In 2022, Ethereum plans to switch to proof-of-stake with its Ethereum 2.0 update. This switch has been in the Ethereum roadmap since the network's inception and would see a new consensus mechanism, as well as introduce sharding as a scaling solution. The current Ethereum chain will become the Beacon Chain and serve as a settlement layer for smart contract interactions on other chains. In late 2021, Ethereum's Arrow Glacier update was delayed to June 2022. Until then, Vitalik Buterin...