AIKA YOSHIOKA
type: MusicGroup
popularity: 12
followers: 607
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d31b0f55f617d7d75283d74edd9b916e0251efdf3c1005f8ed2f6fe1141e283
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cec7b663-9a5a-45d8-83f4-f18d39b96333.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cec7b663-9a5a-45d8-83f4-f18d39b96333.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cec7b663-9a5a-45d8-83f4-f18d39b96333
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d31b0f55f617d7d75283d74edd9b916e0251efdf3c1005f8ed2f6fe1141e283","name":"AIKA YOSHIOKA","registered_at":"2026-06-15T02:10:02Z","symbol":"NIM0649070","token_address":"0x77312c91f6bce2b8e4b56423337d973c670ce6d4","type":"artist","uuid":"cec7b663-9a5a-45d8-83f4-f18d39b96333"}
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 0x1d31b0f55f617d7d75283d74edd9b916e0251efdf3c1005f8ed2f6fe1141e283. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec7b663-9a5a-45d8-83f4-f18d39b96333.json and https://artists.proofprofile.net/proofs/artist/cec7b663-9a5a-45d8-83f4-f18d39b96333.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x1d31b0f55f617d7d75283d74edd9b916e0251efdf3c1005f8ed2f6fe1141e283","name":"AIKA YOSHIOKA","registered_at":"2026-06-15T02:10:02Z","symbol":"NIM0649070","token_address":"0x77312c91f6bce2b8e4b56423337d973c670ce6d4","type":"artist","uuid":"cec7b663-9a5a-45d8-83f4-f18d39b96333"}
album: AIKA YOSHIOKA 10th Anniversary BEST 〜Utanoshizuku〜
  type: MusicAlbum
  date published: 2019-11-13
  track: Yumenoukifune
    type: MusicRecording
    duration: PT4M18S
    duration ms: 258653
    explicit: false
    by artist: AIKA YOSHIOKA
    in album: AIKA YOSHIOKA 10th Anniversary BEST 〜Utanoshizuku〜
      type: MusicAlbum
      date published: 2019-11-13
    isrc code: JPV201100364
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T10:32:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa48366a7873810b98a7c29be62148345d9174827966f5bee36fc0c814156d2a1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV201100364
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xa48366a7873810b98a7c29be62148345d9174827966f5bee36fc0c814156d2a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPV201100364.
      date published: 2026-07-04T10:04:33Z
    audio: Yumenoukifune
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.026
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.563
      additional property: Energy
        type: PropertyValue
        value: 0.772
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.051
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.394
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.471
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.96
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor