奥田弦
type: MusicGroup
popularity: 10
followers: 135
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xed777b1875e61788e9e8093d94ffc3b5404720296ac9614a1138930e41581071
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953903
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953903
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/14ffac69-d109-456d-84ba-4629c2b23d09.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/14ffac69-d109-456d-84ba-4629c2b23d09.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/14ffac69-d109-456d-84ba-4629c2b23d09
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:05:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xed777b1875e61788e9e8093d94ffc3b5404720296ac9614a1138930e41581071","name":"奥田弦","registered_at":"2026-06-15T20:53:03Z","symbol":"NIM0828759","token_address":"0xdac1d3039868141749202609a42d618c85a4667a","type":"artist","uuid":"14ffac69-d109-456d-84ba-4629c2b23d09"}
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 0xed777b1875e61788e9e8093d94ffc3b5404720296ac9614a1138930e41581071. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14ffac69-d109-456d-84ba-4629c2b23d09.json and https://artists.proofprofile.net/proofs/artist/14ffac69-d109-456d-84ba-4629c2b23d09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:05:05Z
  text: {"copyright_id":"0xed777b1875e61788e9e8093d94ffc3b5404720296ac9614a1138930e41581071","name":"奥田弦","registered_at":"2026-06-15T20:53:03Z","symbol":"NIM0828759","token_address":"0xdac1d3039868141749202609a42d618c85a4667a","type":"artist","uuid":"14ffac69-d109-456d-84ba-4629c2b23d09"}
album: journey～ジャズピアノ・ストーリー
  type: MusicAlbum
  date published: 2024-03-27
album: 奥田弦とゆかいな学校ジャズ・ピアノ
  type: MusicAlbum
  date published: 2015-11-11