Wednesday, October 7, 2026
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Ethereum and smart contracts

Programmable blockchains, the fees they charge and the apps built on them.

8 guides, in reading order

  1. What is Ethereum and what is it used for?Ethereum is a public blockchain that runs programs as well as recording payments. Its coin is ether, and thousands of apps and tokens are built on it.2 min read
  2. What is a smart contract?A smart contract is a program stored on a blockchain that runs automatically when its conditions are met, with no company in the middle.2 min read
  3. What are gas fees?Gas fees are the charges users pay to have a transaction processed on Ethereum and similar blockchains. They rise when the network is busy.2 min read
  4. What is Ethereum staking?Ethereum staking means depositing ether to help run and secure the network. Stakers earn rewards in ether and can lose some of it for breaking rules.2 min read
  5. What is a dapp?A dapp, or decentralized application, is an app whose core logic runs on a blockchain through smart contracts instead of on one company's servers.2 min read
  6. What is a DAO in crypto?A DAO is an online group that pools money and makes decisions by token-holder vote, with its rules written into smart contracts on a blockchain.2 min read
  7. What is a blockchain oracle?A blockchain oracle is a service that feeds outside information, such as market prices, to smart contracts that cannot look it up themselves.2 min read
  8. What is Solana?Solana is a blockchain built to process many transactions quickly and cheaply. Its coin is SOL, and it has suffered several network outages.2 min read