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genre: chamber music
popularity: 16
followers: 3083
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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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album: Modern Solo
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  date published: 2011-01-01
  track: Der Erlkonig
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      date published: 2011-01-01
    genre: chamber music
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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: 2026-07-02T16:51:38Z
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  track: Paganiniana
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      date published: 2011-01-01
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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
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      date published: 2026-07-02T16:51:38Z
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album: Schumann & Brahms
track: Suite, Op. 23: IV. Lied. Schlicht und innig, nicht zu langsam
track: Schwanengesang, D. 957: No. 4, Ständchen
track: Ich Liebe Dich WoO 123
track: Piano Quintet in E Major, Op. 15: I. Mäßiges Zeitmaß, mit schwungvoll blühendem Ausdruck
track: Piano Quintet in E Major, Op. 15: II. Adagio. Mit größter Ruhe, stets äußerst gebunden und ausdrucksvoll
track: Suite, Op. 23: III. Groteske. Möglichst rasch
track: Piano Quintet in E Major, Op. 15: III. Finale. Gemessen beinahe pathetisch
track: Erlkönig D 328
track: Auf dem Wasser zu Singen D 774
track: Myrthen, op.25: Widmung
track: 3 Romances For Violin And Piano, Op. 22: 3. Leidenschaftlich schnell
track: Suite, Op. 23: I. Präludium und Fuge. Kräftig und bestimmt
track: Heidenröslein D257
track: 3 Romances For Violin And Piano, Op. 22: 1. Andante molto
track: 3 Romances For Violin And Piano, Op. 22: 2. Allegretto
track: Suite, Op. 23: II. Walzer. Nicht schnell, anmutig
track: Suite, Op. 23: V. Rondo. Finale
track: Sehnsucht nach dem Frühlinge KV 596
track: Wiegenlied KV 350

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Schumann & Brahms
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date published: 2016-11-08
track: 3 Romances For Violin And Piano, Op. 22: 1. Andante molto
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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: 2026-07-18T21:01:11Z
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Suite, Op. 23: IV. Lied. Schlicht und innig, nicht zu langsam
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duration: PT3M44S
duration ms: 224640
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Spectrum Concerts Berlin
by artist: Boris Brovtsyn
by artist: Clara Jumi Kang
by artist: Torleif Thedéen
by artist: Eldar Nebolsin
in album: Korngold: Suite, Op. 23 & Piano Quintet, Op. 15
  type: MusicAlbum
  date published: 2020-11-13
popularity: 18
genre: early-modern-classical
genre: classic-soundtrack
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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: 2026-07-02T03:55:08Z
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Schwanengesang, D. 957: No. 4, Ständchen
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by artist: Franz Schubert
by artist: Sumi Jo
by artist: Clara Jumi Kang
by artist: Wen Xiao Zheng
by artist: Christopher Park
in album: Ich Liebe Dich
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popularity: 8
genre: classical
genre: classical-piano
genre: chamber-music
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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: 2026-07-06T06:56:49Z
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Ich Liebe Dich WoO 123
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by artist: Suyoen Kim
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by artist: Wen Xiao Zheng
by artist: Klaus-Dieter Barandt
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popularity: 7
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genre: classical-era
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genre: opera
genre: chamber-music
genre: concerto
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71000023
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe548bfeb4ed2ca461dd832823ba487b3b7d7550d068ecd9eba912f533b958b64. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71000023 — a six-check JSON result.
  date published: 2026-07-06T01:25:57Z
audio: Ich Liebe Dich WoO 123
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Piano Quintet in E Major, Op. 15: I. Mäßiges Zeitmaß, mit schwungvoll blühendem Ausdruck
type: MusicRecording
duration: PT11M11S
duration ms: 671453
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Spectrum Concerts Berlin
by artist: Boris Brovtsyn
by artist: Clara Jumi Kang
by artist: Gareth Lubbe
by artist: Torleif Thedéen
by artist: Eldar Nebolsin
in album: Korngold: Suite, Op. 23 & Piano Quintet, Op. 15
  type: MusicAlbum
  date published: 2020-11-13
popularity: 5
genre: early-modern-classical
genre: classic-soundtrack
isrc code: HKI192015606
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192015606
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28340c93ea23836efd2f1d15aab3d2169abb817bf6331dd6393f4491c9d230af. 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/HKI192015606 — a six-check JSON result.
  date published: 2026-07-30T06:39:12Z
audio: Piano Quintet in E Major, Op. 15: I. Mäßiges Zeitmaß, mit schwungvoll blühendem Ausdruck
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Piano Quintet in E Major, Op. 15: II. Adagio. Mit größter Ruhe, stets äußerst gebunden und ausdrucksvoll
type: MusicRecording
duration: PT11M43S
duration ms: 703866
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Spectrum Concerts Berlin
by artist: Boris Brovtsyn
by artist: Clara Jumi Kang
by artist: Gareth Lubbe
by artist: Torleif Thedéen
by artist: Eldar Nebolsin
in album: Korngold: Suite, Op. 23 & Piano Quintet, Op. 15
  type: MusicAlbum
  date published: 2020-11-13
popularity: 5
genre: early-modern-classical
genre: classic-soundtrack
isrc code: HKI192015607
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192015607
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:06:10Z
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4eba9df53a2c848c6cb8c8ed799a913f12aa0998e9d20b61b17ac3a14ee561. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HKI192015607 — a six-check JSON result.
  date published: 2026-07-30T12:06:10Z
audio: Piano Quintet in E Major, Op. 15: II. Adagio. Mit größter Ruhe, stets äußerst gebunden und ausdrucksvoll
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  additional property: Loudness (dB)
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  additional property: Mode Name
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Suite, Op. 23: III. Groteske. Möglichst rasch
type: MusicRecording
duration: PT9M4S
duration ms: 544506
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Spectrum Concerts Berlin
by artist: Boris Brovtsyn
by artist: Clara Jumi Kang
by artist: Torleif Thedéen
by artist: Eldar Nebolsin
in album: Korngold: Suite, Op. 23 & Piano Quintet, Op. 15
  type: MusicAlbum
  date published: 2020-11-13
popularity: 4
genre: early-modern-classical
genre: classic-soundtrack
isrc code: HKI192015603
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960485
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192015603
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T00:10:46Z
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 0x157a735ff0193160191e5681072eee777e7f4e277305513261ba9b5f2edc9602. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/HKI192015603 — a six-check JSON result.
  date published: 2026-08-01T00:10:46Z
audio: Suite, Op. 23: III. Groteske. Möglichst rasch
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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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: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Piano Quintet in E Major, Op. 15: III. Finale. Gemessen beinahe pathetisch
type: MusicRecording
duration: PT7M49S
duration ms: 469853
explicit: false
by artist: Erich Wolfgang Korngold
by artist: Spectrum Concerts Berlin
by artist: Boris Brovtsyn
by artist: Clara Jumi Kang
by artist: Gareth Lubbe
by artist: Torleif Thedéen
by artist: Eldar Nebolsin
in album: Korngold: Suite, Op. 23 & Piano Quintet, Op. 15
  type: MusicAlbum
  date published: 2020-11-13
popularity: 4
genre: early-modern-classical
genre: classic-soundtrack
isrc code: HKI192015608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T11:43:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x853d2cd6a29b513764d8fee9228efc101e16230000602b4fbfdf0463f5536672
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/HKI192015608
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 0x853d2cd6a29b513764d8fee9228efc101e16230000602b4fbfdf0463f5536672. 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/HKI192015608 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Piano Quintet in E Major, Op. 15: III. Finale. Gemessen beinahe pathetisch
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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Erlkönig D 328
type: MusicRecording
duration: PT4M9S
duration ms: 249613
explicit: false
by artist: Franz Schubert
by artist: Sumi Jo
by artist: Suyoen Kim
by artist: Clara Jumi Kang
by artist: Wen Xiao Zheng
by artist: Klaus-Dieter Barandt
by artist: Minje Sung
in album: Ich Liebe Dich
  type: MusicAlbum
  date published: 2010-01-01
popularity: 4
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: KRUM71000026
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:24:36+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x7899f08b10d51f55301c38e2a870b37cf6e24a83b42615e38a5219b1fc111424
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/KRUM71000026
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 0x7899f08b10d51f55301c38e2a870b37cf6e24a83b42615e38a5219b1fc111424. 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/KRUM71000026 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Erlkönig D 328
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Mode Name
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Auf dem Wasser zu Singen D 774
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duration: PT3M27S
duration ms: 207773
explicit: false
by artist: Franz Schubert
by artist: Sumi Jo
by artist: Clara Jumi Kang
by artist: Klaus-Dieter Barandt
by artist: Christopher Park
in album: Ich Liebe Dich
  type: MusicAlbum
  date published: 2010-01-01
popularity: 4
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: KRUM71000029
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-07-30T07:38:52+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRUM71000029
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T07:48:45Z
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 0xed8b0a7e63814818f619aa8b0d17cc89713db9060489325f1b2ea7a05b9e9104. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/KRUM71000029 — a six-check JSON result.
  date published: 2026-07-30T07:48:45Z
audio: Auf dem Wasser zu Singen D 774
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  additional property: Musical Key
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Myrthen, op.25: Widmung
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  date published: 2026-07-29T13:09:35Z
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3 Romances For Violin And Piano, Op. 22: 3. Leidenschaftlich schnell
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Suite, Op. 23: I. Präludium und Fuge. Kräftig und bestimmt
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
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Schwanengesang, D. 957: No. 4, Ständchen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Heidenröslein D257
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subject of: OpenTimestamps Proof of Existence
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3 Romances For Violin And Piano, Op. 22: 1. Andante molto
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3 Romances For Violin And Piano, Op. 22: 2. Allegretto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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Suite, Op. 23: II. Walzer. Nicht schnell, anmutig
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by artist: Spectrum Concerts Berlin
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
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Suite, Op. 23: V. Rondo. Finale
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:20:15Z
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Sehnsucht nach dem Frühlinge KV 596
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duration ms: 77160
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by artist: Sumi Jo
by artist: Suyoen Kim
by artist: Wen Xiao Zheng
by artist: Clara Jumi Kang
by artist: Klaus-Dieter Barandt
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popularity: 2
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Sehnsucht nach dem Frühlinge KV 596
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Wiegenlied KV 350
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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