Jacek Koman
type: MusicGroup
genre: musicals
genre: tango
description: Jacek Koman (born 15 August 1956) is a Polish actor and singer. Early life Koman was born in Bielsko-Biała, Poland, to actors Halina Koman (née Dobrowolska; born 3 January 1923) and Adam Koman (24 De
popularity: 44
followers: 954
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:28:13Z
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track: El Tango De Roxanne - From "Moulin Rouge" Soundtrack
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  duration: PT4M43S
  duration ms: 283933
  explicit: false
  by artist: José Feliciano
  by artist: Ewan McGregor
  by artist: Jacek Koman
  in album: Moulin Rouge
    type: MusicAlbum
    date published: 2001-09-03
  popularity: 54
  isrc code: USIR10110330
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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
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    date published: 2026-06-13T12:47:07Z
  audio: El Tango De Roxanne - From "Moulin Rouge" Soundtrack
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    additional property: Musical Key
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    additional property: Speechiness
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    additional property: Acousticness
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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
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