Ethereum (ETH 1.57%) is the decentralized, open-source technology that powers much of the crypto world. Everything from decentralized finance (DeFi) applications and non-fungible tokens (NFTs) to enterprise blockchain solutions relies on Ethereum's technology. Ethereum's native token, Ether, is the second-largest cryptocurrency after Bitcoin (BTC -0.58%). The Ethereum Merge, the network's long-awaited shift to a proof-of-stake system, is expected to make the technology remarkab...