Ethereum's Beacon Chain recently celebrated its fourth anniversary, marking a significant milestone in the blockchain's evolution. Launched on December 1, 2020, the Beacon Chain was pivotal in Ethereum's shift to a proof-of-stake (PoS) consensus, allowing users to stake ETH for rewards. Researcher Justin Drake highlighted its achievements, such as reaching 10,000 consensus participants and $125 billion in economic security. However, he acknowledged areas for improvement, including better censorship resistance and faster finality. At Devcon in Bangkok, Drake proposed the "Beam Chain" as a potential successor to further Ethereum's development.