Junichi Sakamoto
type: MusicGroup
genre: anime
popularity: 27
followers: 2475
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b81fe53c98fadf87a19e7fd05cc8fa069bfc0c83350e8928c0a76b989b7df19
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/e0251a7e-b3c5-42da-a48c-ea730be2fb54.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e0251a7e-b3c5-42da-a48c-ea730be2fb54.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e0251a7e-b3c5-42da-a48c-ea730be2fb54
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5b81fe53c98fadf87a19e7fd05cc8fa069bfc0c83350e8928c0a76b989b7df19","name":"Junichi Sakamoto","registered_at":"2026-06-12T11:52:04Z","symbol":"NIM0289493","token_address":"0x7dc1f0705432049e544c5b0f50107c7e95c9cb6e","type":"artist","uuid":"e0251a7e-b3c5-42da-a48c-ea730be2fb54"}
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 0x5b81fe53c98fadf87a19e7fd05cc8fa069bfc0c83350e8928c0a76b989b7df19. 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/e0251a7e-b3c5-42da-a48c-ea730be2fb54.json and https://artists.proofprofile.net/proofs/artist/e0251a7e-b3c5-42da-a48c-ea730be2fb54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x5b81fe53c98fadf87a19e7fd05cc8fa069bfc0c83350e8928c0a76b989b7df19","name":"Junichi Sakamoto","registered_at":"2026-06-12T11:52:04Z","symbol":"NIM0289493","token_address":"0x7dc1f0705432049e544c5b0f50107c7e95c9cb6e","type":"artist","uuid":"e0251a7e-b3c5-42da-a48c-ea730be2fb54"}
album: 熱烈！アニソン魂 THE BEST カバー楽曲集 TVアニメシリーズ『墓場鬼太郎』
  type: MusicAlbum
  date published: 2020-02-12