四熹丸子
type: MusicGroup
genre: cantopop
popularity: 6
followers: 41
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9912b7a0f057e1a37452bcbe672ecef0d3153f86b0aba6a88319cd772996b024
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9912b7a0f057e1a37452bcbe672ecef0d3153f86b0aba6a88319cd772996b024","name":"四熹丸子","registered_at":"2026-06-16T06:03:19Z","symbol":"NIM0960153","token_address":"0x20341282a7b3feeffbb890b6a197b78ccb402e35","type":"artist","uuid":"2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b"}
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 0x9912b7a0f057e1a37452bcbe672ecef0d3153f86b0aba6a88319cd772996b024. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b.json and https://artists.proofprofile.net/proofs/artist/2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x9912b7a0f057e1a37452bcbe672ecef0d3153f86b0aba6a88319cd772996b024","name":"四熹丸子","registered_at":"2026-06-16T06:03:19Z","symbol":"NIM0960153","token_address":"0x20341282a7b3feeffbb890b6a197b78ccb402e35","type":"artist","uuid":"2f6120d8-8ca0-437a-8fc0-e9c0ea19bc7b"}
album: 秋风 (粤语版)
  type: MusicAlbum
  date published: 2024-11-05
  track: 秋风 - 粤语版
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201029
    explicit: false
    by artist: 四熹丸子
    in album: 秋风 (粤语版)
      type: MusicAlbum
      date published: 2024-11-05
    genre: cantopop
    isrc code: DGA0R2413795
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T21:35:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x195641b9d0c8739066f1c211388ebf15cd5fa7de4ba154aa2673f115d50ca4ef
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957759
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957759
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0R2413795
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T21:46:51Z
    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 0x195641b9d0c8739066f1c211388ebf15cd5fa7de4ba154aa2673f115d50ca4ef. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DGA0R2413795.
      date published: 2026-07-12T21:46:51Z
    audio: 秋风 - 粤语版
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.084
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.29
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.895
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.241
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.533
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major