岸洋子
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 12
followers: 1120
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf699cf1cee3b43c1d7023c7f383c779fecfccb8a33761241f91e6df2340dd362
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953770
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953770
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9ea91c9-27ed-4850-9b4c-482be859501e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a9ea91c9-27ed-4850-9b4c-482be859501e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a9ea91c9-27ed-4850-9b4c-482be859501e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf699cf1cee3b43c1d7023c7f383c779fecfccb8a33761241f91e6df2340dd362","name":"岸洋子","registered_at":"2026-06-14T22:26:15Z","symbol":"NIM0595604","token_address":"0x76ca7207ec6309ef0919fa454dbb0acefa552564","type":"artist","uuid":"a9ea91c9-27ed-4850-9b4c-482be859501e"}
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 0xf699cf1cee3b43c1d7023c7f383c779fecfccb8a33761241f91e6df2340dd362. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9ea91c9-27ed-4850-9b4c-482be859501e.json and https://artists.proofprofile.net/proofs/artist/a9ea91c9-27ed-4850-9b4c-482be859501e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0xf699cf1cee3b43c1d7023c7f383c779fecfccb8a33761241f91e6df2340dd362","name":"岸洋子","registered_at":"2026-06-14T22:26:15Z","symbol":"NIM0595604","token_address":"0x76ca7207ec6309ef0919fa454dbb0acefa552564","type":"artist","uuid":"a9ea91c9-27ed-4850-9b4c-482be859501e"}
album: ともだちのうた
  type: MusicAlbum
  date published: 1972-05-10