Kazunobu Nishiyama
type: MusicGroup
popularity: 22
followers: 197
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa88a5c088428bdc1314a3022d9f250423c00e7f1be5f4078e03bfe8f81cefbc9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78240df2-23dc-429e-afa9-70eaa92c049f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/78240df2-23dc-429e-afa9-70eaa92c049f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/78240df2-23dc-429e-afa9-70eaa92c049f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa88a5c088428bdc1314a3022d9f250423c00e7f1be5f4078e03bfe8f81cefbc9","name":"Kazunobu Nishiyama","registered_at":"2026-06-12T01:23:52Z","symbol":"NIM0155727","token_address":"0xee4b6d64795d76b5e78c313476635d3f22eb388e","type":"artist","uuid":"78240df2-23dc-429e-afa9-70eaa92c049f"}
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 0xa88a5c088428bdc1314a3022d9f250423c00e7f1be5f4078e03bfe8f81cefbc9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78240df2-23dc-429e-afa9-70eaa92c049f.json and https://artists.proofprofile.net/proofs/artist/78240df2-23dc-429e-afa9-70eaa92c049f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xa88a5c088428bdc1314a3022d9f250423c00e7f1be5f4078e03bfe8f81cefbc9","name":"Kazunobu Nishiyama","registered_at":"2026-06-12T01:23:52Z","symbol":"NIM0155727","token_address":"0xee4b6d64795d76b5e78c313476635d3f22eb388e","type":"artist","uuid":"78240df2-23dc-429e-afa9-70eaa92c049f"}
album: yugen
  type: MusicAlbum
  date published: 2020-04-03
album: irusu
  type: MusicAlbum
  date published: 2020-10-09
album: seijaku
  type: MusicAlbum
  date published: 2021-06-15
album: Unkai
  type: MusicAlbum
  date published: 2022-06-03