Annotation: The task of protecting nodes of a blockchain system from security threats of user deanonymization, access restriction, and imposition of false data about the blockchain state is considered. A method of anonymizing the network traffic between nodes of a blockchain system based on garlic routing, supporting integration with consensus mechanism, has been proposed. As a result of experimental study, it is demonstrated that the presented method allows increasing the safety of blockchain systems applied in large-scale network infrastructures.

Keywords: deanonymization, blockchain, distributed ledger, network traffic, smart city, garlic routing