Abstract
Blockchain is becoming more popular with a combination of blockchain and the Internet of Things. The combination system is called IoT-blockchain system. Smart contracts play a critical role in IoT-blockchain systems. It can enable a wholly trusted transaction with no third parties. Therefore, the security of smart contracts needs to be guaranteed. To detect vulnerabilities in smart contracts, we use formal verification methods. We use Programming in logic (Prolog) theory to model contract programs. Then SWI-Prolog is utilized to check the model. In our paper, we use this formal method to check the vulnerability of smart contracts in Town Crier. The results show that Town Crier’s contracts satisfy the key security properties.
Published Version
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