上田鈴帆 (CV: 春野ななみ)
type: MusicGroup
popularity: 5
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5133f4ae23e5f3996881ea2747a251248ffb6d9079e351ac5a99c9779f4e4783
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44ffe97-6308-4ffa-b1d0-8546d25776db.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44ffe97-6308-4ffa-b1d0-8546d25776db.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f44ffe97-6308-4ffa-b1d0-8546d25776db
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5133f4ae23e5f3996881ea2747a251248ffb6d9079e351ac5a99c9779f4e4783","name":"上田鈴帆 (CV: 春野ななみ)","registered_at":"2026-06-21T14:35:00Z","symbol":"NIM1948389","token_address":"0xb5f928001c65a06b72634f3b7cceb9684ae9776f","type":"artist","uuid":"f44ffe97-6308-4ffa-b1d0-8546d25776db"}
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 0x5133f4ae23e5f3996881ea2747a251248ffb6d9079e351ac5a99c9779f4e4783. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f44ffe97-6308-4ffa-b1d0-8546d25776db.json and https://artists.proofprofile.net/proofs/artist/f44ffe97-6308-4ffa-b1d0-8546d25776db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x5133f4ae23e5f3996881ea2747a251248ffb6d9079e351ac5a99c9779f4e4783","name":"上田鈴帆 (CV: 春野ななみ)","registered_at":"2026-06-21T14:35:00Z","symbol":"NIM1948389","token_address":"0xb5f928001c65a06b72634f3b7cceb9684ae9776f","type":"artist","uuid":"f44ffe97-6308-4ffa-b1d0-8546d25776db"}