何卷卷
type: MusicGroup
genre: gufeng
popularity: 2
followers: 30
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3df099bbb41df0479035f440461c94d5e9394d1c9f062761e84de92827b06ad6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c04ddf5e-d894-41a1-9fd0-799c31658aab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c04ddf5e-d894-41a1-9fd0-799c31658aab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c04ddf5e-d894-41a1-9fd0-799c31658aab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3df099bbb41df0479035f440461c94d5e9394d1c9f062761e84de92827b06ad6","name":"何卷卷","registered_at":"2026-06-20T18:49:52Z","symbol":"NIM1685600","token_address":"0xebe8a22b4449efe2401763a2f5a71e18af87939e","type":"artist","uuid":"c04ddf5e-d894-41a1-9fd0-799c31658aab"}
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 0x3df099bbb41df0479035f440461c94d5e9394d1c9f062761e84de92827b06ad6. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c04ddf5e-d894-41a1-9fd0-799c31658aab.json and https://artists.proofprofile.net/proofs/artist/c04ddf5e-d894-41a1-9fd0-799c31658aab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x3df099bbb41df0479035f440461c94d5e9394d1c9f062761e84de92827b06ad6","name":"何卷卷","registered_at":"2026-06-20T18:49:52Z","symbol":"NIM1685600","token_address":"0xebe8a22b4449efe2401763a2f5a71e18af87939e","type":"artist","uuid":"c04ddf5e-d894-41a1-9fd0-799c31658aab"}
album: 秋风吹来相思愁
  type: MusicAlbum
  date published: 2021-04-29
album: 紅顏舊
  type: MusicAlbum
  date published: 2021-06-17
album: 紅顏舊
  type: MusicAlbum
  date published: 2021-06-17
  track: 紅顏舊（濃情版）
    type: MusicRecording
    duration: PT3M38S
    duration ms: 218413
    explicit: false
    by artist: 何卷卷
    in album: 紅顏舊
      type: MusicAlbum
      date published: 2021-06-17
    genre: gufeng
    isrc code: TWDL72105411
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T07:11:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd95ad5f1c807905dc190493beaff95e8efd04d1c0533b72cd3e732da27710664
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958985
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958985
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWDL72105411
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T08:39:15Z
    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 0xd95ad5f1c807905dc190493beaff95e8efd04d1c0533b72cd3e732da27710664. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TWDL72105411.
      date published: 2026-07-21T08:39:15Z
    audio: 紅顏舊（濃情版）
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 74.951
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.545
      additional property: Energy
        type: PropertyValue
        value: 0.184
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.773
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.134
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.665
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 没有你的余生太漫长
  type: MusicAlbum
  date published: 2021-09-10
album: 飞沙
  type: MusicAlbum
  date published: 2022-02-18