论文标题
邀请的纸：容忍和富有表现力的跨链掉期
Invited Paper: Fault-tolerant and Expressive Cross-Chain Swaps
论文作者
论文摘要
跨链掉期可以交换不同的区块链上的不同资产。已经提出了一些用于原子跨链掉期的协议。但是，这些协议不是容忍过错的，从某种意义上说，如果任何一方偏离，可能不会发生资产转移。在本文中，我们提出了两种替代方案，用于构造可构成且稳健的跨链掉期。参与者可以同时提出多次交换，然后根据他们的需求完成这些掉期的子集。他们的需求表示为谓词，可捕获每个参与者的可接受收益。因此，由于引入谓词，我们提出的协议更具表现力。所提出的协议具有容忍性的，因为即使某些参与者偏离了这些谓词，仍然可以满足这些谓词，并且符合各方可以完成一组可接受的掉期。
Cross-chain swaps enable exchange of different assets that reside on different blockchains. Several protocols have been proposed for atomic cross-chain swaps. However, those protocols are not fault-tolerant, in the sense that if any party deviates, no asset transfer can happen. In this paper, we propose two alternative protocols for structuring composable and robust cross-chain swaps. Participants can propose multiple swaps simultaneously and then complete a subset of those swaps according to their needs. Their needs are expressed as predicates which capture acceptable payoff of each participant. Our proposed protocols are thus more expressive due to the introduction of predicates. The proposed protocols are fault-tolerant since, even if some participants deviate, those predicates can still be satisfied, and conforming parties can complete an acceptable set of swaps.
