桃田佳世子
type: MusicGroup
popularity: 10
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71d16a475df0e0b6375d17e2dc66a6a6af783d7856e9900ac5c5b9077dc0c4f0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8503ce0e-9d95-4576-a294-ae8d2f5c0ee4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8503ce0e-9d95-4576-a294-ae8d2f5c0ee4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8503ce0e-9d95-4576-a294-ae8d2f5c0ee4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71d16a475df0e0b6375d17e2dc66a6a6af783d7856e9900ac5c5b9077dc0c4f0","name":"桃田佳世子","registered_at":"2026-06-17T11:58:58Z","symbol":"NIM1388554","token_address":"0x682262ab0a5f84493a3900f4149d55c7476754fc","type":"artist","uuid":"8503ce0e-9d95-4576-a294-ae8d2f5c0ee4"}
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 0x71d16a475df0e0b6375d17e2dc66a6a6af783d7856e9900ac5c5b9077dc0c4f0. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8503ce0e-9d95-4576-a294-ae8d2f5c0ee4.json and https://artists.proofprofile.net/proofs/artist/8503ce0e-9d95-4576-a294-ae8d2f5c0ee4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x71d16a475df0e0b6375d17e2dc66a6a6af783d7856e9900ac5c5b9077dc0c4f0","name":"桃田佳世子","registered_at":"2026-06-17T11:58:58Z","symbol":"NIM1388554","token_address":"0x682262ab0a5f84493a3900f4149d55c7476754fc","type":"artist","uuid":"8503ce0e-9d95-4576-a294-ae8d2f5c0ee4"}
album: メタルファイター♡MIKU 主題歌「風になるまで」
  type: MusicAlbum
  date published: 1994-07-21