We introduce a zero-knowledge cryptocurrency mixer framework that allows groups of users to set up a mixing pool with configurable governance conditions, configurable deposit delays, and the ability to refund or confiscate deposits if it is suspected that funds originate from crime. Using a consensus process, group participants can monitor inputs to the mixer and determine whether the inputs satisfy the mixer conditions. If a deposit is accepted by the group, it will enter the mixer and become untraceable. If it is not accepted, the verifiers can freeze the deposit and collectively vote to either refund the deposit back to the user, or confiscate the deposit and send it to a different user. This behaviour can be used to examine deposits, determine if they originate from a legitimate source, and if not, return deposits to victims of crime.

翻译：我们提出了一种零知识加密货币混合器框架，该框架允许用户群体建立具有可配置治理条件、可配置存款延迟的混合池，并能够在怀疑资金来源于犯罪活动时退款或没收存款。通过共识流程，群体参与者可以监控混合器的输入并判断输入是否满足混合器条件。若存款被群体接受，则进入混合器并变得不可追踪。若未被接受，验证者可冻结该存款并集体投票决定将存款退还用户，或没收存款并转移至其他用户。此机制可用于审查存款、判断其是否来源于合法渠道，若非法则可将存款返还犯罪受害者。