Kaoru Urakawa
type: MusicGroup
popularity: 3
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x19971deade29b4fce63d9a83517767a4fdaecaf04f00a5de2468999a33843f4a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x19971deade29b4fce63d9a83517767a4fdaecaf04f00a5de2468999a33843f4a","name":"Kaoru Urakawa","registered_at":"2026-06-20T12:46:20Z","symbol":"NIM1614508","token_address":"0x598a7f149fc4989c15313e1a96620c1680b49f74","type":"artist","uuid":"b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5"}
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 0x19971deade29b4fce63d9a83517767a4fdaecaf04f00a5de2468999a33843f4a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5.json and https://artists.proofprofile.net/proofs/artist/b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x19971deade29b4fce63d9a83517767a4fdaecaf04f00a5de2468999a33843f4a","name":"Kaoru Urakawa","registered_at":"2026-06-20T12:46:20Z","symbol":"NIM1614508","token_address":"0x598a7f149fc4989c15313e1a96620c1680b49f74","type":"artist","uuid":"b1d92ec8-f92f-4b14-a89e-34cc9e5aaad5"}
track: Rhapsodic Celebration
  type: MusicRecording
  duration: PT5M58S
  duration ms: 358826
  explicit: false
  by artist: Robert Sheldon
  by artist: Japan Air Self-Defense Force Central Band
  by artist: Kaoru Urakawa
  in album: CAFUA Selection 2012
    type: MusicAlbum
    date published: 2018-03-02
  genre: concert-band
  isrc code: JPG601218110
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:03:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9918b57e351efd2abf6891cb2c6c16240733fa965f1f8e5c60f0261126935dc0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957124
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957124
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG601218110
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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 0x9918b57e351efd2abf6891cb2c6c16240733fa965f1f8e5c60f0261126935dc0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG601218110.
    date published: 2026-07-08T03:53:27Z
  audio: Rhapsodic Celebration
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 101.939
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.144
    additional property: Energy
      type: PropertyValue
      value: 0.228
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.972
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.873
    additional property: Liveness
      type: PropertyValue
      value: 0.164
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.039
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.941
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major