麻帆良学園中等部2-A(相坂さよ、明石裕奈、朝倉和美、綾瀬夕映、和泉亜子、大河内アキラ)
type: MusicGroup
popularity: 9
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d0b9fd9bf81db7ec810edf373aa3bfe5d115617e8417cf44d20a802f8aa90ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953999
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953999
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31eab740-64fc-4e7b-aaba-263f6bb76037.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31eab740-64fc-4e7b-aaba-263f6bb76037.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31eab740-64fc-4e7b-aaba-263f6bb76037
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:20:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8d0b9fd9bf81db7ec810edf373aa3bfe5d115617e8417cf44d20a802f8aa90ee","name":"麻帆良学園中等部2-A(相坂さよ、明石裕奈、朝倉和美、綾瀬夕映、和泉亜子、大河内アキラ)","registered_at":"2026-06-16T06:53:09Z","symbol":"NIM0972045","token_address":"0xb35b13cb6cf095cb5729e858e81bf2aa123ffc0f","type":"artist","uuid":"31eab740-64fc-4e7b-aaba-263f6bb76037"}
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 0x8d0b9fd9bf81db7ec810edf373aa3bfe5d115617e8417cf44d20a802f8aa90ee. Chain 2 (Bitcoin): anchored in block 953999 (2026-06-16T20:20:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31eab740-64fc-4e7b-aaba-263f6bb76037.json and https://artists.proofprofile.net/proofs/artist/31eab740-64fc-4e7b-aaba-263f6bb76037.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:20:58Z
  text: {"copyright_id":"0x8d0b9fd9bf81db7ec810edf373aa3bfe5d115617e8417cf44d20a802f8aa90ee","name":"麻帆良学園中等部2-A(相坂さよ、明石裕奈、朝倉和美、綾瀬夕映、和泉亜子、大河内アキラ)","registered_at":"2026-06-16T06:53:09Z","symbol":"NIM0972045","token_address":"0xb35b13cb6cf095cb5729e858e81bf2aa123ffc0f","type":"artist","uuid":"31eab740-64fc-4e7b-aaba-263f6bb76037"}
album: ハッピー☆マテリアル
  type: MusicAlbum
  date published: 2005-02-16