Takashi Minagawa JP
type: MusicGroup
popularity: 4
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7651c4077b4c95c31b10cc7a6099156ef30304be38372095e3d4e639262f52b8
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/81dc417d-4674-48a0-8026-23aa94debc50.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/81dc417d-4674-48a0-8026-23aa94debc50.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/81dc417d-4674-48a0-8026-23aa94debc50
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7651c4077b4c95c31b10cc7a6099156ef30304be38372095e3d4e639262f52b8","name":"Takashi Minagawa JP","registered_at":"2026-06-17T10:55:21Z","symbol":"NIM1373379","token_address":"0x9bea1c19ad98d7d47d036dbc4ee29b6afee0581f","type":"artist","uuid":"81dc417d-4674-48a0-8026-23aa94debc50"}
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 0x7651c4077b4c95c31b10cc7a6099156ef30304be38372095e3d4e639262f52b8. 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/81dc417d-4674-48a0-8026-23aa94debc50.json and https://artists.proofprofile.net/proofs/artist/81dc417d-4674-48a0-8026-23aa94debc50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7651c4077b4c95c31b10cc7a6099156ef30304be38372095e3d4e639262f52b8","name":"Takashi Minagawa JP","registered_at":"2026-06-17T10:55:21Z","symbol":"NIM1373379","token_address":"0x9bea1c19ad98d7d47d036dbc4ee29b6afee0581f","type":"artist","uuid":"81dc417d-4674-48a0-8026-23aa94debc50"}
album: Yearn
  type: MusicAlbum
  date published: 2025-07-04
  track: Yearn
    type: MusicRecording
    duration: PT3M28S
    duration ms: 208839
    explicit: false
    by artist: Takashi Minagawa JP
    in album: Yearn
      type: MusicAlbum
      date published: 2025-07-04
    isrc code: SE57V2504413
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T22:25:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1873bdd376bb39a40e5a870456e6917cfca349cedb5e1fa00db2e24e0f904169
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958335
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958335
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE57V2504413
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T22:37:47Z
    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 0x1873bdd376bb39a40e5a870456e6917cfca349cedb5e1fa00db2e24e0f904169. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE57V2504413.
      date published: 2026-07-16T22:37:47Z
    audio: Yearn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.981
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.759
      additional property: Energy
        type: PropertyValue
        value: 0.45
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.544
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.822
      additional property: Liveness
        type: PropertyValue
        value: 0.369
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.409
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.626
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Nocturne
  type: MusicAlbum
  date published: 2025-08-01
album: Tachyon
  type: MusicAlbum
  date published: 2025-08-08
album: Psychomimesis
  type: MusicAlbum
  date published: 2025-09-05
album: Infrasilent
  type: MusicAlbum
  date published: 2025-09-19
album: Tephra
  type: MusicAlbum
  date published: 2025-09-28