Leong Lau
type: MusicGroup
popularity: 6
followers: 614
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x216d130ccc11658f2dff8bb19f0a3ba7a9fec0d23d8a9d99df924db7caf68c9d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86c6b5ec-ca40-4163-8b0a-e75f474f2ae8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86c6b5ec-ca40-4163-8b0a-e75f474f2ae8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86c6b5ec-ca40-4163-8b0a-e75f474f2ae8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x216d130ccc11658f2dff8bb19f0a3ba7a9fec0d23d8a9d99df924db7caf68c9d","name":"Leong Lau","registered_at":"2026-06-17T12:26:35Z","symbol":"NIM1395134","token_address":"0x72d0980ecd9a9dba816fef91a049bac4a305c79f","type":"artist","uuid":"86c6b5ec-ca40-4163-8b0a-e75f474f2ae8"}
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 0x216d130ccc11658f2dff8bb19f0a3ba7a9fec0d23d8a9d99df924db7caf68c9d. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86c6b5ec-ca40-4163-8b0a-e75f474f2ae8.json and https://artists.proofprofile.net/proofs/artist/86c6b5ec-ca40-4163-8b0a-e75f474f2ae8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x216d130ccc11658f2dff8bb19f0a3ba7a9fec0d23d8a9d99df924db7caf68c9d","name":"Leong Lau","registered_at":"2026-06-17T12:26:35Z","symbol":"NIM1395134","token_address":"0x72d0980ecd9a9dba816fef91a049bac4a305c79f","type":"artist","uuid":"86c6b5ec-ca40-4163-8b0a-e75f474f2ae8"}
album: That Rongeng Sound
  type: MusicAlbum
  date published: 2015-01-19
  track: That Rongeng Sound
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225227
    explicit: false
    by artist: Leong Lau
    in album: That Rongeng Sound
      type: MusicAlbum
      date published: 2015-01-19
    isrc code: AUAZF1400013
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T10:06:14+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcac03d15eb94d1130e11890ae2ea3b73c717d038ef154e5d8846007d25386491
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958716
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958716
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAZF1400013
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T10:15:55Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac03d15eb94d1130e11890ae2ea3b73c717d038ef154e5d8846007d25386491. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAZF1400013.
      date published: 2026-07-19T10:15:55Z
    audio: That Rongeng Sound
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.296
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.642
      additional property: Energy
        type: PropertyValue
        value: 0.505
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.688
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.344
      additional property: Liveness
        type: PropertyValue
        value: 0.149
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.895
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.86
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: That Rongeng Sound
  type: MusicAlbum
  date published: 2015-01-19
album: Late Night Flyer / One Dimensional Man
  type: MusicAlbum
  date published: 2021-06-21
album: Dragon Man
  type: MusicAlbum
  date published: 2024-07-18