紘毅
type: MusicGroup
genre: enka
popularity: 8
followers: 371
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6dbb3e187fe97c97f7d6600a8c1ad3ae3fc3a08dc5ccccef5d7393f321e3e59a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8cb3f6c6-4393-4b2b-985d-d4fe857adecb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8cb3f6c6-4393-4b2b-985d-d4fe857adecb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8cb3f6c6-4393-4b2b-985d-d4fe857adecb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6dbb3e187fe97c97f7d6600a8c1ad3ae3fc3a08dc5ccccef5d7393f321e3e59a","name":"紘毅","registered_at":"2026-06-17T14:41:04Z","symbol":"NIM1427139","token_address":"0x8c1bca268acfeea5938a112ade833d169023313e","type":"artist","uuid":"8cb3f6c6-4393-4b2b-985d-d4fe857adecb"}
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 0x6dbb3e187fe97c97f7d6600a8c1ad3ae3fc3a08dc5ccccef5d7393f321e3e59a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cb3f6c6-4393-4b2b-985d-d4fe857adecb.json and https://artists.proofprofile.net/proofs/artist/8cb3f6c6-4393-4b2b-985d-d4fe857adecb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x6dbb3e187fe97c97f7d6600a8c1ad3ae3fc3a08dc5ccccef5d7393f321e3e59a","name":"紘毅","registered_at":"2026-06-17T14:41:04Z","symbol":"NIM1427139","token_address":"0x8c1bca268acfeea5938a112ade833d169023313e","type":"artist","uuid":"8cb3f6c6-4393-4b2b-985d-d4fe857adecb"}
album: 花束
  type: MusicAlbum
  date published: 2018-12-12
album: 冒険者に捧ぐ歌
  type: MusicAlbum
  date published: 2018-12-12
album: ケラケラホーのうた (TVサイズ)
  type: MusicAlbum
  date published: 2019-04-06
album: ケラケラホーのうた
  type: MusicAlbum
  date published: 2019-06-05
album: いつの間にか晴れ
  type: MusicAlbum
  date published: 2020-08-19
album: いないんだって
  type: MusicAlbum
  date published: 2022-08-03
album: 日曜日 2022
  type: MusicAlbum
  date published: 2022-08-03
  track: 日曜日 2022
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280312
    explicit: false
    by artist: 紘毅
    in album: 日曜日 2022
      type: MusicAlbum
      date published: 2022-08-03
    genre: enka
    isrc code: JPZ922206709
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:52:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc178b522e440912d1168e89b141a1314f3fd1e6c9fc6252a83a8b5eb508332b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956891
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956891
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206709
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T07:16:32Z
    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 0xdc178b522e440912d1168e89b141a1314f3fd1e6c9fc6252a83a8b5eb508332b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPZ922206709.
      date published: 2026-07-06T07:16:32Z
    audio: 日曜日 2022
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 95.993
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.612
      additional property: Energy
        type: PropertyValue
        value: 0.543
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.184
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.707
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.948
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major