论文标题
跨链付款并获得成功保证的可行性
Feasibility of Cross-Chain Payment with Success Guarantees
论文作者
论文摘要
我们考虑了跨链付款的问题，即由银行或区块链智能合约实施的不同托管的客户成功地转移了数字资产而不相互信任。在此工作之前，跨链付款问题不需要这种成功或任何形式的进度。我们证明，在假设同步时可以解决这个问题，从某种意义上说，每个消息都可以保证在已知的时间内到达，但不假定同步就无法解决。然而，我们解决了这个问题的较弱的变化，在这种情况下，成功是基于参与者的耐心，而不假设同步的，并且在存在拜占庭失败的情况下。我们还讨论了与最近定义的跨链交易的关系。
We consider the problem of cross-chain payment whereby customers of different escrows---implemented by a bank or a blockchain smart contract---successfully transfer digital assets without trusting each other. Prior to this work, cross-chain payment problems did not require this success, or any form of progress. We demonstrate that it is possible to solve this problem when assuming synchrony, in the sense that each message is guaranteed to arrive within a known amount of time, but impossible to solve without assuming synchrony. Yet, we solve a weaker variant of this problem, where success is conditional on the patience of the participants, without assuming synchrony, and in the presence of Byzantine failures. We also discuss the relation with the recently defined cross-chain deals.
