Chân CaCa
type: MusicGroup
genre: v-pop
popularity: 3
followers: 64
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff5696409338f9614ab6079cfcfd1a6580921e7988675ff342466f808a31c8af
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954050
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954050
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4304d5c4-3586-46fb-a930-afda5395498e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4304d5c4-3586-46fb-a930-afda5395498e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4304d5c4-3586-46fb-a930-afda5395498e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:14:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff5696409338f9614ab6079cfcfd1a6580921e7988675ff342466f808a31c8af","name":"Chân CaCa","registered_at":"2026-06-16T12:58:39Z","symbol":"NIM1059268","token_address":"0xdac4ae5527de3a5181113b52e1fd4bf4a7ef01d2","type":"artist","uuid":"4304d5c4-3586-46fb-a930-afda5395498e"}
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 0xff5696409338f9614ab6079cfcfd1a6580921e7988675ff342466f808a31c8af. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4304d5c4-3586-46fb-a930-afda5395498e.json and https://artists.proofprofile.net/proofs/artist/4304d5c4-3586-46fb-a930-afda5395498e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T05:14:33Z
  text: {"copyright_id":"0xff5696409338f9614ab6079cfcfd1a6580921e7988675ff342466f808a31c8af","name":"Chân CaCa","registered_at":"2026-06-16T12:58:39Z","symbol":"NIM1059268","token_address":"0xdac4ae5527de3a5181113b52e1fd4bf4a7ef01d2","type":"artist","uuid":"4304d5c4-3586-46fb-a930-afda5395498e"}
album: Phận Tàn Duyên Lỡ
  type: MusicAlbum
  date published: 2024-01-23
album: Phận Tàn Duyên Lỡ (Remix)
  type: MusicAlbum
  date published: 2024-01-27
album: Người Không Thương
  type: MusicAlbum
  date published: 2024-03-23
  track: Người Không Thương
    type: MusicRecording
    duration: PT3M47S
    duration ms: 227076
    explicit: false
    by artist: Chân CaCa
    in album: Người Không Thương
      type: MusicAlbum
      date published: 2024-03-23
    genre: v-pop
    isrc code: QZYHM2410021
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T16:58:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdda0422d867e1879eacafc309ec9403d3e6059e5ea4166fc2fb923a416cd98f8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959043
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959043
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZYHM2410021
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T18:40:26Z
    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 0xdda0422d867e1879eacafc309ec9403d3e6059e5ea4166fc2fb923a416cd98f8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZYHM2410021.
      date published: 2026-07-21T18:40:26Z
    audio: Người Không Thương
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.15
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.653
      additional property: Energy
        type: PropertyValue
        value: 0.546
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.681
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.38
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.696
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.526
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Người Không Thương (Đại Mèo Remix)
  type: MusicAlbum
  date published: 2024-04-07
album: Khách Qua Đường
  type: MusicAlbum
  date published: 2024-06-06
album: Chẳng Thể Như Ban Đầu
  type: MusicAlbum
  date published: 2024-10-23
album: Hạ Màn Thôi
  type: MusicAlbum
  date published: 2024-12-21