Herman Wallen
type: MusicGroup
genre: opera
popularity: 27
followers: 70
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T19:24:56Z
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album: Grieg & Mahler : Songs with Orchestra
  type: MusicAlbum
  date published: 2004-05-06
track: La traviata / Act I: "Libiamo ne'lieti calici"

La traviata / Act I: "Libiamo ne'lieti calici"
type: MusicRecording
duration: PT3M5S
duration ms: 185480
explicit: false
by artist: Giuseppe Verdi
by artist: Rolando Villazón
by artist: Anna Netrebko
by artist: Helene Schneiderman
by artist: Herman Wallen
by artist: Salvatore Cordella
by artist: Paul Gay
by artist: Wiener Philharmoniker
by artist: Carlo Rizzi
by artist: Wiener Staatsopernchor
in album: Anna - The Best of Anna Netrebko
  type: MusicAlbum
  date published: 2009-01-01
genre: classical
genre: opera
isrc code: DEN960531303
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ad03b30223b850ae826376f3fd49c88419a340930f06263a38f6de3b408358. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEN960531303.
  date published: 2026-07-06T07:53:57Z
audio: La traviata / Act I: "Libiamo ne'lieti calici"
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  additional property: Danceability
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