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album: Joyful Bach
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      date published: 2026-06-13T12:47:07Z
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      date published: 2026-06-13T13:32:09Z
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  track: Violin Concerto in D Minor, BWV 1052: I. Allegro
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  track: Violin Concerto in G Minor, BWV 1056: I. Allegro
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  track: Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: I. Allegro
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  track: Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: III. Allegro (2)
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album: J.S. Bach: Die Kunst Der Fuge, Bwv 1080
album: Baroque Opera Arias by Purcell, Handel and Gluck
album: Baroque Violin Concertos
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track: Violin Concerto in D Minor, BWV 1052: I. — (Reconstructed from the Harpsichord Concerto, BWV 1052)
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track: Concerto in D Minor for Two Violins, BWV 1043: II. Largo ma non tanto
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track: Concerto for Two Violins and Orchestra in E Major, BWV 1043: I. Vivace
track: Concerto for Two Violins and Orchestra in E Major, BWV 1043: II. Largo ma non tanto
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subject of: OpenTimestamps Proof of Existence
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Violin Concerto in E Major, BWV 1042: III. Allegro assai
type: MusicRecording
duration: PT2M55S
duration ms: 175026
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 11
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805987
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
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additional property: OTSVerifyInstructions
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in E Major, BWV 1042: III. Allegro assai
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Violin Concerto in D Minor, BWV 1052: I. Allegro
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duration: PT7M38S
duration ms: 458400
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 12
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805988
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
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4c815fbf7d794fa03e3ba9b15f80b93547aeaf7bfa655ff4e569708176e7e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331805988 — a six-check JSON result.
  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in D Minor, BWV 1052: I. Allegro
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Violin Concerto in D Minor, BWV 1052: II. Largo
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duration: PT7M2S
duration ms: 422000
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 9
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805989
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto in D Minor, BWV 1052: II. Largo
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Violin Concerto in D Minor, BWV 1052: III. Presto
type: MusicRecording
duration: PT7M52S
duration ms: 472133
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 9
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805990
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
  type: PropertyValue
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f7e4f25056ff14a7f08e33b27ee5eafca314e159969edffd7eb5abba8e34b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331805990 — a six-check JSON result.
  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in D Minor, BWV 1052: III. Presto
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Violin Concerto in G Minor, BWV 1056: I. Allegro
type: MusicRecording
duration: PT3M22S
duration ms: 202933
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 10
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805991
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
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd459df2366a683018a08dc94a21284533c99c8b0785186b0ff5932306cf0c8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331805991 — a six-check JSON result.
  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in G Minor, BWV 1056: I. Allegro
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  additional property: Acousticness
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Violin Concerto in G Minor, BWV 1056: II. Andante
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duration: PT3M14S
duration ms: 194893
explicit: false
by artist: Johann Sebastian Bach
by artist: Camerata Antonio Luco
by artist: Emmy Verhey
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 9
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805992
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
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd665e06222cb44e800c48d8e0bba7cc61fd6ef3fcf089899d5ebb1ffe7620300. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331805992 — a six-check JSON result.
  date published: 2026-07-02T03:30:09Z
audio: Violin Concerto in G Minor, BWV 1056: II. Andante
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Violin Concerto in G Minor, BWV 1056: III. Allegro assai
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duration: PT3M38S
duration ms: 218013
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by artist: Camerata Antonio Luco
by artist: Emmy Verhey
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  date published: 2006-04-01
popularity: 9
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331805993
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575af73981b3a99b789a2377885a2a7bb8b86dea5d144afc380f0e1760b66504. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331805993 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Violin Concerto in G Minor, BWV 1056: III. Allegro assai
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Acousticness
    type: PropertyValue
    value: 0.74
  additional property: Instrumentalness
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    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
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    value: 0.482
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.436
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
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    value: Minor

Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: I. Allegro
type: MusicRecording
duration: PT5M52S
duration ms: 352933
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Rainer Kussmaul
by artist: Henk Rubingh
by artist: Thomas Hengelbrock
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 13
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY330605730
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:31:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x593a59e67d350867617e969290a8d7f064325f1dacf38041d84a583ec7769f1b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
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/NLY330605730
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593a59e67d350867617e969290a8d7f064325f1dacf38041d84a583ec7769f1b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330605730 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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    value: 1
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    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.56
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    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.008
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.878
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.12
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
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Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: II. Adagio
type: MusicRecording
duration: PT5M11S
duration ms: 311826
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Rainer Kussmaul
by artist: Henk Rubingh
by artist: Thomas Hengelbrock
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 7
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY330605731
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T06:41:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ab5ceb70792c79e1cfc613eaac46194bd8be502d641363cbfd4b4670e768527
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330605731
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab5ceb70792c79e1cfc613eaac46194bd8be502d641363cbfd4b4670e768527. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330605731 — a six-check JSON result.
  date published: 2026-07-02T05:09:12Z
audio: Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: II. Adagio
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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    value: 11
  additional property: Mode (Major/Minor)
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    value: 0
  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
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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
    type: PropertyValue
    value: 0.426
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.249
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.017
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: III. Allegro (2)
type: MusicRecording
duration: PT4M14S
duration ms: 254733
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Rainer Kussmaul
by artist: Henk Rubingh
by artist: Thomas Hengelbrock
in album: J.S. Bach: The Violin Concertos
  type: MusicAlbum
  date published: 2006-04-01
popularity: 8
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY330605732
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T10:04:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99477f9c32dae439554910eeae81a3cff927d315713ae92aea5b0898227c945c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
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/NLY330605732
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99477f9c32dae439554910eeae81a3cff927d315713ae92aea5b0898227c945c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY330605732 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Concerto for 3 Violins, Strings & B.C. In D Major, BWV 1064: III. Allegro (2)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.403
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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    value: 0.345
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.792
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: B
  additional property: Mode Name
    type: PropertyValue
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Bach: Violin Concertos BWV 1041, 1042, 1052, 1056
type: MusicAlbum
date published: 1994

J.S. Bach: Die Kunst Der Fuge, Bwv 1080
type: MusicAlbum
date published: 1989-09-08

Baroque Opera Arias by Purcell, Handel and Gluck
type: MusicAlbum
date published: 1988-01-01

Baroque Violin Concertos
type: MusicAlbum
date published: 2023-09-15

Violin Concerto in E Major, BWV 1042: I. Allegro
type: MusicRecording
duration: PT7M10S
duration ms: 430693
explicit: false
by artist: Johann Sebastian Bach
by artist: Thomas Zehetmair
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
in album: Top 50 Bach
  type: MusicAlbum
  date published: 2014-05-17
popularity: 31
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331406819
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T11:23:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x382246a1ebb1747ef06b8c95a830aeef8d65d5ff6718c249871b80ed037b0883
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331406819
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382246a1ebb1747ef06b8c95a830aeef8d65d5ff6718c249871b80ed037b0883. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331406819 — a six-check JSON result.
  date published: 2026-06-13T12:47:07Z
audio: Violin Concerto in E Major, BWV 1042: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.528
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.568
  additional property: Energy
    type: PropertyValue
    value: 0.266
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.943
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.501
  additional property: Liveness
    type: PropertyValue
    value: 0.163
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.728
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.764
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Violin Concerto in D Minor, BWV 1052: I. — (Reconstructed from the Harpsichord Concerto, BWV 1052)
type: MusicRecording
duration: PT7M26S
duration ms: 446000
explicit: false
by artist: Johann Sebastian Bach
by artist: Thomas Zehetmair
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
in album: Top 50 Bach
  type: MusicAlbum
  date published: 2014-05-17
popularity: 29
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331406825
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T17:57:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x88e099e9c05e6dca495ccd9f5333e6d757474eacaeed016a33809aaa573b97ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331406825
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e099e9c05e6dca495ccd9f5333e6d757474eacaeed016a33809aaa573b97ed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331406825 — a six-check JSON result.
  date published: 2026-06-13T12:53:06Z
audio: Violin Concerto in D Minor, BWV 1052: I. — (Reconstructed from the Harpsichord Concerto, BWV 1052)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.951
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.517
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.733
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.469
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Violin Concerto in A Minor, BWV 1041: II. Andante
type: MusicRecording
duration: PT6M18S
duration ms: 378106
explicit: false
by artist: Johann Sebastian Bach
by artist: Thomas Zehetmair
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
in album: Top 50 Bach
  type: MusicAlbum
  date published: 2014-05-17
popularity: 22
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331406823
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:04:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7c83e4873d2595d51d214ee360431937cec942a97bab41f010c9ac886572910
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331406823
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T13:32:09Z
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Concerto in D Minor for Two Violins, BWV 1043: II. Largo ma non tanto
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duration ms: 430973
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by artist: Thomas Zehetmair
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
in album: Top 50 Bach
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popularity: 22
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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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: 2026-06-13T15:41:10Z
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Violin Concerto in E Major, BWV 1042: I. Allegro
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duration: PT7M10S
duration ms: 430693
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by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 6
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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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: 2026-07-07T18:39:05Z
audio: Violin Concerto in E Major, BWV 1042: I. Allegro
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Violin Concerto in E Major, BWV 1042: III. Allegro assai
type: MusicRecording
duration: PT2M47S
duration ms: 167440
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 5
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T14:28:24Z
audio: Violin Concerto in E Major, BWV 1042: III. Allegro assai
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Violin Concerto in A Minor, BWV 1041: I. —
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duration: PT3M58S
duration ms: 238093
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 5
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603744
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T23:42:34Z
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Violin Concerto in D Minor, BWV 1052: I. —
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duration: PT7M26S
duration ms: 446000
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by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
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  date published: 2016-05-06
popularity: 5
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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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: 2026-07-29T21:09:47Z
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Violin Concerto in E Major, BWV 1042: II. Adagio
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by artist: Amsterdam Bach Soloists
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by artist: Gewandhausorchester
by artist: Kurt Masur
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  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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isrc code: NLY331603742
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T18:50:38Z
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Violin Concerto in A Minor, BWV 1041: II. Andante
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by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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duration: PT3M31S
duration ms: 211226
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by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603746
additional property: CopyrightID
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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
  type: DigitalDocument
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  date published: 2026-07-07T15:12:44Z
audio: Violin Concerto in A Minor, BWV 1041: III. Allegro assai
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Violin Concerto in D Minor, BWV 1052: II. Adagio
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duration: PT6M43S
duration ms: 403506
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603748
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto in D Minor, BWV 1052: II. Adagio
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Violin Concerto in G Minor, BWV 1056: I. —
type: MusicRecording
duration: PT3M26S
duration ms: 206000
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
  type: MusicAlbum
  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603750
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: 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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-29T23:52:38Z
audio: Violin Concerto in G Minor, BWV 1056: I. —
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Violin Concerto in G Minor, BWV 1056: III. Presto
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duration: PT3M12S
duration ms: 192186
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
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  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
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isrc code: NLY331603752
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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: 2026-07-07T18:39:05Z
audio: Violin Concerto in G Minor, BWV 1056: III. Presto
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Concerto for Two Violins and Orchestra in E Major, BWV 1043: I. Vivace
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duration ms: 249826
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by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
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  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603753
additional property: CopyrightID
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e3b703515c12bf78e7fe8b06f6b7576fcf5eacde4d313f12e40dd865c3ce2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331603753 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: Concerto for Two Violins and Orchestra in E Major, BWV 1043: I. Vivace
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Concerto for Two Violins and Orchestra in E Major, BWV 1043: II. Largo ma non tanto
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by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
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  date published: 2016-05-06
popularity: 4
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: NLY331603754
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additional property: OTSVerificationAPI
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  date published: 2026-07-30T08:30:10Z
audio: Concerto for Two Violins and Orchestra in E Major, BWV 1043: II. Largo ma non tanto
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Violin Concerto in D Minor, BWV 1052: III. Allegro
type: MusicRecording
duration: PT7M41S
duration ms: 461960
explicit: false
by artist: Johann Sebastian Bach
by artist: Amsterdam Bach Soloists
by artist: Henk Rubingh
by artist: Gewandhausorchester
by artist: Kurt Masur
in album: J.S. Bach: Complete Concertos
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  date published: 2016-05-06
popularity: 3
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
audio: Violin Concerto in D Minor, BWV 1052: III. Allegro
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