This document discusses the emergence of digital currency systems as a B2B e-commerce alternative during monetary crises in the United States, highlighting their potential advantages over traditional payment systems. It categorizes digital currencies into five main types and addresses the historical context and issues driving businesses to adopt these systems, such as governmental policies and financial instability. The paper concludes that digital currency systems could serve as vital tools for business continuity in unstable economic conditions, yet they remain underutilized in the U.S.