野乃はな（CV.引坂理絵）
type: MusicGroup
popularity: 3
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe158edf4b6be7d28b0792d0477fbcc0ddef9cb8a880bcd9941a7327e945e5cf5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50e200e6-d422-429d-bf3f-4ba8d4e4cb75.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50e200e6-d422-429d-bf3f-4ba8d4e4cb75.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/50e200e6-d422-429d-bf3f-4ba8d4e4cb75
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe158edf4b6be7d28b0792d0477fbcc0ddef9cb8a880bcd9941a7327e945e5cf5","name":"野乃はな（CV.引坂理絵）","registered_at":"2026-06-16T17:43:18Z","symbol":"NIM1127191","token_address":"0x1fb072df3cc6f2cfcd4e2571ea11c8e02c999186","type":"artist","uuid":"50e200e6-d422-429d-bf3f-4ba8d4e4cb75"}
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 0xe158edf4b6be7d28b0792d0477fbcc0ddef9cb8a880bcd9941a7327e945e5cf5. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50e200e6-d422-429d-bf3f-4ba8d4e4cb75.json and https://artists.proofprofile.net/proofs/artist/50e200e6-d422-429d-bf3f-4ba8d4e4cb75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xe158edf4b6be7d28b0792d0477fbcc0ddef9cb8a880bcd9941a7327e945e5cf5","name":"野乃はな（CV.引坂理絵）","registered_at":"2026-06-16T17:43:18Z","symbol":"NIM1127191","token_address":"0x1fb072df3cc6f2cfcd4e2571ea11c8e02c999186","type":"artist","uuid":"50e200e6-d422-429d-bf3f-4ba8d4e4cb75"}