FM Le Sieur
type: MusicGroup
genre: dark cabaret
description: François Maurice Le Sieur is a Canadian musician and composer. He has been nominated for awards for television and film music in his native Canada, that include garnering seven Gemini award wins and s
popularity: 3
followers: 108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd5c7dc0421ddd0c2bd4f9864f6b08e4ca6ae20204fd7791b5fd207c5f9e50c35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa679c2b-8a5e-49da-8d68-1e31cfc960db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa679c2b-8a5e-49da-8d68-1e31cfc960db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aa679c2b-8a5e-49da-8d68-1e31cfc960db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd5c7dc0421ddd0c2bd4f9864f6b08e4ca6ae20204fd7791b5fd207c5f9e50c35","name":"FM Le Sieur","registered_at":"2026-06-20T09:13:56Z","symbol":"NIM1576232","token_address":"0x73f48fe2c656287b1cbbb0703f088732fc805528","type":"artist","uuid":"aa679c2b-8a5e-49da-8d68-1e31cfc960db"}
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 0xd5c7dc0421ddd0c2bd4f9864f6b08e4ca6ae20204fd7791b5fd207c5f9e50c35. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa679c2b-8a5e-49da-8d68-1e31cfc960db.json and https://artists.proofprofile.net/proofs/artist/aa679c2b-8a5e-49da-8d68-1e31cfc960db.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xd5c7dc0421ddd0c2bd4f9864f6b08e4ca6ae20204fd7791b5fd207c5f9e50c35","name":"FM Le Sieur","registered_at":"2026-06-20T09:13:56Z","symbol":"NIM1576232","token_address":"0x73f48fe2c656287b1cbbb0703f088732fc805528","type":"artist","uuid":"aa679c2b-8a5e-49da-8d68-1e31cfc960db"}
album: Being Human (Original Music Soundtrack)
  type: MusicAlbum
  date published: 2013-01-08
album: Tu m'aimes-Tu ?
  type: MusicAlbum
  date published: 2013-10-23
album: Musique De Film (Le Cinema d'Emile Gaudreault), Vol. 1
  type: MusicAlbum
  date published: 2020-07-30
album: Piano, Desert & Machines
  type: MusicAlbum
  date published: 2021-10-22
album: Ostinato (Solo Piano)
  type: MusicAlbum
  date published: 2022-02-11