Hervé Niquet
type: MusicGroup
description: thumb| Hervé Niquet (born 28 October 1957) is a French conductor, harpsichordist, tenor, and the director of Le Concert Spirituel, specializing in French Baroque music. Biography Born on 28 Octobe
popularity: 9
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d38c828572a752d2d97009d1e789bece9944d61849cfca23b6c9d200c92ae1b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c06659a2-1cc2-4622-807e-b3082af169ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c06659a2-1cc2-4622-807e-b3082af169ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c06659a2-1cc2-4622-807e-b3082af169ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d38c828572a752d2d97009d1e789bece9944d61849cfca23b6c9d200c92ae1b","name":"Hervé Niquet","registered_at":"2026-06-20T19:09:12Z","symbol":"NIM1686104","token_address":"0xb717109b5d6de91213ce14050ccf111b800574bc","type":"artist","uuid":"c06659a2-1cc2-4622-807e-b3082af169ba"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d38c828572a752d2d97009d1e789bece9944d61849cfca23b6c9d200c92ae1b. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c06659a2-1cc2-4622-807e-b3082af169ba.json and https://artists.proofprofile.net/proofs/artist/c06659a2-1cc2-4622-807e-b3082af169ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x9d38c828572a752d2d97009d1e789bece9944d61849cfca23b6c9d200c92ae1b","name":"Hervé Niquet","registered_at":"2026-06-20T19:09:12Z","symbol":"NIM1686104","token_address":"0xb717109b5d6de91213ce14050ccf111b800574bc","type":"artist","uuid":"c06659a2-1cc2-4622-807e-b3082af169ba"}
album: Lully, J.-B.: Proserpine [Opera]
  type: MusicAlbum
  date published: 2007-01-01
album: Destouches, A.C.: Callirhoe [Opera]
  type: MusicAlbum
  date published: 2007-01-01