Sospiri
type: MusicGroup
genre: choral
genre: medieval
description: Sospiri, Op. 70, is an adagio for string orchestra, harp (or piano), and organ (or harmonium) composed by Edward Elgar just before and performed just after the beginning of World War I. Elgar origina
popularity: 6
followers: 113
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-17T08:11:48Z
album: Requiem
  type: MusicAlbum
  date published: 2010-10-01
album: Requiem
  type: MusicAlbum
  date published: 2010-10-01
album: The Lost City: Lamentations Through the Ages
  type: MusicAlbum
  date published: 2013-04-02
  track: Wie liegt die Stadt so wust
    type: MusicRecording
    duration: PT6M34S
    duration ms: 394400
    explicit: false
    by artist: Sospiri
    in album: The Lost City: Lamentations Through the Ages
      type: MusicAlbum
      date published: 2013-04-02
    genre: choral
    genre: medieval
    isrc code: HKI191264411
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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
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe200a3dafcd160ecba1766de54f199444d77303e3321ebecbd2878c782ffe9e1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKI191264411.
      date published: 2026-07-05T18:48:28Z
    audio: Wie liegt die Stadt so wust
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.725
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.132
      additional property: Energy
        type: PropertyValue
        value: 0.012
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.984
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.047
      additional property: Liveness
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        value: 0.094
      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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album: The Lost City: Lamentations Through the Ages
  type: MusicAlbum
  date published: 2013-04-02
album: A Multitude of Voices: WW1 Centenary in Choral Song
  type: MusicAlbum
  date published: 2014-11-01
album: A Multitude of Voices: WW1 Centenary in Choral Song
  type: MusicAlbum
  date published: 2014-11-01
album: A Multitude of Voices (WWI Centenary in Choral Songs)
  type: MusicAlbum
  date published: 2014-11-03