忘乡
type: MusicGroup
genre: gufeng
popularity: 9
followers: 165
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xacc9539739fe1a45f5f756d85e4a405d961a8999181775ce27ef637c8051c9b7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7d9ba2e-b720-453a-b987-211487de56f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a7d9ba2e-b720-453a-b987-211487de56f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a7d9ba2e-b720-453a-b987-211487de56f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xacc9539739fe1a45f5f756d85e4a405d961a8999181775ce27ef637c8051c9b7","name":"忘乡","registered_at":"2026-06-20T08:06:49Z","symbol":"NIM1561589","token_address":"0xe29e5265bb4ba0eb99d3051dd5be717f0857a4c0","type":"artist","uuid":"a7d9ba2e-b720-453a-b987-211487de56f0"}
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 0xacc9539739fe1a45f5f756d85e4a405d961a8999181775ce27ef637c8051c9b7. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7d9ba2e-b720-453a-b987-211487de56f0.json and https://artists.proofprofile.net/proofs/artist/a7d9ba2e-b720-453a-b987-211487de56f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xacc9539739fe1a45f5f756d85e4a405d961a8999181775ce27ef637c8051c9b7","name":"忘乡","registered_at":"2026-06-20T08:06:49Z","symbol":"NIM1561589","token_address":"0xe29e5265bb4ba0eb99d3051dd5be717f0857a4c0","type":"artist","uuid":"a7d9ba2e-b720-453a-b987-211487de56f0"}
album: 甜味夏天
  type: MusicAlbum
  date published: 2022-08-12
album: 花间游
  type: MusicAlbum
  date published: 2018-12-26
  track: 花间游
    type: MusicRecording
    duration: PT2M51S
    duration ms: 171000
    explicit: false
    by artist: 忘乡
    by artist: 逆时针向
    in album: 花间游
      type: MusicAlbum
      date published: 2018-12-26
    popularity: 9
    isrc code: HKG732013046
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-25T00:32:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1caf9aa7cf2b6f2b5726695ea4d8145dfd0aa00f7402354429ff1353e8fdc594
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732013046
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x1caf9aa7cf2b6f2b5726695ea4d8145dfd0aa00f7402354429ff1353e8fdc594. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKG732013046.
      date published: 2026-07-02T03:55:08Z
    audio: 花间游
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.389
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.561
      additional property: Energy
        type: PropertyValue
        value: 0.586
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.47
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.035
      additional property: Liveness
        type: PropertyValue
        value: 0.16
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.591
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.429
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major