The CheckMate tool automates the verification of game-theoretic security properties in blockchain protocols. It focuses on ensuring Byzantine fault tolerance and incentive compatibility, crucial for decentralized finance. By analyzing extensive form games, CheckMate determines weak(er) immunity, collusion resilience, and practicality to ensure game-theoretic security. The tool employs first-order arithmetic reasoning engines to prove these properties efficiently. With a new implementation in C++ integrated with the Z3 solver, CheckMate enhances case splitting and counterexample generation for improved efficiency. Experimental results demonstrate significant performance gains over previous versions, enabling the analysis of real-world protocols.
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