Lucien Kandel
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 6
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe57bda9f34c2a192b420150072dd591386340a1f8818f35c09b6b7f0a9666a0e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b393e668-f99d-4f31-92d4-e0a10493e040.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b393e668-f99d-4f31-92d4-e0a10493e040.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b393e668-f99d-4f31-92d4-e0a10493e040
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe57bda9f34c2a192b420150072dd591386340a1f8818f35c09b6b7f0a9666a0e","name":"Lucien Kandel","registered_at":"2026-06-20T13:41:16Z","symbol":"NIM1623966","token_address":"0xaa715733ea23599849babff63ac6ecb59bca1d47","type":"artist","uuid":"b393e668-f99d-4f31-92d4-e0a10493e040"}
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 0xe57bda9f34c2a192b420150072dd591386340a1f8818f35c09b6b7f0a9666a0e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b393e668-f99d-4f31-92d4-e0a10493e040.json and https://artists.proofprofile.net/proofs/artist/b393e668-f99d-4f31-92d4-e0a10493e040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe57bda9f34c2a192b420150072dd591386340a1f8818f35c09b6b7f0a9666a0e","name":"Lucien Kandel","registered_at":"2026-06-20T13:41:16Z","symbol":"NIM1623966","token_address":"0xaa715733ea23599849babff63ac6ecb59bca1d47","type":"artist","uuid":"b393e668-f99d-4f31-92d4-e0a10493e040"}