Ngọc Khánh Chi
type: MusicGroup
genre: v-pop
popularity: 15
followers: 211
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90df0d779b6ba8a8ef35417c0a50c91eea35bb11bba6d4c4db317a60ec2e8b68
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7779e25-13b2-4063-9146-75be3f6d939f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e7779e25-13b2-4063-9146-75be3f6d939f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e7779e25-13b2-4063-9146-75be3f6d939f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90df0d779b6ba8a8ef35417c0a50c91eea35bb11bba6d4c4db317a60ec2e8b68","name":"Ngọc Khánh Chi","registered_at":"2026-06-15T04:51:18Z","symbol":"NIM0687560","token_address":"0xbc90b545c9647d90e4ae3c78869cabe71783f087","type":"artist","uuid":"e7779e25-13b2-4063-9146-75be3f6d939f"}
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 0x90df0d779b6ba8a8ef35417c0a50c91eea35bb11bba6d4c4db317a60ec2e8b68. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7779e25-13b2-4063-9146-75be3f6d939f.json and https://artists.proofprofile.net/proofs/artist/e7779e25-13b2-4063-9146-75be3f6d939f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x90df0d779b6ba8a8ef35417c0a50c91eea35bb11bba6d4c4db317a60ec2e8b68","name":"Ngọc Khánh Chi","registered_at":"2026-06-15T04:51:18Z","symbol":"NIM0687560","token_address":"0xbc90b545c9647d90e4ae3c78869cabe71783f087","type":"artist","uuid":"e7779e25-13b2-4063-9146-75be3f6d939f"}
album: Cha Và Con Gái
  type: MusicAlbum
  date published: 2020-01-01
album: Mẹ Yêu Ơi
  type: MusicAlbum
  date published: 2020-01-01
album: Nàng Thơ Xứ Huế
  type: MusicAlbum
  date published: 2020-03-21
album: Nàng Thơ Xứ Huế
  type: MusicAlbum
  date published: 2020-03-21
album: Cha Và Con Gái
  type: MusicAlbum
  date published: 2020-04-02
album: Quê Tôi
  type: MusicAlbum
  date published: 2020-08-06
album: Sức Mạnh Việt Nam
  type: MusicAlbum
  date published: 2021-06-15
album: Việt Nam Tôi (Cover)
  type: MusicAlbum
  date published: 2024-09-17
album: Rồi Mai Khi Con Lớn
  type: MusicAlbum
  date published: 2024-10-19
album: Mẹ Ơi Tết Con Sẽ Về (Female Ver)
  type: MusicAlbum
  date published: 2025-01-15
album: Đông Này Anh Đến Không
  type: MusicAlbum
  date published: 2025-01-24
album: Cô Gái Tháng 3 (Female Version)
  type: MusicAlbum
  date published: 2025-03-13
album: Việt Nam Tôi (Pandora Remix)
  type: MusicAlbum
  date published: 2025-06-20
album: Việt Nam Tôi (H2O Remix)
  type: MusicAlbum
  date published: 2025-06-20
album: Mẹ Có Thấy Không?
  type: MusicAlbum
  date published: 2025-10-15
  track: Mẹ Có Thấy Không?
    type: MusicRecording
    duration: PT4M37S
    duration ms: 277403
    explicit: false
    by artist: Ngọc Khánh Chi
    in album: Mẹ Có Thấy Không?
      type: MusicAlbum
      date published: 2025-10-15
    genre: v-pop
    isrc code: QZYHM2509792
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T10:39:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd3b9d549cf2488fdfc8d627cf41be3bf2429f19515b52a82709be4ac56fad6cc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958541
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958541
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYHM2509792
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T11:37:54Z
    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 0xd3b9d549cf2488fdfc8d627cf41be3bf2429f19515b52a82709be4ac56fad6cc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZYHM2509792.
      date published: 2026-07-18T11:37:54Z
    audio: Mẹ Có Thấy Không?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.129
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.566
      additional property: Energy
        type: PropertyValue
        value: 0.32
      additional property: Speechiness
        type: PropertyValue
        value: 0.06
      additional property: Acousticness
        type: PropertyValue
        value: 0.86
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.08
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.469
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.859
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major