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genre: opera
popularity: 27
followers: 145
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-12T21:20:00Z
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track: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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  by artist: Jacques Offenbach
  by artist: Dame Joan Sutherland
  by artist: Huguette Tourangeau
  by artist: Chorus Pro Arte Lausanne Du Brassus
  by artist: Radio Suisse Romande Chorus
  by artist: Orchestre de la Suisse Romande
  by artist: Richard Bonynge
  in album: Opera Arias - Nessun Dorma - Casta Diva - O Mio Babbino Caro
    type: MusicAlbum
    date published: 2011-01-01
  popularity: 7
  genre: classical
  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-21T17:39:59Z
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track: Les Contes d'Hoffmann / Act 1: Les oiseaux dans la charmille
track: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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  by artist: Jacques Offenbach
  by artist: Dame Joan Sutherland
  by artist: Huguette Tourangeau
  by artist: Chorus Pro Arte Lausanne Du Brassus
  by artist: Radio Suisse Romande Chorus
  by artist: Orchestre de la Suisse Romande
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    date published: 2010-01-01
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  genre: german-romanticism
  genre: late-romantic-era
  genre: french-opera
  genre: french-romanticism
  genre: operetta
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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Les Contes d'Hoffmann / Act 1: Les oiseaux dans la charmille
type: MusicRecording
duration: PT5M3S
duration ms: 303853
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by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Jacques Charon
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
in album: Coloratura Spectacular
  type: MusicAlbum
  date published: 1998-01-01
popularity: 6
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: GBF077210790
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Les Contes d'Hoffmann / Act 1: Les oiseaux dans la charmille
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Time Signature
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Acousticness
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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
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
type: MusicRecording
duration: PT4M5S
duration ms: 245306
explicit: false
by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Huguette Tourangeau
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
in album: Relaxing Adagios
  type: MusicAlbum
  date published: 2006-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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duration: PT4M8S
duration ms: 248763
explicit: false
by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Huguette Tourangeau
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
in album: 50 Greatest Opera Classics
  type: MusicAlbum
  date published: 2012-01-01
popularity: 3
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: GBF077110650
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f31efd0c2bb7e0d4e54cddeb6192001b07c58cebf3c3cb68034c88b9a93c97. 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/GBF077110650.
  date published: 2026-07-08T03:20:19Z
audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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duration: PT4M15S
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by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Huguette Tourangeau
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
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genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
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 0xb2f31efd0c2bb7e0d4e54cddeb6192001b07c58cebf3c3cb68034c88b9a93c97. 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/GBF077110650.
  date published: 2026-07-08T08:56:20Z
audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
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  additional property: Danceability
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.071
  additional property: Liveness
    type: PropertyValue
    value: 0.363
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.054
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.896
  additional property: Key Name
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    value: D
  additional property: Mode Name
    type: PropertyValue
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
type: MusicRecording
duration: PT4M14S
duration ms: 254564
explicit: false
by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Huguette Tourangeau
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
in album: The 50 Most Essential Classical Music Pieces Ever
  type: MusicAlbum
  date published: 2013-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: GBF077110650
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f31efd0c2bb7e0d4e54cddeb6192001b07c58cebf3c3cb68034c88b9a93c97. 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/GBF077110650.
  date published: 2026-07-08T03:20:19Z
audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 99.429
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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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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    type: PropertyValue
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Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
type: MusicRecording
duration: PT4M10S
duration ms: 250253
explicit: false
by artist: Jacques Offenbach
by artist: Dame Joan Sutherland
by artist: Huguette Tourangeau
by artist: Chorus Pro Arte Lausanne Du Brassus
by artist: Radio Suisse Romande Chorus
by artist: Orchestre de la Suisse Romande
by artist: Richard Bonynge
in album: Barcarole - Berühmte Opern-Arien und Duette
  type: MusicAlbum
  date published: 1999-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: GBF077110650
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
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957061
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077110650
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 0xb2f31efd0c2bb7e0d4e54cddeb6192001b07c58cebf3c3cb68034c88b9a93c97. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:21:45Z), 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/GBF077110650.
  date published: 2026-07-21T21:21:45Z
audio: Les Contes d'Hoffmann / Act 2: "Belle nuit, ô nuit d'amour"
  type: AudioObject
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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
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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    type: PropertyValue
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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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    value: -28.928
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    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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