This book constitutes the thoroughly refereed post-proceedings of the 5th International Conference on Financial Cryptography, FC 2001, held in Grand Cayman, British West Indies, in February 2001. The 20 revised full papers presented together with various panel statements and one invited paper were carefully selected during two rounds of reviewing and improvement. The papers are organized in topical sections on managing payment transaction costs, trust and risk management, groups and anonymity, certificates and authentication, credit card security, markets and multiparty computation, digital signatures and financial cryptography, and auctions.