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type: MusicGroup
genre: chamber music
popularity: 31
followers: 42
additional property: CopyrightID
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: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): I. Marche - World Premiere Recording
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  duration: PT2M16S
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  by artist: Wolfgang Amadeus Mozart
  by artist: Leonhard Baumgartner
  by artist: Margarita Pochebut
  by artist: Svenja Dose
  by artist: Oscar Jockel
  in album: Classical Favourites: Chamber Music
    type: MusicAlbum
    date published: 2024-11-13
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122ca6acd32d8dc2b8d6b991aa4b8d07317e7fe337dcfde693fe02a1146fb45. 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/DEN962402371.
    date published: 2026-07-08T03:20:19Z
  audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): I. Marche - World Premiere Recording
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): II. Allegro - World Premiere Recording
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  by artist: Leonhard Baumgartner
  by artist: Margarita Pochebut
  by artist: Svenja Dose
  by artist: Oscar Jockel
  in album: Classical Favourites: Chamber Music
    type: MusicAlbum
    date published: 2024-11-13
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: CopyrightID
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-08T03:20:19Z
  audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): II. Allegro - World Premiere Recording
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    additional property: Mode (Major/Minor)
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    additional property: Instrumentalness
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    additional property: Valence (Positivity)
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track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): III. Menuet [I] – Trio - World Premiere Recording
track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): V. Adagio - World Premiere Recording
track: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): VI. Menuet [II] – Trio - World Premiere Recording

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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): III. Menuet [I] – Trio - World Premiere Recording
type: MusicRecording
duration: PT2M13S
duration ms: 133173
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Leonhard Baumgartner
by artist: Margarita Pochebut
by artist: Svenja Dose
by artist: Oscar Jockel
in album: Classical Favourites: Chamber Music
  type: MusicAlbum
  date published: 2024-11-13
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEN962402373
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
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483e1571f5d638a6d24ef373366febeade8d6b3845a00b0b0fd6dab8c746dc19. 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/DEN962402373.
  date published: 2026-07-08T03:20:19Z
audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): III. Menuet [I] – Trio - World Premiere Recording
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Key Name
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
type: MusicRecording
duration: PT1M10S
duration ms: 70826
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Leonhard Baumgartner
by artist: Margarita Pochebut
by artist: Svenja Dose
by artist: Oscar Jockel
in album: Classical Favourites: Chamber Music
  type: MusicAlbum
  date published: 2024-11-13
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEN962402374
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
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ec19634a623048f6ee67ee6b41658d162118ad14ae396f910355839ca88b9f. 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/DEN962402374.
  date published: 2026-07-08T03:20:19Z
audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): V. Adagio - World Premiere Recording
type: MusicRecording
duration: PT2M23S
duration ms: 143653
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Leonhard Baumgartner
by artist: Margarita Pochebut
by artist: Svenja Dose
by artist: Oscar Jockel
in album: Classical Favourites: Chamber Music
  type: MusicAlbum
  date published: 2024-11-13
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: DEN962402375
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2311f45d6b23dc3370e62c4c5ccdb702afab37bcb9e5e7d518e53ed7c700cd. 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/DEN962402375.
  date published: 2026-07-08T03:20:19Z
audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): V. Adagio - World Premiere Recording
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): VI. Menuet [II] – Trio - World Premiere Recording
type: MusicRecording
duration: PT1M52S
duration ms: 112693
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Leonhard Baumgartner
by artist: Margarita Pochebut
by artist: Svenja Dose
by artist: Oscar Jockel
in album: "Grande valse" - Classical Dances
  type: MusicAlbum
  date published: 2024-12-02
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
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audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): VI. Menuet [II] – Trio - World Premiere Recording
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Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
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by artist: Wolfgang Amadeus Mozart
by artist: Leonhard Baumgartner
by artist: Margarita Pochebut
by artist: Svenja Dose
by artist: Oscar Jockel
in album: A Classical Minuet - Mozart
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genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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audio: Serenade in C Major, K. 648 "A Very Little Night Music" (Original Version for 2 Violins & Bass): IV. Polonoise "Boloneso" - World Premiere Recording
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