祢々切丸(CV:松田健一郎)
type: MusicGroup
popularity: 10
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd91b864d33c6a43841cd9fea1eedbbb30d54c8bdcedc0003dc81a08e1590dc13
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f89ed121-bb27-4502-bb9b-243e0fcd31c2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f89ed121-bb27-4502-bb9b-243e0fcd31c2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f89ed121-bb27-4502-bb9b-243e0fcd31c2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd91b864d33c6a43841cd9fea1eedbbb30d54c8bdcedc0003dc81a08e1590dc13","name":"祢々切丸(CV:松田健一郎)","registered_at":"2026-06-21T16:29:48Z","symbol":"NIM1975136","token_address":"0xaa61f8d1c6ab8afddf2c45f546c863f1d0a950be","type":"artist","uuid":"f89ed121-bb27-4502-bb9b-243e0fcd31c2"}
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 0xd91b864d33c6a43841cd9fea1eedbbb30d54c8bdcedc0003dc81a08e1590dc13. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f89ed121-bb27-4502-bb9b-243e0fcd31c2.json and https://artists.proofprofile.net/proofs/artist/f89ed121-bb27-4502-bb9b-243e0fcd31c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xd91b864d33c6a43841cd9fea1eedbbb30d54c8bdcedc0003dc81a08e1590dc13","name":"祢々切丸(CV:松田健一郎)","registered_at":"2026-06-21T16:29:48Z","symbol":"NIM1975136","token_address":"0xaa61f8d1c6ab8afddf2c45f546c863f1d0a950be","type":"artist","uuid":"f89ed121-bb27-4502-bb9b-243e0fcd31c2"}