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album: The Zilliacus Quartet: Grieg, Maier, Röntgen - String Quartets
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track: Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
track: Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
track: Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
track: Violin Concerto No. 1 in A Minor, BWV 1041: I. [Allegro moderato]
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: II. Adagio
track: Concerto for Violin and Oboe in C Minor, BWV 1060R: III. Allegro
track: String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo
track: String Sextet No. 2 in G Major, Op. 36: II. Scherzo. Allegro non troppo
track: String Sextet No. 2 in G Major, Op. 36: III. Adagio
track: String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro

Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
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audio: Violin Concerto No. 2 in E Major, BWV 1042: I. Allegro
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Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
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audio: Violin Concerto No. 2 in E Major, BWV 1042: II. Adagio
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Violin Concerto No. 2 in E Major, BWV 1042: III. Allegro assai
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  date published: 2026-06-13T15:41:10Z
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: I. [Allegro moderato]
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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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Concerto for Violin and Oboe in C Minor, BWV 1060R: I. Allegro
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Concerto for Violin and Oboe in C Minor, BWV 1060R: II. Adagio
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Concerto for Violin and Oboe in C Minor, BWV 1060R: III. Allegro
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String Sextet No. 2 in G Major, Op. 36: I. Allegro non troppo
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String Sextet No. 2 in G Major, Op. 36: II. Scherzo. Allegro non troppo
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  value: 2026-07-31T13:50:38+00:00
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

String Sextet No. 2 in G Major, Op. 36: III. Adagio
type: MusicRecording
duration: PT8M18S
duration ms: 498653
explicit: false
by artist: Johannes Brahms
by artist: Isabelle Faust
by artist: Julia-Maria Kretz
by artist: Stefan Fehlandt
by artist: Pauline Sachse
by artist: Christoph Richter
by artist: Xenia Jankovic
in album: Brahms: Violin Concerto; String Sextet No. 2
  type: MusicAlbum
  date published: 2011-03-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cc95335c1762797ccec8adffcded9947e0f78e8d9c810377eadcd6af0b2c28. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FRZ141002060.
  date published: 2026-07-30T15:42:38Z
audio: String Sextet No. 2 in G Major, Op. 36: III. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.053
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.165
  additional property: Energy
    type: PropertyValue
    value: 0.059
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.899
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.753
  additional property: Liveness
    type: PropertyValue
    value: 0.216
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.079
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.296
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: FRZ141002060
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960273
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ141002060
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
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

String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro
type: MusicRecording
duration: PT8M4S
duration ms: 484373
explicit: false
by artist: Johannes Brahms
by artist: Isabelle Faust
by artist: Julia-Maria Kretz
by artist: Stefan Fehlandt
by artist: Pauline Sachse
by artist: Christoph Richter
by artist: Xenia Jankovic
in album: Brahms: Violin Concerto; String Sextet No. 2
  type: MusicAlbum
  date published: 2011-03-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2319100a5ace84da8053eb1cea24515a705376ff9796e3f6431cecda65583899. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRZ141002070.
  date published: 2026-07-31T15:20:15Z
audio: String Sextet No. 2 in G Major, Op. 36: IV. Poco allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.684
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.311
  additional property: Energy
    type: PropertyValue
    value: 0.139
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.908
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.725
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.292
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.991
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: FRZ141002070
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960418
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ141002070
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
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