Yuto Hirabayashi
type: MusicGroup
popularity: 3
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2e45492a216fe5dd0b876ee8f87db577ba3987a584839a28954b2ce764a21e83
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954139
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954139
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fdd0baf-5b92-4fc3-920a-8e774a059052.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7fdd0baf-5b92-4fc3-920a-8e774a059052.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7fdd0baf-5b92-4fc3-920a-8e774a059052
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T21:12:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2e45492a216fe5dd0b876ee8f87db577ba3987a584839a28954b2ce764a21e83","name":"Yuto Hirabayashi","registered_at":"2026-06-17T10:09:03Z","symbol":"NIM1362352","token_address":"0xd8f41c69ca1a781f74873f905d03891da59c057f","type":"artist","uuid":"7fdd0baf-5b92-4fc3-920a-8e774a059052"}
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 0x2e45492a216fe5dd0b876ee8f87db577ba3987a584839a28954b2ce764a21e83. Chain 2 (Bitcoin): anchored in block 954139 (2026-06-17T21:12:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fdd0baf-5b92-4fc3-920a-8e774a059052.json and https://artists.proofprofile.net/proofs/artist/7fdd0baf-5b92-4fc3-920a-8e774a059052.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T21:12:18Z
  text: {"copyright_id":"0x2e45492a216fe5dd0b876ee8f87db577ba3987a584839a28954b2ce764a21e83","name":"Yuto Hirabayashi","registered_at":"2026-06-17T10:09:03Z","symbol":"NIM1362352","token_address":"0xd8f41c69ca1a781f74873f905d03891da59c057f","type":"artist","uuid":"7fdd0baf-5b92-4fc3-920a-8e774a059052"}