Mike Callaghan
type: MusicGroup
description: Mike Callaghan (born March 31, 1963) is a former Assistant United States Attorney and a politician. In 2006, he was the Democratic nominee for West Virginia's 2nd congressional district. He unsuccess
popularity: 2
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb60e064ee10494bf59f333017d5bd0692a4885ffda1f4ae151bc0afa78df2c9f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41e358a4-b00e-40a7-a1e8-44c199a24716.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41e358a4-b00e-40a7-a1e8-44c199a24716.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41e358a4-b00e-40a7-a1e8-44c199a24716
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb60e064ee10494bf59f333017d5bd0692a4885ffda1f4ae151bc0afa78df2c9f","name":"Mike Callaghan","registered_at":"2026-06-16T12:33:45Z","symbol":"NIM1053326","token_address":"0xfd24dabc7137b0a20788fc95749aafe8e4752a09","type":"artist","uuid":"41e358a4-b00e-40a7-a1e8-44c199a24716"}
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 0xb60e064ee10494bf59f333017d5bd0692a4885ffda1f4ae151bc0afa78df2c9f. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41e358a4-b00e-40a7-a1e8-44c199a24716.json and https://artists.proofprofile.net/proofs/artist/41e358a4-b00e-40a7-a1e8-44c199a24716.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0xb60e064ee10494bf59f333017d5bd0692a4885ffda1f4ae151bc0afa78df2c9f","name":"Mike Callaghan","registered_at":"2026-06-16T12:33:45Z","symbol":"NIM1053326","token_address":"0xfd24dabc7137b0a20788fc95749aafe8e4752a09","type":"artist","uuid":"41e358a4-b00e-40a7-a1e8-44c199a24716"}