What is a crypto wallet?
A crypto wallet doesn't actually store your coins — it stores the private keys that prove ownership of your on-chain assets. Your coins live on the blockchain; your wallet is the key that unlocks them.
Hot wallets vs cold wallets
- Hot wallets (MetaMask, Trust Wallet) are connected to the internet — convenient for DeFi but less secure for large holdings
- Cold wallets (Ledger, Trezor) are offline hardware devices — more secure but less convenient
How wallets work with DeFi
When you use a DeFi protocol, you connect your wallet to the dApp. The dApp proposes a transaction; your wallet shows you what it will do (e.g. "approve 1,000 USDT to contract 0x..."). You sign it with your private key. The blockchain executes it.
Seed phrases — the most important thing to understand
Your wallet is backed by a seed phrase (12 or 24 words). Anyone with your seed phrase controls your wallet. Write it down, store it offline, never share it. There is no recovery if you lose it.
Recommended wallets for BNB Smart Chain
- MetaMask — most widely used, browser extension + mobile
- Trust Wallet — mobile-first, built by Binance
- Binance Web3 Wallet — integrated with Binance exchange