雙燕
type: MusicGroup
popularity: 13
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbe2aafe84004b4f0604b731312bea34742d9401c4d6b64a750f1af6eca925b2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953633
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953633
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34a45d58-8d47-4a47-8d8a-2a5316acb768.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34a45d58-8d47-4a47-8d8a-2a5316acb768.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/34a45d58-8d47-4a47-8d8a-2a5316acb768
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:47:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbe2aafe84004b4f0604b731312bea34742d9401c4d6b64a750f1af6eca925b2","name":"雙燕","registered_at":"2026-06-14T09:57:26Z","symbol":"NIM0416980","token_address":"0xe9f3649bfd0136ebded54effe6af6f41f3911fa9","type":"artist","uuid":"34a45d58-8d47-4a47-8d8a-2a5316acb768"}
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 0xdbe2aafe84004b4f0604b731312bea34742d9401c4d6b64a750f1af6eca925b2. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34a45d58-8d47-4a47-8d8a-2a5316acb768.json and https://artists.proofprofile.net/proofs/artist/34a45d58-8d47-4a47-8d8a-2a5316acb768.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
  text: {"copyright_id":"0xdbe2aafe84004b4f0604b731312bea34742d9401c4d6b64a750f1af6eca925b2","name":"雙燕","registered_at":"2026-06-14T09:57:26Z","symbol":"NIM0416980","token_address":"0xe9f3649bfd0136ebded54effe6af6f41f3911fa9","type":"artist","uuid":"34a45d58-8d47-4a47-8d8a-2a5316acb768"}
album: 怒江春暖
  type: MusicAlbum
  date published: 1971-04-21
  track: 鴛鴦溪之二 - 台語
    type: MusicRecording
    duration: PT1M28S
    duration ms: 88693
    explicit: false
    by artist: 雙燕
    in album: 怒江春暖
      type: MusicAlbum
      date published: 1971-04-21
    isrc code: TWAN77190055
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T18:21:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa30cf274df5034fb54e054701b4a9bf9e2ee7c71518103159b63a5161157af78
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957745
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957745
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TWAN77190055
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T19:20:20Z
    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 0xa30cf274df5034fb54e054701b4a9bf9e2ee7c71518103159b63a5161157af78. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TWAN77190055.
      date published: 2026-07-12T19:20:20Z
    audio: 鴛鴦溪之二 - 台語
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.158
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.219
      additional property: Energy
        type: PropertyValue
        value: 0.028
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.951
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.333
      additional property: Loudness (dB)
        type: PropertyValue
        value: -27.542
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major