Andrea Bracciali; Jeremy Clark; Federico Pintore; Peter B. Rønne; Massimiliano Sala2023-12-172023-12-172020https://link.springer.com/978-3-030-43725-1https://libebook.kku.ac.th/handle/123456789/3300This book constitutes the refereed proceedings of two workshops held at the 23rd International Conference on Financial Cryptography and Data Security FC 2019 in St. Kitts St. Kitts and Nevis in February 2019.