What is a proof of service and when is it used?

• A. A transcript of a service hearing.
• B. A sworn document confirming service of process, including who was served, when, and where.
• C. A notation in the docket of service events.
• D. A letter from opposing counsel acknowledging receipt.

Answer: (B)

A proof of service is a sworn document filed with the court that confirms the delivery of legal papers to the parties involved. It provides essential details: who was served, when the service happened, where it occurred, and how the documents were delivered. This sworn statement ensures the court can verify that service of process occurred properly and within any required deadlines, which is necessary for the case to proceed or for deadlines to be calculated (for example, when a response is due or a motion can be heard).

This is the best choice because it precisely describes a formal, verifiable record of service that courts rely on. A transcript of a service hearing isn’t the usual record of service itself; a docket notation lacks the sworn, detailed confirmation needed to prove service; and a letter from opposing counsel acknowledging receipt doesn’t provide the sworn, official proof required by the court.