Radio Symphony Orchestra Ljubljana Choir
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-15T22:51:00Z
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track: Requiem in D Minor, K. 626: III. Sequentia "Dies irae"

Requiem in D Minor, K. 626: III. Sequentia "Dies irae"
type: MusicRecording
duration: PT2M3S
duration ms: 123346
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Radio Symphony Orchestra Ljubljana
by artist: Vladislav Tscherneshenko
by artist: Radio Symphony Orchestra Ljubljana Choir
in album: Top 100 Power Classics: The Most Dynamic Classical Music of All Time
  type: MusicAlbum
  date published: 2013-12-03
genre: classical
genre: classical-era
isrc code: US4R31347531
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Requiem in D Minor, K. 626: III. Sequentia "Dies irae"
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  additional property: Key Name
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