221小伙伴
type: MusicGroup
genre: mandopop
popularity: 3
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc558d9ad373350fc09b129c376004c545e37101428a1c96d7fdac82d230fb955
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b61a753a-feeb-460a-a95a-63701b1bf9ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b61a753a-feeb-460a-a95a-63701b1bf9ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b61a753a-feeb-460a-a95a-63701b1bf9ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc558d9ad373350fc09b129c376004c545e37101428a1c96d7fdac82d230fb955","name":"221小伙伴","registered_at":"2026-06-20T14:33:49Z","symbol":"NIM1634853","token_address":"0x9f6e8e76f99d19dcc6237f554c2822ca3d805801","type":"artist","uuid":"b61a753a-feeb-460a-a95a-63701b1bf9ed"}
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 0xc558d9ad373350fc09b129c376004c545e37101428a1c96d7fdac82d230fb955. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b61a753a-feeb-460a-a95a-63701b1bf9ed.json and https://artists.proofprofile.net/proofs/artist/b61a753a-feeb-460a-a95a-63701b1bf9ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0xc558d9ad373350fc09b129c376004c545e37101428a1c96d7fdac82d230fb955","name":"221小伙伴","registered_at":"2026-06-20T14:33:49Z","symbol":"NIM1634853","token_address":"0x9f6e8e76f99d19dcc6237f554c2822ca3d805801","type":"artist","uuid":"b61a753a-feeb-460a-a95a-63701b1bf9ed"}
album: 遥远的你
  type: MusicAlbum
  date published: 2018-12-12
  track: 遥远的你
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216530
    explicit: false
    by artist: 221小伙伴
    in album: 遥远的你
      type: MusicAlbum
      date published: 2018-12-12
    genre: mandopop
    isrc code: HKG731800090
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T04:35:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0490e421bdf38e79542ea781d1cad17327a33695a1b58f727c851bd03e3d7c25
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958544
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958544
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG731800090
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:14:37Z
    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 0x0490e421bdf38e79542ea781d1cad17327a33695a1b58f727c851bd03e3d7c25. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HKG731800090.
      date published: 2026-07-18T12:14:37Z
    audio: 遥远的你
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.038
      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: 0.67
      additional property: Energy
        type: PropertyValue
        value: 0.373
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.733
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.19
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.756
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 多久多久
  type: MusicAlbum
  date published: 2019-04-12
album: 再见，六月
  type: MusicAlbum
  date published: 2019-06-09