Natsu (Tetsuya Kakihara)
type: MusicGroup
popularity: 12
followers: 424
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd85266e253634550f4cc7ffd7751f3fdf9dfddbf42fb88e4bbdeb6adab70f0a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953819
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953819
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fff9b63f-f8b8-4883-8cc2-f2baba11ad61.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fff9b63f-f8b8-4883-8cc2-f2baba11ad61.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fff9b63f-f8b8-4883-8cc2-f2baba11ad61
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:31:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd85266e253634550f4cc7ffd7751f3fdf9dfddbf42fb88e4bbdeb6adab70f0a","name":"Natsu (Tetsuya Kakihara)","registered_at":"2026-06-15T07:21:10Z","symbol":"NIM0723337","token_address":"0xc983e25e7576cca5863a4fd5be43624042a287a9","type":"artist","uuid":"fff9b63f-f8b8-4883-8cc2-f2baba11ad61"}
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 0xbd85266e253634550f4cc7ffd7751f3fdf9dfddbf42fb88e4bbdeb6adab70f0a. Chain 2 (Bitcoin): anchored in block 953820 (2026-06-15T18:35:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fff9b63f-f8b8-4883-8cc2-f2baba11ad61.json and https://artists.proofprofile.net/proofs/artist/fff9b63f-f8b8-4883-8cc2-f2baba11ad61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:35:57Z
  text: {"copyright_id":"0xbd85266e253634550f4cc7ffd7751f3fdf9dfddbf42fb88e4bbdeb6adab70f0a","name":"Natsu (Tetsuya Kakihara)","registered_at":"2026-06-15T07:21:10Z","symbol":"NIM0723337","token_address":"0xc983e25e7576cca5863a4fd5be43624042a287a9","type":"artist","uuid":"fff9b63f-f8b8-4883-8cc2-f2baba11ad61"}