Kammerchor der Salzburger Festspiele
type: MusicGroup
genre: opera
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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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 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4d33ba445d2bf6ced61b46e3b6ecaa37c2ddb842ee21c78100fef88f29f08a. Chain 2 (Bitcoin): anchored in block 954028 (2026-06-17T01:08:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39a07cc1-6eb0-43e4-8f06-50f1e83463d0.json and https://artists.proofprofile.net/proofs/artist/39a07cc1-6eb0-43e4-8f06-50f1e83463d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:08:06Z
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track: Il trovatore, Act III: Di quella pira - Live at Großes Festspielhaus, Salzburg, 1962
  type: MusicRecording
  duration: PT2M28S
  duration ms: 148493
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Franco Corelli
  by artist: Siegfried Rudolf Frese
  by artist: Wiener Philharmoniker
  by artist: Herbert von Karajan
  by artist: Wiener Staatsopernchor
  by artist: Kammerchor der Salzburger Festspiele
  in album: Verdi: Il Trovatore (2 CDs)
    type: MusicAlbum
    date published: 1995-01-01
  genre: classical
  genre: opera
  isrc code: DEF056231523
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650269549cdda71a90ca84e29fcccc5adf44c70759aa9b767b96804e5e1048d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEF056231523.
    date published: 2026-07-08T03:20:19Z
  audio: Il trovatore, Act III: Di quella pira - Live at Großes Festspielhaus, Salzburg, 1962
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 115.124
    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
      value: 0.856
    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.885
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
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track: Il trovatore, Act I: All'erta! all'erta! - Live at Großes Festspielhaus, Salzburg, 1962
  type: MusicRecording
  duration: PT2M43S
  duration ms: 163866
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Nicola Zaccaria
  by artist: Wiener Philharmoniker
  by artist: Herbert von Karajan
  by artist: Wiener Staatsopernchor
  by artist: Kammerchor der Salzburger Festspiele
  by artist: Roberto Benaglio
  in album: Karajan A-Z: Verdi - Vivaldi
    type: MusicAlbum
    date published: 2024-04-26
  genre: classical
  genre: opera
  isrc code: DEF056231501
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9b1607ae91c3ce4f36e640c7c6a23711fda58960cecb89a09f720cd810c47a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEF056231501.
    date published: 2026-07-31T13:04:34Z
  audio: Il trovatore, Act I: All'erta! all'erta! - Live at Großes Festspielhaus, Salzburg, 1962
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 150.716
    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Acousticness
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value: 0.962

Instrumentalness
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value: 0

Liveness
type: PropertyValue
value: 0.423

Valence (Positivity)
type: PropertyValue
value: 0.144

Loudness (dB)
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value: -27.78

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor