Yukiko Hirao
type: MusicGroup
popularity: 5
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91b485919ee6b51abde851298c9ace358e6c0eb72c71b8bbfe38a40a4a86cda6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ceca93ce-33e2-485c-b37e-dcb41ca8a5c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ceca93ce-33e2-485c-b37e-dcb41ca8a5c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ceca93ce-33e2-485c-b37e-dcb41ca8a5c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x91b485919ee6b51abde851298c9ace358e6c0eb72c71b8bbfe38a40a4a86cda6","name":"Yukiko Hirao","registered_at":"2026-06-21T00:10:26Z","symbol":"NIM1758303","token_address":"0x901e62c91b493dc8cab3cc1d1f23a0f81b79d961","type":"artist","uuid":"ceca93ce-33e2-485c-b37e-dcb41ca8a5c7"}
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 0x91b485919ee6b51abde851298c9ace358e6c0eb72c71b8bbfe38a40a4a86cda6. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ceca93ce-33e2-485c-b37e-dcb41ca8a5c7.json and https://artists.proofprofile.net/proofs/artist/ceca93ce-33e2-485c-b37e-dcb41ca8a5c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x91b485919ee6b51abde851298c9ace358e6c0eb72c71b8bbfe38a40a4a86cda6","name":"Yukiko Hirao","registered_at":"2026-06-21T00:10:26Z","symbol":"NIM1758303","token_address":"0x901e62c91b493dc8cab3cc1d1f23a0f81b79d961","type":"artist","uuid":"ceca93ce-33e2-485c-b37e-dcb41ca8a5c7"}
album: Canon
  type: MusicAlbum
  date published: 2016-11-23
album: Canon
  type: MusicAlbum
  date published: 2016-11-23
  track: Canon & Gigue in D Major, P. 37: I. Canon (Arr. for Harp)
    type: MusicRecording
    duration: PT4M28S
    duration ms: 268560
    explicit: false
    by artist: Yukiko Hirao
    in album: Canon
      type: MusicAlbum
      date published: 2016-11-23
    isrc code: JPW452003504
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T07:08:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbf6fe845bef9242746f7249ad22039b3f42fab1edfbfe315c879f28f04cd998d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW452003504
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xbf6fe845bef9242746f7249ad22039b3f42fab1edfbfe315c879f28f04cd998d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPW452003504.
      date published: 2026-07-02T16:51:38Z
    audio: Canon & Gigue in D Major, P. 37: I. Canon (Arr. for Harp)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.583
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.334
      additional property: Energy
        type: PropertyValue
        value: 0.065
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.988
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.919
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.04
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.489
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major