K-Hoàng
type: MusicGroup
genre: v-pop
popularity: 3
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x834824942dbc2ba30d27836d69936805ff3a8980d6b488437f905b48f50ce57e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a837191-3988-4b8a-a109-d6dee33ab65a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3a837191-3988-4b8a-a109-d6dee33ab65a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3a837191-3988-4b8a-a109-d6dee33ab65a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x834824942dbc2ba30d27836d69936805ff3a8980d6b488437f905b48f50ce57e","name":"K-Hoàng","registered_at":"2026-06-16T09:59:00Z","symbol":"NIM1016426","token_address":"0x040f1c6d305da7bb988304f9900770be9ffc803f","type":"artist","uuid":"3a837191-3988-4b8a-a109-d6dee33ab65a"}
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 0x834824942dbc2ba30d27836d69936805ff3a8980d6b488437f905b48f50ce57e. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a837191-3988-4b8a-a109-d6dee33ab65a.json and https://artists.proofprofile.net/proofs/artist/3a837191-3988-4b8a-a109-d6dee33ab65a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
  text: {"copyright_id":"0x834824942dbc2ba30d27836d69936805ff3a8980d6b488437f905b48f50ce57e","name":"K-Hoàng","registered_at":"2026-06-16T09:59:00Z","symbol":"NIM1016426","token_address":"0x040f1c6d305da7bb988304f9900770be9ffc803f","type":"artist","uuid":"3a837191-3988-4b8a-a109-d6dee33ab65a"}
album: Cửu Vĩ Hồ
  type: MusicAlbum
  date published: 2022-08-19
  track: Cửu Vĩ Hồ
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280820
    explicit: false
    by artist: K-Hoàng
    in album: Cửu Vĩ Hồ
      type: MusicAlbum
      date published: 2022-08-19
    genre: v-pop
    isrc code: VNA1M2106982
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:31:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb13358f01ef53a3b206b2f1eb6df9af1a451c43c33c6da35f9909eee680df20a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/VNA1M2106982
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0xb13358f01ef53a3b206b2f1eb6df9af1a451c43c33c6da35f9909eee680df20a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/VNA1M2106982.
      date published: 2026-07-17T19:12:23Z
    audio: Cửu Vĩ Hồ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 159.917
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.602
      additional property: Energy
        type: PropertyValue
        value: 0.772
      additional property: Speechiness
        type: PropertyValue
        value: 0.113
      additional property: Acousticness
        type: PropertyValue
        value: 0.181
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.323
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.085
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cửu Vĩ Hồ
  type: MusicAlbum
  date published: 2022-08-19