Ken Lazarus
type: MusicGroup
genre: calypso
genre: rocksteady
popularity: 2
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc379737d17acd2ba92eb249f8d26735f29bf21e03a4247b7f90df432e63b2193
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f87ec29d-1679-4455-9e2d-c703fa3f5c52.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f87ec29d-1679-4455-9e2d-c703fa3f5c52.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f87ec29d-1679-4455-9e2d-c703fa3f5c52
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc379737d17acd2ba92eb249f8d26735f29bf21e03a4247b7f90df432e63b2193","name":"Ken Lazarus","registered_at":"2026-06-21T16:07:07Z","symbol":"NIM1969516","token_address":"0x4b45bd52df8f5260ec533ae40e066ded172a7d8e","type":"artist","uuid":"f87ec29d-1679-4455-9e2d-c703fa3f5c52"}
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 0xc379737d17acd2ba92eb249f8d26735f29bf21e03a4247b7f90df432e63b2193. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f87ec29d-1679-4455-9e2d-c703fa3f5c52.json and https://artists.proofprofile.net/proofs/artist/f87ec29d-1679-4455-9e2d-c703fa3f5c52.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xc379737d17acd2ba92eb249f8d26735f29bf21e03a4247b7f90df432e63b2193","name":"Ken Lazarus","registered_at":"2026-06-21T16:07:07Z","symbol":"NIM1969516","token_address":"0x4b45bd52df8f5260ec533ae40e066ded172a7d8e","type":"artist","uuid":"f87ec29d-1679-4455-9e2d-c703fa3f5c52"}