きおん
type: MusicGroup
popularity: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad073069d5895b71d04fd51c0c29b0a82ffa8d173a7cb28d2f8030d6e922e8ec
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/5e085ee2-ef4d-48f7-86d4-4cd5839afa40.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e085ee2-ef4d-48f7-86d4-4cd5839afa40.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5e085ee2-ef4d-48f7-86d4-4cd5839afa40
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad073069d5895b71d04fd51c0c29b0a82ffa8d173a7cb28d2f8030d6e922e8ec","name":"きおん","registered_at":"2026-06-16T22:43:21Z","symbol":"NIM1198778","token_address":"0x995f665604377c3508ec9ed5e4b3574f7a833514","type":"artist","uuid":"5e085ee2-ef4d-48f7-86d4-4cd5839afa40"}
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 0xad073069d5895b71d04fd51c0c29b0a82ffa8d173a7cb28d2f8030d6e922e8ec. 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/5e085ee2-ef4d-48f7-86d4-4cd5839afa40.json and https://artists.proofprofile.net/proofs/artist/5e085ee2-ef4d-48f7-86d4-4cd5839afa40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xad073069d5895b71d04fd51c0c29b0a82ffa8d173a7cb28d2f8030d6e922e8ec","name":"きおん","registered_at":"2026-06-16T22:43:21Z","symbol":"NIM1198778","token_address":"0x995f665604377c3508ec9ed5e4b3574f7a833514","type":"artist","uuid":"5e085ee2-ef4d-48f7-86d4-4cd5839afa40"}
album: まかなか
  type: MusicAlbum
  date published: 2025-04-19
album: わいす
  type: MusicAlbum
  date published: 2025-04-26
album: のみす
  type: MusicAlbum
  date published: 2025-05-10
album: らていらて
  type: MusicAlbum
  date published: 2025-11-08