忠勝(CV:岡本和浩)
type: MusicGroup
genre: visual kei
popularity: 3
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5a73f38b28a5d44bee083000ef7ef30bade366367fef8cbd59f53b42756986f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3afa3785-02c2-48ac-ab20-aa0a5d1b8f30.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3afa3785-02c2-48ac-ab20-aa0a5d1b8f30.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3afa3785-02c2-48ac-ab20-aa0a5d1b8f30
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe5a73f38b28a5d44bee083000ef7ef30bade366367fef8cbd59f53b42756986f","name":"忠勝(CV:岡本和浩)","registered_at":"2026-06-16T10:07:00Z","symbol":"NIM1018328","token_address":"0x349eb858c3564fce656a8c7abb3ab35b1e9fb8a4","type":"artist","uuid":"3afa3785-02c2-48ac-ab20-aa0a5d1b8f30"}
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 0xe5a73f38b28a5d44bee083000ef7ef30bade366367fef8cbd59f53b42756986f. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3afa3785-02c2-48ac-ab20-aa0a5d1b8f30.json and https://artists.proofprofile.net/proofs/artist/3afa3785-02c2-48ac-ab20-aa0a5d1b8f30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
  text: {"copyright_id":"0xe5a73f38b28a5d44bee083000ef7ef30bade366367fef8cbd59f53b42756986f","name":"忠勝(CV:岡本和浩)","registered_at":"2026-06-16T10:07:00Z","symbol":"NIM1018328","token_address":"0x349eb858c3564fce656a8c7abb3ab35b1e9fb8a4","type":"artist","uuid":"3afa3785-02c2-48ac-ab20-aa0a5d1b8f30"}