What Is Web3?
Web3 is an internet where users own their own accounts and assets.
What Is a Blockchain?
A blockchain is a public ledger maintained by a network, visible to everyone, and hard for any single party to tamper with.
Public Chains, Layer 1, and Layer 2
A public chain is a blockchain network anyone can use. Layer 1 is the base chain. Layer 2 is a faster, cheaper layer built on top.
What Is Gas?
Gas is the network fee you pay for an on-chain action. Part of it compensates validators or miners, and on some chains part of it is burned by the p…
Wallets, Addresses, Private Keys, and Seed Phrases
A wallet is a key manager. An address is like a public safe number. A private key is the key itself. A seed phrase is the master recovery key for a…
Hot Wallets vs Cold Wallets
A hot wallet is connected to the internet and convenient but riskier. A cold wallet keeps signing keys offline and is safer but less convenient.
What Is Signing?
Signing means using your private key to stamp approval on a piece of data. Many thefts happen because users are tricked into stamping the wrong thing.
Tokens, Coins, and Token Standards
A coin is the native currency of a blockchain. A token is an asset issued on top of a blockchain, usually through a smart contract.
Stablecoins
Stablecoins are tokens that try to stay near 1 dollar. They are a bridge between crypto markets and the real world.
NFTs
An NFT is a unique on-chain certificate. It is not usually the image itself. It proves that a certain token ID belongs to a certain address.
What Is DeFi?
DeFi means decentralized finance. It rebuilds parts of banking, trading, lending, and asset management with smart contracts. Core rules run on-chain…
DEXs and AMMs
A DEX is an on-chain exchange. An AMM is the most common pricing mechanism: instead of an order book, it uses a mathematical formula.
DAOs
A DAO is a decentralized autonomous organization: a group that uses wallets and voting to manage a shared treasury or project. Ideally, no single CE…
Centralized Exchanges vs Decentralized Exchanges
A CEX is a company-run exchange. A DEX is an on-chain trading contract or protocol. They are not enemies; they solve different problems.
Common Scams and How to Avoid Them
Web3 is a dream environment for scammers: transactions are hard to reverse, support is limited, and users must understand what they sign.
Glossary
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