Proof of purchase refers to a document or receipt that serves as evidence of a transaction between a buyer and a seller. It serves as a tangible record of the purchase, typically including details such as the date, item(s) purchased, price, and method of payment. This document is often required for returns, exchanges, or warranty claims, and serves as a safeguard against fraud or disputes. In today’s digital age, proof of purchase can also include electronic receipts or order confirmations. It is an essential piece of documentation that validates the legitimacy of a purchase and provides peace of mind for both the buyer and seller.