上条春菜 (CV: 長島光那)
type: MusicGroup
popularity: 12
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb0b166d0273306709eefd7f04529572e79f9f4bc177831c8e2e4d32ea69d2e68
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/c434b2f3-943b-4bb9-8fcc-057cc083e795.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c434b2f3-943b-4bb9-8fcc-057cc083e795.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c434b2f3-943b-4bb9-8fcc-057cc083e795
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:50:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb0b166d0273306709eefd7f04529572e79f9f4bc177831c8e2e4d32ea69d2e68","name":"上条春菜 (CV: 長島光那)","registered_at":"2026-06-15T01:09:59Z","symbol":"NIM0634710","token_address":"0xa4d70486a818622d3d0eb5c2d990585b98b5aba1","type":"artist","uuid":"c434b2f3-943b-4bb9-8fcc-057cc083e795"}
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 0xb0b166d0273306709eefd7f04529572e79f9f4bc177831c8e2e4d32ea69d2e68. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c434b2f3-943b-4bb9-8fcc-057cc083e795.json and https://artists.proofprofile.net/proofs/artist/c434b2f3-943b-4bb9-8fcc-057cc083e795.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T10:33:29Z
  text: {"copyright_id":"0xb0b166d0273306709eefd7f04529572e79f9f4bc177831c8e2e4d32ea69d2e68","name":"上条春菜 (CV: 長島光那)","registered_at":"2026-06-15T01:09:59Z","symbol":"NIM0634710","token_address":"0xa4d70486a818622d3d0eb5c2d990585b98b5aba1","type":"artist","uuid":"c434b2f3-943b-4bb9-8fcc-057cc083e795"}