This paper presents Adamastor, a new low latency and scalable decentralized anonymous payment system, which is an extension of Ring Confidential Transactions (RingCT) that is compatible with consensus algorithms that use Delegated Proof of Stake (DPoS) as a defense mechanism against Sybil attacks. Adamastor also includes a new Decoy Selection Algorithm (DSA) that can be of independent interest, called SimpleDSA, a crucial aspect of protocols that use ring signatures to anonymize the sender. SimpleDSA offers security against homogeneity attacks and chain analysis. Moreover, it enables the pruning of spent outputs, addressing the issue of perpetual output growth commonly associated with such schemes. Adamastor is implemented and evaluated using the Narwhal consensus algorithm, demonstrating significantly lower latency compared to Proof of Work based cryptocurrencies. Adamastor also exhibits ample scalability, making it suitable for a decentralized and anonymous payment network.

翻译：本文介绍了Adamastor，一种新颖的低延迟且可扩展的去中心化匿名支付系统，它是环机密交易（RingCT）的扩展，并与使用委托权益证明（DPoS）作为抵御女巫攻击防御机制的共识算法相兼容。Adamastor还包含一种可独立应用的新颖诱饵选择算法（DSA），称为SimpleDSA，该算法是使用环签名来匿名化发送方的协议中的一个关键方面。SimpleDSA能够抵御同质性攻击和链分析。此外，它还支持已花费输出的剪枝，解决了此类方案中常见的输出持续增长问题。Adamastor采用Narwhal共识算法进行实现和评估，与基于工作量证明的加密货币相比，其延迟显著降低。Adamastor还展现出良好的可扩展性，使其适用于去中心化匿名支付网络。