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album: Das Philharmonia Horn Quartett
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album: Moderne Klassiker: Horn
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track: Divertimento in F, K.253: 3. Allegro assai
track: Nonet in F, Op. 31: 3. Adagio
track: Nonetto (1959): 2. Andante
track: Scherzo from A Midsummer Night's Dream, Op. 61
track: Horn Concerto No. 3 in E-Flat Major, K. 447: I. Allegro
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track: Nonet in F, Op. 31: 1. Allegro
track: Nonet in F, Op. 31: 2. Scherzo (Allegro)
track: Nonet in F, Op. 31: 4. Finale (Vivace)
track: Nonetto (1959): 1. Poco allegro
track: Nonetto (1959): 3. Allegretto
track: Horn Concerto No. 1 in D Major, K. 412: I. Allegro
track: Horn Concerto No. 2 in E-Flat Major, K. 417: III. Rondo. Allegro

Divertimento in F, K.253: 3. Allegro assai
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Nonet in F, Op. 31: 3. Adagio
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Nonetto (1959): 2. Andante
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Scherzo from A Midsummer Night's Dream, Op. 61
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Nonet in F, Op. 31: 1. Allegro
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  date published: 2026-07-30T15:42:38Z
audio: Nonet in F, Op. 31: 1. Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Nonet in F, Op. 31: 2. Scherzo (Allegro)
type: MusicRecording
duration: PT7M10S
duration ms: 430320
explicit: false
by artist: Louis Spohr
by artist: Wolfgang Schulz
by artist: Hansjorg Schellenberger
by artist: Karl Leister
by artist: Milan Turkovic
by artist: Günter Högner
by artist: Gerhart Hetzel
by artist: Wolfram Christ
by artist: Georg Faust
by artist: Alois Posch
in album: Spohr: Nonetto In F Major, Op. 31 / Martinu: Nonetto (1959)
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  date published: 1989-01-01
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Nonet in F, Op. 31: 2. Scherzo (Allegro)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Nonet in F, Op. 31: 4. Finale (Vivace)
type: MusicRecording
duration: PT7M34S
duration ms: 454066
explicit: false
by artist: Louis Spohr
by artist: Wolfgang Schulz
by artist: Hansjorg Schellenberger
by artist: Karl Leister
by artist: Milan Turkovic
by artist: Günter Högner
by artist: Gerhart Hetzel
by artist: Wolfram Christ
by artist: Georg Faust
by artist: Alois Posch
in album: Spohr: Nonetto In F Major, Op. 31 / Martinu: Nonetto (1959)
  type: MusicAlbum
  date published: 1989-01-01
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T10:42:33Z
audio: Nonet in F, Op. 31: 4. Finale (Vivace)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Nonetto (1959): 1. Poco allegro
type: MusicRecording
duration: PT4M49S
duration ms: 289693
explicit: false
by artist: Bohuslav Martinů
by artist: Wolfgang Schulz
by artist: Hansjorg Schellenberger
by artist: Karl Leister
by artist: Milan Turkovic
by artist: Günter Högner
by artist: Gerhart Hetzel
by artist: Wolfram Christ
by artist: Georg Faust
by artist: Alois Posch
in album: Spohr: Nonetto In F Major, Op. 31 / Martinu: Nonetto (1959)
  type: MusicAlbum
  date published: 1989-01-01
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T06:39:12Z
audio: Nonetto (1959): 1. Poco allegro
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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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  additional property: Loudness (dB)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Nonetto (1959): 3. Allegretto
type: MusicRecording
duration: PT5M8S
duration ms: 308000
explicit: false
by artist: Bohuslav Martinů
by artist: Wolfgang Schulz
by artist: Hansjorg Schellenberger
by artist: Karl Leister
by artist: Milan Turkovic
by artist: Günter Högner
by artist: Gerhart Hetzel
by artist: Wolfram Christ
by artist: Georg Faust
by artist: Alois Posch
in album: Spohr: Nonetto In F Major, Op. 31 / Martinu: Nonetto (1959)
  type: MusicAlbum
  date published: 1989-01-01
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3479651a7f4c55348ba5ed9130bc3666eec9537487b4807323c0e7200799d320. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEF058802833.
  date published: 2026-07-30T20:35:49Z
audio: Nonetto (1959): 3. Allegretto
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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
    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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isrc code: DEF058802833
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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Horn Concerto No. 1 in D Major, K. 412: I. Allegro
type: MusicRecording
duration: PT5M18S
duration ms: 318813
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Günter Högner
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a30bace2270e637cb7afa70770f9087a839678c3e98cb1e1d611b29659cd8a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057901321.
  date published: 2026-07-31T18:48:12Z
audio: Horn Concerto No. 1 in D Major, K. 412: I. Allegro
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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: Valence (Positivity)
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  additional property: Loudness (dB)
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additional property: OTSVerificationAPI
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

Horn Concerto No. 2 in E-Flat Major, K. 417: III. Rondo. Allegro
type: MusicRecording
duration: PT3M24S
duration ms: 204200
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Günter Högner
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fbe152223e31d30bf1f76e97d075e26b99bccd827230b777123121488b0bd6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057901343.
  date published: 2026-07-31T18:48:12Z
audio: Horn Concerto No. 2 in E-Flat Major, K. 417: III. Rondo. Allegro
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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: Valence (Positivity)
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  additional property: Loudness (dB)
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isrc code: DEF057901343
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960448
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T18:48:12+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch