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  track: Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
  track: Concerto for 2 Violins in D Minor, BWV 1043: III. Allegro
  track: Violin Concerto in A Minor, BWV 1041: I. Allegro
  track: Violin Concerto in A Minor, BWV 1041: II. Andante
  track: Violin Concerto in A Minor, BWV 1041: III. Allegro assai
  track: Violin Concerto in E Major, BWV 1042: I. Allegro
  track: Violin Concerto in E Major, BWV 1042: II. Adagio
  track: Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): I. Allegro
  track: Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): III. Allegro
  track: Violin Concerto in E Major, BWV 1042: III. Allegro
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album: Vivaldi: Six Concertos from L'Estro Armonico, Op. 3
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  track: Concerto No. 8 for 2 Violins in A Minor, RV 522: III. Allegro
  track: Concerto No. 10 for 4 Violins and Cello in B Minor, RV 580: I. Allegro

Concerto for 2 Violins in D Minor, BWV 1043: I. Vivace
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Concerto for 2 Violins in D Minor, BWV 1043: II. Largo ma non tanto
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Concerto for 2 Violins in D Minor, BWV 1043: III. Allegro
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Violin Concerto in A Minor, BWV 1041: I. Allegro
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Violin Concerto in A Minor, BWV 1041: II. Andante
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Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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genre: classical
genre: classical-piano
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audio: Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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Violin Concerto in E Major, BWV 1042: I. Allegro
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duration: PT7M46S
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by artist: Elizabeth Blumenstock
by artist: Arcangeli Baroque Strings
by artist: Michael Sand
in album: Bach, J.S.: Concertos for 1, 2, and 3 Violins
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genre: classical
genre: classical-piano
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additional property: OTSVerifyInstructions
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  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto in E Major, BWV 1042: I. Allegro
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Violin Concerto in E Major, BWV 1042: II. Adagio
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duration: PT6M2S
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by artist: Elizabeth Blumenstock
by artist: Arcangeli Baroque Strings
by artist: Michael Sand
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genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Violin Concerto in E Major, BWV 1042: II. Adagio
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Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): I. Allegro
type: MusicRecording
duration: PT6M18S
duration ms: 378893
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by artist: Johann Sebastian Bach
by artist: Michael Sand
by artist: Lisa Weiss
by artist: Lisa Grodin
by artist: Arcangeli Baroque Strings
in album: Bach, J.S.: Concertos for 1, 2, and 3 Violins
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genre: classical
genre: classical-piano
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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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  date published: 2026-07-08T03:53:27Z
audio: Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): I. Allegro
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Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): III. Allegro
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duration: PT4M19S
duration ms: 259933
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by artist: Michael Sand
by artist: Lisa Weiss
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by artist: Arcangeli Baroque Strings
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genre: classical
genre: classical-piano
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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: 2026-07-08T03:53:27Z
audio: Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): III. Allegro
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Violin Concerto in E Major, BWV 1042: III. Allegro
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duration: PT2M54S
duration ms: 174106
explicit: false
by artist: Johann Sebastian Bach
by artist: Elizabeth Blumenstock
by artist: Arcangeli Baroque Strings
by artist: Michael Sand
in album: Bach, J.S.: Concertos for 1, 2, and 3 Violins
  type: MusicAlbum
  date published: 2011-04-01
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T05:56:21Z
audio: Violin Concerto in E Major, BWV 1042: III. Allegro
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): II. Adagio
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duration: PT5M42S
duration ms: 342306
explicit: false
by artist: Johann Sebastian Bach
by artist: Michael Sand
by artist: Lisa Weiss
by artist: Lisa Grodin
by artist: Arcangeli Baroque Strings
in album: Bach, J.S.: Concertos for 1, 2, and 3 Violins
  type: MusicAlbum
  date published: 2011-04-01
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
audio: Concerto in C Major, BWV 1064 (arr. for 3 violins and orchestra): II. Adagio
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  additional property: Energy
    type: PropertyValue
    value: 0.072
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.138
  additional property: Liveness
    type: PropertyValue
    value: 0.149
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.081
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.961
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: USB8U1025264
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960203
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T03:35:13+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1025264
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960203
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960203
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T03:35:13+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Concerto No. 8 for 2 Violins in A Minor, RV 522: III. Allegro
type: MusicRecording
duration: PT3M30S
duration ms: 210493
explicit: false
by artist: Antonio Vivaldi
by artist: Arcangeli Baroque Strings
in album: Vivaldi: Six Concertos from L'Estro Armonico, Op. 3
  type: MusicAlbum
  date published: 1991
isrc code: GBABV0610595
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T07:39:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81352d477e66c3cec61348a15c8a16f246b823da02b6c2258b04378c80212c3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957032
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957032
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBABV0610595
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T11:43:09Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957032
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T11:43:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81352d477e66c3cec61348a15c8a16f246b823da02b6c2258b04378c80212c3a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBABV0610595.
  date published: 2026-07-07T11:43:09Z
audio: Concerto No. 8 for 2 Violins in A Minor, RV 522: III. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.741
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.43
  additional property: Energy
    type: PropertyValue
    value: 0.201
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.875
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.027
  additional property: Liveness
    type: PropertyValue
    value: 0.193
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.408
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.581
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto No. 10 for 4 Violins and Cello in B Minor, RV 580: I. Allegro
type: MusicRecording
duration: PT3M43S
duration ms: 223640
explicit: false
by artist: Antonio Vivaldi
by artist: Arcangeli Baroque Strings
in album: Vivaldi: Six Concertos from L'Estro Armonico, Op. 3
  type: MusicAlbum
  date published: 1991
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a42a67efce2bab754559235a6412a6e28abedcae55795e9dd290459dd92a9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBABV0610607.
  date published: 2026-08-01T03:13:03Z
audio: Concerto No. 10 for 4 Violins and Cello in B Minor, RV 580: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 127.359
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.557
  additional property: Energy
    type: PropertyValue
    value: 0.339
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.824
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.584
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.188
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: GBABV0610607
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960500
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-08-01T03:13:03+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBABV0610607
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960500
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:13:03+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch