Liu Hua
type: MusicGroup
popularity: 4
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77ce33e9b62b839bace7695251ba4e748758e02a568dc3d070df95a70b56dd99
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x77ce33e9b62b839bace7695251ba4e748758e02a568dc3d070df95a70b56dd99","name":"Liu Hua","registered_at":"2026-06-20T09:07:22Z","symbol":"NIM1575425","token_address":"0x5cadc2281c30de2d607c42c06d58fd522d2ebeb8","type":"artist","uuid":"a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b"}
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 0x77ce33e9b62b839bace7695251ba4e748758e02a568dc3d070df95a70b56dd99. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b.json and https://artists.proofprofile.net/proofs/artist/a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x77ce33e9b62b839bace7695251ba4e748758e02a568dc3d070df95a70b56dd99","name":"Liu Hua","registered_at":"2026-06-20T09:07:22Z","symbol":"NIM1575425","token_address":"0x5cadc2281c30de2d607c42c06d58fd522d2ebeb8","type":"artist","uuid":"a9eb95c8-9b4c-4bf3-bf10-e0ee33b1f22b"}
album: Pigsy
  type: MusicAlbum
  date published: 2025-03-31
  track: Pigsy
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152528
    explicit: false
    by artist: Liu Hua
    in album: Pigsy
      type: MusicAlbum
      date published: 2025-03-31
    isrc code: QM6N22532765
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T19:03:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x925c584e3278ad3be2bf8cdefe6753f6a90f43bec1925f7e9258389425189e54
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958600
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958600
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N22532765
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:24:05Z
    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 0x925c584e3278ad3be2bf8cdefe6753f6a90f43bec1925f7e9258389425189e54. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM6N22532765.
      date published: 2026-07-18T19:24:05Z
    audio: Pigsy
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.037
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.682
      additional property: Energy
        type: PropertyValue
        value: 0.725
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.145
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.927
      additional property: Liveness
        type: PropertyValue
        value: 0.052
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.971
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.903
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Wedding Piggy
  type: MusicAlbum
  date published: 2025-06-11