cv.久保田未夢
type: MusicGroup
popularity: 11
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9106b52cd68a9fc66c8d00d6ef34130401e111e711f3c8b8c42d402d6399e88
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953694
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953694
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c283cfc-0d23-42a6-8381-2a211b6a4b71.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6c283cfc-0d23-42a6-8381-2a211b6a4b71.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6c283cfc-0d23-42a6-8381-2a211b6a4b71
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:38:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb9106b52cd68a9fc66c8d00d6ef34130401e111e711f3c8b8c42d402d6399e88","name":"cv.久保田未夢","registered_at":"2026-06-14T15:50:51Z","symbol":"NIM0501327","token_address":"0xd65ec408c76541befb712d99a4304f4f7a29bd86","type":"artist","uuid":"6c283cfc-0d23-42a6-8381-2a211b6a4b71"}
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 0xb9106b52cd68a9fc66c8d00d6ef34130401e111e711f3c8b8c42d402d6399e88. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c283cfc-0d23-42a6-8381-2a211b6a4b71.json and https://artists.proofprofile.net/proofs/artist/6c283cfc-0d23-42a6-8381-2a211b6a4b71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:38:09Z
  text: {"copyright_id":"0xb9106b52cd68a9fc66c8d00d6ef34130401e111e711f3c8b8c42d402d6399e88","name":"cv.久保田未夢","registered_at":"2026-06-14T15:50:51Z","symbol":"NIM0501327","token_address":"0xd65ec408c76541befb712d99a4304f4f7a29bd86","type":"artist","uuid":"6c283cfc-0d23-42a6-8381-2a211b6a4b71"}