葉山久瑠実
type: MusicGroup
popularity: 4
followers: 592
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4990607ff9a0e23bb7c39d230c04aaf2f90db296758c74b2611e2a7343c93f08
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/406b711c-4e8e-453c-b6c5-abda017c7201.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/406b711c-4e8e-453c-b6c5-abda017c7201.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/406b711c-4e8e-453c-b6c5-abda017c7201
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4990607ff9a0e23bb7c39d230c04aaf2f90db296758c74b2611e2a7343c93f08","name":"葉山久瑠実","registered_at":"2026-06-16T11:59:42Z","symbol":"NIM1045210","token_address":"0x176bb1ba02662cdf7da5818114b8ece805cdb15f","type":"artist","uuid":"406b711c-4e8e-453c-b6c5-abda017c7201"}
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 0x4990607ff9a0e23bb7c39d230c04aaf2f90db296758c74b2611e2a7343c93f08. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/406b711c-4e8e-453c-b6c5-abda017c7201.json and https://artists.proofprofile.net/proofs/artist/406b711c-4e8e-453c-b6c5-abda017c7201.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x4990607ff9a0e23bb7c39d230c04aaf2f90db296758c74b2611e2a7343c93f08","name":"葉山久瑠実","registered_at":"2026-06-16T11:59:42Z","symbol":"NIM1045210","token_address":"0x176bb1ba02662cdf7da5818114b8ece805cdb15f","type":"artist","uuid":"406b711c-4e8e-453c-b6c5-abda017c7201"}
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