Cécile Hugonnard-Roche
type: MusicGroup
description: Cécile Hugonnard-Roche is a French pianist and piano assistant teacher at the Conservatoire de Paris and has taught at the École normale de musique de Paris. As of 2016, Hugonnard-Roche teaches the p
popularity: 3
followers: 120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc48466746456fd4f6ff38812fd6674d301dd4834e4fb53709d66f39c572ebcc7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954019
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954019
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3629c771-7dc0-4830-b67c-674d44c85e77.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3629c771-7dc0-4830-b67c-674d44c85e77.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3629c771-7dc0-4830-b67c-674d44c85e77
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:44:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc48466746456fd4f6ff38812fd6674d301dd4834e4fb53709d66f39c572ebcc7","name":"Cécile Hugonnard-Roche","registered_at":"2026-06-16T08:45:13Z","symbol":"NIM0998812","token_address":"0xbee3f0cd0f500d676e3209c4b6a7cbd7b516302b","type":"artist","uuid":"3629c771-7dc0-4830-b67c-674d44c85e77"}
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 0xc48466746456fd4f6ff38812fd6674d301dd4834e4fb53709d66f39c572ebcc7. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3629c771-7dc0-4830-b67c-674d44c85e77.json and https://artists.proofprofile.net/proofs/artist/3629c771-7dc0-4830-b67c-674d44c85e77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:44:13Z
  text: {"copyright_id":"0xc48466746456fd4f6ff38812fd6674d301dd4834e4fb53709d66f39c572ebcc7","name":"Cécile Hugonnard-Roche","registered_at":"2026-06-16T08:45:13Z","symbol":"NIM0998812","token_address":"0xbee3f0cd0f500d676e3209c4b6a7cbd7b516302b","type":"artist","uuid":"3629c771-7dc0-4830-b67c-674d44c85e77"}
album: Méditation piano
  type: MusicAlbum
  date published: 2003
album: Méditation: Piano
  type: MusicAlbum
  date published: 2003-01-01