Ryoichi Kurokawa
type: MusicGroup
genre: experimental
genre: glitch
genre: idm
genre: japanese indie
popularity: 2
followers: 2391
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5ff13d8ad053aa2f1f62dbe23b6507928d7cd980d4aab2f0cafa52a4d977c38
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953955
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953955
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26c1ec31-31eb-450c-ae81-b1ba7cb4a80d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/26c1ec31-31eb-450c-ae81-b1ba7cb4a80d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/26c1ec31-31eb-450c-ae81-b1ba7cb4a80d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:29:53Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5ff13d8ad053aa2f1f62dbe23b6507928d7cd980d4aab2f0cafa52a4d977c38","name":"Ryoichi Kurokawa","registered_at":"2026-06-16T02:59:23Z","symbol":"NIM0916219","token_address":"0x2c6a5e50868dda1cad4538628310d6130a97b845","type":"artist","uuid":"26c1ec31-31eb-450c-ae81-b1ba7cb4a80d"}
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 0xc5ff13d8ad053aa2f1f62dbe23b6507928d7cd980d4aab2f0cafa52a4d977c38. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26c1ec31-31eb-450c-ae81-b1ba7cb4a80d.json and https://artists.proofprofile.net/proofs/artist/26c1ec31-31eb-450c-ae81-b1ba7cb4a80d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xc5ff13d8ad053aa2f1f62dbe23b6507928d7cd980d4aab2f0cafa52a4d977c38","name":"Ryoichi Kurokawa","registered_at":"2026-06-16T02:59:23Z","symbol":"NIM0916219","token_address":"0x2c6a5e50868dda1cad4538628310d6130a97b845","type":"artist","uuid":"26c1ec31-31eb-450c-ae81-b1ba7cb4a80d"}
album: copynature
  type: MusicAlbum
  date published: 2003
album: copynature
  type: MusicAlbum
  date published: 2003
album: copynature
  type: MusicAlbum
  date published: 2003
album: Copynature
  type: MusicAlbum
  date published: 2003-05-30