black tail kangaroo
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37e5be26e172a8fabb05742ae995a9614c1c87c1087e6bea6be4461a0f42c9c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb2e04b1-b590-4b91-9ca8-f53733723096.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb2e04b1-b590-4b91-9ca8-f53733723096.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb2e04b1-b590-4b91-9ca8-f53733723096
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x37e5be26e172a8fabb05742ae995a9614c1c87c1087e6bea6be4461a0f42c9c1","name":"black tail kangaroo","registered_at":"2026-06-21T10:48:35Z","symbol":"NIM1902837","token_address":"0x1d6f21cff5695d74a248b4cea2ab226b14e90667","type":"artist","uuid":"eb2e04b1-b590-4b91-9ca8-f53733723096"}
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 0x37e5be26e172a8fabb05742ae995a9614c1c87c1087e6bea6be4461a0f42c9c1. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb2e04b1-b590-4b91-9ca8-f53733723096.json and https://artists.proofprofile.net/proofs/artist/eb2e04b1-b590-4b91-9ca8-f53733723096.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x37e5be26e172a8fabb05742ae995a9614c1c87c1087e6bea6be4461a0f42c9c1","name":"black tail kangaroo","registered_at":"2026-06-21T10:48:35Z","symbol":"NIM1902837","token_address":"0x1d6f21cff5695d74a248b4cea2ab226b14e90667","type":"artist","uuid":"eb2e04b1-b590-4b91-9ca8-f53733723096"}
album: 通り雨
  type: MusicAlbum
  date published: 2020-04-01
  track: 通り雨
    type: MusicRecording
    duration: PT6M34S
    duration ms: 394285
    explicit: false
    by artist: black tail kangaroo
    in album: 通り雨
      type: MusicAlbum
      date published: 2020-04-01
    isrc code: TCJPK2077410
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:18:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x06c4d80a98364251d5ead674a167fc93d0adfa8e9ee1f1b02c32f14b1b7cd937
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPK2077410
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T08:19:59Z
    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 0x06c4d80a98364251d5ead674a167fc93d0adfa8e9ee1f1b02c32f14b1b7cd937. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:19:59Z), 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/TCJPK2077410.
      date published: 2026-07-16T08:19:59Z
    audio: 通り雨
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 153.936
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.504
      additional property: Energy
        type: PropertyValue
        value: 0.51
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.672
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.733
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.48
      additional property: Loudness (dB)
        type: PropertyValue
        value: -13.519
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: passing rain
  type: MusicAlbum
  date published: 2020-04-01