Sébastien d'Hérin
type: MusicGroup
genre: opera
description: Sébastien d'Hérin is a French harpsichordist and conductor. As a harpsichordist he studied under Gustav Leonhardt, Pierre Hantaï, Bob van Asperen, Kenneth Gilbert and Christophe Rousset. He founded hi
popularity: 16
followers: 94
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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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track: Troisième leçon de ténèbres: No. 1, Jod
track: Première leçon de ténèbres: No. 1, Incipit Lamentatio - No. 2, Aleph
track: Première leçon de ténèbres: No. 4, Gimel
track: Pavane in F-Sharp Minor
track: Troisième leçon de ténèbres: No. 4, Mem

Troisième leçon de ténèbres: No. 1, Jod
type: MusicRecording
duration: PT1M30S
duration ms: 90426
explicit: false
by artist: François Couperin
by artist: Caroline Mutel
by artist: Karine Deshayes
by artist: Les Nouveaux Caractères
by artist: Sébastien d'Hérin
in album: Leçons de ténèbres
  type: MusicAlbum
  date published: 2020-03-20
genre: classical
genre: classical-era
genre: early-music
genre: baroque
genre: french-baroque
isrc code: ES7892000414
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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
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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Troisième leçon de ténèbres: No. 1, Jod
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Première leçon de ténèbres: No. 1, Incipit Lamentatio - No. 2, Aleph
type: MusicRecording
duration: PT2M32S
duration ms: 152066
explicit: false
by artist: François Couperin
by artist: Caroline Mutel
by artist: Les Nouveaux Caractères
by artist: Sébastien d'Hérin
in album: Leçons de ténèbres
  type: MusicAlbum
  date published: 2020-03-20
genre: classical
genre: classical-era
genre: early-music
genre: baroque
genre: french-baroque
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
audio: Première leçon de ténèbres: No. 1, Incipit Lamentatio - No. 2, Aleph
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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

Première leçon de ténèbres: No. 4, Gimel
type: MusicRecording
duration: PT1M30S
duration ms: 90906
explicit: false
by artist: François Couperin
by artist: Caroline Mutel
by artist: Les Nouveaux Caractères
by artist: Sébastien d'Hérin
in album: Leçons de ténèbres
  type: MusicAlbum
  date published: 2020-03-20
genre: classical
genre: classical-era
genre: early-music
genre: baroque
genre: french-baroque
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44163cbedbb85233ede59f0c449df2fc8b4b54a0418a6f056e2f08da9c49589d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/ES7892000403.
  date published: 2026-08-01T00:40:43Z
audio: Première leçon de ténèbres: No. 4, Gimel
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isrc code: ES7892000403
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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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

Pavane in F-Sharp Minor
type: MusicRecording
duration: PT8M17S
duration ms: 497800
explicit: false
by artist: Louis Couperin
by artist: Sébastien d'Hérin
in album: Leçons de ténèbres
  type: MusicAlbum
  date published: 2020-03-20
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9650dd401cf4dab5ef1344573ca95df8d15189fcfcafa057c5491bbf328b4b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES7892000407.
  date published: 2026-07-31T22:27:44Z
audio: Pavane in F-Sharp Minor
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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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  additional property: Loudness (dB)
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  additional property: Key Name
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    value: F
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isrc code: ES7892000407
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
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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

Troisième leçon de ténèbres: No. 4, Mem
type: MusicRecording
duration: PT1M27S
duration ms: 87360
explicit: false
by artist: François Couperin
by artist: Caroline Mutel
by artist: Karine Deshayes
by artist: Les Nouveaux Caractères
by artist: Sébastien d'Hérin
in album: Leçons de ténèbres
  type: MusicAlbum
  date published: 2020-03-20
genre: classical
genre: classical-era
genre: early-music
genre: baroque
genre: french-baroque
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb2f5d4c45eea2fe75d7892e1bc9f9aeef1d80c706a367ebd65a19185ccef3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7892000417.
  date published: 2026-07-31T18:48:12Z
audio: Troisième leçon de ténèbres: No. 4, Mem
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isrc code: ES7892000417
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: 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