今井俊輔
type: MusicGroup
popularity: 3
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xecda66d1a79bb443f1328bd621a7dfd8007ade75faf007b26109f14e8d15921e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc023c3-c82f-4484-af7e-837f7cebcf28.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9fc023c3-c82f-4484-af7e-837f7cebcf28.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9fc023c3-c82f-4484-af7e-837f7cebcf28
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xecda66d1a79bb443f1328bd621a7dfd8007ade75faf007b26109f14e8d15921e","name":"今井俊輔","registered_at":"2026-06-20T05:36:49Z","symbol":"NIM1527258","token_address":"0xd949b90b42748dfd7615d89defd68e1eda7bb522","type":"artist","uuid":"9fc023c3-c82f-4484-af7e-837f7cebcf28"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecda66d1a79bb443f1328bd621a7dfd8007ade75faf007b26109f14e8d15921e. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fc023c3-c82f-4484-af7e-837f7cebcf28.json and https://artists.proofprofile.net/proofs/artist/9fc023c3-c82f-4484-af7e-837f7cebcf28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0xecda66d1a79bb443f1328bd621a7dfd8007ade75faf007b26109f14e8d15921e","name":"今井俊輔","registered_at":"2026-06-20T05:36:49Z","symbol":"NIM1527258","token_address":"0xd949b90b42748dfd7615d89defd68e1eda7bb522","type":"artist","uuid":"9fc023c3-c82f-4484-af7e-837f7cebcf28"}
album: I am I -日本-
  type: MusicAlbum
  date published: 2019-12-04
album: I am I -イタリア-
  type: MusicAlbum
  date published: 2019-12-04
album: I am I -2020- Volare!
  type: MusicAlbum
  date published: 2020-10-28