Mieczysław Kosz
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genre: jazz
popularity: 14
followers: 3649
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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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  date published: 2026-06-14T21:42:01Z
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album: Reminiscence (Polish Jazz, Vol. 25)
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  date published: 1971-03-31
album: Polish Radio Jazz Archives 10 - Mieczyslaw Kosz Piano Solo
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  date published: 2013-11-04
album: Piano Solo - Polish Radio Jazz Archives, Vol. 10
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  date published: 2013-11-04
  track: Satin Dol
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    by artist: Mieczysław Kosz
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      type: MusicAlbum
      date published: 2013-11-04
    genre: jazz
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    additional property: OTSVerifyInstructions
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    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2c4783d0959afc71c401a75cb3bbc489c9360af47f2e7b20fcb17a7e66ac8b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLA391362901.
      date published: 2026-07-21T03:51:22Z
    audio: Satin Dol
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  track: Przed Burzą
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    by artist: Mieczysław Kosz
    in album: Piano Solo - Polish Radio Jazz Archives, Vol. 10
      type: MusicAlbum
      date published: 2013-11-04
    genre: jazz
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    additional property: OTSVerifyInstructions
      type: PropertyValue
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    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      date published: 2026-07-16T00:11:42Z
    audio: Przed Burzą
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album: Polish Radio Jazz Archives, Vol..37, Mieczysław Kosz Solo, Duo, Trio, Vol. 2
album: Israel
album: Debiut. Jazz Jamboree '67/'68
album: Sygnały (Remastered)
album: Sygnały. Trio '68

Liveness
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Key Name
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Mode Name
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Polish Radio Jazz Archives, Vol..37, Mieczysław Kosz Solo, Duo, Trio, Vol. 2
type: MusicAlbum
date published: 2023

Israel
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date published: 2024-11-26

Debiut. Jazz Jamboree '67/'68
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date published: 2024-12-06
track: Preludium c-moll op. 28
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  by artist: Mieczysław Kosz
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    type: MusicAlbum
    date published: 2024-12-06
  genre: jazz
  isrc code: PLA392400152
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-17T03:30:15Z
  audio: Preludium c-moll op. 28
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Sygnały (Remastered)
type: MusicAlbum
date published: 2025-05-13

Sygnały. Trio '68
type: MusicAlbum
date published: 2025-05-30