白ウサギ／逆先夏目（CAST:木津つばさ）
type: MusicGroup
popularity: 4
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc740e9b9c121de7136318ed905aa591f67d9944e862d4f6b142584166de7610
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4306140-6d84-443d-9392-04091d50aee8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f4306140-6d84-443d-9392-04091d50aee8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f4306140-6d84-443d-9392-04091d50aee8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc740e9b9c121de7136318ed905aa591f67d9944e862d4f6b142584166de7610","name":"白ウサギ／逆先夏目（CAST:木津つばさ）","registered_at":"2026-06-21T14:24:39Z","symbol":"NIM1946763","token_address":"0xd9f4f1a4e8f01984741380b223992437530f4941","type":"artist","uuid":"f4306140-6d84-443d-9392-04091d50aee8"}
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 0xbc740e9b9c121de7136318ed905aa591f67d9944e862d4f6b142584166de7610. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4306140-6d84-443d-9392-04091d50aee8.json and https://artists.proofprofile.net/proofs/artist/f4306140-6d84-443d-9392-04091d50aee8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0xbc740e9b9c121de7136318ed905aa591f67d9944e862d4f6b142584166de7610","name":"白ウサギ／逆先夏目（CAST:木津つばさ）","registered_at":"2026-06-21T14:24:39Z","symbol":"NIM1946763","token_address":"0xd9f4f1a4e8f01984741380b223992437530f4941","type":"artist","uuid":"f4306140-6d84-443d-9392-04091d50aee8"}