Bläservereinigung der Wiener Philharmoniker
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subject of: OpenTimestamps Proof of Existence
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album: Wir entdecken Komponisten: Wolfgang Amadeus Mozart – Das Wunderkind
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  date published: 1982-01-01
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    by artist: The Cambridge Buskers
    by artist: Michael Copley
    by artist: Dag Ingram
    by artist: London Symphony Orchestra
    by artist: Claudio Abbado
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-22T16:40:19Z
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  track: 2. Der Popstar
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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: 2026-07-06T02:10:22Z
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  track: 3. Geburt und Kindheit
  track: 7. Der junge Tänzer
  track: 8. Der Weg zum Star
  track: 9. Reisen, Reisen, Reisen
  track: 13. Ruhm hat seinen Preis
  track: 14. Rückkehr nach Salzburg
album: Mozart: Serenades Nos. 10 & 12
album: Mozart: Serenades No. 10 K361 & No. 12 K388
album: Mozart: Wind Concertos and Serenades
album: Beethoven: La musique de chambre I - La discothèque idéale de Diapason, Vol. 26
album: Alla marcia - Chamber Music
album: Quartet: Music by Mozart
album: Bravo! - Great Classical Recordings: Mozart
album: A Classical December: Mozart
album: 'December' - A Season of Classics: Mozart
album: An Era of Classical: Mozart
album: Eine kleine Nachtmusik
album: Mozart: Serenade K.250 "Haffner" - Divertimento K.186
album: Mozart / Beethoven: Quintette
album: "An Era of Classical": Mozart - Orchestral Works
album: A Classical Journey with Mozart
album: 2025 - A New Year Celebration with Mozart
album: A Sketchbook of Mozart
album: 18th Century Orchestra: Mozart
album: A Winter Postcard: Mozart
album: "Classical Winter" - Mozart
album: '12 German Dances' and other works - Mozart
album: "18th Century Composers" - Mozart & Beethoven
album: "Aria" - Springtime Classics

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Valence (Positivity)
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3. Geburt und Kindheit
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by artist: Leopold Mozart
by artist: Wolfgang Amadeus Mozart
by artist: Will Quadflieg
by artist: Bach-Orchester Berlin
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by artist: Karl Steins
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by artist: Gerd Seifert
by artist: Günter Piesk
by artist: Berliner Philharmoniker
by artist: Karl Böhm
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T11:35:32Z
audio: 3. Geburt und Kindheit
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7. Der junge Tänzer
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by artist: Dietrich Fischer-Dieskau
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:04:01Z
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8. Der Weg zum Star
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:53:57Z
audio: 8. Der Weg zum Star
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9. Reisen, Reisen, Reisen
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audio: 9. Reisen, Reisen, Reisen
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13. Ruhm hat seinen Preis
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14. Rückkehr nach Salzburg
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Mozart: Serenades Nos. 10 & 12
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Mozart: Wind Concertos and Serenades
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track: Clarinet Concerto in A Major, K. 622: II. Adagio
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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: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Sinfonia concertante in E-Flat Major, K. 297b: III. Andantino con variazione
type: MusicRecording
duration: PT9M3S
duration ms: 543080
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Walter Lehmayer
by artist: Peter Schmidl
by artist: Günter Högner
by artist: Fritz Faltl
by artist: Wiener Philharmoniker
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
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  date published: 2006-01-01
genre: classical
genre: classical-era
isrc code: DEF057501201
additional property: CopyrightID
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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/DEF057501201
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0x0efeb0e5020ac136d51f3349408d59efa82e2a8089677ce715ae79b3fc03f8f6. 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/DEF057501201.
  date published: 2026-07-08T03:20:19Z
audio: Sinfonia concertante in E-Flat Major, K. 297b: III. Andantino con variazione
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Flute Concerto in G Major, K. 313: II. Adagio non troppo
type: MusicRecording
duration: PT9M43S
duration ms: 583000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Anton Gisler
by artist: Werner Tripp
by artist: Wiener Philharmoniker
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
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  date published: 2006-01-01
genre: classical
genre: classical-era
isrc code: DEF057300642
additional property: CopyrightID
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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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057300642
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0x19b26d508c7a37d55b1d7b89753fc771c76979c8aabb58ed7063a1ece69fe578. 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/DEF057300642.
  date published: 2026-07-08T03:20:19Z
audio: Flute Concerto in G Major, K. 313: II. Adagio non troppo
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Horn Concerto No. 3 in E-Flat Major, K. 447: I. Allegro
type: MusicRecording
duration: PT6M56S
duration ms: 416080
explicit: false
by artist: Günter Högner
by artist: Wolfgang Amadeus Mozart
by artist: Wiener Philharmoniker
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
  type: MusicAlbum
  date published: 2006-01-01
isrc code: DEF057802141
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057802141
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4034a79a399cf945be4c59d0020a3565d0a62b177ce4ff44edc8b1301cf7e17. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF057802141.
  date published: 2026-07-08T08:56:20Z
audio: Horn Concerto No. 3 in E-Flat Major, K. 447: I. Allegro
  type: AudioObject
  additional property: Tempo (BPM)
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Serenade in B-Flat Major, K. 361 "Gran partita": III. Adagio
type: MusicRecording
duration: PT5M52S
duration ms: 352626
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Berlin Philharmonic Wind Ensemble
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
  type: MusicAlbum
  date published: 2006-01-01
genre: classical
genre: classical-era
isrc code: DEF057002935
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057002935
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 0x16002bc6d6e03661f6220d1f92b1039dda232d4b6adff08cc5d18d2c15f0881e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF057002935.
  date published: 2026-07-08T08:56:20Z
audio: Serenade in B-Flat Major, K. 361 "Gran partita": III. Adagio
  type: AudioObject
  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
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio (Cadenza: Zeman)
type: MusicRecording
duration: PT7M39S
duration ms: 459000
explicit: false
by artist: Dietmar Zeman
by artist: Wolfgang Amadeus Mozart
by artist: Wiener Philharmoniker
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
  type: MusicAlbum
  date published: 2006-01-01
genre: classical-bassoon
isrc code: DEF057300841
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057300841
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x34947389ef31f4e2418e73c5ef23a862137dd0d1865e020dfba14fe9b7d822b2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF057300841.
  date published: 2026-07-08T08:56:20Z
audio: Bassoon Concerto in B-Flat Major, K. 191: II. Andante ma adagio (Cadenza: Zeman)
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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
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  additional property: Danceability
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  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: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Serenade in E flat, K.375: 2. Menuetto
type: MusicRecording
duration: PT4M11S
duration ms: 251586
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Bläservereinigung der Wiener Philharmoniker
by artist: Karl Mayrhofer
by artist: Günter Lorenz
by artist: Alfred Prinz
by artist: Christian Cubasch
by artist: Dietmar Zeman
by artist: Camillo Öhlberger
by artist: Roland Berger
by artist: Volker Altmann
in album: Mozart: Wind Concertos and Serenades
  type: MusicAlbum
  date published: 2006-01-01
genre: classical
genre: classical-era
isrc code: DEF057303462
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057303462
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 0xac1915c86d072eb0dd82be66398929ac414bc6956e3aba41d93c088fc69a2935. 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/DEF057303462.
  date published: 2026-07-08T03:20:19Z
audio: Serenade in E flat, K.375: 2. Menuetto
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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)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Bassoon Concerto in B-Flat Major, K. 191: III. Rondo. Tempo di menuetto
type: MusicRecording
duration: PT4M24S
duration ms: 264000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Dietmar Zeman
by artist: Wiener Philharmoniker
by artist: Karl Böhm
in album: Mozart: Wind Concertos and Serenades
  type: MusicAlbum
  date published: 2006-01-01
genre: classical
genre: classical-era
isrc code: DEF057300842
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: 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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Horn Concerto No. 4 in E-Flat Major, K. 495: I. Allegro maestoso
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Serenade in E flat, K.375: 4. Menuetto
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Alla marcia - Chamber Music
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track: Sonata for Keyboard and Violin in C Major, K. 14: II. Allegro
track: Sonata for Keyboard and Violin in B-Flat Major, K. 10: II. Andante
track: Sonata for Keyboard and Violin in E Flat Major, K. 26: I. Allegro molto
track: Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
track: Six German Dances, K.571: No. 1 in D
track: Divertimento for Strings in D Major, K. 136: I. Allegro
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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Sonata for Keyboard and Violin in C Major, K. 14: II. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Sonata for Keyboard and Violin in C Major, K. 14: II. Allegro
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Sonata for Keyboard and Violin in B-Flat Major, K. 10: II. Andante
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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: Sonata for Keyboard and Violin in B-Flat Major, K. 10: II. Andante
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Sonata for Keyboard and Violin in E Flat Major, K. 26: I. Allegro molto
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audio: Sonata for Keyboard and Violin in E Flat Major, K. 26: I. Allegro molto
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Symphony No. 35 in D Major, K. 385 "Haffner": I. Allegro con spirito
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  date published: 2026-07-08T03:20:19Z
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Six German Dances, K.571: No. 1 in D
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  date published: 2026-07-08T08:56:20Z
audio: Six German Dances, K.571: No. 1 in D
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Divertimento for Strings in D Major, K. 136: I. Allegro
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Fantasia in D Minor, K.397
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Fantasia in D Minor, K.397
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Bravo! - Great Classical Recordings: Mozart
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T11:38:34Z
  audio: Divertimento in F, K.253: 3. Allegro assai
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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  subject of: OpenTimestamps Proof of Existence
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track: Requiem, K. 626 (Ed. Robbins Landon): IIIf. Lacrimosa - Live at Stephansdom, Vienna, 1991
track: 12 German Dances, K. 586: No. 11 in A Major
track: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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Requiem, K. 626 (Ed. Robbins Landon): IIIf. Lacrimosa - Live at Stephansdom, Vienna, 1991
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subject of: OpenTimestamps Proof of Existence
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audio: Requiem, K. 626 (Ed. Robbins Landon): IIIf. Lacrimosa - Live at Stephansdom, Vienna, 1991
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12 German Dances, K. 586: No. 11 in A Major
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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: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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duration: PT7M40S
duration ms: 460026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: Bravo! - Great Classical Recordings: Mozart
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genre: classical
genre: classical-era
isrc code: NLA507802439
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
  value: https://blockstream.info/api/block-height/953513
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507802439
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 0xee79cacd92eb7e42a7addd977fff15610372fc28af8676eb1d135ce6c6ada931. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507802439.
  date published: 2026-06-13T12:47:07Z
audio: Symphony No. 25 in G Minor, K. 183: I. Allegro con brio
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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: Liveness
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  additional property: Valence (Positivity)
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A Classical December: Mozart
type: MusicAlbum
date published: 2024-12-04
track: Six German Dances, K.571: No. 1 in D
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  duration: PT1M40S
  duration ms: 100853
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Concerto Köln
  by artist: Werner Ehrhardt
  in album: A Classical December: Mozart
    type: MusicAlbum
    date published: 2024-12-04
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN960432004
  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 0x752ef6d9c78ffdf4972690fbd19296524c1cc9603ff192e7d77839bd8437b84a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:32:20Z), 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/DEN960432004.
    date published: 2026-07-21T21:32:20Z
  audio: Six German Dances, K.571: No. 1 in D
    type: AudioObject
    additional property: Tempo (BPM)
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    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
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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'December' - A Season of Classics: Mozart
type: MusicAlbum
date published: 2024-12-17
track: Andante And Five Variations For Piano Duet In G, K.501: Variation 4
  type: MusicRecording
  duration: PT1M29S
  duration ms: 89586
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Martha Argerich
  by artist: Stephen Kovacevich
  in album: 'December' - A Season of Classics: Mozart
    type: MusicAlbum
    date published: 2024-12-17
  genre: classical
  genre: classical-era
  isrc code: NLA507706212
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA507706212
  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 0xe328b1860c52a187e4032ee0a9d4f2192ee97fc40dc81c91b6a4623f96a3f55c. 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/NLA507706212.
    date published: 2026-07-08T03:22:41Z
  audio: Andante And Five Variations For Piano Duet In G, K.501: Variation 4
    type: AudioObject
    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
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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
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Andante And Five Variations For Piano Duet In G, K.501: Variation 5
  type: MusicRecording
  duration: PT1M55S
  duration ms: 115493
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Martha Argerich
  by artist: Stephen Kovacevich
  in album: 'December' - A Season of Classics: Mozart
    type: MusicAlbum
    date published: 2024-12-17
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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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 0x7356a0765c0af2c28d6e5c02d430d64c762a4c930fd77698203740226ae96ed0. 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/NLA507706213.
    date published: 2026-07-08T03:20:19Z
  audio: Andante And Five Variations For Piano Duet In G, K.501: Variation 5
    type: AudioObject
    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: 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: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Symphony No. 41 In C, K.551 -: 4. Molto allegro
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  duration: PT1M7S
  duration ms: 67733
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Wiener Philharmoniker
  by artist: Riccardo Muti
  in album: 'December' - A Season of Classics: Mozart
    type: MusicAlbum
    date published: 2024-12-17
  genre: classical
  genre: classical-era
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Symphony No. 41 In C, K.551 -: 4. Molto allegro
track: Contredanse in G Major, K.15e

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x23b87556e85ddb041cd7e3ea54e439094a8585203003e530c391b600d1d93bf9

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 957124

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957124

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA509309040

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:53:27Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b87556e85ddb041cd7e3ea54e439094a8585203003e530c391b600d1d93bf9. 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/NLA509309040.
date published: 2026-07-08T03:53:27Z

Symphony No. 41 In C, K.551 -: 4. Molto allegro
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
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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
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.352
additional property: Energy
  type: PropertyValue
  value: 0.355
additional property: Speechiness
  type: PropertyValue
  value: 0.039
additional property: Acousticness
  type: PropertyValue
  value: 0.889
additional property: Instrumentalness
  type: PropertyValue
  value: 0.911
additional property: Liveness
  type: PropertyValue
  value: 0.081
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.608
additional property: Loudness (dB)
  type: PropertyValue
  value: -20.419
additional property: Key Name
  type: PropertyValue
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additional property: Mode Name
  type: PropertyValue
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Contredanse in G Major, K.15e
type: MusicRecording
duration: PT0M37S
duration ms: 37293
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Florian Birsak
in album: 'December' - A Season of Classics: Mozart
  type: MusicAlbum
  date published: 2024-12-17
genre: classical
genre: classical-era
isrc code: GBF071601110
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
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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 0x355906c31b8ce7d7d25797015f25feb7f84ed8c030bad76a83c3531ab7ad792e. 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/GBF071601110.
  date published: 2026-07-08T03:22:41Z
audio: Contredanse in G Major, K.15e
  type: AudioObject
  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: 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: Liveness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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  additional property: Mode Name
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An Era of Classical: Mozart
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date published: 2024-12-15
track: Six German Dances, K.600: No. 5 in G (Trio: Der Kanarienvogel)
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  duration: PT1M35S
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  by artist: Wolfgang Amadeus Mozart
  by artist: WDR Sinfonieorchester
  by artist: Erich Kleiber
  in album: An Era of Classical: Mozart
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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
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    date published: 2026-07-08T08:56:20Z
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d27554f1a3bac839b75daf88ab0f82295146355888848a0158e2262d43e815. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF071601330.
    date published: 2026-07-08T08:56:20Z
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  subject of: OpenTimestamps Proof of Existence
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track: Serenade in G Major, K. 525 "Eine kleine Nachtmusik": 1. Allegro
track: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Theme
track: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 2
track: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 5
track: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 6
track: Divertimento in B flat, K.270: 4. Presto

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c155e96ed0288e64f262c92479da86aca685c8303e88e77e969920f64a2400. 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/NLA507613673.
date published: 2026-07-08T03:22:41Z

Minuet in B Flat Major & Trio in E Flat Major, K15pp/qq
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Serenade in G Major, K. 525 "Eine kleine Nachtmusik": 1. Allegro
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by artist: Wiener Mozart Ensemble
by artist: Willi Boskovsky
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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: 2026-07-02T03:30:09Z
audio: Serenade in G Major, K. 525 "Eine kleine Nachtmusik": 1. Allegro
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by artist: Arthur Grumiaux
by artist: Walter Klien
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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: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Theme
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  additional property: Valence (Positivity)
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  additional property: Key Name
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Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 2
type: MusicRecording
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duration ms: 308000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Arthur Grumiaux
by artist: Walter Klien
in album: An Era of Classical: Mozart
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genre: classical
genre: classical-era
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additional property: CopyrightID
additional property: CopyrightStatus
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 2
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by artist: Arthur Grumiaux
by artist: Walter Klien
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genre: classical
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additional property: CopyrightID
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 5
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Violin Sonata in F Major, K. 377: II. Andante con variazioni: Var. 6
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by artist: Arthur Grumiaux
by artist: Walter Klien
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genre: classical
genre: classical-era
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additional property: CopyrightID
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Mozart: Serenade K.250 "Haffner" - Divertimento K.186
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track: Andante And Five Variations For Piano Duet In G, K.501: Variation 2
track: The London Sketchbook, K. 15a-ss (Orch. Smith): Presto in B-Flat Major, K. 15ll
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OpenTimestamps Proof of Existence
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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: Valence (Positivity)
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Andante And Five Variations For Piano Duet In G, K.501: Variation 2
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duration ms: 57306
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by artist: Wolfgang Amadeus Mozart
by artist: Martha Argerich
by artist: Stephen Kovacevich
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genre: classical
genre: classical-era
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae77cb44771a6b464c3f971f53406c24d3e9fad930682ef5a211361249c3cba2. 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/NLA507706210.
  date published: 2026-07-08T03:53:27Z
audio: Andante And Five Variations For Piano Duet In G, K.501: Variation 2
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The London Sketchbook, K. 15a-ss (Orch. Smith): Presto in B-Flat Major, K. 15ll
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duration ms: 48000
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by artist: Wolfgang Amadeus Mozart
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59159131746635181c1b98ddefdaf3c25180d6ea63cd3611944d2ea33369ecd8. 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/NLA507101048.
  date published: 2026-07-08T03:53:27Z
audio: The London Sketchbook, K. 15a-ss (Orch. Smith): Presto in B-Flat Major, K. 15ll
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Six German Dances, K.571: No. 5 in B flat
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by artist: Sarband
by artist: Vladimir Ivanoff
by artist: Concerto Köln
by artist: Werner Ehrhardt
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genre: classical-era
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec49db33c46f1e723d9b0bfd51548950f255f7962898ef06016056d14e583cd1. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEN960432010.
  date published: 2026-07-07T16:43:21Z
audio: Six German Dances, K.571: No. 5 in B flat
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Fantasia in C minor, K.475: Allegro
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by artist: Wolfgang Amadeus Mozart
by artist: András Schiff
in album: A Classical Journey with Mozart
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genre: classical
genre: classical-era
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03207f25474f5cc07dff20d748cdd2252e727d5ea61291a95b2abbd4ea6ab2bc. 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/GBF078010092.
  date published: 2026-07-08T03:20:19Z
audio: Fantasia in C minor, K.475: Allegro
  type: AudioObject
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Piano Version of Ballet Music from Ascanio in Alba, K.Anh207: No. 2
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duration: PT1M16S
duration ms: 76680
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Francesco Piemontesi
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genre: classical
genre: classical-era
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6138a4751a3cb5d6b3d219d2c600ded549d18cab02ea5a6284e3dc480e5ffbf0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBF071600142.
  date published: 2026-07-07T16:07:00Z
audio: Piano Version of Ballet Music from Ascanio in Alba, K.Anh207: No. 2
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Piano Trio K.495a, Start of First Movement in G (Fragment)
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duration ms: 36986
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by artist: Wolfgang Amadeus Mozart
by artist: Les Solistes des Musiciens du Louvre
in album: A Classical Journey with Mozart
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genre: classical
genre: classical-era
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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
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cac2209acaf28d3d2b1234719a6c0484f344d906ad415addb870f0ce3151ba9. 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/GBF071600340.
  date published: 2026-07-08T03:22:41Z
audio: Piano Trio K.495a, Start of First Movement in G (Fragment)
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Andantino in C, K.15b
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duration: PT1M7S
duration ms: 67546
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by artist: Wolfgang Amadeus Mozart
by artist: Erik Smith
in album: A Classical Journey with Mozart
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genre: classical
genre: classical-era
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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
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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: Andantino in C, K.15b
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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Capriccio in C Major, K.284a/4
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duration: PT1M3S
duration ms: 63986
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Florian Birsak
in album: A Classical Journey with Mozart
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  date published: 2024-12-06
genre: classical
genre: classical-era
isrc code: GBF071601450
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
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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 0xb95d3945cc1e05dddfa717337eef6bff422ebf24abd1885ec0ecbabefd459eba. 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/GBF071601450.
  date published: 2026-07-08T03:22:41Z
audio: Capriccio in C Major, K.284a/4
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Les petits riens, Ballet, K. 299b: No. 4, (Vivo)
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duration: PT1M3S
duration ms: 63506
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Academy of St. Martin in the Fields
by artist: Sir Neville Marriner
in album: A Classical Journey with Mozart
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  date published: 2024-12-06
genre: classical
genre: classical-era
isrc code: NLA508840905
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
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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 0x0771328515e3b1e95e87c64eaa700c4d9fdb6ecba905b55a8e6a36998445286a. 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/NLA508840905.
  date published: 2026-07-08T03:20:19Z
audio: Les petits riens, Ballet, K. 299b: No. 4, (Vivo)
  type: AudioObject
  additional property: Tempo (BPM)
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2025 - A New Year Celebration with Mozart
type: MusicAlbum
date published: 2024-12-31
track: Piece in F for Keyboard , K.33B
  type: MusicRecording
  duration: PT0M57S
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  by artist: Wolfgang Amadeus Mozart
  by artist: Ton Koopman
  in album: 2025 - A New Year Celebration with Mozart
    type: MusicAlbum
    date published: 2024-12-31
  genre: classical
  genre: classical-era
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  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: 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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937d8e50e63f89ce5c67e59bd81969a097779a90e7e895f3a0088a77c5c6257. 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/NLA508908108.
    date published: 2026-07-02T03:55:08Z
  audio: Piece in F for Keyboard , K.33B
    type: AudioObject
    additional property: Tempo (BPM)
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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: Energy
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    additional property: Speechiness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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A Sketchbook of Mozart
type: MusicAlbum
date published: 2025-01-09
track: The London Sketchbook, K. 15a-ss (Orch. Smith): [Contredanse] in F Major, K. 15h
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  duration ms: 47000
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Academy of St. Martin in the Fields
  by artist: Sir Neville Marriner
  in album: A Sketchbook of Mozart
    type: MusicAlbum
    date published: 2025-01-09
  genre: classical
  genre: classical-era
  isrc code: NLA507101029
  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: 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 0xbce560cd84d99b1c70e9052791fc4812353b72a248e47f4dfa91e116d56fe9c1. 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/NLA507101029.
    date published: 2026-07-08T03:22:41Z
  audio: The London Sketchbook, K. 15a-ss (Orch. Smith): [Contredanse] in F Major, K. 15h
    type: AudioObject
    additional property: Tempo (BPM)
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    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: Acousticness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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18th Century Orchestra: Mozart
type: MusicAlbum
date published: 2024-12-30
track: Piano Concerto No. 23 in A Major, K. 488: II. Adagio
  type: MusicRecording
  duration: PT6M31S
  duration ms: 391717
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Clifford Curzon
  by artist: London Symphony Orchestra
  by artist: Josef Krips
  in album: 18th Century Orchestra: Mozart
    type: MusicAlbum
    date published: 2024-12-30
  genre: classical
  genre: classical-era
  isrc code: GBF075310712
  additional property: CopyrightID
  additional property: CopyrightStatus
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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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131363e297b70dad64feda82c77a143fa3dcde2e3250b409996b7f8547c0502a. 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/GBF075310712.
    date published: 2026-07-08T03:22:41Z
  audio: Piano Concerto No. 23 in A Major, K. 488: II. 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
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    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
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.957
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.056
    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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A Winter Postcard: Mozart
type: MusicAlbum
date published: 2024-12-28
track: Piano Sonata No. 12 in F, K.332: 2. Adagio
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  duration: PT4M37S
  duration ms: 277000
  explicit: false
  by artist: Wolfgang Amadeus Mozart
  by artist: Mikhail Pletnev
  in album: A Winter Postcard: Mozart
    type: MusicAlbum
    date published: 2024-12-28
  genre: classical
  genre: classical-era
  isrc code: DEN960500342
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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 0x6b7c7239692d862980ed900dea5c8ba132a42f2d90be62f5bed9704a4afe8b33. 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/DEN960500342.
    date published: 2026-07-08T03:53:27Z
  audio: Piano Sonata No. 12 in F, K.332: 2. Adagio
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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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: Key Name
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    additional property: Mode Name
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track: Fantasia in D Minor, K. 397
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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OpenTimestamps Proof of Existence
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date published: 2026-07-02T03:55:08Z

Allegro in D Major, K. 626b/16
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Six German Dances, K.571: No. 1 in D
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subject of: OpenTimestamps Proof of Existence
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Contredanse in B Flat Major, K15gg
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subject of: OpenTimestamps Proof of Existence
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Divertimento in F, K.253: 3. Allegro assai
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subject of: OpenTimestamps Proof of Existence
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12 German Dances, K. 586: No. 7 in G Major
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  date published: 2026-07-02T11:38:34Z
audio: 12 German Dances, K. 586: No. 7 in G Major
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12 German Dances, K. 586: No. 10 in F Major
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
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3 German Dances, K. 605: No. 2 in G Major
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subject of: OpenTimestamps Proof of Existence
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Les petits riens, K.app.10 (ballet): No. 15 Gavotte gracieuse
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Minuet In G, K. 1e
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subject of: OpenTimestamps Proof of Existence
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Six German Dances, K.536: No. 5 in F
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subject of: OpenTimestamps Proof of Existence
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6 German Dances, K. 600: No. 2 in F Major
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subject of: OpenTimestamps Proof of Existence
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audio: 6 German Dances, K. 600: No. 2 in F Major
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Contredanse in D Major. Das Donnerwetter, K. 534
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audio: Contredanse in D Major. Das Donnerwetter, K. 534
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12 German Dances, K. 586: No. 11 in A Major
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subject of: OpenTimestamps Proof of Existence
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audio: 12 German Dances, K. 586: No. 11 in A Major
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12 German Dances, K. 586: No. 1 in C Major
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subject of: OpenTimestamps Proof of Existence
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audio: 12 German Dances, K. 586: No. 1 in C Major
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12 Variations on "Ah, vous dirai-je maman", K. 265: Theme “Twinkle, Twinkle, Little Star”
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  date published: 2026-07-02T16:51:38Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Theme “Twinkle, Twinkle, Little Star”
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 1
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duration ms: 31493
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by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
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genre: classical
genre: classical-era
isrc code: DEN961801952
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4e836a2e9e6dbdfa03aa13345feae6a80a143d0d4c25d268494c0f81947d62. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801952.
  date published: 2026-07-02T16:51:38Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 1
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 2
type: MusicRecording
duration: PT0M32S
duration ms: 32133
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801953
additional property: CopyrightID
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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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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801953
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 0x2c4bb165158b83a669b337c6cced57121498fd6a17cac653eb32e4e7eb0e36d2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801953.
  date published: 2026-07-07T18:39:05Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 2
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 3
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duration: PT0M35S
duration ms: 35826
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801954
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
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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 0x140fe501f965c6507693bb9679bb5fc97de749b3d05f2597331ecc68385add2f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN961801954.
  date published: 2026-07-06T06:56:49Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 3
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 4
type: MusicRecording
duration: PT0M34S
duration ms: 34186
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801955
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
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cd373e7e4a6add4103eb8bdc1c2b5ade78dc06083bbff82dff368e4433067. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN961801955.
  date published: 2026-07-06T07:16:32Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 4
  type: AudioObject
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  additional property: Musical Key
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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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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 5
type: MusicRecording
duration: PT0M33S
duration ms: 33346
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801956
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
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801956
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 0xfdbb0a9eddf99edff2af2055f85bf18e01626b7ef09ec1ae8c884dea0a22d2bc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN961801956.
  date published: 2026-07-06T07:16:32Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 5
  type: AudioObject
  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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    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
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 6
type: MusicRecording
duration: PT0M30S
duration ms: 30026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801957
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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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
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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 0x5d3b8dc4f27eee827c1b7e217483f40a9ab7dc39e820c29943b06a29baf54ea7. 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/DEN961801957.
  date published: 2026-07-08T03:53:27Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 6
  type: AudioObject
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  additional property: Musical Key
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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: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 7
type: MusicRecording
duration: PT0M33S
duration ms: 33453
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801958
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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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
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ff99b492ac1904d83aa65c26598d18657155e165afd79ae94870727c310d4e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:28:00Z), 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/DEN961801958.
  date published: 2026-07-21T21:28:00Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 7
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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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    value: 0.25
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 8
type: MusicRecording
duration: PT0M44S
duration ms: 44026
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
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  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801959
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
  value: https://blockstream.info/api/block-height/957064
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801959
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:43:08Z
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 0x90662109f79b0026073123eefa2ce25deef23a30843d054dfac7cc26e74df92f. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEN961801959.
  date published: 2026-07-07T16:43:08Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 8
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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: 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: Liveness
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  additional property: Valence (Positivity)
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 9
type: MusicRecording
duration: PT0M35S
duration ms: 35160
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801960
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
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801960
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0xb0a73bc75cb6682219ce7928b47c3648f8e45a505425ce06151a85fd956b6b01. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEN961801960.
  date published: 2026-07-06T06:56:49Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 9
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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
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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: Valence (Positivity)
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 10
type: MusicRecording
duration: PT0M32S
duration ms: 32745
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801961
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
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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 0x62651285a492bf61443f64afee8702474d622b0ec514c57010f59f052d924abd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN961801961.
  date published: 2026-07-06T07:53:57Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 10
  type: AudioObject
  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
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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: Valence (Positivity)
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  additional property: Loudness (dB)
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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 11
type: MusicRecording
duration: PT2M29S
duration ms: 149973
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801962
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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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
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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 0xf5d1188c378bdeb64bf57ac0baffbee6ae42660a4fa60805e955d950c6fc373f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN961801962.
  date published: 2026-07-07T18:50:38Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 11
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  additional property: Musical Key
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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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12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 12
type: MusicRecording
duration: PT1M27S
duration ms: 87040
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Lang Lang
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: DEN961801963
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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e3508fae25cfc16d217c4a26fea5a4096fbb2a4e4597b8731e480afecfeb49. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN961801963.
  date published: 2026-07-06T07:53:57Z
audio: 12 Variations on "Ah, vous dirai-je maman", K. 265: Var. 12
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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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: Acousticness
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Minuet in F, K.2
type: MusicRecording
duration: PT0M57S
duration ms: 57480
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Erik Smith
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: NLA507602312
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
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c8910c230a891960cccbfe5e6c1a04f1aab8ff04100560e57f28c8ac422cb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLA507602312.
  date published: 2026-07-06T07:16:32Z
audio: Minuet in F, K.2
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  additional property: Musical Key
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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: Acousticness
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Four German Dances, K.602: 2. in F Major
type: MusicRecording
duration: PT1M57S
duration ms: 117000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Wiener Mozart Ensemble
by artist: Willi Boskovsky
in album: "18th Century Composers" - Mozart & Beethoven
  type: MusicAlbum
  date published: 2025-04-08
genre: classical
genre: classical-era
isrc code: GBBBA6550672
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
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subject of: OpenTimestamps Proof of Existence
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audio: Four German Dances, K.602: 2. in F Major
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12 German Dances, K. 586: No. 4 in F Major
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subject of: OpenTimestamps Proof of Existence
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Rage Over A Lost Penny, Op. 129
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subject of: OpenTimestamps Proof of Existence
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Piano Sonata No. 25 in G, Op. 79: 3. Vivace
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subject of: OpenTimestamps Proof of Existence
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audio: Piano Sonata No. 25 in G, Op. 79: 3. Vivace
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": III. Presto agitato
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audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight Sonata": III. Presto agitato
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24 Variations on "Venni Amore" in D Major, WoO 65: Variation I
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24 Variations on "Venni Amore" in D Major, WoO 65: Variation II
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24 Variations on "Venni Amore" in D Major, WoO 65: Variation III
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Piano Sonata No. 14 in C-Sharp Minor, Op. 27 No. 2 "Moonlight": II. Allegretto
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Thema. Andante
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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: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Thema. Andante
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation I
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by artist: Pierre Fournier
by artist: Wilhelm Kempff
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation I
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation II
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation II
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation III
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation III
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation IV
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by artist: Wilhelm Kempff
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genre: classical
genre: classical-piano
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation IV
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation V. Si prenda il tempo un poco più vivace
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation V. Si prenda il tempo un poco più vivace
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation VI. Adagio
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  date published: 2026-07-02T11:34:59Z
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7 Variations on "Bei Männern, welche Liebe fühlen", for Cello and Piano, WoO 46: Variation VII. Allegro, ma non troppo
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Violin Romance No. 2 in F major, Op. 50
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Variations on Mozart's "La ci darem la mano": Variation 6 (Lento espressivo)
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  date published: 2026-07-02T11:34:59Z
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Violin Concerto in D Major, Op. 61: 3. Rondo. Allegro - Excerpt
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March for Military Music in F Major, WoO 18
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6 Bagatelles, Op. 126: No. 3 Andante
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Piano Piece in A Major, Kafka f. 160r
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12 German Dances, WoO 8: 7. German Dance in C Major
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Theme. Allegretto
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation I
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation II
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation III
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation IV
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation V
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation VII
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation VIII
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation IX
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation X. Adagio
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation XI. Poco Adagio, quasi Andante
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12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation XII. Allegro
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subject of: OpenTimestamps Proof of Existence
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Divertimento in F, K.253: 3. Allegro assai
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Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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Divertimento No. 15 in B Flat Major, K.287: 2. Tema con variazioni: Andante grazioso
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Divertimento No. 15 in B Flat Major, K.287: Variation III
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Divertimento No. 15 in B Flat Major, K.287: Variation IV
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Divertimento No. 15 in B Flat Major, K.287: Variation V
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Divertimento No. 15 in B Flat Major, K.287: Variation VI
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subject of: OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T15:27:37Z
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Violin Sonata in G Major, K. 379: II. Tema con variazioni: Var. 2
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  date published: 2026-07-06T06:56:49Z
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Violin Sonata in G Major, K. 379: II. Tema con variazioni: Var. 3
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Violin Sonata in G Major, K. 379: II. Tema con variazioni: Theme. Allegretto – Coda
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  date published: 2026-07-21T17:21:53Z
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