Girolamo Cavazzoni
type: MusicGroup
description: Girolamo (Hieronimo) Cavazzoni (c. 1525 – after 1577) was an Italian organist and composer, son of Marco Antonio Cavazzoni. Little is known about his life except that he worked at Venice and Mantua, a
popularity: 3
followers: 211
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additional property: CopyrightChainExplorerURL
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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: 2026-06-17T08:11:48Z
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album: Cavazzoni: Complete Organ Music
  type: MusicAlbum
  date published: 2021-07-30
  track: Hymnus Ad Coenam Agni Provide
    type: MusicRecording
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    duration ms: 125054
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    by artist: Girolamo Cavazzoni
    by artist: Sordo Federico del
    by artist: Nova Schola Gregoriana
    by artist: Turco Alberto
    in album: Cavazzoni: Complete Organ Music
      type: MusicAlbum
      date published: 2021-07-30
    popularity: 1
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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: 2026-07-08T03:20:19Z
    audio: Hymnus Ad Coenam Agni Provide
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      additional property: Key Name
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