Blockchain as a promising technology is gaining its popularity ever since proof-of-work based Bitcoin came to the world. Nevertheless, Bitcoin achieves consensus at an expensive cost of energy. Proof-of-stake is one of the solutions for such a problem. Participants of PoS protocols achieve dynamic-availability in permissionless settings. Parties can join and leave the protocol at their will without notifying others. However, such protocol relies heavily on a central clock, providing the function of synchrony by collecting the finish status of every honest participant. In our protocol, the global function maintains the round information for each participant no longer needed. We analyze and modify the round into real-time based round model. Message delivery delay is also taken into consideration of the round length. However, participant need the connection of a real-world time global clock which is crucial to calculate the current round. And round length also is adjusted due to the changing network situation at the start of every new epoch.

翻译：作为一种前景广阔的技术，区块链自基于工作量证明的比特币问世以来日益普及。然而，比特币以高昂的能源消耗为代价实现共识。权益证明是解决该问题的方案之一。PoS协议的参与方在无许可环境中实现动态可用性，参与方可随时自由加入或退出协议而无需通知其他方。但此类协议严重依赖中心化时钟，通过收集每个诚实参与方的完成状态来提供同步功能。在我们的协议中，全局函数不再需要为每个参与方维护轮次信息。我们分析并将轮次模型修改为基于实时时间的轮次模型，消息传递延迟也被纳入轮次长度的考量。然而，参与方仍需连接现实世界的时间全局时钟，这对计算当前轮次至关重要。此外，在每个新纪元开始时，轮次长度会根据变化的网络状况进行动态调整。