横山智佐(真宮寺さくら)
type: MusicGroup
genre: anime
popularity: 13
followers: 442
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16f9912f2574fc5598101fb2672eaa8bbacaf50926d4ebe3dec1bed02f0be138
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x16f9912f2574fc5598101fb2672eaa8bbacaf50926d4ebe3dec1bed02f0be138","name":"横山智佐(真宮寺さくら)","registered_at":"2026-06-14T18:34:52Z","symbol":"NIM0540416","token_address":"0xc6443ee8daa74fa16cdf8cf524b84eb71b1f3f1e","type":"artist","uuid":"86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf"}
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 0x16f9912f2574fc5598101fb2672eaa8bbacaf50926d4ebe3dec1bed02f0be138. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf.json and https://artists.proofprofile.net/proofs/artist/86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x16f9912f2574fc5598101fb2672eaa8bbacaf50926d4ebe3dec1bed02f0be138","name":"横山智佐(真宮寺さくら)","registered_at":"2026-06-14T18:34:52Z","symbol":"NIM0540416","token_address":"0xc6443ee8daa74fa16cdf8cf524b84eb71b1f3f1e","type":"artist","uuid":"86eb05a9-19ad-4543-b8d2-7ab0fcf86eaf"}