梓川かえで(CV:久保ユリカ)
type: MusicGroup
genre: anime
popularity: 52
followers: 2800
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdbb6b5da032cc276f2e2944b4948b0c2194750a96516bde2d80a98954d068070
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdbb6b5da032cc276f2e2944b4948b0c2194750a96516bde2d80a98954d068070","name":"梓川かえで(CV:久保ユリカ)","registered_at":"2026-06-12T05:31:48Z","symbol":"NIM0201447","token_address":"0x027c7f9e9bb79525da046ed74489ed4c613f2fc8","type":"artist","uuid":"9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c"}
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 0xdbb6b5da032cc276f2e2944b4948b0c2194750a96516bde2d80a98954d068070. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c.json and https://artists.proofprofile.net/proofs/artist/9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xdbb6b5da032cc276f2e2944b4948b0c2194750a96516bde2d80a98954d068070","name":"梓川かえで(CV:久保ユリカ)","registered_at":"2026-06-12T05:31:48Z","symbol":"NIM0201447","token_address":"0x027c7f9e9bb79525da046ed74489ed4c613f2fc8","type":"artist","uuid":"9b6e1b06-8a5b-44b2-a512-3c0beb9a7a4c"}
album: 不可思議のカルテ 梓川かえで Ver.
  type: MusicAlbum
  date published: 2019