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genre: opera
description: thumb|Nadine Sierra in 2013 Nadine Sierra (born May 14, 1988) is an American soprano. She is best known for her interpretation of Gilda in Verdi's Rigoletto, and Lucia in Donizetti's Lucia di Lammermo
popularity: 33
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  track: La traviata / Act 1: Ah, fors’è lui
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  track: La traviata / Act 1: Follie! Delirio vano è questo!
  track: La traviata / Act 1: Sempre libera
  track: La traviata / Act 3: Addio del passato
  track: Lucia di Lammermoor / Act 1: Regnava nel silenzio
  track: Lucia di Lammermoor / Act 3: Ardon gl’incensi
  track: Lucia di Lammermoor / Act 3: Spargi d'amaro pianto
  track: Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
  track: Roméo et Juliette, CG 9 / Act 4: Dieu! Quel frisson court dans mes veines?
  track: Roméo et Juliette, CG 9 / Act 4: Amour, ranime mon courage
album: Verdi: La traviata (Live)
album: Lehár: Der Zarewitsch: Einer wird kommen (Musical Moments)
album: Puccini: La bohème, SC 67 / Act 1: Sì. Mi chiamano Mimì (Musical Moments)
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album: Foster: Beautiful Dreamer (Arr. Coughlin for Voice and Orchestra) [Musical Moments]
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Lakmé / Flower Duet: Dôme épais le jasmin ... Sous le dôme épais
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La traviata / Act 1: Follie! Delirio vano è questo!
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La traviata / Act 1: Sempre libera
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La traviata / Act 3: Addio del passato
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subject of: OpenTimestamps Proof of Existence
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audio: La traviata / Act 3: Addio del passato
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Lucia di Lammermoor / Act 1: Regnava nel silenzio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Lucia di Lammermoor / Act 1: Regnava nel silenzio
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Lucia di Lammermoor / Act 3: Ardon gl’incensi
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T07:16:32Z
audio: Lucia di Lammermoor / Act 3: Ardon gl’incensi
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Lucia di Lammermoor / Act 3: Spargi d'amaro pianto
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T18:39:05Z
audio: Lucia di Lammermoor / Act 3: Spargi d'amaro pianto
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Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:41:13Z
audio: Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
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Roméo et Juliette, CG 9 / Act 4: Dieu! Quel frisson court dans mes veines?
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:38:34Z
audio: Roméo et Juliette, CG 9 / Act 4: Dieu! Quel frisson court dans mes veines?
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Roméo et Juliette, CG 9 / Act 4: Amour, ranime mon courage
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audio: Roméo et Juliette, CG 9 / Act 4: Amour, ranime mon courage
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Verdi: La traviata (Live)
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track: La traviata, Act I: Dunque a te, un brindisi! (Live)
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  additional property: OTSBitcoinBlockVerifyURL
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24590c82bd84c98f7fa4df2b023b553d63c176cb6b7a620f38a0e19fc74670. 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/ITN322220660.
    date published: 2026-07-02T11:38:34Z
  audio: La traviata, Act I: Dunque a te, un brindisi! (Live)
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track: La traviata, Act I: Un dì, felice, eterea (Live)
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  by artist: Giuseppe Verdi
  by artist: Nadine Sierra
  by artist: Francesco Meli
  by artist: Orchestra del Maggio Musicale Fiorentino
  by artist: Zubin Mehta
  in album: Verdi: La traviata (Live)
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    date published: 2022-10-21
  popularity: 4
  genre: classical
  genre: opera
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531c92c213076321437533f32c476f657f6efb7a3413f93f5c49ef080eb0dc23. 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/ITN322220662.
    date published: 2026-07-02T11:38:34Z
  audio: La traviata, Act I: Un dì, felice, eterea (Live)
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track: La traviata, Act II: Annina, donde vieni? (Live)
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  by artist: Giuseppe Verdi
  by artist: Francesco Meli
  by artist: Caterina Meldolesi
  by artist: Orchestra del Maggio Musicale Fiorentino
  by artist: Zubin Mehta
  in album: Verdi: La traviata (Live)
    type: MusicAlbum
    date published: 2022-10-21
  popularity: 2
  genre: classical
  genre: opera
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  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: La traviata, Act II: Annina, donde vieni? (Live)
track: La traviata, Act II: Avrem lieta di maschere la notte (Live)
track: La traviata, Act III: Annina? (Live)
track: La traviata, Act III: Largo al quadrupede (Live)
track: La traviata, Act III: Parigi, o cara, noi lasceremo (Live)
track: La traviata, Act III: Ah, Violetta! (Live)

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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITN322220669

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1385fd4eb11944569c307a2d35f90e6c5d1af729d66fd27af0d7a5b16320f9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITN322220669.
date published: 2026-07-08T03:22:41Z

La traviata, Act II: Annina, donde vieni? (Live)
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Danceability
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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
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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La traviata, Act II: Avrem lieta di maschere la notte (Live)
type: MusicRecording
duration: PT4M17S
duration ms: 257165
explicit: false
by artist: Giuseppe Verdi
by artist: Caterina Piva
by artist: William Corrò
by artist: Emanuele Cordaro
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Coro del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: La traviata (Live)
  type: MusicAlbum
  date published: 2022-10-21
popularity: 1
genre: classical
genre: opera
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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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/ITN322220680
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3565522f751df1933e80d52f0ce04b11c213073f1e84a1684b4bd51947ae39d1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITN322220680.
  date published: 2026-07-08T08:56:20Z
audio: La traviata, Act II: Avrem lieta di maschere la notte (Live)
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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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
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La traviata, Act III: Annina? (Live)
type: MusicRecording
duration: PT7M52S
duration ms: 472433
explicit: false
by artist: Giuseppe Verdi
by artist: Nadine Sierra
by artist: Caterina Meldolesi
by artist: Emanuele Cordaro
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: La traviata (Live)
  type: MusicAlbum
  date published: 2022-10-21
popularity: 1
genre: classical
genre: opera
isrc code: ITN322220685
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITN322220685
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b5c203874c19217dd7fd6ae4910ee07e81188cfc70f421da67eb774b9db73. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITN322220685.
  date published: 2026-07-08T03:22:41Z
audio: La traviata, Act III: Annina? (Live)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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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)
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La traviata, Act III: Largo al quadrupede (Live)
type: MusicRecording
duration: PT2M34S
duration ms: 154666
explicit: false
by artist: Giuseppe Verdi
by artist: Francesco Meli
by artist: Caterina Meldolesi
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Coro del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: La traviata (Live)
  type: MusicAlbum
  date published: 2022-10-21
popularity: 1
genre: classical
genre: opera
isrc code: ITN322220688
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745263ad81bd866aaf480e6d7a4a4c60743e1b773e74ed3d82cfe48bf9da5e53. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITN322220688.
  date published: 2026-07-08T08:56:20Z
audio: La traviata, Act III: Largo al quadrupede (Live)
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Acousticness
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La traviata, Act III: Parigi, o cara, noi lasceremo (Live)
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duration: PT6M33S
duration ms: 393866
explicit: false
by artist: Giuseppe Verdi
by artist: Nadine Sierra
by artist: Francesco Meli
by artist: Orchestra del Maggio Musicale Fiorentino
by artist: Zubin Mehta
in album: Verdi: La traviata (Live)
  type: MusicAlbum
  date published: 2022-10-21
popularity: 1
genre: classical
genre: opera
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b761ea54d70b7e3066a4c60ee440cd93e993cc3d8e6a14c3fbe7394e872d1. 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/ITN322220689.
  date published: 2026-07-08T03:20:19Z
audio: La traviata, Act III: Parigi, o cara, noi lasceremo (Live)
  type: AudioObject
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La traviata, Act III: Ah, Violetta! (Live)
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by artist: Leo Nucci
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by artist: Zubin Mehta
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: La traviata, Act III: Ah, Violetta! (Live)
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Lehár: Der Zarewitsch: Einer wird kommen (Musical Moments)
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Puccini: La bohème, SC 67 / Act 1: Sì. Mi chiamano Mimì (Musical Moments)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-07T18:39:05Z
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Verdi: La traviata / Act 1: Sempre libera
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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Puccini: Le Villi, SC 60: Se come voi piccina io fossi (Musical Moments)
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date published: 2021-05-14

There's a Place for Us
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: West Side Story: Somewhere
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track: Songfest: No. 3 A Julia de Burgos
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:53:27Z
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track: Floresta do Amazonas, W551: No. 4 Melodia Sentimental
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track: Lúa Descolorida

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

Floresta do Amazonas, W551: No. 4 Melodia Sentimental
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Lúa Descolorida
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca81f95d6fc1c5f14e722d65a78fed8232cb9de45c900e31b09b3be969318c. 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/DEN961701710.
  date published: 2026-07-08T03:20:19Z
audio: Lúa Descolorida
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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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: Liveness
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  additional property: Valence (Positivity)
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Verdi: Rigoletto
type: MusicAlbum
date published: 2017-11-10
track: Rigoletto, Act I: Gran nuova!
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  duration ms: 41514
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  by artist: Andrius Apšega
  by artist: Tomas Pavilionis
  by artist: Kaunas State Choir
  by artist: Kaunas City Symphony Orchestra
  by artist: Constantine Orbelian
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    date published: 2017-11-10
  genre: classical
  genre: opera
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65df156581a45e765298c70692a531addac102bf11429590f79f9f4e5f91bd48. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USASX1652205.
    date published: 2026-07-08T03:22:41Z
  audio: Rigoletto, Act I: Gran nuova!
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    additional property: Speechiness
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track: Rigoletto, Act I: Figlia! Mio padre!
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  by artist: Giuseppe Verdi
  by artist: Dmitri Hvorostovsky
  by artist: Nadine Sierra
  by artist: Kaunas City Symphony Orchestra
  by artist: Constantine Orbelian
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    type: MusicAlbum
    date published: 2017-11-10
  genre: classical
  genre: opera
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  additional property: CopyrightStatus
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cca438ed03373aeb2f05fcaa9efbac438d109f3f2039be5db14cc45501acece. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USASX1652210.
    date published: 2026-07-08T08:56:20Z
  audio: Rigoletto, Act I: Figlia! Mio padre!
    type: AudioObject
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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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)
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Arlen: Over the Rainbow (From "The Wizard of Oz")
type: MusicAlbum
date published: 2024-06-28

Delibes: Lakmé / Flower Duet: Dôme épais le jasmin ... Sous le dôme épais
type: MusicAlbum
date published: 2024-04-26
track: Lakmé / Flower Duet: Dôme épais le jasmin ... Sous le dôme épais

Moore: The Ballad of Baby Doe: The Willow Song (Musical Moments)
type: MusicAlbum
date published: 2023-04-28
track: The Ballad of Baby Doe: The Willow Song - Musical Moments
  type: MusicRecording
  duration: PT3M57S
  duration ms: 237957
  explicit: false
  by artist: Douglas Moore
  by artist: Nadine Sierra
  by artist: Royal Philharmonic Orchestra
  by artist: Robert Spano
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    date published: 2023-04-28
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd06713465415ecdcc50da34ecbaa10cabf44181f6b5807798a1320be8a2ae72. 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/DEN962301120.
    date published: 2026-07-08T03:53:27Z
  audio: The Ballad of Baby Doe: The Willow Song - Musical Moments
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    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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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
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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Gounod: Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
type: MusicAlbum
date published: 2022-01-14
track: Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
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  duration: PT3M55S
  duration ms: 235466
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  by artist: Orchestra Sinfonica Nazionale della Rai
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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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-06-13T15:41:10Z
  audio: Roméo et Juliette, CG 9 / Act 1: Ah, je veux vivre
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    additional property: Danceability
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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)
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Foster: Beautiful Dreamer (Arr. Coughlin for Voice and Orchestra) [Musical Moments]
type: MusicAlbum
date published: 2020-06-12
track: Beautiful Dreamer (Arr. Coughlin for Voice and Orchestra)
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  duration: PT3M40S
  duration ms: 220868
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  by artist: Royal Philharmonic Orchestra
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-08T03:22:41Z
  audio: Beautiful Dreamer (Arr. Coughlin for Voice and Orchestra)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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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
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    additional property: Valence (Positivity)
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Villa-Lobos: Floresta do Amazonas, W551, 4. Melodia Sentimental
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date published: 2018-08-03
track: Floresta do Amazonas, W551: No. 4 Melodia Sentimental
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  additional property: OTSVerificationAPI
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-02T03:30:09Z
  audio: Floresta do Amazonas, W551: No. 4 Melodia Sentimental
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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Bernstein: West Side Story: Somewhere
type: MusicAlbum
date published: 2018-06-22
track: West Side Story: Somewhere
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  by artist: Leonard Bernstein
  by artist: Nadine Sierra
  by artist: Royal Philharmonic Orchestra
  by artist: Robert Spano
  in album: Bernstein: West Side Story: Somewhere
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    date published: 2018-06-22
  popularity: 28
  genre: classical
  genre: orchestra
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    date published: 2026-06-13T12:53:06Z
  audio: West Side Story: Somewhere
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