Nao Nakata
type: MusicGroup
popularity: 8
followers: 258
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc1c15a83bb543896adc33b291be9ab06b218a0943bebdb000b1486ca1153b42
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2412a3b8-d572-4b51-8d8f-01866bb9b487.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2412a3b8-d572-4b51-8d8f-01866bb9b487.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2412a3b8-d572-4b51-8d8f-01866bb9b487
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc1c15a83bb543896adc33b291be9ab06b218a0943bebdb000b1486ca1153b42","name":"Nao Nakata","registered_at":"2026-06-16T02:10:38Z","symbol":"NIM0904568","token_address":"0x11cc31a93279e6f5959ce9cb7c4cb72a1576c0d6","type":"artist","uuid":"2412a3b8-d572-4b51-8d8f-01866bb9b487"}
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 0xbc1c15a83bb543896adc33b291be9ab06b218a0943bebdb000b1486ca1153b42. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2412a3b8-d572-4b51-8d8f-01866bb9b487.json and https://artists.proofprofile.net/proofs/artist/2412a3b8-d572-4b51-8d8f-01866bb9b487.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xbc1c15a83bb543896adc33b291be9ab06b218a0943bebdb000b1486ca1153b42","name":"Nao Nakata","registered_at":"2026-06-16T02:10:38Z","symbol":"NIM0904568","token_address":"0x11cc31a93279e6f5959ce9cb7c4cb72a1576c0d6","type":"artist","uuid":"2412a3b8-d572-4b51-8d8f-01866bb9b487"}
album: 迷い猫の旅 -Stray Cat Doors １＋２- オリジナル・サウンドトラック
  type: MusicAlbum
  date published: 2020-10-29
  track: 穏やかな時
    type: MusicRecording
    duration: PT1M12S
    duration ms: 72000
    explicit: false
    by artist: Nao Nakata
    in album: 迷い猫の旅 -Stray Cat Doors １＋２- オリジナル・サウンドトラック
      type: MusicAlbum
      date published: 2020-10-29
    isrc code: TCJPM2084939
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T02:08:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x359d3eeb7c3e3acf42429363f65de7ac958d3548c3044e9579cecf7235c67aeb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPM2084939
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0x359d3eeb7c3e3acf42429363f65de7ac958d3548c3044e9579cecf7235c67aeb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPM2084939.
      date published: 2026-07-04T11:19:20Z
    audio: 穏やかな時
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.675
      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: 0.443
      additional property: Energy
        type: PropertyValue
        value: 0.049
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.881
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.491
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.445
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Stray Cat Doors 1+2 Original Soundtrack
  type: MusicAlbum
  date published: 2020-10-29