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arXiv · 2204.09796

Distributed Runtime Verification of Metric Temporal Properties for Cross-Chain Protocols

Ritam Ganguly·Yingjie Xue·Aaron Jonckheere·Parker Ljung·Benjamin Schornstein·Borzoo Bonakdarpour·Maurice Herlihy
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Abstract

Transactions involving multiple blockchains are implemented by cross-chain protocols. These protocols are based on smart contracts, programs that run on blockchains, executed by a network of computers. Because smart contracts can automatically transfer ownership of cryptocurrencies, electronic securities, and other valuable assets among untrusting parties, verifying the runtime correctness of smart contracts is a problem of compelling practical interest. Such verification is challenging since smart contract execution is time-sensitive, and the clocks on different blockchains may not be perfectly synchronized. This paper describes a method for runtime monitoring of blockchain executions. First, we propose a generalized runtime verification technique for verifying partially synchronous distributed computations for the metric temporal logic (MTL) by exploiting bounded-skew clock synchronization. Second, we introduce a progression-based formula rewriting scheme for monitoring \MTL specifications which employ SMT solving techniques and report experimental results.

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Ritam Ganguly, Yingjie Xue, Aaron Jonckheere, Parker Ljung, Benjamin Schornstein, Borzoo Bonakdarpour, Maurice Herlihy. 2022-04-20. Distributed Runtime Verification of Metric Temporal Properties for Cross-Chain Protocols. https://arxiv.org/abs/2204.09796

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