千葉げん太
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 4
followers: 189
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x964cb1536e3c957680b298d854c72cd15fa25943763e758ba56a686adf8cc253
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72f23a00-6af8-44cc-a930-ce37aa139e6f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72f23a00-6af8-44cc-a930-ce37aa139e6f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/72f23a00-6af8-44cc-a930-ce37aa139e6f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x964cb1536e3c957680b298d854c72cd15fa25943763e758ba56a686adf8cc253","name":"千葉げん太","registered_at":"2026-06-17T05:42:16Z","symbol":"NIM1298743","token_address":"0x37668162f0ab31af9eb5373821fa899faf5ca0e7","type":"artist","uuid":"72f23a00-6af8-44cc-a930-ce37aa139e6f"}
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 0x964cb1536e3c957680b298d854c72cd15fa25943763e758ba56a686adf8cc253. 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/72f23a00-6af8-44cc-a930-ce37aa139e6f.json and https://artists.proofprofile.net/proofs/artist/72f23a00-6af8-44cc-a930-ce37aa139e6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x964cb1536e3c957680b298d854c72cd15fa25943763e758ba56a686adf8cc253","name":"千葉げん太","registered_at":"2026-06-17T05:42:16Z","symbol":"NIM1298743","token_address":"0x37668162f0ab31af9eb5373821fa899faf5ca0e7","type":"artist","uuid":"72f23a00-6af8-44cc-a930-ce37aa139e6f"}
album: 男の覚悟／おんなの橋
  type: MusicAlbum
  date published: 2020-12-02
album: 千葉げん太 ～歌手生活45周年記念アルバム～感謝の轍
  type: MusicAlbum
  date published: 2021-01-06
album: 一匹狼／女の背中
  type: MusicAlbum
  date published: 2021-11-10
album: 立山連峰／おんな船
  type: MusicAlbum
  date published: 2023-02-08
album: 夫婦残照～令和編～／酒は明日の力水
  type: MusicAlbum
  date published: 2024-02-07
album: 祝い孫唄／母ちゃんの下駄
  type: MusicAlbum
  date published: 2025-06-04
  track: 祝い孫唄
    type: MusicRecording
    duration: PT4M37S
    duration ms: 277800
    explicit: false
    by artist: 千葉げん太
    in album: 祝い孫唄／母ちゃんの下駄
      type: MusicAlbum
      date published: 2025-06-04
    genre: enka
    genre: kayokyoku
    isrc code: JPCR02501530
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:47:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbc10db0ccfe449acbab7b01ed83f8959f99412a9b2490d3d386f96767d62d3cc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCR02501530
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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 0xbc10db0ccfe449acbab7b01ed83f8959f99412a9b2490d3d386f96767d62d3cc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPCR02501530.
      date published: 2026-07-04T11:19:20Z
    audio: 祝い孫唄
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 146.348
      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: 0.281
      additional property: Energy
        type: PropertyValue
        value: 0.669
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.267
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.18
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.504
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.688
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major