12人のヴァイオリニスト
type: MusicGroup
popularity: 8
followers: 37
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66ab88e367fbd5bb4b0f75ad599ff1cf71d75259107dd6d6455d4d4f3e6e6fe4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66ab88e367fbd5bb4b0f75ad599ff1cf71d75259107dd6d6455d4d4f3e6e6fe4","name":"12人のヴァイオリニスト","registered_at":"2026-06-20T04:44:46Z","symbol":"NIM1516088","token_address":"0x58647cc213b3e4bb96e6a58c6e49acd21bddca74","type":"artist","uuid":"9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ab88e367fbd5bb4b0f75ad599ff1cf71d75259107dd6d6455d4d4f3e6e6fe4. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f.json and https://artists.proofprofile.net/proofs/artist/9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x66ab88e367fbd5bb4b0f75ad599ff1cf71d75259107dd6d6455d4d4f3e6e6fe4","name":"12人のヴァイオリニスト","registered_at":"2026-06-20T04:44:46Z","symbol":"NIM1516088","token_address":"0x58647cc213b3e4bb96e6a58c6e49acd21bddca74","type":"artist","uuid":"9e42c4da-6838-4e5a-8c2e-5cc16bbf1b0f"}