日本国有鉄道
type: MusicGroup
popularity: 2
followers: 261
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2859b33a214225fbe622076ac5f1ee7f1f983f965a174f8bb78b75fb86ed4ae9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a872b8c-5177-4400-91f5-5cd708b6fc4a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a872b8c-5177-4400-91f5-5cd708b6fc4a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a872b8c-5177-4400-91f5-5cd708b6fc4a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2859b33a214225fbe622076ac5f1ee7f1f983f965a174f8bb78b75fb86ed4ae9","name":"日本国有鉄道","registered_at":"2026-06-16T21:28:17Z","symbol":"NIM1180876","token_address":"0x50b5d29408907d05cfaa0dabca159f38819e349e","type":"artist","uuid":"5a872b8c-5177-4400-91f5-5cd708b6fc4a"}
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 0x2859b33a214225fbe622076ac5f1ee7f1f983f965a174f8bb78b75fb86ed4ae9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a872b8c-5177-4400-91f5-5cd708b6fc4a.json and https://artists.proofprofile.net/proofs/artist/5a872b8c-5177-4400-91f5-5cd708b6fc4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x2859b33a214225fbe622076ac5f1ee7f1f983f965a174f8bb78b75fb86ed4ae9","name":"日本国有鉄道","registered_at":"2026-06-16T21:28:17Z","symbol":"NIM1180876","token_address":"0x50b5d29408907d05cfaa0dabca159f38819e349e","type":"artist","uuid":"5a872b8c-5177-4400-91f5-5cd708b6fc4a"}
album: iJockey 国鉄ふるさとの駅「東日本」
  type: MusicAlbum
  date published: 2007-02-10
album: iJockey 国鉄ふるさとの駅「東日本」
  type: MusicAlbum
  date published: 2007-02-10
album: iJockey 国鉄ふるさとの駅「西日本」
  type: MusicAlbum
  date published: 2007-03-10
album: iJockey 国鉄ふるさとの駅「西日本」
  type: MusicAlbum
  date published: 2007-03-10