帰国子女
type: MusicGroup
popularity: 2
followers: 154
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc42d594e7709955a1bc01f02bb88636f0dfa7540e7366c7506feb850295a5034
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954055
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954055
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43915aba-0d55-4e39-9e23-ba66e2b5bcca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43915aba-0d55-4e39-9e23-ba66e2b5bcca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43915aba-0d55-4e39-9e23-ba66e2b5bcca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:51:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc42d594e7709955a1bc01f02bb88636f0dfa7540e7366c7506feb850295a5034","name":"帰国子女","registered_at":"2026-06-16T13:08:32Z","symbol":"NIM1061620","token_address":"0x141cbac202315a9681dd48275a61d2b560472456","type":"artist","uuid":"43915aba-0d55-4e39-9e23-ba66e2b5bcca"}
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 0xc42d594e7709955a1bc01f02bb88636f0dfa7540e7366c7506feb850295a5034. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43915aba-0d55-4e39-9e23-ba66e2b5bcca.json and https://artists.proofprofile.net/proofs/artist/43915aba-0d55-4e39-9e23-ba66e2b5bcca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc42d594e7709955a1bc01f02bb88636f0dfa7540e7366c7506feb850295a5034","name":"帰国子女","registered_at":"2026-06-16T13:08:32Z","symbol":"NIM1061620","token_address":"0x141cbac202315a9681dd48275a61d2b560472456","type":"artist","uuid":"43915aba-0d55-4e39-9e23-ba66e2b5bcca"}
album: 惑わす電波塔
  type: MusicAlbum
  date published: 2023-08-21
album: 惑わす電波塔
  type: MusicAlbum
  date published: 2023-08-25
album: 体育理論
  type: MusicAlbum
  date published: 2024-12-29
album: 薔薇と野獣 / BABY BLUE
  type: MusicAlbum
  date published: 2025-09-17
  track: BABY BLUE
    type: MusicRecording
    duration: PT5M26S
    duration ms: 326984
    explicit: false
    by artist: 帰国子女
    in album: 薔薇と野獣 / BABY BLUE
      type: MusicAlbum
      date published: 2025-09-17
    isrc code: JPV502500303
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T12:27:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x753a79538403121cd1568a153d9941aaa8403de764d2964a7f069189aec518bf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958880
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958880
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPV502500303
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T15:29:07Z
    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 0x753a79538403121cd1568a153d9941aaa8403de764d2964a7f069189aec518bf. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:29:07Z), 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/JPV502500303.
      date published: 2026-07-20T15:29:07Z
    audio: BABY BLUE
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 172.071
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.487
      additional property: Energy
        type: PropertyValue
        value: 0.958
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.092
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.624
      additional property: Liveness
        type: PropertyValue
        value: 0.456
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.569
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.699
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major