Chapter
Ξ Master Ethereum
Learn how Ethereum works as a programmable blockchain, from smart contracts and gas to staking, Layer 2s, and DeFi.
Free to play. No ads, no token, no account needed to start.
- What Ethereum isBitcoin was built mainly to move one kind of money. Ethereum went further: it is a global blockchain that can…
- Smart contractsA smart contract is a small program stored on Ethereum. It holds rules like if this happens, then do that…
- The EVM and gasEvery Ethereum computer runs the same software engine called the EVM, short for Ethereum Virtual Machine. When…
- Accounts and ETH as fuelBitcoin tracks money as separate chunks, a bit like a wallet full of specific bills. Ethereum instead uses…
- Tokens and NFTsAnyone can create a token on Ethereum by writing a smart contract. To make wallets and apps understand these…
- The DAO hack and the forkIn 2016 a project called The DAO raised a huge pile of ETH through a smart contract. Attackers found a flaw in…
- The Merge to proof of stakeEthereum used to secure itself with proof of work, the same energy-hungry mining that Bitcoin uses. In…
- Staking and validatorsTo run a validator on your own, you lock up 32 ETH as a deposit. That stake is your promise to behave. Do the…
- EIP-1559 and fee burningIn 2021 an upgrade called EIP-1559 changed how gas fees work. Before it, users had to guess a bid and often…
- Rollups and Layer 2sEthereum's main chain, called Layer 1, is secure but can get slow and pricey when busy. Layer 2 networks, or…
- DeFi, stablecoins, and MEVDeFi, short for decentralized finance, is a wave of apps on Ethereum that let people trade, lend, and borrow…
- Wallets, risks, and the big pictureA wallet is how you hold and use ETH and tokens. A self-custody wallet gives you a secret seed phrase that…