Niek De Groot
type: MusicGroup
genre: chamber music
popularity: 12
followers: 160
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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: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77def1ab7271a6bd4600bf45207fcd69902e4c566abcbdd054296177ae3c6404. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a5de160-59e2-4151-aac7-f093d3a36e21.json and https://artists.proofprofile.net/proofs/artist/6a5de160-59e2-4151-aac7-f093d3a36e21.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T20:19:15Z
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album: György Kurtág: Scenes (Scenes from a Novel, Op. 19, Eight Duos for Violin and Cimbalom, Op. 4, Seven Songs, Op. 22, In memory of a Winter evening, Op. 8, Several Movements from Georg Christop
  type: MusicAlbum
  date published: 2019-08-02
album: Labor: Piano Quintet in E Minor, Op. 3 & Piano Quartet in C Major, Op. 6
  type: MusicAlbum
  date published: 2019-10-04
album: Sofia Gubaidulina: Galgenlieder à 3
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  date published: 2024-09-09
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 1. Die Mitternachtsmaus
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    by artist: Helena Rasker
    by artist: Niek De Groot
    by artist: Francisco Anguas
    in album: Sofia Gubaidulina: Galgenlieder à 3
      type: MusicAlbum
      date published: 2024-09-09
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
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      value: 2026-07-02T03:30:09Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-02T03:30:09Z
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  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 2. Nachdenken
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    by artist: Niek De Groot
    by artist: Francisco Anguas
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      date published: 2024-09-09
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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 0xfa7ec013a9ec296263a10eb9c19f5e33442422f44598467cf0834780f03d50d0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ATK942202302 — a six-check JSON result.
      date published: 2026-07-29T19:35:34Z
    audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 2. Nachdenken
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  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 3. Das ästhetische Wiesel
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 4. Das Knie
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 5. Spiel I
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 6. Spiel II
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 7. Die Beichte des Wurms
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 8. Psalm
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 9. Der Tanz
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 10. Das Gebet
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 11. Das Fest des Wüstlings
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 12. Improvisation
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 13. Fisches Nachtgesang
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 14. Nein!
  track: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 15. Das Mondschaf
album: French Connection
album: Alfred Huber: Chamber Music
album: Rossini: Sonatas for Strings Nos. 4-6 – Hoffmeister: Double Bass Quartets Nos. 3 & 4
album: Duos for Violin & Double Bass
album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
album: Brahms, Gubaidulina, Hindemith & Vasks: Sonatas for Double Bass

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Mode Name
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duration: PT1M39S
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by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
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  date published: 2024-09-09
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 3. Das ästhetische Wiesel
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Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 4. Das Knie
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by artist: Francisco Anguas
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-07T14:41:13Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 4. Das Knie
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Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 5. Spiel I
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400fbd824b0a4f2720ff75b816c186c185725d74c178c27c762d1287840497c4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ATK942202305 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 5. Spiel I
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 162.308
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.482
  additional property: Energy
    type: PropertyValue
    value: 0.226
  additional property: Speechiness
    type: PropertyValue
    value: 0.155
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.249
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.103
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.48
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 6. Spiel II
type: MusicRecording
duration: PT3M9S
duration ms: 189000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202306
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T08:04:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d868766715b228a315ef0de6691454cd6470fbfd64a6e1f64ce91efd4ed9801
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960229
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960229
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202306
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T08:30:10Z
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 0x1d868766715b228a315ef0de6691454cd6470fbfd64a6e1f64ce91efd4ed9801. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ATK942202306 — a six-check JSON result.
  date published: 2026-07-30T08:30:10Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 6. Spiel II
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 109.908
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.526
  additional property: Energy
    type: PropertyValue
    value: 0.261
  additional property: Speechiness
    type: PropertyValue
    value: 0.088
  additional property: Acousticness
    type: PropertyValue
    value: 0.853
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.555
  additional property: Liveness
    type: PropertyValue
    value: 0.078
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.064
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.053
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 7. Die Beichte des Wurms
type: MusicRecording
duration: PT2M34S
duration ms: 154000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202307
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T08:26:04+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f43a184a7aecb54b1ceb3b23347c2dacbef3437beb193ed9b6556f49a98fca2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960229
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960229
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202307
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T08:30:10Z
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 0x0f43a184a7aecb54b1ceb3b23347c2dacbef3437beb193ed9b6556f49a98fca2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ATK942202307 — a six-check JSON result.
  date published: 2026-07-30T08:30:10Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 7. Die Beichte des Wurms
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.122
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.383
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.035
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.036
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 8. Psalm
type: MusicRecording
duration: PT2M45S
duration ms: 165000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202308
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T22:46:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb01023663092c1405e1bdd57a1f1a1ce649b8d9efd932318334597973abc3279
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960161
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960161
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202308
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:51:26Z
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 0xb01023663092c1405e1bdd57a1f1a1ce649b8d9efd932318334597973abc3279. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/ATK942202308 — a six-check JSON result.
  date published: 2026-07-29T22:51:26Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 8. Psalm
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 160.257
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.116
  additional property: Energy
    type: PropertyValue
    value: 0.02
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.975
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.112
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 9. Der Tanz
type: MusicRecording
duration: PT6M16S
duration ms: 376000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T22:37:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdffcb3cdce3219dd221cf0281f006ab7bf29aa23a366fd89160af5c2c4a765e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960160
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960160
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202309
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59Z
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 0xdffcb3cdce3219dd221cf0281f006ab7bf29aa23a366fd89160af5c2c4a765e3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ATK942202309 — a six-check JSON result.
  date published: 2026-07-29T22:48:59Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 9. Der Tanz
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 171.56
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.458
  additional property: Energy
    type: PropertyValue
    value: 0.202
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.494
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.468
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.911
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 10. Das Gebet
type: MusicRecording
duration: PT4M22S
duration ms: 262000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202310
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T06:30:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcca58bd87e7c50c3ea3222c65dc0678c6acd4b6225a3e5154557368256a6a21f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960218
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960218
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202310
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T06:57:05Z
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 0xcca58bd87e7c50c3ea3222c65dc0678c6acd4b6225a3e5154557368256a6a21f. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202310 — a six-check JSON result.
  date published: 2026-07-30T06:57:05Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 10. Das Gebet
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.73
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.273
  additional property: Energy
    type: PropertyValue
    value: 0.016
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.811
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.025
  additional property: Liveness
    type: PropertyValue
    value: 0.074
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.029
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.556
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 11. Das Fest des Wüstlings
type: MusicRecording
duration: PT2M25S
duration ms: 145000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202311
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:53:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfb380bde8f80a52abb1493c13a47a541080ac97026d1f95b2dc77333eadca7f0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202311
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 0xfb380bde8f80a52abb1493c13a47a541080ac97026d1f95b2dc77333eadca7f0. 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/ATK942202311 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 11. Das Fest des Wüstlings
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.999
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.62
  additional property: Energy
    type: PropertyValue
    value: 0.28
  additional property: Speechiness
    type: PropertyValue
    value: 0.078
  additional property: Acousticness
    type: PropertyValue
    value: 0.915
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.096
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.113
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 12. Improvisation
type: MusicRecording
duration: PT1M33S
duration ms: 93000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202312
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T00:47:59+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x0b23ebe427b773851a6ea123737bb72f1a20379011fd9dd855ac9b00b769123d
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202312
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 0x0b23ebe427b773851a6ea123737bb72f1a20379011fd9dd855ac9b00b769123d. 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/ATK942202312 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 12. Improvisation
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  additional property: Tempo (BPM)
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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
    value: 0.083
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.129
  additional property: Loudness (dB)
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    value: -46.798
  additional property: Key Name
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  additional property: Mode Name
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Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 13. Fisches Nachtgesang
type: MusicRecording
duration: PT1M7S
duration ms: 67000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202313
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T06:25:41+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x61a9e5461bddf8a3b49e0ba33cbe0ce297389e734f9c60b04f6af0326011d2d8
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960216
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202313
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T06:39:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a9e5461bddf8a3b49e0ba33cbe0ce297389e734f9c60b04f6af0326011d2d8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202313 — a six-check JSON result.
  date published: 2026-07-30T06:39:12Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 13. Fisches Nachtgesang
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  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0
  additional property: Energy
    type: PropertyValue
    value: 0
  additional property: Speechiness
    type: PropertyValue
    value: 0
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0
  additional property: Loudness (dB)
    type: PropertyValue
    value: -4.615
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Minor

Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 14. Nein!
type: MusicRecording
duration: PT2M45S
duration ms: 165000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202314
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:06:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb6cd1766f8c293809948abca6f257e1da549b145e888cc08e070a71042d201c9
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202314
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 0xb6cd1766f8c293809948abca6f257e1da549b145e888cc08e070a71042d201c9. 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/ATK942202314 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 14. Nein!
  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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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.335
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.157
  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 15. Das Mondschaf
type: MusicRecording
duration: PT6M50S
duration ms: 410000
explicit: false
by artist: Sofia Gubaidulina
by artist: Helena Rasker
by artist: Niek De Groot
by artist: Francisco Anguas
in album: Sofia Gubaidulina: Galgenlieder à 3
  type: MusicAlbum
  date published: 2024-09-09
isrc code: ATK942202315
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T10:07:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5b8ffc1fda8c21f22d5a1ce1010fe12250342ea88555a41c5f61a4aaa979ca3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960247
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960247
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATK942202315
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T10:42:33Z
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 0xf5b8ffc1fda8c21f22d5a1ce1010fe12250342ea88555a41c5f61a4aaa979ca3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ATK942202315 — a six-check JSON result.
  date published: 2026-07-30T10:42:33Z
audio: Galgenlieder à 3 (1996) Fünfzehn Stücke für Gesang, Schlagzeug und Kontrabass auf Gedichte von Christian Morgenstern: 15. Das Mondschaf
  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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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.146
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.033
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.256
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
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French Connection
type: MusicAlbum
date published: 2023-12-11

Alfred Huber: Chamber Music
type: MusicAlbum
date published: 2022-11-04

Rossini: Sonatas for Strings Nos. 4-6 – Hoffmeister: Double Bass Quartets Nos. 3 & 4
type: MusicAlbum
date published: 2019-02-01

Duos for Violin & Double Bass
type: MusicAlbum
date published: 2018-02-02

Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
type: MusicAlbum
date published: 2017-12-01
track: Sonata for Strings No. 1 in G Major: I. Moderato
  type: MusicRecording
  duration: PT5M12S
  duration ms: 312293
  explicit: false
  by artist: Gioachino Rossini
  by artist: Minna Pensola
  by artist: Antti Tikkanen
  by artist: Tuomas Lehto
  by artist: Niek De Groot
  in album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2017-12-01
  genre: classical
  genre: opera
  isrc code: SEAEY1717010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T16:08:26+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xd9ea52f7c2fd66934a28345d8384176b7bfd3868514bd6a5840bf88bc17f80b3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960435
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1717010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T16:33:26Z
  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 0xd9ea52f7c2fd66934a28345d8384176b7bfd3868514bd6a5840bf88bc17f80b3. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/SEAEY1717010 — a six-check JSON result.
    date published: 2026-07-31T16:33:26Z
  audio: Sonata for Strings No. 1 in G Major: I. Moderato
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 103.067
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
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      value: 1
    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: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.323
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.207
    additional property: Key Name
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      value: D
    additional property: Mode Name
      type: PropertyValue
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track: Sonata for Strings No. 1 in G Major: II. Andante
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235773
  explicit: false
  by artist: Gioachino Rossini
  by artist: Minna Pensola
  by artist: Antti Tikkanen
  by artist: Tuomas Lehto
  by artist: Niek De Groot
  in album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2017-12-01
  genre: classical
  genre: opera
  isrc code: SEAEY1717020
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xf6a864a43513d0f1a8cfb267ad1f640787beba5ea6c5f903019d0e71493e9901
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960473
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAEY1717020
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T22:27:44Z
  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 0xf6a864a43513d0f1a8cfb267ad1f640787beba5ea6c5f903019d0e71493e9901. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEAEY1717020 — a six-check JSON result.
    date published: 2026-07-31T22:27:44Z
  audio: Sonata for Strings No. 1 in G Major: II. Andante
    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: Loudness (dB)
      type: PropertyValue
      value: -30.954
    additional property: Key Name
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      value: Eb
    additional property: Mode Name
      type: PropertyValue
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track: Sonata for Strings No. 1 in G Major: III. Allegro
  type: MusicRecording
  duration: PT2M38S
  duration ms: 158253
  explicit: false
  by artist: Gioachino Rossini
  by artist: Minna Pensola
  by artist: Antti Tikkanen
  by artist: Tuomas Lehto
  by artist: Niek De Groot
  in album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
    type: MusicAlbum
    date published: 2017-12-01
  genre: classical
  genre: opera
  isrc code: SEAEY1717030
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  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
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track: Sonata for Strings No. 2 in A Major: I. Allegro
track: Sonata for Strings No. 2 in A Major: III. Allegro

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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 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

OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3760be9a25da3fc713e9cbbfa0360bf543337e403f51903a6b59d545930c8e. 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/SEAEY1717030 — a six-check JSON result.
date published: 2026-07-31T17:29:52Z

Sonata for Strings No. 1 in G Major: III. Allegro
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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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Sonata for Strings No. 2 in A Major: I. Allegro
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duration: PT7M13S
duration ms: 433560
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by artist: Minna Pensola
by artist: Antti Tikkanen
by artist: Tuomas Lehto
by artist: Niek De Groot
in album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
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genre: classical
genre: opera
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-31T06:42:11Z
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Sonata for Strings No. 2 in A Major: III. Allegro
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by artist: Minna Pensola
by artist: Antti Tikkanen
by artist: Tuomas Lehto
by artist: Niek De Groot
in album: Rossini: Sonatas for Strings Nos. 1-3 - Hoffmeister: Double Bass Quartets Nos. 1 & 2
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genre: classical
genre: opera
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additional property: CopyrightID
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T18:23:33Z
audio: Sonata for Strings No. 2 in A Major: III. Allegro
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Brahms, Gubaidulina, Hindemith & Vasks: Sonatas for Double Bass
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date published: 2015-07-01
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T15:20:15Z
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