Chor der Kölner Akademie
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followers: 25
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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
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  date published: 2026-06-16T22:46:20Z
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album: Hertel: Der sterbende Heiland
  type: MusicAlbum
  date published: 2014-05-06
album: Hertel: Die Geburt Jesu Christi
  type: MusicAlbum
  date published: 2013-11-19
album: Telemann: Komm wieder, Herr, zu der Menge der Tausenden in Israel, TWV 2:12
  type: MusicAlbum
  date published: 2019-03-15
album: Telemann: Christmas Oratorios
  type: MusicAlbum
  date published: 2019-01-04
album: Mozart: Masonic Works – Cantatas & Funeral Music
  type: MusicAlbum
  date published: 2018-03-02
  track: Laut verkünde unsre Freude, K. 623: I. Laut verkünde unsre Freude
  track: Zerfliesset heut', geliebte Brüder, K. 483
album: Homilius, Stölzel & Rolle: Christmas Cantatas
  type: MusicAlbum
  date published: 2017-01-20
album: Rolle: Matthäuspassion
  type: MusicAlbum
  date published: 2016-04-29
album: Wolf: Passionsoratorium "Jesu, deine Passion will ich jetzt bedenken"
  type: MusicAlbum
  date published: 2018-06-15
album: Telemann: St. Luke Passion
  type: MusicAlbum
  date published: 2013-04-30

Laut verkünde unsre Freude, K. 623: I. Laut verkünde unsre Freude
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duration: PT3M15S
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by artist: Wolfgang Amadeus Mozart
by artist: John Heuzenroeder
by artist: David Geier
by artist: Mauro Borgioni
by artist: Chor der Kölner Akademie
by artist: Orchester der Kölner Akademie
by artist: Michael Alexander Willens
in album: Mozart: Masonic Works – Cantatas & Funeral Music
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  date published: 2018-03-02
genre: classical
genre: classical-era
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Laut verkünde unsre Freude, K. 623: I. Laut verkünde unsre Freude
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Zerfliesset heut', geliebte Brüder, K. 483
type: MusicRecording
duration: PT2M13S
duration ms: 133600
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: John Heuzenroeder
by artist: Chor der Kölner Akademie
by artist: Willi Kronenberg
by artist: Michael Alexander Willens
in album: Mozart: Masonic Works – Cantatas & Funeral Music
  type: MusicAlbum
  date published: 2018-03-02
genre: classical
genre: classical-era
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  date published: 2026-07-31T16:33:26Z
audio: Zerfliesset heut', geliebte Brüder, K. 483
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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 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