Category
Smart contracts, gas, staking, scaling, and decentralized application concepts.
Learning collection
Bitcoin and Ethereum Hub
Learning path
Bitcoin and Ethereum Foundations
Coverage
9 in-depth guides
Ethereum is a programmable blockchain network. It supports smart contracts, decentralized applications, token standards, and many experiments in open financial and ownership systems.
Ethereum and Smart Contracts
Smart contracts are programs deployed to a blockchain. They can hold assets, enforce rules, and coordinate user actions, but they are only as reliable as their code and surrounding design.
Ethereum and Smart Contracts
Gas fees are transaction fees paid to use networks such as Ethereum. They help allocate scarce block space and compensate participants who process transactions.
Ethereum and Smart Contracts
Staking is participation in proof-of-stake network security by locking or delegating assets under protocol rules. It can involve rewards, but it is not guaranteed passive income.
Ethereum and Smart Contracts
Ethereum validators help propose and attest to blocks in proof of stake. Validator participation supports consensus but involves technical and economic responsibilities.
Ethereum Staking
Ethereum rollups are Layer 2 scaling systems that batch activity and use Ethereum for important settlement, data, or verification functions.
Layer 2 Networks
Token standards define common rules that wallets and applications can understand. They improve compatibility but do not prove that a token is valuable or safe.
Smart Contracts
ERC-20 is a common token standard for fungible tokens. It helps wallets and applications recognize balances, transfers, and approvals.
Smart Contracts
Smart contract audits review code for vulnerabilities and design issues, but an audit is one signal, not a guarantee that a protocol is safe.
Smart Contracts