Tempei Nakamura
type: MusicGroup
popularity: 8
followers: 1063
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc30de55dcbb40904307c9214bbc2f4a93059d9e5da218ca702caa579c86425a2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fda1a351-4aaa-41f2-bdf9-663ad3833418.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fda1a351-4aaa-41f2-bdf9-663ad3833418.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fda1a351-4aaa-41f2-bdf9-663ad3833418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc30de55dcbb40904307c9214bbc2f4a93059d9e5da218ca702caa579c86425a2","name":"Tempei Nakamura","registered_at":"2026-06-21T18:18:03Z","symbol":"NIM1999606","token_address":"0x6daa78fc60dc5e0b0c9dbf5d28821cae49b2d81b","type":"artist","uuid":"fda1a351-4aaa-41f2-bdf9-663ad3833418"}
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 0xc30de55dcbb40904307c9214bbc2f4a93059d9e5da218ca702caa579c86425a2. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fda1a351-4aaa-41f2-bdf9-663ad3833418.json and https://artists.proofprofile.net/proofs/artist/fda1a351-4aaa-41f2-bdf9-663ad3833418.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0xc30de55dcbb40904307c9214bbc2f4a93059d9e5da218ca702caa579c86425a2","name":"Tempei Nakamura","registered_at":"2026-06-21T18:18:03Z","symbol":"NIM1999606","token_address":"0x6daa78fc60dc5e0b0c9dbf5d28821cae49b2d81b","type":"artist","uuid":"fda1a351-4aaa-41f2-bdf9-663ad3833418"}
album: Phoenix
  type: MusicAlbum
  date published: 2012-03-21
album: Vortex
  type: MusicAlbum
  date published: 2016-03-19
album: Visions
  type: MusicAlbum
  date published: 2018-10-19
album: Rising Soul
  type: MusicAlbum
  date published: 2021-10-31