Author: BC. David Rýpar
Supervisor: Petr Švenda
Abstract: This thesis investigates the possibilities of anonymizing bitcoin transactions and funds. Firstly, the work analyses selected protocols that are usable for increasing bitcoin privacy. Next, the WabiSabi coinjoin protocol is analyzed in greater detail, both as described in its paper and as implemented in Wallet Wasabi 2.0. The thesis provides insight into the processes happening during the WabiSabi coinjoin in both the client and backend sides of Wallet Wasabi. Subsequently, the thesis introduces two setups for running simulations of WabiSabi conjoins – a local setup implemented as part of the work and an extension of a containerized setup. Lastly, the impact of selected parameters on the anonymity achieved with WabiSabi coinjoins is experimentally analyzed using the containerized setup.