Mio Watakabe
type: MusicGroup
popularity: 4
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ed33268f87f4daa6cec5260a712d5c8eb0e36aad05fbfb7a88274d6e0dd7ce4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc922f4d-f108-41b7-86d2-47d39bd27bce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc922f4d-f108-41b7-86d2-47d39bd27bce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dc922f4d-f108-41b7-86d2-47d39bd27bce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ed33268f87f4daa6cec5260a712d5c8eb0e36aad05fbfb7a88274d6e0dd7ce4","name":"Mio Watakabe","registered_at":"2026-06-21T04:52:19Z","symbol":"NIM1825430","token_address":"0xe99939a835c776b3130f58f7197fea7ec8d6c432","type":"artist","uuid":"dc922f4d-f108-41b7-86d2-47d39bd27bce"}
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 0x7ed33268f87f4daa6cec5260a712d5c8eb0e36aad05fbfb7a88274d6e0dd7ce4. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc922f4d-f108-41b7-86d2-47d39bd27bce.json and https://artists.proofprofile.net/proofs/artist/dc922f4d-f108-41b7-86d2-47d39bd27bce.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x7ed33268f87f4daa6cec5260a712d5c8eb0e36aad05fbfb7a88274d6e0dd7ce4","name":"Mio Watakabe","registered_at":"2026-06-21T04:52:19Z","symbol":"NIM1825430","token_address":"0xe99939a835c776b3130f58f7197fea7ec8d6c432","type":"artist","uuid":"dc922f4d-f108-41b7-86d2-47d39bd27bce"}