Hiền Mai
type: MusicGroup
genre: v-pop
popularity: 3
followers: 197
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcef2b97bced981c4c4d72b0137e0d1f8a7d58c3afd112ff2533e87c0524216f5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4da4041-4c34-4b17-bcf6-76768d3a9180.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4da4041-4c34-4b17-bcf6-76768d3a9180.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4da4041-4c34-4b17-bcf6-76768d3a9180
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcef2b97bced981c4c4d72b0137e0d1f8a7d58c3afd112ff2533e87c0524216f5","name":"Hiền Mai","registered_at":"2026-06-21T14:42:39Z","symbol":"NIM1950095","token_address":"0x9e17f9946377c1c3e1caf7be87fa42e9dbff47e1","type":"artist","uuid":"f4da4041-4c34-4b17-bcf6-76768d3a9180"}
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 0xcef2b97bced981c4c4d72b0137e0d1f8a7d58c3afd112ff2533e87c0524216f5. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4da4041-4c34-4b17-bcf6-76768d3a9180.json and https://artists.proofprofile.net/proofs/artist/f4da4041-4c34-4b17-bcf6-76768d3a9180.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xcef2b97bced981c4c4d72b0137e0d1f8a7d58c3afd112ff2533e87c0524216f5","name":"Hiền Mai","registered_at":"2026-06-21T14:42:39Z","symbol":"NIM1950095","token_address":"0x9e17f9946377c1c3e1caf7be87fa42e9dbff47e1","type":"artist","uuid":"f4da4041-4c34-4b17-bcf6-76768d3a9180"}
album: Sau Một Ngày Dài
  type: MusicAlbum
  date published: 2018-03-01
album: Văn Thơ
  type: MusicAlbum
  date published: 2018-03-01
album: Em Đâu Phải Quân Cờ (From "Cậu Chủ Ma Cà Rồng")
  type: MusicAlbum
  date published: 2019-08-18
album: Già Cùng Anh Nếu Anh Cũng Muốn Già Cùng Em
  type: MusicAlbum
  date published: 2019-11-05
album: Có Đi Xa Mới Trở Về Nhà
  type: MusicAlbum
  date published: 2020-01-17
album: Mười Hai Năm Học
  type: MusicAlbum
  date published: 2020-06-20
album: Sau Một Ngày Dài
  type: MusicAlbum
  date published: 2020-11-08
album: Thuận Em Thuận Anh
  type: MusicAlbum
  date published: 2020-12-24
album: Thuận Em Thuận Anh (Acoustic Version)
  type: MusicAlbum
  date published: 2021-01-09
album: Mừng Tết Việt Nam (feat. Lâm Bảo Ngọc, Ngô Anh Đạt, Bảo Ngọc, Công Hòa)
  type: MusicAlbum
  date published: 2021-02-02
album: Cô Đơn Đến Từ Đâu
  type: MusicAlbum
  date published: 2021-03-07
album: Chỉ Cần Anh
  type: MusicAlbum
  date published: 2021-03-14
track: Rơi - Nimbia Retouch
  type: MusicRecording
  duration: PT3M39S
  duration ms: 219428
  explicit: false
  by artist: Nimbia
  by artist: Hiền Mai
  in album: Rơi (Nimbia Retouch)
    type: MusicAlbum
    date published: 2019-09-12
  genre: vinahouse
  genre: v-pop
  genre: vietnamese-hip-hop
  genre: vietnam-indie
  isrc code: FR96X1937440
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T19:07:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x444d5df447cd427783a46bbd52335031dd1c41e31120c8aa4b7a78f598577a1f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1937440
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 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 0x444d5df447cd427783a46bbd52335031dd1c41e31120c8aa4b7a78f598577a1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR96X1937440.
    date published: 2026-07-08T03:22:41Z
  audio: Rơi - Nimbia Retouch
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 121.317
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.276
    additional property: Energy
      type: PropertyValue
      value: 0.828
    additional property: Speechiness
      type: PropertyValue
      value: 0.059
    additional property: Acousticness
      type: PropertyValue
      value: 0.151
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.901
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.082
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.45
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor