Obelia improves upon structured DAG-based consensus protocols used in proof-of-stake systems, allowing them to effectively scale to accommodate hundreds of validators. Obelia implements a two-tier validator system. A core group of high-stake validators that propose blocks as in current protocols and a larger group of lower-stake auxiliary validators that occasionally author blocks. Obelia incentivizes auxiliary validators to assist recovering core validators and integrates seamlessly with existing protocols. We show that Obelia does not introduce visible overhead compared to the original protocol, even when scaling to hundreds of validators, or when a large number of auxiliary validators are unreliable.

翻译：Obelia改进了权益证明系统中使用的结构化有向无环图共识协议，使其能够有效扩展至容纳数百个验证者。Obelia采用双层验证者系统：一个由高权益验证者组成的核心组按现有协议提议区块，以及一个由较低权益辅助验证者组成的大型群体偶尔生成区块。Obelia激励辅助验证者协助恢复核心验证者，并能与现有协议无缝集成。我们证明，即使扩展至数百个验证者，或当大量辅助验证者不可靠时，Obelia相比原始协议不会引入显著开销。