佐藤賢太郎
type: MusicGroup
popularity: 17
followers: 135
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4718311c8a48515141f88565422411c1fbd79f36be0d719c1b9fecdfcb6e008c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8148e8a9-079c-4b05-a00c-361c289c659e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4718311c8a48515141f88565422411c1fbd79f36be0d719c1b9fecdfcb6e008c","name":"佐藤賢太郎","registered_at":"2026-06-14T18:03:43Z","symbol":"NIM0532991","token_address":"0x663713ae0f85d3008a117a1051df6c207ff4b3b9","type":"artist","uuid":"8148e8a9-079c-4b05-a00c-361c289c659e"}
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 0x4718311c8a48515141f88565422411c1fbd79f36be0d719c1b9fecdfcb6e008c. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.json and https://artists.proofprofile.net/proofs/artist/8148e8a9-079c-4b05-a00c-361c289c659e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0x4718311c8a48515141f88565422411c1fbd79f36be0d719c1b9fecdfcb6e008c","name":"佐藤賢太郎","registered_at":"2026-06-14T18:03:43Z","symbol":"NIM0532991","token_address":"0x663713ae0f85d3008a117a1051df6c207ff4b3b9","type":"artist","uuid":"8148e8a9-079c-4b05-a00c-361c289c659e"}
album: 交響組曲: 忘れられない冒険へ, 「グランディア」より
  type: MusicAlbum
  date published: 2020-09-01
album: 交響組曲「私の心が宿る場所」（「スターデューバレー」より）
  type: MusicAlbum
  date published: 2021-01-01