Ken Arai
type: MusicGroup
popularity: 3
followers: 564
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x838faaabe842cad1688b4d9ea467c6e3d15121bff44629ffaffaeb0424fe6ebe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/249d4f99-b907-4223-893a-fd6aadd75748.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/249d4f99-b907-4223-893a-fd6aadd75748.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/249d4f99-b907-4223-893a-fd6aadd75748
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x838faaabe842cad1688b4d9ea467c6e3d15121bff44629ffaffaeb0424fe6ebe","name":"Ken Arai","registered_at":"2026-06-16T02:15:55Z","symbol":"NIM0905832","token_address":"0x1c6d319d6d6d91214bf1a02b7779f159994a3d72","type":"artist","uuid":"249d4f99-b907-4223-893a-fd6aadd75748"}
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 0x838faaabe842cad1688b4d9ea467c6e3d15121bff44629ffaffaeb0424fe6ebe. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/249d4f99-b907-4223-893a-fd6aadd75748.json and https://artists.proofprofile.net/proofs/artist/249d4f99-b907-4223-893a-fd6aadd75748.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:18:37Z
  text: {"copyright_id":"0x838faaabe842cad1688b4d9ea467c6e3d15121bff44629ffaffaeb0424fe6ebe","name":"Ken Arai","registered_at":"2026-06-16T02:15:55Z","symbol":"NIM0905832","token_address":"0x1c6d319d6d6d91214bf1a02b7779f159994a3d72","type":"artist","uuid":"249d4f99-b907-4223-893a-fd6aadd75748"}
album: TV Drama "Kagi no Kakatta Heya" (Original Soundtrack)
  type: MusicAlbum
  date published: 2012-05-30
album: TV Drama "Kagi no Kakatta Heya" (Original Soundtrack) [Extra Track]
  type: MusicAlbum
  date published: 2012-06-27
album: TV Drama "Kagi no Kakatta Heya SP" (Original Soundtrack) [Extra Track]
  type: MusicAlbum
  date published: 2013-12-18
album: "Do Not Say Mystery" The Movie Original Soundtrack
  type: MusicAlbum
  date published: 2023-09-13
  track: Far Away - Movie Version
    type: MusicRecording
    duration: PT3M49S
    duration ms: 229219
    explicit: false
    by artist: Ken Arai
    in album: "Do Not Say Mystery" The Movie Original Soundtrack
      type: MusicAlbum
      date published: 2023-09-13
    isrc code: JPT592310335
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4e8e062bdaf34527ba8bacf61192298a2ed4ee7d6a09fa33e63580ee69a9dfd4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958975
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958975
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPT592310335
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T06:12:52Z
    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 0x4e8e062bdaf34527ba8bacf61192298a2ed4ee7d6a09fa33e63580ee69a9dfd4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPT592310335.
      date published: 2026-07-21T06:12:52Z
    audio: Far Away - Movie Version
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.018
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.197
      additional property: Energy
        type: PropertyValue
        value: 0.488
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.811
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.697
      additional property: Liveness
        type: PropertyValue
        value: 0.334
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.319
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.213
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major