Kiyoshi Hasegawa
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 14
followers: 3522
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe10f01f467f53b55fc127ef610ecb4795b254d14d14819fde4ca786adc2ce5c8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4c8258b4-3767-4ce6-bdc3-529ed9e6228b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4c8258b4-3767-4ce6-bdc3-529ed9e6228b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4c8258b4-3767-4ce6-bdc3-529ed9e6228b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe10f01f467f53b55fc127ef610ecb4795b254d14d14819fde4ca786adc2ce5c8","name":"Kiyoshi Hasegawa","registered_at":"2026-06-14T12:31:48Z","symbol":"NIM0453815","token_address":"0x527dc51d8a9434ceda4a9601a110df865f58de10","type":"artist","uuid":"4c8258b4-3767-4ce6-bdc3-529ed9e6228b"}
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 0xe10f01f467f53b55fc127ef610ecb4795b254d14d14819fde4ca786adc2ce5c8. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c8258b4-3767-4ce6-bdc3-529ed9e6228b.json and https://artists.proofprofile.net/proofs/artist/4c8258b4-3767-4ce6-bdc3-529ed9e6228b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0xe10f01f467f53b55fc127ef610ecb4795b254d14d14819fde4ca786adc2ce5c8","name":"Kiyoshi Hasegawa","registered_at":"2026-06-14T12:31:48Z","symbol":"NIM0453815","token_address":"0x527dc51d8a9434ceda4a9601a110df865f58de10","type":"artist","uuid":"4c8258b4-3767-4ce6-bdc3-529ed9e6228b"}
album: ネオン輝く日々
  type: MusicAlbum
  date published: 1983-10-01
album: THIS TIME
  type: MusicAlbum
  date published: 1985-07-22
album: ACONTECE
  type: MusicAlbum
  date published: 1993-05-26
album: 透明なひとときを
  type: MusicAlbum
  date published: 1994-11-02
album: 一人ぼっちの詩
  type: MusicAlbum
  date published: 1994-11-02
album: あるばむ７
  type: MusicAlbum
  date published: 1994-11-02
album: MY FAVORITE SONGS
  type: MusicAlbum
  date published: 2002-10-23
  track: 灰色の瞳
    type: MusicRecording
    duration: PT3M51S
    duration ms: 231266
    explicit: false
    by artist: Kiyoshi Hasegawa
    in album: MY FAVORITE SONGS
      type: MusicAlbum
      date published: 2002-10-23
    genre: enka
    genre: kayokyoku
    isrc code: JPE407400310
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:25:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd9e99fade817b7f4f58d204277de81de489e02d58bc445131f0fe6b7b45f5f7f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958832
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958832
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE407400310
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:27:15Z
    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 0xd9e99fade817b7f4f58d204277de81de489e02d58bc445131f0fe6b7b45f5f7f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:15Z), 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/JPE407400310.
      date published: 2026-07-20T08:27:15Z
    audio: 灰色の瞳
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.362
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.585
      additional property: Energy
        type: PropertyValue
        value: 0.361
      additional property: Speechiness
        type: PropertyValue
        value: 0.131
      additional property: Acousticness
        type: PropertyValue
        value: 0.769
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.662
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.847
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.946
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Sunday Samba Session LIVE AT LOFT
  type: MusicAlbum
  date published: 2006-12-20
album: After Glow
  type: MusicAlbum
  date published: 2007-09-12
album: 人生という名の旅
  type: MusicAlbum
  date published: 2012-10-10
album: オン・ステージ
  type: MusicAlbum
  date published: 2012-10-14
album: 街角
  type: MusicAlbum
  date published: 2012-10-14
album: いにしえ坂
  type: MusicAlbum
  date published: 2012-10-14
album: イン・コンサート
  type: MusicAlbum
  date published: 2012-10-14
album: 卒業
  type: MusicAlbum
  date published: 2012-10-14
  track: 黒の舟唄
    type: MusicRecording
    duration: PT4M0S
    duration ms: 240453
    explicit: false
    by artist: Kiyoshi Hasegawa
    in album: 卒業
      type: MusicAlbum
      date published: 2012-10-14
    genre: enka
    genre: kayokyoku
    isrc code: JPE407100410
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T20:59:40+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5d50c21e82210a4f8684cd83fecbf7774421f4742624ba39ea3932442e2d2939
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPE407100410
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 黒の舟唄
album: 心震える時
album: THE OTHER もうあきてしまった
album: 恋愛専科
album: 風織るまちを過ぎて
album: アナザー・ドア
album: 遠く離れたおまえに

OTSTimestamp
type: PropertyValue
value: 2026-07-05T01:12:41Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d50c21e82210a4f8684cd83fecbf7774421f4742624ba39ea3932442e2d2939. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPE407100410.
date published: 2026-07-05T01:12:41Z

黒の舟唄
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 77.052
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: 0.555
additional property: Energy
  type: PropertyValue
  value: 0.409
additional property: Speechiness
  type: PropertyValue
  value: 0.049
additional property: Acousticness
  type: PropertyValue
  value: 0.265
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.097
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.374
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.932
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

心震える時
type: MusicAlbum
date published: 2015-04-15

THE OTHER もうあきてしまった
type: MusicAlbum
date published: 2015-09-02

恋愛専科
type: MusicAlbum
date published: 2016-01-27

風織るまちを過ぎて
type: MusicAlbum
date published: 2016-01-27

アナザー・ドア
type: MusicAlbum
date published: 2019-05-08

遠く離れたおまえに
type: MusicAlbum
date published: 2019-05-08