Smetana Trio
type: MusicGroup
genre: chamber music
popularity: 17
followers: 425
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additional property: OTSBitcoinBlockVerifyURL
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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 0x10f8e44008b1d4c3ece3e3f407d07e752a59aff6c9aac9f33e72721571cf7a57. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f696d4d0-85dc-40b0-ae82-effcb2008d3b.json and https://artists.proofprofile.net/proofs/artist/f696d4d0-85dc-40b0-ae82-effcb2008d3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T17:06:52Z
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album: Smetana: Piano Trio in G Minor - Dvořák: Piano Trio "Dumky"
  type: MusicAlbum
  date published: 2000-02-09
album: Smetana: Piano Trio in G minor, Dvorak: Piano Trio "Dumky"
  type: MusicAlbum
  date published: 2000-02-09
album: Smetana / Suk / Novak: Piano Trios
  type: MusicAlbum
  date published: 2005-04-25
album: Smetana, Suk and Novák: Piano Trios
  type: MusicAlbum
  date published: 2005-04-25
album: Dvorak, Fibich & Martinu: Piano Trios
  type: MusicAlbum
  date published: 2007-01-01
album: Dvořák, Fibich and Martinů: Piano Trios
  type: MusicAlbum
  date published: 2007-07-20
album: Beethoven - Voříšek: Triple Concertos
  type: MusicAlbum
  date published: 2008-03-01
album: Tchaikovsky & Dvorak: Piano Trios
  type: MusicAlbum
  date published: 2008-08-08
album: Tchaikovsky and Dvořák: Piano Trios
  type: MusicAlbum
  date published: 2008-08-08
album: Mendelssohn and Schubert: Piano Trios
  type: MusicAlbum
  date published: 2010-03-12
album: Ravel and Shostakovich: Piano Trios
  type: MusicAlbum
  date published: 2014-03-21
  track: Piano Trio in A Minor, M. 67: III. Passacaille. Très large
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    by artist: Smetana Trio
    in album: Ravel and Shostakovich: Piano Trios
      type: MusicAlbum
      date published: 2014-03-21
    genre: chamber music
    isrc code: CZA161304302
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e8b4b74eb5ef1e6a11f18c102238458f340e0843d84219ead966557286b642. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA161304302.
      date published: 2026-07-17T01:03:05Z
    audio: Piano Trio in A Minor, M. 67: III. Passacaille. Très large
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.367
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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        value: 0.08
      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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        value: 0.977
      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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        value: 0.058
      additional property: Loudness (dB)
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        value: -29.752
      additional property: Key Name
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        value: F#
      additional property: Mode Name
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        value: Minor
album: Reicha, Mendelssohn, Smetana: Works for Piano Trio
  type: MusicAlbum
  date published: 2016-03-21
album: Zemlinsky, Rachmaninov, Arensky: Piano Trios
  type: MusicAlbum
  date published: 2019-03-29