La belle Hélène, Act I: Marche. "Voici les rois de la Grèce !" - Couplets des rois. "Ces rois remplis de vaillance" (Chœur, Ajax I, Ajax II, Calchas, Oreste, Achille, Ménélas, Agamemnon)
type: MusicRecording
duration: PT4M11S
duration ms: 251864
explicit: false
by artist: Jacques Offenbach
by artist: Orchestre Lamoureux
by artist: Jules Gressier
by artist: Choeurs Raymond Saint-Paul
by artist: Gaston Rey
by artist: Aimé Doniat
by artist: Michel Roux
by artist: Liliane Berton
by artist: Bernard Demigny
by artist: Christian Duvaleix
by artist: Willy Clement
in album: Offenbach: La belle Hélène, enregistrement abrégé (Mono Version)
  type: MusicAlbum
  date published: 1950-01-01
genre: classical
genre: german-romanticism
genre: late-romantic-era
genre: french-opera
genre: french-romanticism
genre: operetta
isrc code: FRS181521957
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T14:26:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe991d6db9ce52e0e809d551ac15a512292328f75ea0bb327cd315dc6ba77f30f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960266
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960266
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS181521957
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:44:50Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991d6db9ce52e0e809d551ac15a512292328f75ea0bb327cd315dc6ba77f30f. 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/FRS181521957.
  date published: 2026-07-30T14:44:50Z
audio: La belle Hélène, Act I: Marche. "Voici les rois de la Grèce !" - Couplets des rois. "Ces rois remplis de vaillance" (Chœur, Ajax I, Ajax II, Calchas, Oreste, Achille, Ménélas, Agamemnon)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.51
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.657
  additional property: Energy
    type: PropertyValue
    value: 0.368
  additional property: Speechiness
    type: PropertyValue
    value: 0.337
  additional property: Acousticness
    type: PropertyValue
    value: 0.857
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.329
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.579
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.623
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major