Norwegian Chamber Orchestra
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followers: 1
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-17T08:10:43Z
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track: Haydn: Piano Concerto in D Major, Hob. XVIII:11: I. Vivace
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  by artist: Joseph Haydn
  by artist: Leif Ove Andsnes
  by artist: Norwegian Chamber Orchestra
  in album: The Very Best of: Leif Ove Andsnes
    type: MusicAlbum
    date published: 2011-06-06
  isrc code: GBAYC9803234
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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
  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3dbc18b2aca638f2bca3366e8e21801b7467d38587c8f6190bdfe4651bfd99. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9803234.
    date published: 2026-07-08T03:53:27Z
  audio: Haydn: Piano Concerto in D Major, Hob. XVIII:11: I. Vivace
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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track: Haydn: Piano Concerto in D Major, Hob. XVIII:11: II. Un poco adagio

Haydn: Piano Concerto in D Major, Hob. XVIII:11: II. Un poco adagio
type: MusicRecording
duration: PT6M28S
duration ms: 388213
explicit: false
by artist: Joseph Haydn
by artist: Leif Ove Andsnes
by artist: Norwegian Chamber Orchestra
in album: The Very Best of: Leif Ove Andsnes
  type: MusicAlbum
  date published: 2011-06-06
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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: 2026-07-07T11:02:43Z
audio: Haydn: Piano Concerto in D Major, Hob. XVIII:11: II. Un poco adagio
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