Choralschola
type: MusicGroup
genre: gregorian chant
genre: medieval
description: thumb|upright=1.3|Choralschola A Choralschola, known simply as schola, is a choir for singing Gregorian chant or plainsong. It consists traditionally of only men, but more recent groups sometimes als
popularity: 13
followers: 151
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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: 2026-06-14T14:31:42Z
album: NPR Milestones of the Millennium: CHANT - Hymns and Sequences - Gloria in excelsis Deo
  type: MusicAlbum
  date published: 1980
  track: Ut queant laxis (Hymn to St. John the Baptist)
    type: MusicRecording
    duration: PT0M38S
    duration ms: 38466
    explicit: false
    by artist: Traditional
    by artist: Konrad Ruhland
    by artist: Capella Antiqua München
    by artist: Choralschola
    in album: NPR Milestones of the Millennium: CHANT - Hymns and Sequences - Gloria in excelsis Deo
      type: MusicAlbum
      date published: 1980
    popularity: 3
    genre: bhajan
    genre: gregorian-chant
    genre: medieval
    genre: traditional-music
    isrc code: USSM17800124
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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
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c75daef944e1968a2315336a52703ff1f425f5d84fead2649a49e0aa31c327. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM17800124 — a six-check JSON result.
      date published: 2026-07-06T06:56:49Z
    audio: Ut queant laxis (Hymn to St. John the Baptist)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
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      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 6
      additional property: Danceability
        type: PropertyValue
        value: 0.297
      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
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        value: 0.963
      additional property: Instrumentalness
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      additional property: Liveness
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        value: 0.114
      additional property: Valence (Positivity)
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        value: 0.226
      additional property: Loudness (dB)
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      additional property: Key Name
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        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major