Takuma Wada
type: MusicGroup
popularity: 20
followers: 277
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0138b93a20bcbf1c246c871224c909d0f424f91173933dd5ca67076206efa67c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953743
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953743
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2463ebf-0709-4605-8bd0-ce67f9428db8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a2463ebf-0709-4605-8bd0-ce67f9428db8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a2463ebf-0709-4605-8bd0-ce67f9428db8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:52:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0138b93a20bcbf1c246c871224c909d0f424f91173933dd5ca67076206efa67c","name":"Takuma Wada","registered_at":"2026-06-14T21:36:32Z","symbol":"NIM0583731","token_address":"0xdf408d16a0ef374bbbec450c1d06c0280a3bdb5f","type":"artist","uuid":"a2463ebf-0709-4605-8bd0-ce67f9428db8"}
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 0x0138b93a20bcbf1c246c871224c909d0f424f91173933dd5ca67076206efa67c. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2463ebf-0709-4605-8bd0-ce67f9428db8.json and https://artists.proofprofile.net/proofs/artist/a2463ebf-0709-4605-8bd0-ce67f9428db8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:52:01Z
  text: {"copyright_id":"0x0138b93a20bcbf1c246c871224c909d0f424f91173933dd5ca67076206efa67c","name":"Takuma Wada","registered_at":"2026-06-14T21:36:32Z","symbol":"NIM0583731","token_address":"0xdf408d16a0ef374bbbec450c1d06c0280a3bdb5f","type":"artist","uuid":"a2463ebf-0709-4605-8bd0-ce67f9428db8"}
album: HASUDANCE!
  type: MusicAlbum
  date published: 2019-07-01
album: 声歌 -KOEUTA-
  type: MusicAlbum
  date published: 2020-05-15
album: VoiceSongs
  type: MusicAlbum
  date published: 2020-05-15
album: 草加よさこい ~相思草愛~
  type: MusicAlbum
  date published: 2021-05-22
album: SOKAYOSAKOI ~mutual affection~
  type: MusicAlbum
  date published: 2021-05-22
album: SUPER STAR (feat. AJ)
  type: MusicAlbum
  date published: 2023-07-01
track: きしゃポッポ
  type: MusicRecording
  duration: PT1M52S
  duration ms: 112853
  explicit: false
  by artist: Takuma Wada
  in album: のりものだいすき!～車・電車・はたらく車のうた～ キング・ベスト・セレクト・ライブラリー2021
    type: MusicAlbum
    date published: 2021-05-12
  isrc code: JPKI01715187
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T21:58:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf0dfe19e50c9be53a823fdadf523a413c2eb52e769247bc5839c39b70956093e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960155
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960155
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKI01715187
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T22:13:32Z
  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 0xf0dfe19e50c9be53a823fdadf523a413c2eb52e769247bc5839c39b70956093e. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/JPKI01715187.
    date published: 2026-07-29T22:13:32Z
  audio: きしゃポッポ
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.238
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.952
    additional property: Energy
      type: PropertyValue
      value: 0.485
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.329
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.135
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.912
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.102
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major