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type: MusicGroup
genre: chamber music
popularity: 7
followers: 296
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: OTSProofURL
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additional property: OTSRecordURL
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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: 2026-06-19T03:22:39Z
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album: Primetime in der Wolfsschlucht
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  date published: 2022-07-04
  track: Der Freischütz, op.77: Ouvertüre
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    by artist: german hornsound
    by artist: Christoph Ess
    in album: Primetime in der Wolfsschlucht
      type: MusicAlbum
      date published: 2022-07-04
    genre: classical
    genre: opera
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1E12220001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T17:29:52Z
    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 0x7fb0440c618d4db93e4831ae5b5b6883830ec48e382acd7c12154f0706181ad5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1E12220001 — a six-check JSON result.
      date published: 2026-07-31T17:29:52Z
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  track: Der Freischütz, op.77: Jägerchor
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    by artist: german hornsound
    by artist: Christoph Ess
    in album: Primetime in der Wolfsschlucht
      type: MusicAlbum
      date published: 2022-07-04
    genre: classical
    genre: opera
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      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 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: 2026-07-31T05:17:02Z
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      additional property: Tempo (BPM)
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  track: Ouvertüre, op.26, "Die Hebriden"
album: Mozart: Twelve Duets For Two Horns K487 (K496A)
album: Siegfried und Violetta oder List, Last, Lust und Lunge
album: Beethoven's World - Beethoven, Wranitzky, Reicha, Vorisek: Concertos
album: Mozart: The Horn Concertos (Live)
album: Madsen: Works for Horn

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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Ouvertüre, op.26, "Die Hebriden"
type: MusicRecording
duration: PT6M13S
duration ms: 373305
explicit: false
by artist: Felix Mendelssohn
by artist: german hornsound
by artist: Christoph Ess
in album: Primetime in der Wolfsschlucht
  type: MusicAlbum
  date published: 2022-07-04
genre: classical
genre: early-romantic-era
genre: german-romanticism
genre: classical-piano
genre: choral
genre: chamber-music
isrc code: DE1E12220016
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  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 0xb5127b4ab6ce9c407d3bceb120704c85e34cd113440fee111d2193c1358950f0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1E12220016 — a six-check JSON result.
  date published: 2026-08-01T02:22:04Z
audio: Ouvertüre, op.26, "Die Hebriden"
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  additional property: Mode (Major/Minor)
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  additional property: Speechiness
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  additional property: Acousticness
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Mozart: Twelve Duets For Two Horns K487 (K496A)
type: MusicAlbum
date published: 2022-05-16
track: 12 Duets For Two Horns, K. 487: I. Allegro
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  by artist: Christoph Ess
  by artist: german hornsound
  by artist: Timo Steininger
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    type: MusicAlbum
    date published: 2022-05-16
  popularity: 3
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8aa6cc97d4a1b34ed2fb07cde2a15ddd3b422cf611b0c0e96564b7854ac5fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1E12210001 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: 12 Duets For Two Horns, K. 487: I. Allegro
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    additional property: Mode (Major/Minor)
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track: 12 Duets For Two Horns, K. 487: II. Menuetto
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  by artist: Christoph Ess
  by artist: german hornsound
  by artist: Timo Steininger
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  genre: classical
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  genre: classical-piano
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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 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 0x25ed1429b96bdf5ed9c1ca5f0d640625bb76f60d033f7522d5c2476aa9f2241f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1E12210002 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
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track: 12 Duets For Two Horns, K. 487: III. Andante
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  by artist: Wolfgang Amadeus Mozart
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  by artist: german hornsound
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 12 Duets For Two Horns, K. 487: III. Andante
track: 12 Duets For Two Horns, K. 487: IV. Polonaise
track: 12 Duets For Two Horns, K. 487: V. Larghetto
track: 12 Duets For Two Horns, K. 487: VI. Menuetto
track: 12 Duets For Two Horns, K. 487: VII. Adagio
track: 12 Duets For Two Horns, K. 487: VIII. Allegro
track: 12 Duets For Two Horns, K. 487: IX. Menuetto
track: 12 Duets For Two Horns, K. 487: X. Andante
track: 12 Duets For Two Horns, K. 487: XI. Menuetto
track: 12 Duets For Two Horns, K. 487: XII. Allegro

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date published: 2026-07-08T03:20:19Z

12 Duets For Two Horns, K. 487: III. Andante
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12 Duets For Two Horns, K. 487: IV. Polonaise
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12 Duets For Two Horns, K. 487: VI. Menuetto
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subject of: OpenTimestamps Proof of Existence
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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: 2026-07-31T21:25:57Z
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Siegfried und Violetta oder List, Last, Lust und Lunge
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date published: 2013-09-24

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

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