黒澤ダイヤ (CV.小宮有紗)
type: MusicGroup
popularity: 24
followers: 3697
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ddc2454077c6cf5ddca788881e66d11ed787a0ebe55019a14b473585b1b695d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00f51f41-3736-465e-b2d3-505ae280a84c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/00f51f41-3736-465e-b2d3-505ae280a84c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/00f51f41-3736-465e-b2d3-505ae280a84c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ddc2454077c6cf5ddca788881e66d11ed787a0ebe55019a14b473585b1b695d","name":"黒澤ダイヤ (CV.小宮有紗)","registered_at":"2026-06-12T14:50:56Z","symbol":"NIM0001726","token_address":"0xb9a833baa0793d3823f106ad6e65ce16ad8f2f53","type":"artist","uuid":"00f51f41-3736-465e-b2d3-505ae280a84c"}
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 0x6ddc2454077c6cf5ddca788881e66d11ed787a0ebe55019a14b473585b1b695d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00f51f41-3736-465e-b2d3-505ae280a84c.json and https://artists.proofprofile.net/proofs/artist/00f51f41-3736-465e-b2d3-505ae280a84c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x6ddc2454077c6cf5ddca788881e66d11ed787a0ebe55019a14b473585b1b695d","name":"黒澤ダイヤ (CV.小宮有紗)","registered_at":"2026-06-12T14:50:56Z","symbol":"NIM0001726","token_address":"0xb9a833baa0793d3823f106ad6e65ce16ad8f2f53","type":"artist","uuid":"00f51f41-3736-465e-b2d3-505ae280a84c"}
album: LoveLive! Sunshine!! Third Solo Concert Album ～THE STORY OF “OVER THE RAINBOW”～ starring Kurosawa Dia
  type: MusicAlbum
  date published: 2023-01-01
  track: Pure heart Pure wish
    type: MusicRecording
    duration: PT3M45S
    duration ms: 225977
    explicit: false
    by artist: 黒澤ダイヤ (CV.小宮有紗)
    in album: LoveLive! Sunshine!! Third Solo Concert Album ～THE STORY OF “OVER THE RAINBOW”～ starring Kurosawa Dia
      type: MusicAlbum
      date published: 2023-01-01
    isrc code: JPI102202985
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-12T07:27:01+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x553c95bc261608f3947f9ceb3ff2765fe9a6d63ba808534973998b82a4aa4438
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957671
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957671
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102202985
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T07:35:31Z
    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 0x553c95bc261608f3947f9ceb3ff2765fe9a6d63ba808534973998b82a4aa4438. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPI102202985.
      date published: 2026-07-12T07:35:31Z
    audio: Pure heart Pure wish
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 182.085
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.95
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.027
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.349
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.652
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.333
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: LoveLive! Sunshine!! Fourth Solo Concert Album ～THE STORY OF SUNSHINE!!～ starring Kurosawa Dia
  type: MusicAlbum
  date published: 2025-01-01