Kaleidoscope Chamber Collective
type: MusicGroup
genre: chamber music
popularity: 9
followers: 444
additional property: CopyrightID
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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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc912e0078027ed43133702b857bd994b991f440d809a7a56f79f07162664114e. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b316ad50-80eb-4391-8f87-d24ce17b4148.json and https://artists.proofprofile.net/proofs/artist/b316ad50-80eb-4391-8f87-d24ce17b4148.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
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album: American Quintets
  type: MusicAlbum
  date published: 2021-05-28
album: American Quintets
  type: MusicAlbum
  date published: 2021-05-28
album: American Quintets
  type: MusicAlbum
  date published: 2021-06-01
album: Fanny & Felix Mendelssohn: Piano Sextet, Piano Quartet, Piano Trio
  type: MusicAlbum
  date published: 2022-07-29
  track: Trio in D Minor, Op. 11: III. Lied
    type: MusicRecording
    duration: PT1M53S
    duration ms: 113000
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    by artist: Kaleidoscope Chamber Collective
    in album: Fanny & Felix Mendelssohn: Piano Sextet, Piano Quartet, Piano Trio
      type: MusicAlbum
      date published: 2022-07-29
    genre: chamber music
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79a3507e3ea6a15981c1eccecd3ea7193b76c30f7d2984307380ecc6a37a182. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD2203207.
      date published: 2026-07-03T19:59:51Z
    audio: Trio in D Minor, Op. 11: III. Lied
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.803
      additional property: Liveness
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      additional property: Valence (Positivity)
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        value: 0.19
      additional property: Loudness (dB)
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        value: -29.724
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Fanny & Felix Mendelssohn: Piano Sextet, Piano Quartet, Piano Trio
  type: MusicAlbum
  date published: 2022-07-29
album: Transfigured
  type: MusicAlbum
  date published: 2023-07-28
album: Transfigured
  type: MusicAlbum
  date published: 2023-09-15
album: Many Voices: Ensemble
  type: MusicAlbum
  date published: 2023-10-27
album: Brahms & Contemporaries, Vol. 1
  type: MusicAlbum
  date published: 2024-05-24
album: Brahms & Contemporaries, Vol. 1
  type: MusicAlbum
  date published: 2024-05-24
album: Brahms & Contemporaries, Vol. 2
  type: MusicAlbum
  date published: 2025-05-09