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type: MusicGroup
genre: classical
popularity: 35
followers: 16
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additional property: OTSVerifyInstructions
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  value: 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 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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track: Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
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  by artist: Johann Sebastian Bach
  by artist: Janine Jansen
  by artist: Boris Brovtsyn
  by artist: Cindy Albracht
  by artist: Frederik Paulsson
  by artist: Julia-Maria Kretz
  by artist: Tijmen Huisingh
  by artist: Monika Urbonaite
  by artist: Nimrod Guez
  by artist: Pauline Sachse
  by artist: Maarten Jansen
  by artist: Rick Stotijn
  by artist: Jan Jansen
  in album: Bach Concertos
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    date published: 2013-01-01
  genre: classical
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  additional property: OTSTimestamp
    type: PropertyValue
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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
    type: DigitalDocument
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    date published: 2026-06-13T13:32:09Z
  audio: Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
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track: Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
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  by artist: Frederik Paulsson
  by artist: Julia-Maria Kretz
  by artist: Tijmen Huisingh
  by artist: Monika Urbonaite
  by artist: Nimrod Guez
  by artist: Pauline Sachse
  by artist: Maarten Jansen
  by artist: Rick Stotijn
  by artist: Jan Jansen
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  genre: classical
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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: 2026-06-13T13:32:09Z
  audio: Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
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track: Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
track: Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
track: Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
track: Concerto for Violin and Oboe in C Minor, BWV 1060R: I. Allegro
track: Concerto for Violin and Oboe in C Minor, BWV 1060R: III. Allegro
track: Orchestral Suite No. 3 in D, BWV 1068: 2. Air

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Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
type: MusicRecording
duration: PT2M40S
duration ms: 160506
explicit: false
by artist: Johann Sebastian Bach
by artist: Janine Jansen
by artist: Boris Brovtsyn
by artist: Cindy Albracht
by artist: Frederik Paulsson
by artist: Julia-Maria Kretz
by artist: Tijmen Huisingh
by artist: Monika Urbonaite
by artist: Nimrod Guez
by artist: Pauline Sachse
by artist: Maarten Jansen
by artist: Rick Stotijn
by artist: Jan Jansen
in album: Bach Concertos
  type: MusicAlbum
  date published: 2013-01-01
genre: classical
genre: classical-piano
isrc code: GBF071301613
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additional property: CopyrightStatus
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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: 2026-06-13T13:32:09Z
audio: Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
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Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
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explicit: false
by artist: Johann Sebastian Bach
by artist: Janine Jansen
by artist: Boris Brovtsyn
by artist: Cindy Albracht
by artist: Frederik Paulsson
by artist: Julia-Maria Kretz
by artist: Tijmen Huisingh
by artist: Monika Urbonaite
by artist: Nimrod Guez
by artist: Pauline Sachse
by artist: Maarten Jansen
by artist: Rick Stotijn
by artist: Jan Jansen
in album: Bach Concertos
  type: MusicAlbum
  date published: 2013-01-01
genre: classical
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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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: 2026-06-13T12:53:06Z
audio: Violin Concerto No. 1 in A Minor, BWV 1041: II. Andante
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Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
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explicit: false
by artist: Johann Sebastian Bach
by artist: Janine Jansen
by artist: Boris Brovtsyn
by artist: Cindy Albracht
by artist: Frederik Paulsson
by artist: Julia-Maria Kretz
by artist: Tijmen Huisingh
by artist: Monika Urbonaite
by artist: Nimrod Guez
by artist: Pauline Sachse
by artist: Maarten Jansen
by artist: Rick Stotijn
by artist: Jan Jansen
in album: Bach Concertos
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  date published: 2013-01-01
genre: classical
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: 2026-06-13T12:47:07Z
audio: Violin Concerto No. 1 in A Minor, BWV 1041: III. Allegro assai
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Concerto for Violin and Oboe in C Minor, BWV 1060R: I. Allegro
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duration: PT4M58S
duration ms: 298986
explicit: false
by artist: Johann Sebastian Bach
by artist: Janine Jansen
by artist: Ramon Ortega Quero
by artist: Boris Brovtsyn
by artist: Cindy Albracht
by artist: Frederik Paulsson
by artist: Julia-Maria Kretz
by artist: Tijmen Huisingh
by artist: Monika Urbonaite
by artist: Nimrod Guez
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Concerto for Violin and Oboe in C Minor, BWV 1060R: III. Allegro
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  date published: 2026-06-13T13:32:09Z
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Orchestral Suite No. 3 in D, BWV 1068: 2. Air
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Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
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