The two-volume set constitutes revised selected papers from the 30th International Conference on Financial Cryptography and Data Security, FC 2026, St. Kitts, St. Kitts and Nevis, March 2–6, 2026.The 42 full papers, together with 4 short papers included in the proceedings were carefully reviewed and selected from 246 submissions. Financial Cryptography and Data Security (FC) is a leading international conference focused on security and information assurance in commercial and financial environments. It covers both theoretical and practical aspects of securing transactions, systems, and digital commerce, including cryptography, system security, and interdisciplinary approaches. The conference brings together researchers, industry experts, economists, bankers, implementers, and policy-makers to discuss current challenges and innovations in financial and data security.
