Ethereum

Ethereum is the largest smart-contract platform, and most of what people mean by "crypto beyond Bitcoin" runs on it or on something it inspired. This section covers how Ethereum works and why it keeps changing: the move to proof of stake, the shift of activity onto rollups, and what any of that actually means for an ordinary holder. We also cover the part beginners feel first, which is fees. If a gas bill has ever surprised you, read why gas fees rise and fall and check the current cost with our fee estimator before you transact. Educational coverage only, never advice.