Sébastien Rouland
type: MusicGroup
genre: opera
popularity: 5
followers: 10
additional property: CopyrightID
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: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2ab044d510eee89fc195214b8cf22eeda0790c7d9a57356ab3cd84b4adb36. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5820634-39c8-4e8e-8129-a1634b05d2a3.json and https://artists.proofprofile.net/proofs/artist/b5820634-39c8-4e8e-8129-a1634b05d2a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
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track: La fille de Madame Angot, Act I: V. Légende. Marchande de marée
track: La fille de Madame Angot, Act I: XV. Chanson politique et suite du final. Jadis les rois, race proscrite

La fille de Madame Angot, Act I: V. Légende. Marchande de marée
type: MusicRecording
duration: PT2M17S
duration ms: 137120
explicit: false
by artist: Charles Lecocq
by artist: Ingrid Perruche
by artist: Chœur du Concert Spirituel
by artist: Orchestre de chambre de Paris
by artist: Sébastien Rouland
in album: Charles Lecocq: La fille de Madame Angot
  type: MusicAlbum
  date published: 2021-10-22
isrc code: ITJXZ2100206
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITJXZ2100206
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc78e504c72cd4ffc673eec0ac79bd94eb446e9cf998f55ebf85f2e4ad5b7b92. 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/ITJXZ2100206.
  date published: 2026-07-08T03:20:19Z
audio: La fille de Madame Angot, Act I: V. Légende. Marchande de marée
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.565
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
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  additional property: Energy
    type: PropertyValue
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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
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

La fille de Madame Angot, Act I: XV. Chanson politique et suite du final. Jadis les rois, race proscrite
type: MusicRecording
duration: PT5M3S
duration ms: 303280
explicit: false
by artist: Charles Lecocq
by artist: Anne-Catherine Gillet
by artist: Artavazd Sargsyan
by artist: Mathias Vidal
by artist: Matthieu Lécroart
by artist: Antoine Philippot
by artist: Ingrid Perruche
by artist: David Witczak
by artist: Flannan Obé
by artist: Chœur du Concert Spirituel
by artist: Orchestre de chambre de Paris
by artist: Sébastien Rouland
in album: Charles Lecocq: La fille de Madame Angot
  type: MusicAlbum
  date published: 2021-10-22
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e34a59522b88d1349587e61a40a202ebc2c0f58c4573c2c24a28fff6629ffb8. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ITJXZ2100216.
  date published: 2026-07-31T20:42:35Z
audio: La fille de Madame Angot, Act I: XV. Chanson politique et suite du final. Jadis les rois, race proscrite
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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: Key Name
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    value: F
  additional property: Mode Name
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    value: Major
isrc code: ITJXZ2100216
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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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