吉沢典夫
type: MusicGroup
popularity: 36
followers: 54
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7222612f4c6f1687f30bc5746141ecbb3aecb7303e6c072a45e33899aca8b989
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953423
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953423
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa9b1544-8974-4ff5-b986-4669a5092dcc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fa9b1544-8974-4ff5-b986-4669a5092dcc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fa9b1544-8974-4ff5-b986-4669a5092dcc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T21:20:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7222612f4c6f1687f30bc5746141ecbb3aecb7303e6c072a45e33899aca8b989","name":"吉沢典夫","registered_at":"2026-06-12T14:16:53Z","symbol":"NIM0322876","token_address":"0x11be8bbc9fdb4b77aeb4df020dc634ac73946bdd","type":"artist","uuid":"fa9b1544-8974-4ff5-b986-4669a5092dcc"}
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 0x7222612f4c6f1687f30bc5746141ecbb3aecb7303e6c072a45e33899aca8b989. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9b1544-8974-4ff5-b986-4669a5092dcc.json and https://artists.proofprofile.net/proofs/artist/fa9b1544-8974-4ff5-b986-4669a5092dcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x7222612f4c6f1687f30bc5746141ecbb3aecb7303e6c072a45e33899aca8b989","name":"吉沢典夫","registered_at":"2026-06-12T14:16:53Z","symbol":"NIM0322876","token_address":"0x11be8bbc9fdb4b77aeb4df020dc634ac73946bdd","type":"artist","uuid":"fa9b1544-8974-4ff5-b986-4669a5092dcc"}