Las Lau
type: MusicGroup
genre: gufeng
popularity: 19
followers: 163
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe3ff3ba4104678e6e4f26329a7e00a3d8a53687698675e69f4d9e8e1a90f29d5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9def6c67-799e-461a-b396-53e0496adc4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9def6c67-799e-461a-b396-53e0496adc4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9def6c67-799e-461a-b396-53e0496adc4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe3ff3ba4104678e6e4f26329a7e00a3d8a53687698675e69f4d9e8e1a90f29d5","name":"Las Lau","registered_at":"2026-06-14T21:09:50Z","symbol":"NIM0577354","token_address":"0xb188f0c407437b0600ccba237b7812ef7f492254","type":"artist","uuid":"9def6c67-799e-461a-b396-53e0496adc4c"}
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 0xe3ff3ba4104678e6e4f26329a7e00a3d8a53687698675e69f4d9e8e1a90f29d5. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9def6c67-799e-461a-b396-53e0496adc4c.json and https://artists.proofprofile.net/proofs/artist/9def6c67-799e-461a-b396-53e0496adc4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0xe3ff3ba4104678e6e4f26329a7e00a3d8a53687698675e69f4d9e8e1a90f29d5","name":"Las Lau","registered_at":"2026-06-14T21:09:50Z","symbol":"NIM0577354","token_address":"0xb188f0c407437b0600ccba237b7812ef7f492254","type":"artist","uuid":"9def6c67-799e-461a-b396-53e0496adc4c"}
album: Sweetest Love Song
  type: MusicAlbum
  date published: 2022-09-21