Kousuke Matsuzaki
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 3
followers: 349
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x58aea86999e909df08c7adb57fbe01084d5c9c98c1f81962bb75ef26158d6599
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc4e51bb-067d-41f4-af18-36e6ba92730d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bc4e51bb-067d-41f4-af18-36e6ba92730d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bc4e51bb-067d-41f4-af18-36e6ba92730d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x58aea86999e909df08c7adb57fbe01084d5c9c98c1f81962bb75ef26158d6599","name":"Kousuke Matsuzaki","registered_at":"2026-06-20T17:39:38Z","symbol":"NIM1668608","token_address":"0xa4efdbb69009a35e065067336944857acc1f060e","type":"artist","uuid":"bc4e51bb-067d-41f4-af18-36e6ba92730d"}
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 0x58aea86999e909df08c7adb57fbe01084d5c9c98c1f81962bb75ef26158d6599. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc4e51bb-067d-41f4-af18-36e6ba92730d.json and https://artists.proofprofile.net/proofs/artist/bc4e51bb-067d-41f4-af18-36e6ba92730d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x58aea86999e909df08c7adb57fbe01084d5c9c98c1f81962bb75ef26158d6599","name":"Kousuke Matsuzaki","registered_at":"2026-06-20T17:39:38Z","symbol":"NIM1668608","token_address":"0xa4efdbb69009a35e065067336944857acc1f060e","type":"artist","uuid":"bc4e51bb-067d-41f4-af18-36e6ba92730d"}
album: Kimisumu machi
  type: MusicAlbum
  date published: 2008-02-05
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  type: MusicAlbum
  date published: 2008-02-05
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  type: MusicAlbum
  date published: 2009-12-09
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  type: MusicAlbum
  date published: 2009-12-09
album: 冬の空港
  type: MusicAlbum
  date published: 2012-06-06
album: Fuyuno kuukou
  type: MusicAlbum
  date published: 2012-06-06
album: 哀しみのアドレス／涙のピリオド／思い出にする前に
  type: MusicAlbum
  date published: 2021-03-03