This book constitutes the revised selected papers from the workshops affiliated with the 27th International Conference on Financial Cryptography and Data Security, FC 2023, which took place in Bol, Brač, Croatia, in May 2023. The 7 full papers presented in this book were carefully reviewed and selected from 18 submissions. They stem from the following workshops: CoDecFin 2022: 3rd Workshop on Coordination of Decentralized Finance DeFi 2022: 2nd Workshop on Decentralized Finance Voting 2022: 7th Workshop on Advances in Secure Electronic Voting WTSC 2022: 6th Workshop on Trusted Smart Contracts.