矢部浩之
type: MusicGroup
genre: kayokyoku
popularity: 2
followers: 584
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7dbd67131f1bed40cb632ec5d6dd615e0855e64b5515b8500b53910db564c11e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954028
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954028
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39fbf313-03a3-4569-805f-eb466c501791.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39fbf313-03a3-4569-805f-eb466c501791.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39fbf313-03a3-4569-805f-eb466c501791
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:08:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7dbd67131f1bed40cb632ec5d6dd615e0855e64b5515b8500b53910db564c11e","name":"矢部浩之","registered_at":"2026-06-16T09:48:47Z","symbol":"NIM1013979","token_address":"0x6d0960cb7762881b54884f617215bf68ab642e6e","type":"artist","uuid":"39fbf313-03a3-4569-805f-eb466c501791"}
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 0x7dbd67131f1bed40cb632ec5d6dd615e0855e64b5515b8500b53910db564c11e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39fbf313-03a3-4569-805f-eb466c501791.json and https://artists.proofprofile.net/proofs/artist/39fbf313-03a3-4569-805f-eb466c501791.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x7dbd67131f1bed40cb632ec5d6dd615e0855e64b5515b8500b53910db564c11e","name":"矢部浩之","registered_at":"2026-06-16T09:48:47Z","symbol":"NIM1013979","token_address":"0x6d0960cb7762881b54884f617215bf68ab642e6e","type":"artist","uuid":"39fbf313-03a3-4569-805f-eb466c501791"}
album: スタンドバイミー
  type: MusicAlbum
  date published: 2021-10-29
  track: スタンドバイミー
    type: MusicRecording
    duration: PT4M24S
    duration ms: 264666
    explicit: false
    by artist: 矢部浩之
    in album: スタンドバイミー
      type: MusicAlbum
      date published: 2021-10-29
    genre: kayokyoku
    isrc code: JPPO02103934
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T18:48:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdb0322a88342a8ba789b3c5699077cceb462a4c9591ff1014f7dd66f683af229
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956841
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956841
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPPO02103934
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T22:14:35Z
    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 0xdb0322a88342a8ba789b3c5699077cceb462a4c9591ff1014f7dd66f683af229. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPPO02103934.
      date published: 2026-07-05T22:14:35Z
    audio: スタンドバイミー
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.026
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.648
      additional property: Energy
        type: PropertyValue
        value: 0.504
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.501
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.392
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.643
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major