Goldfish: the forgetful fork-choice (opens in new tab)

In a previous post, we explained how LMD-GHOST worked. This post is about its problems, and how Goldfish fixes them. Latest Message Driven GHOST (LMD-GHOST) is the fork-choice rule of Ethereum's beacon chain. Balancing attacks were found, exploiting a lack of coordination inherent in the algorithm, so a patch was