今井博一
type: MusicGroup
popularity: 6
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa5db06864927a6f6b224454d3f2c50b8c7b0d9ccc0216c42c9f6a71037b2cb64
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed78b685-27aa-4e9a-9948-5292326cbba8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ed78b685-27aa-4e9a-9948-5292326cbba8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ed78b685-27aa-4e9a-9948-5292326cbba8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa5db06864927a6f6b224454d3f2c50b8c7b0d9ccc0216c42c9f6a71037b2cb64","name":"今井博一","registered_at":"2026-06-21T11:43:39Z","symbol":"NIM1914377","token_address":"0x4360edb67727b8e38e9ca4ef98d66356787ca073","type":"artist","uuid":"ed78b685-27aa-4e9a-9948-5292326cbba8"}
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 0xa5db06864927a6f6b224454d3f2c50b8c7b0d9ccc0216c42c9f6a71037b2cb64. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed78b685-27aa-4e9a-9948-5292326cbba8.json and https://artists.proofprofile.net/proofs/artist/ed78b685-27aa-4e9a-9948-5292326cbba8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xa5db06864927a6f6b224454d3f2c50b8c7b0d9ccc0216c42c9f6a71037b2cb64","name":"今井博一","registered_at":"2026-06-21T11:43:39Z","symbol":"NIM1914377","token_address":"0x4360edb67727b8e38e9ca4ef98d66356787ca073","type":"artist","uuid":"ed78b685-27aa-4e9a-9948-5292326cbba8"}
album: あかね雲
  type: MusicAlbum
  date published: 2024-12-08