Les Inconnus
type: MusicGroup
genre: chanson
description: thumb|Didier Bourdon, Bernard Campan and Pascal Légitimus (from left to right) at the 1996 Cannes Film Festival Les Inconnus ("The Unknowns") are a French trio of comedians consisting of Didier Bourdo
popularity: 3
followers: 236
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5280f5d5c522c92ef2e9379562a362596b8ecbbc81517805ea8b3ac929610515
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f9a4183-8372-4bab-a839-aa97b95f1cf5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f9a4183-8372-4bab-a839-aa97b95f1cf5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2f9a4183-8372-4bab-a839-aa97b95f1cf5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5280f5d5c522c92ef2e9379562a362596b8ecbbc81517805ea8b3ac929610515","name":"Les Inconnus","registered_at":"2026-06-16T06:11:23Z","symbol":"NIM0962080","token_address":"0xeebdc4db0532cc8a7217004bca276857bfbca8e2","type":"artist","uuid":"2f9a4183-8372-4bab-a839-aa97b95f1cf5"}
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 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 0x5280f5d5c522c92ef2e9379562a362596b8ecbbc81517805ea8b3ac929610515. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f9a4183-8372-4bab-a839-aa97b95f1cf5.json and https://artists.proofprofile.net/proofs/artist/2f9a4183-8372-4bab-a839-aa97b95f1cf5.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T20:04:35Z
  text: {"copyright_id":"0x5280f5d5c522c92ef2e9379562a362596b8ecbbc81517805ea8b3ac929610515","name":"Les Inconnus","registered_at":"2026-06-16T06:11:23Z","symbol":"NIM0962080","token_address":"0xeebdc4db0532cc8a7217004bca276857bfbca8e2","type":"artist","uuid":"2f9a4183-8372-4bab-a839-aa97b95f1cf5"}
album: Les Inconnus, Vol. 1
  type: MusicAlbum
  date published: 2009-04-07
album: Les inconnus
  type: MusicAlbum
  date published: 2012-10-18
album: Les Inconnus, Vol. 1
  type: MusicAlbum
  date published: 2017-12-01
album: Les Inconnus, Vol. 2
  type: MusicAlbum
  date published: 2017-12-22