Takehisa Miyamoto
type: MusicGroup
popularity: 10
followers: 987
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x265c5ff4b1e830090983306cfcd00a85beba4ac083b1aea7b2b0cf6da704e12b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89bbb6d7-7c5f-43d5-ad2a-91131325b5f1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89bbb6d7-7c5f-43d5-ad2a-91131325b5f1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/89bbb6d7-7c5f-43d5-ad2a-91131325b5f1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x265c5ff4b1e830090983306cfcd00a85beba4ac083b1aea7b2b0cf6da704e12b","name":"Takehisa Miyamoto","registered_at":"2026-06-17T13:28:52Z","symbol":"NIM1409906","token_address":"0xeacb1bf98075ade8fb389d9ab5c91447f3a71534","type":"artist","uuid":"89bbb6d7-7c5f-43d5-ad2a-91131325b5f1"}
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 0x265c5ff4b1e830090983306cfcd00a85beba4ac083b1aea7b2b0cf6da704e12b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89bbb6d7-7c5f-43d5-ad2a-91131325b5f1.json and https://artists.proofprofile.net/proofs/artist/89bbb6d7-7c5f-43d5-ad2a-91131325b5f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x265c5ff4b1e830090983306cfcd00a85beba4ac083b1aea7b2b0cf6da704e12b","name":"Takehisa Miyamoto","registered_at":"2026-06-17T13:28:52Z","symbol":"NIM1409906","token_address":"0xeacb1bf98075ade8fb389d9ab5c91447f3a71534","type":"artist","uuid":"89bbb6d7-7c5f-43d5-ad2a-91131325b5f1"}
album: SUMMER OF LOVE e.p.
  type: MusicAlbum
  date published: 2016-07-27
album: Will you marry me
  type: MusicAlbum
  date published: 2017-07-05
  track: 青春の影
    type: MusicRecording
    duration: PT4M5S
    duration ms: 245640
    explicit: false
    by artist: Takehisa Miyamoto
    in album: Will you marry me
      type: MusicAlbum
      date published: 2017-07-05
    isrc code: JPZ921705704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T18:28:03+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x62099893277585c0c596a80a979b882e361005745083a482f5bc6495e28371d5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958924
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958924
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921705704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:30:54Z
    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 0x62099893277585c0c596a80a979b882e361005745083a482f5bc6495e28371d5. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:54Z), 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/JPZ921705704.
      date published: 2026-07-20T21:30:54Z
    audio: 青春の影
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.838
      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: 0.602
      additional property: Energy
        type: PropertyValue
        value: 0.262
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.891
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.143
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.23
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.286
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: ここからはるか
  type: MusicAlbum
  date published: 2018-09-26
album: GIFT
  type: MusicAlbum
  date published: 2018-10-31
album: YELLOW
  type: MusicAlbum
  date published: 2019-07-31