Kou Ikeda
type: MusicGroup
popularity: 19
followers: 160
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce6b98ba2a7f7b70beae177cb772ef9fbbdddb52a35c250e74a785f47eadff0b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953727
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953727
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91714ec1-5d05-47b8-995a-1117dce5c182.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/91714ec1-5d05-47b8-995a-1117dce5c182.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/91714ec1-5d05-47b8-995a-1117dce5c182
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:33:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce6b98ba2a7f7b70beae177cb772ef9fbbdddb52a35c250e74a785f47eadff0b","name":"Kou Ikeda","registered_at":"2026-06-14T19:45:37Z","symbol":"NIM0557257","token_address":"0x5d455e0dc74dfc45833fd7d0b72a0bda3b2b28f7","type":"artist","uuid":"91714ec1-5d05-47b8-995a-1117dce5c182"}
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 0xce6b98ba2a7f7b70beae177cb772ef9fbbdddb52a35c250e74a785f47eadff0b. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91714ec1-5d05-47b8-995a-1117dce5c182.json and https://artists.proofprofile.net/proofs/artist/91714ec1-5d05-47b8-995a-1117dce5c182.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T02:33:01Z
  text: {"copyright_id":"0xce6b98ba2a7f7b70beae177cb772ef9fbbdddb52a35c250e74a785f47eadff0b","name":"Kou Ikeda","registered_at":"2026-06-14T19:45:37Z","symbol":"NIM0557257","token_address":"0x5d455e0dc74dfc45833fd7d0b72a0bda3b2b28f7","type":"artist","uuid":"91714ec1-5d05-47b8-995a-1117dce5c182"}
album: Tobe! GUNDAM
  type: MusicAlbum
  date published: 2020-02-02
album: Eien ni Amuro
  type: MusicAlbum
  date published: 2020-02-02