DeFi is banking without banks. No KYC. No office hours. No middleman. Just code that holds and moves money 24/7. Here's everything you need to know in 5 minutes.
Decentralised Finance (DeFi) is a system of financial apps built on blockchains (mostly Ethereum and Solana). Smart contracts — self-executing code — replace banks, brokers, and exchanges. You trade, lend, borrow, and earn yield directly from your wallet. No account, no approval needed.
1. DEXs (decentralised exchanges): Trade any token instantly (Uniswap, Jupiter). 2. Lending: Earn yield by supplying assets, or borrow against collateral (Aave, Kamino). 3. Liquid staking: Stake ETH or SOL and keep a liquid token you can use in other DeFi (Lido, Marinade).
You need: (1) a self-custody wallet (MetaMask or Phantom — download free), (2) crypto to send to it (buy on CoinDCX, withdraw to your wallet). Then visit any DeFi protocol's official site and connect your wallet. Start with Aave (lending) — it's the safest, most audited protocol.
Smart contract bugs (rare but possible — use audited protocols only). Scam sites (always verify the URL). Phishing (DMs offering "double your crypto" are always scams). High yields (above 20% APY are usually a red flag). DeFi is powerful — but it requires careful attention to security.
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