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type: MusicGroup
genre: classical
genre: opera
popularity: 18
followers: 250
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eefbd744-8d7a-4c3e-94d2-bf179df990f9.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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 0x350f8fe05c8717152bd76339328cb3381a4ea68bae9c754b283892b69a5ae984. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eefbd744-8d7a-4c3e-94d2-bf179df990f9.json and https://artists.proofprofile.net/proofs/artist/eefbd744-8d7a-4c3e-94d2-bf179df990f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
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album: Verdi: Alzira
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  date published: 2001-01-01
  track: Alzira: Overture (Sinfonia)
    type: MusicRecording
    duration: PT6M12S
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    by artist: Giuseppe Verdi
    by artist: Orchestre de la Suisse Romande
    by artist: Fabio Luisi
    in album: Verdi: Alzira
      type: MusicAlbum
      date published: 2001-01-01
    genre: classical
    genre: opera
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBB9900301
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T23:30:38Z
    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 0xe40184d427d11992739a24bb21a94796c497bf8ba2381427049c06279e202665. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBBBB9900301.
      date published: 2026-07-31T23:30:38Z
    audio: Alzira: Overture (Sinfonia)
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  track: Alzira / Prologue: Un Inca
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    duration: PT5M33S
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    by artist: Ramón Vargas
    by artist: Torsten Kerl
    by artist: Choeur Du Grand Theatre De Geneve
    by artist: Orchestre de la Suisse Romande
    by artist: Fabio Luisi
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      type: MusicAlbum
      date published: 2001-01-01
    genre: classical
    genre: opera
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
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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
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      date published: 2026-07-30T05:43:45Z
    audio: Alzira / Prologue: Un Inca
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      additional property: Valence (Positivity)
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  track: Alzira / Act 1: Da Gusman
  track: Alzira / Act 1: Che fia?
album: Hindemith: Cardillac, Op. 39 (Live)
album: Mozart: Don Giovanni (Highlights)
album: Mozart: Don Giovanni
album: Wiener Staatsoper Live: Nina Stemme Sings Wagner
album: Don Carlo - Trovatore - Otello - Traviata - Puritani - Giuramento - Bohème - Tosca - Fanciulla del West - Andrea Chénier - Pagliacci - Prophète
album: Wagner: Tannhäuser, WWV 70 (Live)
album: Great Opera
album: Thrilling Tenor: Best Loved Opera Arias
album: Opera - 50 of the Best
album: The Ultimate Mozart Opera Album
album: A Guided Tour of the Classical Era, Vol. 2
album: Mahler: Das klagende Lied
album: The Best of Michael Halász
album: Discover Music of the Classical Era
album: Starke Stücke. Wolfgang Amadeus Mozart. Don Giovanni
album: The Naxos Mozart Album **
album: Vocal Recital: Kerl, Torsten - Beethoven / Weber, C. / Wagner / Strauss, R. / Korngold
album: Moses

Acousticness
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value: 0.964

Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
type: PropertyValue
value: Major

Alzira / Act 1: Da Gusman
type: MusicRecording
duration: PT7M1S
duration ms: 421240
explicit: false
by artist: Giuseppe Verdi
by artist: Marina Mescheriakova
by artist: Jana Iliev
by artist: Choeur Du Grand Theatre De Geneve
by artist: Orchestre de la Suisse Romande
by artist: Fabio Luisi
in album: Verdi: Alzira
  type: MusicAlbum
  date published: 2001-01-01
genre: classical
genre: opera
isrc code: GBBBB9900309
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89e34aaec615aea42f87782ea2c7a0dd84732518690082d1db090c41d7130cc. 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/GBBBB9900309.
  date published: 2026-07-08T03:20:19Z
audio: Alzira / Act 1: Da Gusman
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  additional property: Tempo (BPM)
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  additional property: Valence (Positivity)
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Alzira / Act 1: Che fia?
type: MusicRecording
duration: PT4M30S
duration ms: 270866
explicit: false
by artist: Giuseppe Verdi
by artist: Marina Mescheriakova
by artist: Ramón Vargas
by artist: Orchestre de la Suisse Romande
by artist: Fabio Luisi
in album: Verdi: Alzira
  type: MusicAlbum
  date published: 2001-01-01
genre: classical
genre: opera
isrc code: GBBBB9900311
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBBB9900311
additional property: OTSTimestamp
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e28d667f21a0f40ca7a1dc7f9ab72660a431f3e42145a901a2890c9556ddf51. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBBBB9900311.
  date published: 2026-07-30T09:57:33Z
audio: Alzira / Act 1: Che fia?
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Hindemith: Cardillac, Op. 39 (Live)
type: MusicAlbum
date published: 2023-07-07

Mozart: Don Giovanni (Highlights)
type: MusicAlbum
date published: 2006-04-18
track: Don Giovanni, K. 527: Act II Scene 15: Don Giovanni, a cenar teco (Il Commendatore, Don Giovanni, Leporello, Chorus)
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  by artist: Bo Skovhus
  by artist: Janusz Monarcha
  by artist: Adrianne Pieczonka
  by artist: Torsten Kerl
  by artist: Regina Schorg
  by artist: Renato Girolami
  by artist: Boaz Daniel
  by artist: Ildiko Raimondi
  by artist: Hungarian Radio Chorus
  by artist: Nicolaus Esterhazy Sinfonia
  by artist: Michael Halasz
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    date published: 2006-04-18
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190136514
  additional property: OTSTimestamp
    type: PropertyValue
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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 0xbf627f97f5a968fecf7ee65565414bf36a8e974e5c5c26ce0bf897c7e266d83d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKI190136514.
    date published: 2026-07-31T12:24:41Z
  audio: Don Giovanni, K. 527: Act II Scene 15: Don Giovanni, a cenar teco (Il Commendatore, Don Giovanni, Leporello, Chorus)
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Mozart: Don Giovanni
type: MusicAlbum
date published: 2001-12-05

Wiener Staatsoper Live: Nina Stemme Sings Wagner
type: MusicAlbum
date published: 2017-11-17

Don Carlo - Trovatore - Otello - Traviata - Puritani - Giuramento - Bohème - Tosca - Fanciulla del West - Andrea Chénier - Pagliacci - Prophète
type: MusicAlbum
date published: 2016-01-01

Wagner: Tannhäuser, WWV 70 (Live)
type: MusicAlbum
date published: 2018-07-27
track: Tannhäuser, WWV 70, Act I: Overture (Live)
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  by artist: Bayreuth Festival Orchestra
  by artist: Axel Kober
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Thrilling Tenor: Best Loved Opera Arias
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Opera - 50 of the Best
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The Ultimate Mozart Opera Album
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A Guided Tour of the Classical Era, Vol. 2
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Mahler: Das klagende Lied
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The Best of Michael Halász
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Discover Music of the Classical Era
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Starke Stücke. Wolfgang Amadeus Mozart. Don Giovanni
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The Naxos Mozart Album **
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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 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
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    date published: 2026-07-31T16:07:24Z
  audio: Die tote Stadt, Op. 12, Act III: O Freund, ich werde sie nicht wiedersehen
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Moses
type: MusicAlbum
date published: 2018-08-31

Discover Music of the Classical Era
type: MusicAlbum
date published: 2005-10-01