猫戦
type: MusicGroup
genre: japanese indie
genre: shibuya-kei
popularity: 31
followers: 11853
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x189d3bb66d5aae959533e4a0782fd771d61499c30503fd9453d60a10a53c8aaf
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/b3f62736-66a4-44d1-90ef-4e5e5a2c6932.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b3f62736-66a4-44d1-90ef-4e5e5a2c6932.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b3f62736-66a4-44d1-90ef-4e5e5a2c6932
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x189d3bb66d5aae959533e4a0782fd771d61499c30503fd9453d60a10a53c8aaf","name":"猫戦","registered_at":"2026-06-12T07:42:58Z","symbol":"NIM0231659","token_address":"0xc03973de713f7a76dc1692d9e8f9982b7ad517c8","type":"artist","uuid":"b3f62736-66a4-44d1-90ef-4e5e5a2c6932"}
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 0x189d3bb66d5aae959533e4a0782fd771d61499c30503fd9453d60a10a53c8aaf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3f62736-66a4-44d1-90ef-4e5e5a2c6932.json and https://artists.proofprofile.net/proofs/artist/b3f62736-66a4-44d1-90ef-4e5e5a2c6932.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x189d3bb66d5aae959533e4a0782fd771d61499c30503fd9453d60a10a53c8aaf","name":"猫戦","registered_at":"2026-06-12T07:42:58Z","symbol":"NIM0231659","token_address":"0xc03973de713f7a76dc1692d9e8f9982b7ad517c8","type":"artist","uuid":"b3f62736-66a4-44d1-90ef-4e5e5a2c6932"}
album: CAT IS LOVE
  type: MusicAlbum
  date published: 2025-02-12