What is the Ghost protocol in ethereum?
Could you please elaborate on what the Ghost protocol in Ethereum entails? I'm curious about how it works and its significance within the Ethereum network. Specifically, how does it contribute to the consensus mechanism and improve the overall performance of the blockchain? Is it a recently introduced feature, or has it been a part of Ethereum's architecture from the beginning? Additionally, are there any potential drawbacks or challenges associated with the Ghost protocol that developers need to be aware of?