Cao Vũ
type: MusicGroup
genre: v-pop
popularity: 2
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d9890e31644b19337ab1b596abc1d48bda94f0ea62cfd680bd2c2e5cf764695
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04390df2-6b6b-4424-a5ce-d3531942abe1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04390df2-6b6b-4424-a5ce-d3531942abe1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04390df2-6b6b-4424-a5ce-d3531942abe1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d9890e31644b19337ab1b596abc1d48bda94f0ea62cfd680bd2c2e5cf764695","name":"Cao Vũ","registered_at":"2026-06-15T14:59:25Z","symbol":"NIM0744381","token_address":"0x809d96faa3acc9407618c062bfb5745926f22d39","type":"artist","uuid":"04390df2-6b6b-4424-a5ce-d3531942abe1"}
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 0x4d9890e31644b19337ab1b596abc1d48bda94f0ea62cfd680bd2c2e5cf764695. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04390df2-6b6b-4424-a5ce-d3531942abe1.json and https://artists.proofprofile.net/proofs/artist/04390df2-6b6b-4424-a5ce-d3531942abe1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x4d9890e31644b19337ab1b596abc1d48bda94f0ea62cfd680bd2c2e5cf764695","name":"Cao Vũ","registered_at":"2026-06-15T14:59:25Z","symbol":"NIM0744381","token_address":"0x809d96faa3acc9407618c062bfb5745926f22d39","type":"artist","uuid":"04390df2-6b6b-4424-a5ce-d3531942abe1"}
album: Tình Đã Đổi Thay
  type: MusicAlbum
  date published: 2019-01-01
album: Trái Tim Biết Khóc
  type: MusicAlbum
  date published: 2020-01-01
album: Tình Đã Đổi Thay
  type: MusicAlbum
  date published: 2022
album: Cứ Bên Người Ta
  type: MusicAlbum
  date published: 2022
album: Không Thể Giữ Em
  type: MusicAlbum
  date published: 2022
album: Sầu Thiên Thu
  type: MusicAlbum
  date published: 2022
album: Bình Minh Tình Yêu
  type: MusicAlbum
  date published: 2022
album: Mặn Nồng Duyên Quê
  type: MusicAlbum
  date published: 2022-01-01
  track: Thật Không Em
    type: MusicRecording
    duration: PT4M31S
    duration ms: 271671
    explicit: false
    by artist: Cao Vũ
    in album: Mặn Nồng Duyên Quê
      type: MusicAlbum
      date published: 2022-01-01
    genre: v-pop
    isrc code: FRX202449302
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T14:39:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2a8951a2f0d6b7d5ee38afcee5ed5e24e2672d76de217fac8183ee3903b6ef1a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958901
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958901
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX202449302
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:07:00Z
    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 0x2a8951a2f0d6b7d5ee38afcee5ed5e24e2672d76de217fac8183ee3903b6ef1a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FRX202449302.
      date published: 2026-07-20T15:07:00Z
    audio: Thật Không Em
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.541
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.439
      additional property: Energy
        type: PropertyValue
        value: 0.553
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.352
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.24
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.926
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor