3/ Layer 2s may be a solution to the scalability issue, enabling fast execution without compromising on decentralization or security.
Two commonly used layer-2 solutions are payment channels and rollups, with the latter having two main types—optimistic & zero-knowledge rollups.
3/ 第 2 层可能是可扩展性问题的解决方案，可在不影响去中心化或安全性的情况下实现快速执行。
两种常用的二层解决方案是支付渠道和汇总，后者有两种主要类型——乐观