ユウキシロ
type: MusicGroup
genre: japanese indie
popularity: 4
followers: 220
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc24c811489167db889511e2ac89ce339e35a65efb5043804df83e08e464e919
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a95388eb-44e4-4df6-a983-ea495fba52c1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a95388eb-44e4-4df6-a983-ea495fba52c1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a95388eb-44e4-4df6-a983-ea495fba52c1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc24c811489167db889511e2ac89ce339e35a65efb5043804df83e08e464e919","name":"ユウキシロ","registered_at":"2026-06-20T09:11:10Z","symbol":"NIM1575095","token_address":"0xbd913ac3a4664337c2535fb0ab2e7075b4d50d7b","type":"artist","uuid":"a95388eb-44e4-4df6-a983-ea495fba52c1"}
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 0xfc24c811489167db889511e2ac89ce339e35a65efb5043804df83e08e464e919. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a95388eb-44e4-4df6-a983-ea495fba52c1.json and https://artists.proofprofile.net/proofs/artist/a95388eb-44e4-4df6-a983-ea495fba52c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xfc24c811489167db889511e2ac89ce339e35a65efb5043804df83e08e464e919","name":"ユウキシロ","registered_at":"2026-06-20T09:11:10Z","symbol":"NIM1575095","token_address":"0xbd913ac3a4664337c2535fb0ab2e7075b4d50d7b","type":"artist","uuid":"a95388eb-44e4-4df6-a983-ea495fba52c1"}
album: 木星の上で
  type: MusicAlbum
  date published: 2020-03-14
album: 1999
  type: MusicAlbum
  date published: 2020-07-06
album: Somato
  type: MusicAlbum
  date published: 2020-09-01
album: Fragile Memories (feat. Rom)
  type: MusicAlbum
  date published: 2020-12-01
album: Days
  type: MusicAlbum
  date published: 2021-02-14
album: FAMI no UTA
  type: MusicAlbum
  date published: 2021-08-18