國府田マリ子
type: MusicGroup
genre: shibuya-kei
popularity: 7
followers: 1534
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6db6f5ab13c314ca241187f40c28b0317fee1d49548a70014f0d0e98a81df3d9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9909508a-562b-41be-841e-d2f7694453b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9909508a-562b-41be-841e-d2f7694453b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9909508a-562b-41be-841e-d2f7694453b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6db6f5ab13c314ca241187f40c28b0317fee1d49548a70014f0d0e98a81df3d9","name":"國府田マリ子","registered_at":"2026-06-17T19:19:02Z","symbol":"NIM1493503","token_address":"0xaef5786513dfd2bfa8dea4d73605d205be2e4bc9","type":"artist","uuid":"9909508a-562b-41be-841e-d2f7694453b4"}
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 0x6db6f5ab13c314ca241187f40c28b0317fee1d49548a70014f0d0e98a81df3d9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9909508a-562b-41be-841e-d2f7694453b4.json and https://artists.proofprofile.net/proofs/artist/9909508a-562b-41be-841e-d2f7694453b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x6db6f5ab13c314ca241187f40c28b0317fee1d49548a70014f0d0e98a81df3d9","name":"國府田マリ子","registered_at":"2026-06-17T19:19:02Z","symbol":"NIM1493503","token_address":"0xaef5786513dfd2bfa8dea4d73605d205be2e4bc9","type":"artist","uuid":"9909508a-562b-41be-841e-d2f7694453b4"}
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