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genre: opera
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track: Offenbach: La Belle Hélène, Act 1: Chœur. "Vers tes autels, Jupin, nous accourons joyeux" (Chœur)
track: Offenbach: La Belle Hélène, Act 1: Couplets. "Amours divins ! Ardentes flammes !" (Hélène, Chœur)
track: Offenbach: La Belle Hélène, Act 1: Chanson d'Oreste. "Au cabaret du labyrinthe" (Oreste, Calchas, Parthénis, Léœna, Chœur)
track: Offenbach: La Belle Hélène, Act 3: Choeur et chanson d'Oreste. "Dansons, aimons, buvons, chantons !" (Chœur, Oreste)
track: Offenbach: La Belle Hélène, Act 1: Finale. "Les Dieux decrétènt par ma voix" (Calchas, Ménélas, Hélène, Pâris, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
track: Offenbach: La Belle Hélène, Act 1: Chœur. "C'est le devoir des jeunes filles" (Chœur, Hélène)
track: Offenbach: La Belle Hélène, Act 1: Dialogue. "Mesdemoiselles, voici le Calchas demandé" - Couplets. "Tzing la la, tzing la la " (Oreste, Calchas, Léœna, Parthénis, Chœur)
track: Offenbach: La Belle Hélène, Act 1: Dialogue. "Rois et peuples de la Grèce, salut à vous !" (Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas, Chœur)
track: Offenbach: La Belle Hélène, Act 1: Finale. "Gloire ! Gloire au berger victorieux" (Chœur, Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas)
track: Offenbach: La Belle Hélène, Act 1: Finale. "Ainsi vous êtes gentilhomme" (Ménélas, Hélène, Pâris, Calchas, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
track: Offenbach: La Belle Hélène, Act 2: Chœur. "Ô Reine, en ce jour, il faut faire" (Chœur, Bacchis, Hélène)
track: Offenbach: La Belle Hélène, Act 2: Marche de l'oie. "Le voici, le roi des rois" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
track: Offenbach: La Belle Hélène, Act 2: Scène du jeu de l'oie. "A Calchas qui tremblote" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
track: Offenbach: La Belle Hélène, Act 2: Finale. "À moi, rois de la Grèce !" - Chœur. "En couronnes, tressons les roses" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calcha
track: Offenbach: La Belle Hélène, Act 2: Couplets. "Ne criez pas notre cher hôte" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
track: Offenbach: La Belle Hélène, Act 2: Air et chœur. "Va t'en, va t'en, mon amour te suivra" (Hélène, Ménélas, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
track: Offenbach: La Belle Hélène, Act 3: Chœur. "La galère de Cythère" (Chœur, Ménélas, Parthénis, Léœna, Oreste, Ajax I, Ajax II, Achille, Agamemnon, Hélène, Calchas)

Offenbach: La Belle Hélène, Act 1: Chœur. "Vers tes autels, Jupin, nous accourons joyeux" (Chœur)
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by artist: Choeur des Musiciens du Louvre
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
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  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
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  date published: 2026-07-06T06:56:49Z
audio: Offenbach: La Belle Hélène, Act 1: Chœur. "Vers tes autels, Jupin, nous accourons joyeux" (Chœur)
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Offenbach: La Belle Hélène, Act 1: Couplets. "Amours divins ! Ardentes flammes !" (Hélène, Chœur)
type: MusicRecording
duration: PT3M32S
duration ms: 212506
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by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Choeur des Musiciens du Louvre
by artist: Felicity Lott
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
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  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
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genre: french-romanticism
genre: operetta
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  date published: 2026-07-06T01:26:17Z
audio: Offenbach: La Belle Hélène, Act 1: Couplets. "Amours divins ! Ardentes flammes !" (Hélène, Chœur)
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Offenbach: La Belle Hélène, Act 1: Chanson d'Oreste. "Au cabaret du labyrinthe" (Oreste, Calchas, Parthénis, Léœna, Chœur)
type: MusicRecording
duration: PT2M55S
duration ms: 175840
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Choeur des Musiciens du Louvre
by artist: Magali Léger
by artist: Marie-Ange Todorovitch
by artist: Stéphanie D'Oustrac
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: GBAYC0003383
additional property: CopyrightID
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additional property: OTSVerifyInstructions
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  date published: 2026-07-22T09:01:18Z
audio: Offenbach: La Belle Hélène, Act 1: Chanson d'Oreste. "Au cabaret du labyrinthe" (Oreste, Calchas, Parthénis, Léœna, Chœur)
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Offenbach: La Belle Hélène, Act 3: Choeur et chanson d'Oreste. "Dansons, aimons, buvons, chantons !" (Chœur, Oreste)
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genre: classical
genre: german-romanticism
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  date published: 2026-07-08T03:20:19Z
audio: Offenbach: La Belle Hélène, Act 3: Choeur et chanson d'Oreste. "Dansons, aimons, buvons, chantons !" (Chœur, Oreste)
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Offenbach: La Belle Hélène, Act 1: Finale. "Les Dieux decrétènt par ma voix" (Calchas, Ménélas, Hélène, Pâris, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
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by artist: Jacques Offenbach
by artist: Marc Minkowski
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by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
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in album: Offenbach: La Belle Hélène
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  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T14:47:20Z
audio: Offenbach: La Belle Hélène, Act 1: Finale. "Les Dieux decrétènt par ma voix" (Calchas, Ménélas, Hélène, Pâris, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
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  additional property: Loudness (dB)
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Offenbach: La Belle Hélène, Act 1: Chœur. "C'est le devoir des jeunes filles" (Chœur, Hélène)
type: MusicRecording
duration: PT1M46S
duration ms: 106120
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Choeur des Musiciens du Louvre
by artist: Felicity Lott
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aab024b7b5ba55b1e2e39fddf1ebc065b203761ee251eb9397ac8a4d8b0b4f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAYC0003380.
  date published: 2026-07-29T11:07:37Z
audio: Offenbach: La Belle Hélène, Act 1: Chœur. "C'est le devoir des jeunes filles" (Chœur, Hélène)
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  additional property: Loudness (dB)
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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

Offenbach: La Belle Hélène, Act 1: Dialogue. "Mesdemoiselles, voici le Calchas demandé" - Couplets. "Tzing la la, tzing la la " (Oreste, Calchas, Léœna, Parthénis, Chœur)
type: MusicRecording
duration: PT1M17S
duration ms: 77933
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Choeur des Musiciens du Louvre
by artist: Françoix Le Roux
by artist: Magali Léger
by artist: Marie-Ange Todorovitch
by artist: Stéphanie D'Oustrac
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22600cf487bd48604d2fc4869a76852530c3c26fe495a86c7c9b03027e3d9d38. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBAYC0003384.
  date published: 2026-07-30T00:53:20Z
audio: Offenbach: La Belle Hélène, Act 1: Dialogue. "Mesdemoiselles, voici le Calchas demandé" - Couplets. "Tzing la la, tzing la la " (Oreste, Calchas, Léœna, Parthénis, Chœur)
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    type: PropertyValue
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  additional property: Mode (Major/Minor)
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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

Offenbach: La Belle Hélène, Act 1: Dialogue. "Rois et peuples de la Grèce, salut à vous !" (Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas, Chœur)
type: MusicRecording
duration: PT5M25S
duration ms: 325266
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2780234c0db01a090068666438ca98f07dc1f125160a30bb5f99cab6256e935. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBAYC0003389.
  date published: 2026-07-30T12:06:10Z
audio: Offenbach: La Belle Hélène, Act 1: Dialogue. "Rois et peuples de la Grèce, salut à vous !" (Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas, Chœur)
  type: AudioObject
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    value: 141.237
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    type: PropertyValue
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  additional property: Acousticness
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isrc code: GBAYC0003389
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Offenbach: La Belle Hélène, Act 1: Finale. "Gloire ! Gloire au berger victorieux" (Chœur, Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas)
type: MusicRecording
duration: PT2M24S
duration ms: 144440
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae943c0a1e5b6c5fae1b5815f738fbd2a67495835e4dd13008e1be01f4fa8b4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAYC0003390.
  date published: 2026-07-29T11:07:37Z
audio: Offenbach: La Belle Hélène, Act 1: Finale. "Gloire ! Gloire au berger victorieux" (Chœur, Agamemnon, Hélène, Oreste, Ménélas, Ajax I, Ajax II, Achille, Pâris, Calchas)
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isrc code: GBAYC0003390
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Offenbach: La Belle Hélène, Act 1: Finale. "Ainsi vous êtes gentilhomme" (Ménélas, Hélène, Pâris, Calchas, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
type: MusicRecording
duration: PT3M17S
duration ms: 197333
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757e5c3a173452712eec0f9cfa984ad096b234c44f31fce4afd65f7f9621f0cd. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC0003391.
  date published: 2026-07-29T22:48:59Z
audio: Offenbach: La Belle Hélène, Act 1: Finale. "Ainsi vous êtes gentilhomme" (Ménélas, Hélène, Pâris, Calchas, Agamemnon, Oreste, Ajax I, Ajax II, Achille, Chœur)
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  additional property: Danceability
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isrc code: GBAYC0003391
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Offenbach: La Belle Hélène, Act 2: Chœur. "Ô Reine, en ce jour, il faut faire" (Chœur, Bacchis, Hélène)
type: MusicRecording
duration: PT2M41S
duration ms: 161506
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Choeur des Musiciens du Louvre
by artist: Felicity Lott
by artist: Hjördis Thébault
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6b890e6ebccf68003d05e5d54be9c562c77a3b112ed48aebe6e016e47ce21e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC0003395.
  date published: 2026-07-29T22:48:59Z
audio: Offenbach: La Belle Hélène, Act 2: Chœur. "Ô Reine, en ce jour, il faut faire" (Chœur, Bacchis, Hélène)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.998
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.322
  additional property: Energy
    type: PropertyValue
    value: 0.059
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.972
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.086
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.16
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBAYC0003395
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960160
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T22:48:59+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0003395
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960160
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960160
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T22:48:59+00:00
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

Offenbach: La Belle Hélène, Act 2: Marche de l'oie. "Le voici, le roi des rois" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
type: MusicRecording
duration: PT0M58S
duration ms: 58186
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Francois Le Roux
by artist: Hjördis Thébault
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c0f6c7eb9a94f58df7bbe0f8a63559c58d8e47bbd0f06c7f520ebbd4fa9c3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC0003399.
  date published: 2026-07-29T21:09:47Z
audio: Offenbach: La Belle Hélène, Act 2: Marche de l'oie. "Le voici, le roi des rois" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.99
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.67
  additional property: Energy
    type: PropertyValue
    value: 0.297
  additional property: Speechiness
    type: PropertyValue
    value: 0.107
  additional property: Acousticness
    type: PropertyValue
    value: 0.936
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.146
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.755
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBAYC0003399
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960144
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T21:09:47+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0003399
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47+00:00
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

Offenbach: La Belle Hélène, Act 2: Scène du jeu de l'oie. "A Calchas qui tremblote" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
type: MusicRecording
duration: PT5M22S
duration ms: 322200
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Hjördis Thébault
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f6c9d70ca73e004e01bf0fcf486c9da427023c10a26150b446acef10850eb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC0003401.
  date published: 2026-07-29T19:35:34Z
audio: Offenbach: La Belle Hélène, Act 2: Scène du jeu de l'oie. "A Calchas qui tremblote" (Chœur, Hélène, Bacchis, Oreste, Achille, Ajax I, Ajax II, Agamemnon, Calchas)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.515
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.447
  additional property: Energy
    type: PropertyValue
    value: 0.237
  additional property: Speechiness
    type: PropertyValue
    value: 0.206
  additional property: Acousticness
    type: PropertyValue
    value: 0.951
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.611
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.265
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.106
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBAYC0003401
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0003401
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
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

Offenbach: La Belle Hélène, Act 2: Finale. "À moi, rois de la Grèce !" - Chœur. "En couronnes, tressons les roses" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calcha
type: MusicRecording
duration: PT2M35S
duration ms: 155800
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Hjördis Thébault
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4945918d8051c8350bb7b6055953e84d0d82ff151050d5d42d9ef87e67387471. 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/GBAYC0003406.
  date published: 2026-07-30T09:57:33Z
audio: Offenbach: La Belle Hélène, Act 2: Finale. "À moi, rois de la Grèce !" - Chœur. "En couronnes, tressons les roses" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calcha
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 97.791
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.418
  additional property: Energy
    type: PropertyValue
    value: 0.16
  additional property: Speechiness
    type: PropertyValue
    value: 0.196
  additional property: Acousticness
    type: PropertyValue
    value: 0.946
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.266
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.354
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.926
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBAYC0003406
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960240
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0003406
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960240
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960240
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
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

Offenbach: La Belle Hélène, Act 2: Couplets. "Ne criez pas notre cher hôte" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
type: MusicRecording
duration: PT2M46S
duration ms: 166333
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Hjördis Thébault
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff3d19974f7d5792d189437ef407d74a42d09c98fc041b3a0afc39344a61be4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBAYC0003407.
  date published: 2026-07-29T14:28:24Z
audio: Offenbach: La Belle Hélène, Act 2: Couplets. "Ne criez pas notre cher hôte" (Ménélas, Hélène, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.695
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.563
  additional property: Energy
    type: PropertyValue
    value: 0.111
  additional property: Speechiness
    type: PropertyValue
    value: 0.167
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.274
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.449
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.505
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: GBAYC0003407
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960117
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T14:28:24+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC0003407
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960117
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960117
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T14:28:24+00:00
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

Offenbach: La Belle Hélène, Act 2: Air et chœur. "Va t'en, va t'en, mon amour te suivra" (Hélène, Ménélas, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
type: MusicRecording
duration: PT3M20S
duration ms: 200800
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Hjördis Thébault
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Yann Beuron
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f0ea8156eb11a5bbee5638e1a8328322c5fe33f73649d851714919a67f3bb7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC0003408.
  date published: 2026-07-29T19:35:34Z
audio: Offenbach: La Belle Hélène, Act 2: Air et chœur. "Va t'en, va t'en, mon amour te suivra" (Hélène, Ménélas, Pâris, Oreste, Agamemnon, Ajax I, Ajax II, Achille, Calchas, Bacchis, Chœur)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.492
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.406
  additional property: Energy
    type: PropertyValue
    value: 0.264
  additional property: Speechiness
    type: PropertyValue
    value: 0.117
  additional property: Acousticness
    type: PropertyValue
    value: 0.952
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.038
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additional property: CopyrightID
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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

Offenbach: La Belle Hélène, Act 3: Chœur. "La galère de Cythère" (Chœur, Ménélas, Parthénis, Léœna, Oreste, Ajax I, Ajax II, Achille, Agamemnon, Hélène, Calchas)
type: MusicRecording
duration: PT1M56S
duration ms: 116160
explicit: false
by artist: Jacques Offenbach
by artist: Marc Minkowski
by artist: Alain Gabriel
by artist: Choeur des Musiciens du Louvre
by artist: Éric Huchet
by artist: Felicity Lott
by artist: Françoix Le Roux
by artist: Laurent Alvaro
by artist: Laurent Naouri
by artist: Magali Léger
by artist: Marie-Ange Todorovitch
by artist: Michel Sénéchal
by artist: Stéphanie D'Oustrac
by artist: Les Musiciens du Louvre
in album: Offenbach: La Belle Hélène
  type: MusicAlbum
  date published: 2001-11-06
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7615fafb1e2851949eb0b2cb11e3b67950ab6e659a11ea871ce2de8b7c0608d. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/GBAYC0003418.
  date published: 2026-07-30T14:44:50Z
audio: Offenbach: La Belle Hélène, Act 3: Chœur. "La galère de Cythère" (Chœur, Ménélas, Parthénis, Léœna, Oreste, Ajax I, Ajax II, Achille, Agamemnon, Hélène, Calchas)
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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: Acousticness
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  additional property: Instrumentalness
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  additional property: Key Name
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    value: E
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    value: Major
isrc code: GBAYC0003418
additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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