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description: Felix Ayo Losada (1 July 1933 – 24 September 2023) was a Spanish-born Italian violinist. He was a founder of the Italian ensemble I Musici and of the Quartetto Beethoven di Roma. He played in major co
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album: Pergolesi: Chamber Music for Strings
album: Vivaldi: Concerti Da Camera
album: Cinque concerti festivi
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album: Antonio Lucio Vivaldi: Las Cuatro Estaciones
album: Classical Christmas
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album: Turina: Violin Sonatas Nos. 1 and 2 / Sonata Espanola
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 2. Allemanda (Allegro)
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audio: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 2. Allemanda (Allegro)
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 5. Allegro
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 6. Minuetto (Vivace)
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Brandenburg Concerto No. 2 in F Major, BWV 1047: I. Allegro
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Cinque concerti festivi
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Vivaldi: Violin Concertos
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Classical Christmas
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track: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 1. Allegro
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track: Concerto a 5 in D, Op. 9, No. 12 for 2 Oboes, Strings,and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Oboe Concerto in G Minor, Op. 9 No. 8: I. Allegro
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Oboe Concerto in D Minor, Op. 9 No. 2: I. Allegro e non presto
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Oboe Concerto in D Minor, Op. 9 No. 2: III. Allegro
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Concerto for 2 Oboes in F Major, Op. 9 No. 3: I. Allegro
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Concerto for 2 Oboes in C Major, Op. 9 No. 9: II. Adagio, non troppo
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Concerto for 2 Oboes in F Major, Op. 9 No. 3: II. Adagio
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Concerto for 2 Oboes in F Major, Op. 9 No. 3: III. Allegro
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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by artist: Felix Ayo
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: The Complete Concertos/Adagio for Organ & Strings
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in F, Op. 9, No. 10 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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duration: PT3M27S
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explicit: false
by artist: Tomaso Albinoni
by artist: Felix Ayo
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: The Complete Concertos/Adagio for Organ & Strings
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genre: classical
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Concerto a 5 in F, Op. 9, No. 10 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in B-Flat Major, Op. 9, No. 11 for Oboe, Strings, and Continuo: 1. Allegro
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duration: PT4M26S
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explicit: false
by artist: Tomaso Albinoni
by artist: Heinz Holliger
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: The Complete Concertos/Adagio for Organ & Strings
  type: MusicAlbum
  date published: 1997-01-01
genre: classical
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Concerto a 5 in B-Flat Major, Op. 9, No. 11 for Oboe, Strings, and Continuo: 1. Allegro
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Concerto a 5 in B-Flat Major, Op. 9, No. 11 for Oboe, Strings, and Continuo: 2. Adagio
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duration: PT3M53S
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explicit: false
by artist: Tomaso Albinoni
by artist: Heinz Holliger
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: The Complete Concertos/Adagio for Organ & Strings
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genre: classical
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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: 2026-07-08T03:53:27Z
audio: Concerto a 5 in B-Flat Major, Op. 9, No. 11 for Oboe, Strings, and Continuo: 2. Adagio
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Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 1. Allegro
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by artist: Tomaso Albinoni
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by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: The Complete Concertos/Adagio for Organ & Strings
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genre: classical
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 1. Allegro
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Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 2. Adagio
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by artist: I Musici
by artist: Maria Teresa Garatti
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genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 2. Adagio
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Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 3. Allegro
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by artist: Maria Teresa Garatti
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genre: classical
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Concerto a 5 in D, Op. 9, No. 12 for 2 Oboes, Strings,and Continuo - Rev. Giegling: 3. Allegro
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Adagio for Strings and Organ in G minor
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track: Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": II. Largo
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track: Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
track: Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
track: Concerto for Violin and Strings in B flat , Op. 8/10 , RV 362 "La caccia": 2. Adagio
track: Concerto for Violin and Strings in E flat, Op. 8/5 , RV 253 "La tempesta di mare": 1. (Allegro e) presto

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OpenTimestamps Proof of Existence
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
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Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
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Concerto for Violin and Strings in B flat , Op. 8/10 , RV 362 "La caccia": 2. Adagio
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Concerto for Violin and Strings in E flat, Op. 8/5 , RV 253 "La tempesta di mare": 1. (Allegro e) presto
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Albinoni: 6 Concerti from Op. 9
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    date published: 2026-07-08T08:56:20Z
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Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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  value: https://explorer.copyrightchains.com/tx/0x54d3991703dc2f464ceefa07a090d63e67b295b5f486ed9a85c816179078ac9f
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700043
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d3991703dc2f464ceefa07a090d63e67b295b5f486ed9a85c816179078ac9f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA506700043.
  date published: 2026-07-08T03:22:41Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.576
  additional property: Energy
    type: PropertyValue
    value: 0.191
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.9
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.297
  additional property: Liveness
    type: PropertyValue
    value: 0.18
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.65
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.4
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
type: MusicRecording
duration: PT3M9S
duration ms: 189000
explicit: false
by artist: Tomaso Albinoni
by artist: Felix Ayo
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700044
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T07:24:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6058fd76dabf4716648c122fe049b0f919bc1586558752bb788dfeea6c23de58
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957043
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700044
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T13:52:39Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058fd76dabf4716648c122fe049b0f919bc1586558752bb788dfeea6c23de58. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/NLA506700044.
  date published: 2026-07-07T13:52:39Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
type: MusicRecording
duration: PT3M32S
duration ms: 212000
explicit: false
by artist: Tomaso Albinoni
by artist: Felix Ayo
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700045
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T23:36:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdaa09a1eebd212019d550bf8c3e41ae906c06697c3bafbd23b657bdd8e0be8e0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700045
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa09a1eebd212019d550bf8c3e41ae906c06697c3bafbd23b657bdd8e0be8e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA506700045.
  date published: 2026-07-08T03:53:27Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.799
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.168
  additional property: Liveness
    type: PropertyValue
    value: 0.049
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.806
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 1. Allegro
type: MusicRecording
duration: PT3M47S
duration ms: 227000
explicit: false
by artist: Tomaso Albinoni
by artist: Heinz Holliger
by artist: Maurice Bourgue
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700346
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:10:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2f61178a935326de9fc4d0d6d698956284148b1fb5a62e5b1d170e1e52c522b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700346
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f61178a935326de9fc4d0d6d698956284148b1fb5a62e5b1d170e1e52c522b8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA506700346.
  date published: 2026-07-08T03:22:41Z
audio: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 1. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.226
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.722
  additional property: Energy
    type: PropertyValue
    value: 0.354
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.769
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.906
  additional property: Liveness
    type: PropertyValue
    value: 0.554
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.911
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.767
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 2. Adagio
type: MusicRecording
duration: PT3M16S
duration ms: 196000
explicit: false
by artist: Tomaso Albinoni
by artist: Heinz Holliger
by artist: Maurice Bourgue
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700347
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T03:25:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7101ec6c6d551e6c0779411da77a8839f3e02581f5d3463102e05610b5bb5bfd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700347
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7101ec6c6d551e6c0779411da77a8839f3e02581f5d3463102e05610b5bb5bfd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA506700347.
  date published: 2026-07-02T03:55:08Z
audio: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 2. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 116.391
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.132
  additional property: Energy
    type: PropertyValue
    value: 0.147
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.834
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.922
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.065
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.086
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 3. Allegro
type: MusicRecording
duration: PT3M10S
duration ms: 190000
explicit: false
by artist: Tomaso Albinoni
by artist: Heinz Holliger
by artist: Maurice Bourgue
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700348
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:41:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc31f568d62cbb2cabd070a2f44bb27ee669738bb51c39a27c7f719798045ec90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700348
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31f568d62cbb2cabd070a2f44bb27ee669738bb51c39a27c7f719798045ec90. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA506700348.
  date published: 2026-07-08T03:53:27Z
audio: Concerto a 5 in G, Op. 9, No. 6 for 2 Oboes, Strings, and Continuo - Rev. Giegling: 3. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.732
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.454
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.875
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.883
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.608
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Concerto a 5 in D, Op. 9, No. 7 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
type: MusicRecording
duration: PT3M4S
duration ms: 184000
explicit: false
by artist: Tomaso Albinoni
by artist: Felix Ayo
by artist: I Musici
by artist: Maria Teresa Garatti
in album: Albinoni: 6 Concerti from Op. 9
  type: MusicAlbum
  date published: 1968-01-01
genre: classical
isrc code: NLA506700351
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0379945511427b6a54654c971cd4a557a1faf537501011fb0d8c89f42527da65
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA506700351
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0379945511427b6a54654c971cd4a557a1faf537501011fb0d8c89f42527da65. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLA506700351.
  date published: 2026-07-08T03:22:41Z
audio: Concerto a 5 in D, Op. 9, No. 7 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.871
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.646
  additional property: Energy
    type: PropertyValue
    value: 0.291
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.844
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.035
  additional property: Liveness
    type: PropertyValue
    value: 0.215
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.842
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.568
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Concerto a 5 in F, Op. 9, No. 10 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in D, Op. 9, No. 12 for 2 Oboes, Strings,and Continuo - Rev. Giegling: 3. Allegro
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Handel: Concerto grosso, Op. 6 No. 4 - Bach: Concerto pour piano No. 5 - Haydn: Concerto pour violon, Hob. VIIa:1 (Stereo Version)
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Vivaldi Edition Vol.2 - Op.7-12
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track: Concerto for Violin and Strings in G , Op. 7/8 , RV 299: 1. Allegro assai
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track: Concerto for Violin and Strings in G minor , Op. 7/3 , RV 326: 1. Allegro
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track: Concerto for Violin and Strings in G minor , Op. 7/3 , RV 326: 3. Presto
track: Concerto for Violin and Strings in A minor , Op. 7/4 , RV 354: 1. Allegro
track: Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto

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OpenTimestamps Proof of Existence
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Concerto for Violin and Strings in G , Op. 7/8 , RV 299: 2. Largo, cantabile
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Concerto for Violin and Strings in G minor , Op. 7/3 , RV 326: 3. Presto
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Concerto for Violin and Strings in A minor , Op. 7/4 , RV 354: 1. Allegro
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Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
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  audio: Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 3. Corrente: Vivace
track: Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 4. Gavotta: Allegro
track: Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 5. Adagio
track: Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 6. Minuetto: Vivace
track: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 9 in B flat major: 1. Allegro
track: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 9 in B flat major: 2. Largo e spiccato
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track: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 1. Allegro molto
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track: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 1. Allegro
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track: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 1 Largo - Allegro
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track: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 4. Largo
track: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 5. Allegro
track: Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 1. Vivace - Allegro - Adagio - Vivace - Allegro - Largo andante
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track: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 1. Preludio (Andante largo)
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track: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 6. Minuetto (Vivace)
track: Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
track: Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
track: Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
track: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
track: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
track: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
track: Violin Concerto in E major, RV 271 "L'amoroso": 1. Allegro
track: Violin Concerto in E major, RV 271 "L'amoroso": 2. Cantabile
track: Violin Concerto in E major, RV 271 "L'amoroso": 3. Allegro
track: Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": I. Allegro
track: Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": II. Largo
track: Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": III. Allegro (Danza pastorale)
track: Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": I. Allegro non molto - Allegro
track: Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
track: Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro (Ballo, e canto de' villanelli)
track: Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
track: Concerto for Violin and Strings in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo

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Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 3. Corrente: Vivace
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Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 5. Adagio
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Concerto grosso in F, Op. 6, No. 9 - Rev. Vittorio Negri (1923 - ): 6. Minuetto: Vivace
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additional property: OTSBitcoinBlockVerifyURL
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c48bba61b60e559a0a96522b8ba1be31aad3c82f80fa4b10b06d5194324b4c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA506400367.
  date published: 2026-07-02T03:55:08Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 9 in B flat major: 3. Allegro
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 1. Allegro molto
type: MusicRecording
duration: PT3M55S
duration ms: 235000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
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  date published: 2025-06-12
isrc code: NLA506400368
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815debe98b04f0c997be52ca8e9efa0843f14691dd13f71105ba3569f045fd8a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLA506400368.
  date published: 2026-07-02T03:55:08Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 1. Allegro molto
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  additional property: Valence (Positivity)
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 2. Largo cantabile
type: MusicRecording
duration: PT2M53S
duration ms: 173000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
  type: MusicAlbum
  date published: 2025-06-12
isrc code: NLA506400369
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f8738170cca4c328b2a864121ee2671a3415619f7f69cb01fdf8ec41969b3c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA506400369.
  date published: 2026-07-02T05:09:12Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 2. Largo cantabile
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  additional property: Valence (Positivity)
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 3. Allegro
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duration: PT3M12S
duration ms: 192000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
  type: MusicAlbum
  date published: 2025-06-12
isrc code: NLA506400370
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac499ca40a5635de9fb1c93fa5b22b8a8f67b9923e36aee5acfec86253d82a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA506400370.
  date published: 2026-07-02T05:09:12Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 10 in G major, RV300: 3. Allegro
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Valence (Positivity)
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 1. Allegro
type: MusicRecording
duration: PT4M7S
duration ms: 247989
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
  type: MusicAlbum
  date published: 2025-06-12
isrc code: NLA506400371
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564fffe96fd65ec04cd5216c5de558a7e0dd9170c29c4bca328b74667d463369. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA506400371.
  date published: 2026-07-02T05:09:12Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 1. Allegro
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 2. Adagio
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duration: PT3M5S
duration ms: 185000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
  type: MusicAlbum
  date published: 2025-06-12
isrc code: NLA506400372
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935d807b9c8e8bad6c68612f75b75c73ff7ef23fd4f207c7c0ce164a38505e9b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA506400372.
  date published: 2026-07-02T05:09:12Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 2. Adagio
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 3. Allegro
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duration: PT3M27S
duration ms: 207000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: I Musici
in album: "Ayo - El Violín Barroco"
  type: MusicAlbum
  date published: 2025-06-12
isrc code: NLA506400373
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d196780b19d90b538b03ada8d6398b727186a8a9e6f5079b9bc2778bba1e8b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLA506400373.
  date published: 2026-07-02T05:09:12Z
audio: 12 Violin Concertos, Op. 9 - "La cetra" / Concerto No. 11 in C minor, RV198a: 3. Allegro
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 1 Largo - Allegro
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by artist: Maria Teresa Garatti
by artist: Guy Bovet
by artist: I Musici
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 1 Largo - Allegro
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Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 2. Largo - Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 2. Largo - Allegro
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Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 3. Largo
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by artist: Maria Teresa Garatti
by artist: Guy Bovet
by artist: I Musici
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 3. Largo
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Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 4. Largo
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by artist: Guy Bovet
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 4. Largo
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Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 5. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto grosso in D, Op. 6, No. 1 - Rev. Vittorio Negri (1923- ): 5. Allegro
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Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 1. Vivace - Allegro - Adagio - Vivace - Allegro - Largo andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 1. Vivace - Allegro - Adagio - Vivace - Allegro - Largo andante
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Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 2. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 2. Allegro
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Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 3. Grave - Andante largo
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by artist: Arcangelo Corelli
by artist: Felix Ayo
by artist: Arnaldo Apostoli
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: Guy Bovet
by artist: I Musici
in album: "Ayo - El Violín Barroco"
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  date published: 2025-06-12
genre: classical
genre: early-music
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 3. Grave - Andante largo
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Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 4. Allegro
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by artist: Arcangelo Corelli
by artist: Felix Ayo
by artist: Arnaldo Apostoli
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: Guy Bovet
by artist: I Musici
in album: "Ayo - El Violín Barroco"
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  date published: 2025-06-12
genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Concerto grosso in F, Op. 6, No. 2 - Rev. Vittorio Negri (1923- ): 4. Allegro
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 1. Preludio (Andante largo)
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explicit: false
by artist: Arcangelo Corelli
by artist: Felix Ayo
by artist: Arnaldo Apostoli
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: Marijke Smit Sibinga
by artist: I Musici
in album: "Ayo - El Violín Barroco"
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genre: classical
genre: early-music
genre: baroque
genre: italian-baroque
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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: 2026-07-02T03:55:08Z
audio: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 1. Preludio (Andante largo)
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 3. Adagio
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by artist: Arcangelo Corelli
by artist: Felix Ayo
by artist: Arnaldo Apostoli
by artist: Enzo Altobelli
by artist: Maria Teresa Garatti
by artist: Marijke Smit Sibinga
by artist: I Musici
in album: "Ayo - El Violín Barroco"
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genre: classical
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genre: baroque
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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: 2026-07-02T11:34:59Z
audio: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 3. Adagio
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Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 4. Corrente (Vivace)
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by artist: Marijke Smit Sibinga
by artist: I Musici
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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: 2026-07-02T11:34:59Z
audio: Concerto grosso in C, Op. 6, No. 10 - Rev. by Vittorio Negri (1923 - ): 4. Corrente (Vivace)
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Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
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Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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by artist: Felix Ayo
by artist: I Musici
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T05:09:12Z
audio: Concerto a 5 in B flat, Op. 9, No. 1 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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by artist: I Musici
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 1. Allegro
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 2. Adagio
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Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Concerto a 5 in A ,Op. 9, No. 4 for Violin, Strings, and Continuo - Rev. Giegling: 3. Allegro
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Violin Concerto in E major, RV 271 "L'amoroso": 1. Allegro
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Violin Concerto in E major, RV 271 "L'amoroso": 1. Allegro
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Violin Concerto in E major, RV 271 "L'amoroso": 2. Cantabile
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Violin Concerto in E major, RV 271 "L'amoroso": 2. Cantabile
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Violin Concerto in E major, RV 271 "L'amoroso": 3. Allegro
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subject of: OpenTimestamps Proof of Existence
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Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": I. Allegro
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subject of: OpenTimestamps Proof of Existence
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Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": II. Largo
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  date published: 2026-07-06T07:53:57Z
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Violin Concerto in E Major, Op. 8, No. 1, RV 269 "La primavera": III. Allegro (Danza pastorale)
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  date published: 2026-07-07T14:04:01Z
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": I. Allegro non molto - Allegro
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  date published: 2026-07-06T07:53:57Z
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
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Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro (Ballo, e canto de' villanelli)
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  date published: 2026-07-07T15:12:44Z
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Masterpieces Presents Antonio Vivaldi: The Four Seasons
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Britten: Spring Symphony; Four Sea Interludes; Simple Symphony
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Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
type: MusicRecording
duration: PT2M56S
duration ms: 176000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
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  date published: 1986-04-01
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900177
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b03710bcf94bf354c716b9ffb7e7501d2288d2a97c69e6ecc8c5a35fac3ef48. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLA505900177.
  date published: 2026-06-13T15:41:10Z
audio: Violin Concerto in G Minor, Op. 8, No. 2, RV 315 "L'estate": III. Presto. Tempo impetuoso d'estate
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Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro (Ballo, e canto de' villanelli)
type: MusicRecording
duration: PT5M59S
duration ms: 359493
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
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additional property: CopyrightID
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900178
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T11:38:34Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625a795aabdd69e5f7864f4bd79131c62b0038deefb3fb731d3479d68f5ae7b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLA505900178.
  date published: 2026-07-02T11:38:34Z
audio: Concerto for Violin and Strings in F major, Op. 8, No. 3, RV 293 "L'autunno": 1. Allegro (Ballo, e canto de' villanelli)
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Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
type: MusicRecording
duration: PT3M23S
duration ms: 203000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
  type: MusicAlbum
  date published: 1986-04-01
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505900181
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf21d9f7baebeb7bfc6568a9da9c1129e431753c18ce31ea5ce67bdef08923a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLA505900181.
  date published: 2026-07-02T03:30:09Z
audio: Concerto for Violin and Strings in F minor, Op. 8, No. 4, RV 297 "L'inverno": 1. Allegro non molto
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Concerto for Violin and Strings in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo
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duration: PT2M40S
duration ms: 160000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7acfc7ab8d903aedcb94f0b019c2bc242cb25d7ecf4d704ce548d1ce769cb83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLA505900182.
  date published: 2026-06-13T15:41:10Z
audio: Concerto for Violin and Strings in F Minor, Op. 8, No. 4, RV 297 "L'inverno": 2. Largo
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Violin Concerto in E major, RV 271 "L'amoroso": 1. Allegro
type: MusicRecording
duration: PT5M29S
duration ms: 329000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
  type: MusicAlbum
  date published: 1986-04-01
isrc code: NLA505700161
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA505700161
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c86ba1d0fb78326c600758f63a2fcfda6474c17b9f8cc9a8ee0c505e08b5efe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLA505700161.
  date published: 2026-07-08T03:20:19Z
audio: Violin Concerto in E major, RV 271 "L'amoroso": 1. Allegro
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Violin Concerto in E major, RV 271 "L'amoroso": 2. Cantabile
type: MusicRecording
duration: PT3M55S
duration ms: 235000
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
  type: MusicAlbum
  date published: 1986-04-01
isrc code: NLA505700162
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cf73a3ce45273707e7896f1a467c6b59dc77ff46150656865b4fcecc982272. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA505700162.
  date published: 2026-07-08T03:53:27Z
audio: Violin Concerto in E major, RV 271 "L'amoroso": 2. Cantabile
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
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Violin Concerto in E major, RV 271 "L'amoroso": 3. Allegro
type: MusicRecording
duration: PT4M11S
duration ms: 251280
explicit: false
by artist: Antonio Vivaldi
by artist: Felix Ayo
by artist: I Musici
in album: Vivaldi: The Four Seasons; L'amoroso
  type: MusicAlbum
  date published: 1986-04-01
isrc code: NLA505700163
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Violin Concerto in E major, RV 271 "L'amoroso": 3. Allegro
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Bach, J.S.: Sonatas & Partitas for Solo Violin
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Schubert: Rondo, D. 438 & Minuets and Trios, D. 89 - Mendelssohn: Symphony No. 9 (Stereo Version)
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Schubert: Rondo for Violin and Strings, D. 438 & Five Minuets With Six Trios, D. 89 - Mendelssohn: String Symphony No. 9, MWV N9 (Mono Version)
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Vivaldi: Les quatre saisons, Op. 8 (Stereo Version)
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date published: 1960-01-01

Bach: Concertos pour violons, BWV 1041 - 1043 (Mono Version)
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Vivaldi: Il cimento dell'armonia e dell'inventione, Op. 8, Concerti Nos. 9 - 12 (Mono Version)
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Vivaldi: Il cimento dell'armonia e dell'inventione, Concerti Nos. 5, 6, 7 & 8 (Mono Version)
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