How to confirm whether H1B Case Number belongs to me or not? Who and how that can be checked?

USA H1B Visa
1
  1. How to get confirmation of the Petition Number / Case number belongs to mine or not.
  2. Does the Case Number (or) Receipt sheet get tagged with the Beneficiary confirmation Number ?
  3. Who have the option to see/confirm whether this case number belongs to so and so applicant or registrant ?
  4. How to confirm whether H1B Case Number belongs to me or not? Who and how that can be checked?