto No. 4 in C Major, G. 477: III. Allegro
track: Cello Concerto No. 9 in B-Flat Major, G. 482: I. Allegro Moderato
track: Cello Concerto No. 9 in B-Flat Major, G. 482: III. Rondo - Allegro
track: Cello Concerto No. 12 in E-Flat Major, G. Deest: I. Allegro moderato - Maestoso
track: Cello Concerto No. 12 in E-Flat Major, G. Deest: II. Largo
track: Cello Concerto No. 5 in D Major, G. 478: I. Allegro con spirito
track: Cello Concerto No. 5 in D Major, G. 478: III. Rondo

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Cello Concerto No. 7 in G Major, G. 480: I. Allegro
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duration: PT6M45S
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by artist: Accademia I Filarmonici Di Verona
by artist: Alberto Ambrosini
by artist: Gian Andrea Lodovici
by artist: Enrico Bronzi
by artist: Luigi Boccherini
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  date published: 2007-09-24
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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
audio: Cello Concerto No. 7 in G Major, G. 480: I. Allegro
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Cello Concerto No. 7 in G Major, G. 480: II. Adagio
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duration: PT4M2S
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by artist: Alberto Ambrosini
by artist: Luigi Boccherini
by artist: Enrico Bronzi
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  date published: 2007-09-24
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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: 2026-07-31T12:24:41Z
audio: Cello Concerto No. 7 in G Major, G. 480: II. Adagio
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Cello Concerto No. 4 in C Major, G. 477: I. Allegro
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by artist: Gian Andrea Lodovici
by artist: Enrico Bronzi
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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: 2026-07-08T03:20:19Z
audio: Cello Concerto No. 4 in C Major, G. 477: I. Allegro
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Cello Concerto No. 4 in C Major, G. 477: II. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Cello Concerto No. 4 in C Major, G. 477: II. Adagio
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Cello Concerto No. 4 in C Major, G. 477: III. Allegro
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duration: PT4M35S
duration ms: 275250
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by artist: Alberto Ambrosini
by artist: Luigi Boccherini
by artist: Enrico Bronzi
by artist: Gian Andrea Lodovici
in album: Boccherini: Cello Concertos Nos. 1-12
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
audio: Cello Concerto No. 4 in C Major, G. 477: III. Allegro
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Cello Concerto No. 9 in B-Flat Major, G. 482: I. Allegro Moderato
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duration: PT7M49S
duration ms: 469500
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by artist: Luigi Boccherini
by artist: Alberto Ambrosini
by artist: Enrico Bronzi
by artist: Gian Andrea Lodovici
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: Cello Concerto No. 9 in B-Flat Major, G. 482: I. Allegro Moderato
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Cello Concerto No. 9 in B-Flat Major, G. 482: III. Rondo - Allegro
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duration: PT5M15S
duration ms: 315250
explicit: false
by artist: Accademia I Filarmonici Di Verona
by artist: Luigi Boccherini
by artist: Alberto Ambrosini
by artist: Gian Andrea Lodovici
by artist: Enrico Bronzi
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
audio: Cello Concerto No. 9 in B-Flat Major, G. 482: III. Rondo - Allegro
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Cello Concerto No. 12 in E-Flat Major, G. Deest: I. Allegro moderato - Maestoso
type: MusicRecording
duration: PT5M57S
duration ms: 357750
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by artist: Luigi Boccherini
by artist: Gian Andrea Lodovici
by artist: Alberto Ambrosini
by artist: Enrico Bronzi
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Cello Concerto No. 12 in E-Flat Major, G. Deest: I. Allegro moderato - Maestoso
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Cello Concerto No. 12 in E-Flat Major, G. Deest: II. Largo
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duration: PT4M48S
duration ms: 288250
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by artist: Alberto Ambrosini
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
audio: Cello Concerto No. 12 in E-Flat Major, G. Deest: II. Largo
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Cello Concerto No. 5 in D Major, G. 478: I. Allegro con spirito
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Cello Concerto No. 5 in D Major, G. 478: I. Allegro con spirito
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Cello Concerto No. 5 in D Major, G. 478: III. Rondo
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by artist: Accademia I Filarmonici Di Verona
by artist: Alberto Ambrosini
by artist: Luigi Boccherini
by artist: Enrico Bronzi
by artist: Gian Andrea Lodovici
in album: Boccherini: Cello Concertos Nos. 1-12
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  date published: 2007-09-24
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