Laurent Wagschal
type: MusicGroup
genre: chamber music
popularity: 36
followers: 429
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8d7a7da11b50b7baea2fa07633dc8c4ab7aa8b52ba119ca254dc9dda0298bbe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/258d1dd7-9b5c-4c67-b267-ef96dcf8de76.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/258d1dd7-9b5c-4c67-b267-ef96dcf8de76.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/258d1dd7-9b5c-4c67-b267-ef96dcf8de76
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd8d7a7da11b50b7baea2fa07633dc8c4ab7aa8b52ba119ca254dc9dda0298bbe","name":"Laurent Wagschal","registered_at":"2026-06-11T14:29:17Z","symbol":"NIM0049346","token_address":"0x0839a1e5d2697493bc7eb777448d048831c51ce2","type":"artist","uuid":"258d1dd7-9b5c-4c67-b267-ef96dcf8de76"}
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 0xd8d7a7da11b50b7baea2fa07633dc8c4ab7aa8b52ba119ca254dc9dda0298bbe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/258d1dd7-9b5c-4c67-b267-ef96dcf8de76.json and https://artists.proofprofile.net/proofs/artist/258d1dd7-9b5c-4c67-b267-ef96dcf8de76.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xd8d7a7da11b50b7baea2fa07633dc8c4ab7aa8b52ba119ca254dc9dda0298bbe","name":"Laurent Wagschal","registered_at":"2026-06-11T14:29:17Z","symbol":"NIM0049346","token_address":"0x0839a1e5d2697493bc7eb777448d048831c51ce2","type":"artist","uuid":"258d1dd7-9b5c-4c67-b267-ef96dcf8de76"}
album: Paris 1900 - The art of the Flute
  type: MusicAlbum
  date published: 2022-03-25