Nana Liu
type: MusicGroup
genre: vinahouse
genre: v-pop
popularity: 2
followers: 1473
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71c12c1ed59156555a21c343ffb50b5db781ca36f554e4e2faaf09ebf0a7817d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cfcc516-c86d-4168-ab5a-89b46e29e4e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cfcc516-c86d-4168-ab5a-89b46e29e4e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1cfcc516-c86d-4168-ab5a-89b46e29e4e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71c12c1ed59156555a21c343ffb50b5db781ca36f554e4e2faaf09ebf0a7817d","name":"Nana Liu","registered_at":"2026-06-15T23:55:05Z","symbol":"NIM0872193","token_address":"0x17d2d53a71a7fe45d06a5adc7003e2b0b50c2360","type":"artist","uuid":"1cfcc516-c86d-4168-ab5a-89b46e29e4e9"}
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 0x71c12c1ed59156555a21c343ffb50b5db781ca36f554e4e2faaf09ebf0a7817d. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cfcc516-c86d-4168-ab5a-89b46e29e4e9.json and https://artists.proofprofile.net/proofs/artist/1cfcc516-c86d-4168-ab5a-89b46e29e4e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0x71c12c1ed59156555a21c343ffb50b5db781ca36f554e4e2faaf09ebf0a7817d","name":"Nana Liu","registered_at":"2026-06-15T23:55:05Z","symbol":"NIM0872193","token_address":"0x17d2d53a71a7fe45d06a5adc7003e2b0b50c2360","type":"artist","uuid":"1cfcc516-c86d-4168-ab5a-89b46e29e4e9"}
album: Sánh Duyên
  type: MusicAlbum
  date published: 2020-10-31
album: Dây Tơ Kết Đôi
  type: MusicAlbum
  date published: 2022-01-17
album: Dây Tơ Kết Đôi (BlazeDiary Remix - Instrumental)
  type: MusicAlbum
  date published: 2022-02-07
album: Dây Tơ Kết Đôi (BlazeDiary Remix)
  type: MusicAlbum
  date published: 2022-02-07
album: Chồng Ơi
  type: MusicAlbum
  date published: 2022-03-07
album: Tính Sao Giờ Ta (SinKra Remix)
  type: MusicAlbum
  date published: 2023-02-12
album: Má La Anh Giờ (Remix)
  type: MusicAlbum
  date published: 2023-09-22
album: Dây Tơ Kết Đôi (Remix)
  type: MusicAlbum
  date published: 2023-09-22
album: Hoa Không Nắng
  type: MusicAlbum
  date published: 2023-10-20
album: Dây Tơ Kết Đôi (Remix Version)
  type: MusicAlbum
  date published: 2023-12-08
album: Tính Sao Giờ Ta (Remix Version)
  type: MusicAlbum
  date published: 2023-12-08
album: Má La Anh Giờ (Remix Version)
  type: MusicAlbum
  date published: 2023-12-08
album: Bỏ Phố, Về Quê
  type: MusicAlbum
  date published: 2023-12-13
album: Tính Sao Giờ Ta (Chips Lofi)
  type: MusicAlbum
  date published: 2024-02-25
album: Không Nói Hai Lời
  type: MusicAlbum
  date published: 2025-01-11
album: Cục Vàng Của Anh
  type: MusicAlbum
  date published: 2025-08-07
album: Em Nhắc Anh
  type: MusicAlbum
  date published: 2025-09-15
album: Em Nhắc Anh (Remix)
  type: MusicAlbum
  date published: 2025-10-15
  track: Em Nhắc Anh - Remix
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216059
    explicit: false
    by artist: Nana Liu
    in album: Em Nhắc Anh (Remix)
      type: MusicAlbum
      date published: 2025-10-15
    genre: vinahouse
    genre: v-pop
    isrc code: VNA1M2406781
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T14:07:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea5953e3e0c24b4d41602a2d2b23fa5390714357d97c065153c6af12e4bcf765
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958563
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958563
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2406781
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T14:29:03Z
    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 0xea5953e3e0c24b4d41602a2d2b23fa5390714357d97c065153c6af12e4bcf765. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/VNA1M2406781.
      date published: 2026-07-18T14:29:03Z
    audio: Em Nhắc Anh - Remix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 137.981
      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: 0.775
      additional property: Energy
        type: PropertyValue
        value: 0.863
      additional property: Speechiness
        type: PropertyValue
        value: 0.046
      additional property: Acousticness
        type: PropertyValue
        value: 0.262
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.041
      additional property: Liveness
        type: PropertyValue
        value: 0.139
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.832
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.358
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Em Nhắc Anh (Remix)
  type: MusicAlbum
  date published: 2025-10-21