Does Gumroad require SSN?

Excuse me, could you please clarify whether Gumroad requires its users to provide their Social Security Number (SSN) for any purpose? I'm curious about the security measures Gumroad has in place to protect personal information, and I'm particularly concerned about the sharing of sensitive data like SSNs. If Gumroad does indeed require SSNs, could you also explain the reasons behind this requirement and the steps the platform takes to ensure the safety and confidentiality of such information? Thank you for your time and attention.