ケイ (CV.川澄綾子)
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x14b098e74c26d02e50023f2074910cc459cea72c6ebec02c32d7ab53c292a218
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954014
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954014
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:46:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x14b098e74c26d02e50023f2074910cc459cea72c6ebec02c32d7ab53c292a218","name":"ケイ (CV.川澄綾子)","registered_at":"2026-06-16T06:55:40Z","symbol":"NIM0972655","token_address":"0xab2a8c8dd80a682fb5b49a27afe028a42ac0c6b9","type":"artist","uuid":"31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc"}
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 0x14b098e74c26d02e50023f2074910cc459cea72c6ebec02c32d7ab53c292a218. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc.json and https://artists.proofprofile.net/proofs/artist/31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0x14b098e74c26d02e50023f2074910cc459cea72c6ebec02c32d7ab53c292a218","name":"ケイ (CV.川澄綾子)","registered_at":"2026-06-16T06:55:40Z","symbol":"NIM0972655","token_address":"0xab2a8c8dd80a682fb5b49a27afe028a42ac0c6b9","type":"artist","uuid":"31cc4f2c-e28a-4252-bc7e-b5da7fc9d9dc"}