Hans-Peter Sorger
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  date published: 2026-06-19T03:51:26Z
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track: Guten Abend, gut' Nacht

Guten Abend, gut' Nacht
type: MusicRecording
duration: PT1M14S
duration ms: 74493
explicit: false
by artist: Johannes Brahms
by artist: Hans-Peter Sorger
in album: Baby Klassik
  type: MusicAlbum
  date published: 2012-07-02
genre: classical
genre: german-romanticism
genre: late-romantic-era
isrc code: DEE861200100
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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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2855c551a5e798c5d5851c55034f0ca01edb223106c39bbd1249fbd1e21a269. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE861200100.
  date published: 2026-07-02T11:38:34Z
audio: Guten Abend, gut' Nacht
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  additional property: Key Name
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