Most modern asset transfer systems use consensus to maintain a totally ordered chain of transactions. It was recently shown that consensus is not always necessary for implementing asset transfer. More efficient, asynchronous solutions can be built using reliable broadcast instead of consensus. This approach has been originally used in the closed (permissioned) setting. In this paper, we extend it to the open (permissionless) environment. We present Pastro, a permissionless and asynchronous asset-transfer implementation, in which quorum systems, traditionally used in reliable broadcast, are replaced with a weighted Proof-of-Stake mechanism. Pastro tolerates a dynamic adversary that is able to adaptively corrupt participants.

大多数现代资产转移系统使用共识来维护完全有序的交易链。最近表明，实施资产转移并不总是需要达成共识。可以使用可靠的广播而不是共识来构建更高效的异步解决方案。这种方法最初用于封闭（许可）设置。在本文中，我们将其扩展到开放（无许可）环境。我们介绍了Pastro，一种无需许可的异步资产转移实现，其中传统上用于可靠广播的仲裁系统被加权权益证明机制所取代。Pastro容忍能够自适应地腐蚀参与者的动态对手。