Youko Hikasa
type: MusicGroup
popularity: 3
followers: 433
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf4ebcb8e2605a5ab8e15759230c2245074eb1d3f531217888b37c5029289b62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9997e984-5fb2-4785-a7d6-0db62b23132c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9997e984-5fb2-4785-a7d6-0db62b23132c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9997e984-5fb2-4785-a7d6-0db62b23132c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf4ebcb8e2605a5ab8e15759230c2245074eb1d3f531217888b37c5029289b62","name":"Youko Hikasa","registered_at":"2026-06-17T19:30:53Z","symbol":"NIM1496324","token_address":"0x9ecb4d41dff4819f656b207f669f728a4399c992","type":"artist","uuid":"9997e984-5fb2-4785-a7d6-0db62b23132c"}
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 0xcf4ebcb8e2605a5ab8e15759230c2245074eb1d3f531217888b37c5029289b62. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9997e984-5fb2-4785-a7d6-0db62b23132c.json and https://artists.proofprofile.net/proofs/artist/9997e984-5fb2-4785-a7d6-0db62b23132c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xcf4ebcb8e2605a5ab8e15759230c2245074eb1d3f531217888b37c5029289b62","name":"Youko Hikasa","registered_at":"2026-06-17T19:30:53Z","symbol":"NIM1496324","token_address":"0x9ecb4d41dff4819f656b207f669f728a4399c992","type":"artist","uuid":"9997e984-5fb2-4785-a7d6-0db62b23132c"}
album: Owaranai Uta (Standard Edition)
  type: MusicAlbum
  date published: 2013
album: Glamorous Songs (Standard Edition)
  type: MusicAlbum
  date published: 2013
album: Seek Diamonds (Standard Edition)
  type: MusicAlbum
  date published: 2013
album: EX: Futurize (Standard Edition)
  type: MusicAlbum
  date published: 2013