Cologne Radio Orchestra
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genre: opera
popularity: 15
followers: 228
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T05:36:59Z
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album: Verdi, G.: Opera Arias
  type: MusicAlbum
  date published: 1999-01-01
track: Das ist der Fruhling von Berlin

Das ist der Fruhling von Berlin
type: MusicRecording
duration: PT2M15S
duration ms: 135000
explicit: false
by artist: Walter Kollo
by artist: Willi Kollo
by artist: Hermann Prey
by artist: Wannsee-Sanger
by artist: Cologne Radio Orchestra
by artist: Heinz Geese
in album: Ich sing mein schonstes Lied
  type: MusicAlbum
  date published: 2010-08-01
popularity: 14
genre: operetta
isrc code: USB8U1010274
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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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Das ist der Fruhling von Berlin
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