平松剛一
type: MusicGroup
genre: choral
popularity: 31
followers: 427
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7def3e74b01703884f667ea1a213962cb4371f6bdc83faca1fb4d5e6d73b3c1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8224c3bb-f06d-4b90-b129-d1fb7eed784d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8224c3bb-f06d-4b90-b129-d1fb7eed784d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8224c3bb-f06d-4b90-b129-d1fb7eed784d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf7def3e74b01703884f667ea1a213962cb4371f6bdc83faca1fb4d5e6d73b3c1","name":"平松剛一","registered_at":"2026-06-12T03:12:14Z","symbol":"NIM0169312","token_address":"0x536740ca78f0d18f9937b9580e8120acb1a665ed","type":"artist","uuid":"8224c3bb-f06d-4b90-b129-d1fb7eed784d"}
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 0xf7def3e74b01703884f667ea1a213962cb4371f6bdc83faca1fb4d5e6d73b3c1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8224c3bb-f06d-4b90-b129-d1fb7eed784d.json and https://artists.proofprofile.net/proofs/artist/8224c3bb-f06d-4b90-b129-d1fb7eed784d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xf7def3e74b01703884f667ea1a213962cb4371f6bdc83faca1fb4d5e6d73b3c1","name":"平松剛一","registered_at":"2026-06-12T03:12:14Z","symbol":"NIM0169312","token_address":"0x536740ca78f0d18f9937b9580e8120acb1a665ed","type":"artist","uuid":"8224c3bb-f06d-4b90-b129-d1fb7eed784d"}