Mai Khôi
type: MusicGroup
genre: v-pop
description: Đỗ Nguyễn Mai Khôi (born 1983), known professionally as Mai Khoi, is a Vietnamese singer, artist, and political activist. Described as the "Lady Gaga of Vietnam" and also compared to Russian artist-ac
popularity: 4
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ccedd77ae4d1b295d021836079f32f6df640697a66de52fe89171affe0d9a00
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/f9fe4dea-59d4-422c-9cc4-10db328c4626.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9fe4dea-59d4-422c-9cc4-10db328c4626.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9fe4dea-59d4-422c-9cc4-10db328c4626
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5ccedd77ae4d1b295d021836079f32f6df640697a66de52fe89171affe0d9a00","name":"Mai Khôi","registered_at":"2026-06-21T17:00:48Z","symbol":"NIM1981814","token_address":"0x7bc22ae867b26f0a5b25f6d17e98ef2d6e93d978","type":"artist","uuid":"f9fe4dea-59d4-422c-9cc4-10db328c4626"}
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 0x5ccedd77ae4d1b295d021836079f32f6df640697a66de52fe89171affe0d9a00. 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/f9fe4dea-59d4-422c-9cc4-10db328c4626.json and https://artists.proofprofile.net/proofs/artist/f9fe4dea-59d4-422c-9cc4-10db328c4626.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x5ccedd77ae4d1b295d021836079f32f6df640697a66de52fe89171affe0d9a00","name":"Mai Khôi","registered_at":"2026-06-21T17:00:48Z","symbol":"NIM1981814","token_address":"0x7bc22ae867b26f0a5b25f6d17e98ef2d6e93d978","type":"artist","uuid":"f9fe4dea-59d4-422c-9cc4-10db328c4626"}
album: HOA DẠI (MỘT NGÀY KHÔNG CÓ EM Ost)
  type: MusicAlbum
  date published: 2024-07-23
  track: HOA DẠI - MỘT NGÀY KHÔNG CÓ EM Ost
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210581
    explicit: false
    by artist: Mai Khôi
    in album: HOA DẠI (MỘT NGÀY KHÔNG CÓ EM Ost)
      type: MusicAlbum
      date published: 2024-07-23
    genre: v-pop
    isrc code: QZYHM2421495
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T08:20:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x78cef7400f66f86365b57ff325d1d40bf026b055f73da33ae286497adb0eb675
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958388
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958388
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYHM2421495
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T09:14:21Z
    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 0x78cef7400f66f86365b57ff325d1d40bf026b055f73da33ae286497adb0eb675. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZYHM2421495.
      date published: 2026-07-17T09:14:21Z
    audio: HOA DẠI - MỘT NGÀY KHÔNG CÓ EM Ost
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.415
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.401
      additional property: Energy
        type: PropertyValue
        value: 0.268
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.776
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.142
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.299
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.746
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major