佐藤卓史
type: MusicGroup
popularity: 3
followers: 1183
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43a1b828d3ac224bf03cb4857ed9267f92b8b3b0b7040850eebca05c63f2385d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a891d3c0-99da-4b9f-86a0-49c22e6da2a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a891d3c0-99da-4b9f-86a0-49c22e6da2a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a891d3c0-99da-4b9f-86a0-49c22e6da2a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43a1b828d3ac224bf03cb4857ed9267f92b8b3b0b7040850eebca05c63f2385d","name":"佐藤卓史","registered_at":"2026-06-20T08:54:30Z","symbol":"NIM1571358","token_address":"0x4c56150ec5b316f1c9a85ae3fb2f3eb0c68f62a3","type":"artist","uuid":"a891d3c0-99da-4b9f-86a0-49c22e6da2a7"}
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 0x43a1b828d3ac224bf03cb4857ed9267f92b8b3b0b7040850eebca05c63f2385d. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a891d3c0-99da-4b9f-86a0-49c22e6da2a7.json and https://artists.proofprofile.net/proofs/artist/a891d3c0-99da-4b9f-86a0-49c22e6da2a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
  text: {"copyright_id":"0x43a1b828d3ac224bf03cb4857ed9267f92b8b3b0b7040850eebca05c63f2385d","name":"佐藤卓史","registered_at":"2026-06-20T08:54:30Z","symbol":"NIM1571358","token_address":"0x4c56150ec5b316f1c9a85ae3fb2f3eb0c68f62a3","type":"artist","uuid":"a891d3c0-99da-4b9f-86a0-49c22e6da2a7"}
album: I've been walking
  type: MusicAlbum
  date published: 1980-04-01
album: Urban "AU-RI"
  type: MusicAlbum
  date published: 1980-11-01
album: AKOGAREWA YUMENONAKANI
  type: MusicAlbum
  date published: 1981-10-01
album: P.S. I love you
  type: MusicAlbum
  date published: 1982-08-01
album: 十六夜曲 '80～'90
  type: MusicAlbum
  date published: 1990-12-12
album: WA
  type: MusicAlbum
  date published: 2023-06-21