園田高弘
type: MusicGroup
genre: classical piano
popularity: 12
followers: 27
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8bb69cf66d8f7d350b6b9157ab07669afca06868f706e17d0970b7decff578d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953678
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953678
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63c9e989-f2b5-4c1b-9e06-4753035995e7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63c9e989-f2b5-4c1b-9e06-4753035995e7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63c9e989-f2b5-4c1b-9e06-4753035995e7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:23:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8bb69cf66d8f7d350b6b9157ab07669afca06868f706e17d0970b7decff578d1","name":"園田高弘","registered_at":"2026-06-14T14:53:53Z","symbol":"NIM0487732","token_address":"0x748940805a886e2766f8fa374abc21e215547147","type":"artist","uuid":"63c9e989-f2b5-4c1b-9e06-4753035995e7"}
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 0x8bb69cf66d8f7d350b6b9157ab07669afca06868f706e17d0970b7decff578d1. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63c9e989-f2b5-4c1b-9e06-4753035995e7.json and https://artists.proofprofile.net/proofs/artist/63c9e989-f2b5-4c1b-9e06-4753035995e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:23:11Z
  text: {"copyright_id":"0x8bb69cf66d8f7d350b6b9157ab07669afca06868f706e17d0970b7decff578d1","name":"園田高弘","registered_at":"2026-06-14T14:53:53Z","symbol":"NIM0487732","token_address":"0x748940805a886e2766f8fa374abc21e215547147","type":"artist","uuid":"63c9e989-f2b5-4c1b-9e06-4753035995e7"}
album: シューベルト：さすらい人幻想曲 / ショパン：幻想ポロネーズ / スクリャービン：幻想ソナタ
  type: MusicAlbum
  date published: 2000
album: ピアノ・アンコール
  type: MusicAlbum
  date published: 2000