Jeanne Deroubaix
type: MusicGroup
genre: avant-garde
genre: medieval
description: Jeanne Deroubaix (born 15 February 1927) is a Belgian mezzo-soprano, focused on concert performances of early music and contemporary music. She premiered music by Igor Stravinsky and collaborated with
popularity: 2
followers: 14
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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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  date published: 2026-06-16T07:53:13Z
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track: Organum duplum: Judaea et Jerusalem
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  by artist: Léonin
  by artist: Elisabeth Verlooy
  by artist: Jeanne Deroubaix
  by artist: Rene Letroye
  by artist: Franz Mertens
  by artist: Willy Pourtois
  by artist: Pro Musica Antiqua
  by artist: Safford Cape
  in album: Leonin:Organum Duplum / Perotin: Organum Quadruplum / Machaut: Messe de Nostre Dame / Dufay: 5 Sacred Songs
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    date published: 1996-01-01
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  additional property: OTSTimestamp
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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: 2026-07-29T21:13:37Z
  audio: Organum duplum: Judaea et Jerusalem
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Organum quadruplum
  type: MusicRecording
  duration: PT14M56S
  duration ms: 896000
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  by artist: Pérotin
  by artist: Elisabeth Verlooy
  by artist: Jeanne Deroubaix
  by artist: Rene Letroye
  by artist: Franz Mertens
  by artist: Willy Pourtois
  by artist: Pro Musica Antiqua
  by artist: Safford Cape
  in album: Leonin:Organum Duplum / Perotin: Organum Quadruplum / Machaut: Messe de Nostre Dame / Dufay: 5 Sacred Songs
    type: MusicAlbum
    date published: 1996-01-01
  genre: gregorian-chant
  genre: medieval
  isrc code: DEF055604010
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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: 2026-07-08T03:20:19Z
  audio: Organum quadruplum
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    additional property: Valence (Positivity)
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Speechiness
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Acousticness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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