工藤重典（フルート&指揮）
type: MusicGroup
popularity: 2
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf55acbc96596ff6ad68dee2dbcd33327435d76b018f6c950dfa96b2b05b2692
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8202937e-f7a2-4ea0-80b6-48c3c6a07223.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8202937e-f7a2-4ea0-80b6-48c3c6a07223.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8202937e-f7a2-4ea0-80b6-48c3c6a07223
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdf55acbc96596ff6ad68dee2dbcd33327435d76b018f6c950dfa96b2b05b2692","name":"工藤重典（フルート&指揮）","registered_at":"2026-06-17T10:58:45Z","symbol":"NIM1374183","token_address":"0x660ea25f69f8f94a2877dea5af16e80dc36b48b3","type":"artist","uuid":"8202937e-f7a2-4ea0-80b6-48c3c6a07223"}
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 0xdf55acbc96596ff6ad68dee2dbcd33327435d76b018f6c950dfa96b2b05b2692. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8202937e-f7a2-4ea0-80b6-48c3c6a07223.json and https://artists.proofprofile.net/proofs/artist/8202937e-f7a2-4ea0-80b6-48c3c6a07223.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xdf55acbc96596ff6ad68dee2dbcd33327435d76b018f6c950dfa96b2b05b2692","name":"工藤重典（フルート&指揮）","registered_at":"2026-06-17T10:58:45Z","symbol":"NIM1374183","token_address":"0x660ea25f69f8f94a2877dea5af16e80dc36b48b3","type":"artist","uuid":"8202937e-f7a2-4ea0-80b6-48c3c6a07223"}
album: 牧神の午後への前奏曲 フルート・アンサンブルの愉しみ
  type: MusicAlbum
  date published: 2019-03-25
album: Prelude to ”L'après-midi d'un faune” (Afternoon of a Faun) Arr. for Flute Ensemble
  type: MusicAlbum
  date published: 2019-03-25