I am working on a startup that provides a website for sneaker purchases between buyers and sellers (similar to EBay's business model). The website provides buyers security and comfort in knowing that their sneaker purchase from a private seller is authentic. The mechanism to provide authenticity is still in the works - hence why I started this thread. Would you be comfortable with your purchase being authentic if: The seller provides pictures of the receipt, box, and shoe’s UPC with a written time stamp of when the picture was taken. Is this enough information to provide a buyer enough confidence in the shoe’s authenticity with matching UPC codes and recent pictures? Thanks for your feedback, you're really helping my team out Just curious if anyone has additional thoughts here. What would streamline the process for buying / selling / authenticating sneakers for you?