Khói Stone
type: MusicGroup
genre: vietnamese hip hop
genre: v-pop
popularity: 4
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x348314aeb62ca89d325b4e8930d1e2ebdb089089cffffc433d290a47df84067c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954004
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954004
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:01:04Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x348314aeb62ca89d325b4e8930d1e2ebdb089089cffffc433d290a47df84067c","name":"Khói Stone","registered_at":"2026-06-16T07:11:55Z","symbol":"NIM0976532","token_address":"0x7f7ce74a5f52a3d4cc1cdad793835c1ca00665b3","type":"artist","uuid":"31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291"}
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 0x348314aeb62ca89d325b4e8930d1e2ebdb089089cffffc433d290a47df84067c. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291.json and https://artists.proofprofile.net/proofs/artist/31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T21:01:04Z
  text: {"copyright_id":"0x348314aeb62ca89d325b4e8930d1e2ebdb089089cffffc433d290a47df84067c","name":"Khói Stone","registered_at":"2026-06-16T07:11:55Z","symbol":"NIM0976532","token_address":"0x7f7ce74a5f52a3d4cc1cdad793835c1ca00665b3","type":"artist","uuid":"31c0e3d6-cfa1-4e83-8b8e-c8a6598ae291"}
album: Nhớ Nhau Không
  type: MusicAlbum
  date published: 2021-01-04
  track: Em Có Muốn
    type: MusicRecording
    duration: PT3M1S
    duration ms: 181158
    explicit: false
    by artist: Khói Stone
    in album: Nhớ Nhau Không
      type: MusicAlbum
      date published: 2021-01-04
    genre: vietnamese hip hop
    genre: v-pop
    isrc code: FR96X2193615
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T06:07:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9d2cb795319cc43651feff05af4932b2beb40b83d711cc042a6d0c70b8463828
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958110
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958110
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2193615
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T06:57:12Z
    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 0x9d2cb795319cc43651feff05af4932b2beb40b83d711cc042a6d0c70b8463828. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2193615 — a six-check JSON result.
      date published: 2026-07-15T06:57:12Z
    audio: Em Có Muốn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.049
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.733
      additional property: Energy
        type: PropertyValue
        value: 0.529
      additional property: Speechiness
        type: PropertyValue
        value: 0.394
      additional property: Acousticness
        type: PropertyValue
        value: 0.129
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.522
      additional property: Liveness
        type: PropertyValue
        value: 0.115
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.09
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.636
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Anh Sẽ Là
  type: MusicAlbum
  date published: 2021-03-03