Kaoru Hashimoto
type: MusicGroup
popularity: 4
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb247006bdc3d042c441fc0f3a4635c6a6981d92af6d167d5ea7af4ba8a254b29
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb9b5800-9613-4a45-ac46-d67ae8b64a9f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cb9b5800-9613-4a45-ac46-d67ae8b64a9f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cb9b5800-9613-4a45-ac46-d67ae8b64a9f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb247006bdc3d042c441fc0f3a4635c6a6981d92af6d167d5ea7af4ba8a254b29","name":"Kaoru Hashimoto","registered_at":"2026-06-20T23:02:22Z","symbol":"NIM1742061","token_address":"0xed98df435781579d2a81c73cc20f87798f0e720e","type":"artist","uuid":"cb9b5800-9613-4a45-ac46-d67ae8b64a9f"}
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 0xb247006bdc3d042c441fc0f3a4635c6a6981d92af6d167d5ea7af4ba8a254b29. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb9b5800-9613-4a45-ac46-d67ae8b64a9f.json and https://artists.proofprofile.net/proofs/artist/cb9b5800-9613-4a45-ac46-d67ae8b64a9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0xb247006bdc3d042c441fc0f3a4635c6a6981d92af6d167d5ea7af4ba8a254b29","name":"Kaoru Hashimoto","registered_at":"2026-06-20T23:02:22Z","symbol":"NIM1742061","token_address":"0xed98df435781579d2a81c73cc20f87798f0e720e","type":"artist","uuid":"cb9b5800-9613-4a45-ac46-d67ae8b64a9f"}