Cai Luong 1975
type: MusicGroup
popularity: 7
followers: 1923
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b34f1bb0b7395f52c46a063a05856aaccd36a806ae022542937446782058e46
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954650
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954650
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d98efc88-d12a-4d6b-a7bf-e4268af8865f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d98efc88-d12a-4d6b-a7bf-e4268af8865f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d98efc88-d12a-4d6b-a7bf-e4268af8865f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:51:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1b34f1bb0b7395f52c46a063a05856aaccd36a806ae022542937446782058e46","name":"Cai Luong 1975","registered_at":"2026-06-21T03:58:28Z","symbol":"NIM1812630","token_address":"0x492ac3e49780546b06a30f6ea6e1bc7fbeb14dea","type":"artist","uuid":"d98efc88-d12a-4d6b-a7bf-e4268af8865f"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b34f1bb0b7395f52c46a063a05856aaccd36a806ae022542937446782058e46. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98efc88-d12a-4d6b-a7bf-e4268af8865f.json and https://artists.proofprofile.net/proofs/artist/d98efc88-d12a-4d6b-a7bf-e4268af8865f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:51:12Z
  text: {"copyright_id":"0x1b34f1bb0b7395f52c46a063a05856aaccd36a806ae022542937446782058e46","name":"Cai Luong 1975","registered_at":"2026-06-21T03:58:28Z","symbol":"NIM1812630","token_address":"0x492ac3e49780546b06a30f6ea6e1bc7fbeb14dea","type":"artist","uuid":"d98efc88-d12a-4d6b-a7bf-e4268af8865f"}
album: Thuong Qua Viet Nam - Cai Luong
  type: MusicAlbum
  date published: 2012-10-04
  track: Ăn Năn - Kim Tử Long - Ngọc Huyền
    type: MusicRecording
    duration: PT8M22S
    duration ms: 502099
    explicit: false
    by artist: Cai Luong 1975
    in album: Thuong Qua Viet Nam - Cai Luong
      type: MusicAlbum
      date published: 2012-10-04
    isrc code: GBSMU1170656
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T05:14:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x584d399503d5605375accbd7a570f5154c68bd836ce5bb6ac13e79edadbedee3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958977
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958977
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU1170656
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T06:27:23Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584d399503d5605375accbd7a570f5154c68bd836ce5bb6ac13e79edadbedee3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBSMU1170656.
      date published: 2026-07-21T06:27:23Z
    audio: Ăn Năn - Kim Tử Long - Ngọc Huyền
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.781
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.396
      additional property: Energy
        type: PropertyValue
        value: 0.366
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.793
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.242
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.657
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Khoi Lam Chieu - 1975
  type: MusicAlbum
  date published: 2012-10-04