What is a crypto wallet?
Your wallet doesn't hold coins. It holds the keys that control them, and that changes everything about keeping it safe.
A crypto wallet, also called a blockchain wallet, is an app or device that stores the private keys controlling your crypto. The coins themselves stay on the blockchain; the wallet proves they're yours and signs transactions to move them.
What a wallet really stores
Your coins never leave the blockchain. What a wallet keeps is your private key, the secret that lets you spend them, and from it your public address, where people can send you crypto. Lose the key and the coins are stuck forever; let someone else see it and they can take them.
Custodial vs. self-custody
| Compare | Custodial (an exchange holds keys) | Self-custody (you hold keys) |
|---|---|---|
| Example | Your balance on an exchange app | A wallet app you set up yourself, or a hardware wallet |
| Forgot your password | The company can help you recover access | Only your seed phrase can restore it |
| If the company fails or freezes accounts | Your coins can be stuck or lost | Not affected |
| Main risk | Trusting the company | Losing or leaking your seed phrase |
| Good for | Small amounts and frequent trading, while learning | Larger amounts held for a long time |
The crypto saying "not your keys, not your coins" means that if a company holds the keys, you're trusting it like a bank, without bank deposit insurance on the crypto.
Hot wallets vs. cold wallets
- Hot wallet: an app on your phone, computer or browser that's connected to the internet. Convenient for spending and using apps, but exposed to malware and phishing.
- Cold wallet: keys kept offline, usually on a hardware wallet, a small device that signs transactions without the key ever touching your computer. Safer for savings.
Many people use both: a hot wallet with spending money and a cold wallet for savings, like a checking account and a safe.
Receiving crypto, step by step
- Open your wallet and choose the coin and the network (for example, USDC on Ethereum, or USDC on Solana).
- Copy your receiving address or show its QR code.
- Give it to the sender, who must use the same network.
- Wait for the transaction to confirm. You can watch it on a block explorer.
How to keep a wallet safe
- Never type your seed phrase into a website, form or chat, and never photograph it. No real support person or app will ever ask for it.
- Write the seed phrase on paper or metal and store it somewhere safe and private.
- Download wallet apps only from the official site or app store link. Fake wallet apps are common.
- Double-check addresses before sending; some malware swaps copied addresses.
- Be careful what you "approve" in your wallet. Signing a malicious approval can let a contract drain your tokens.
Check what you learned
3 quick questions. Answers stay on your device.
Frequently asked questions
What is a blockchain wallet?
The same thing as a crypto wallet: software or a device that holds the keys to your crypto on a blockchain. (Blockchain.com also sells a wallet with that name.)
Is my exchange account a wallet?
In a loose sense, yes, but it's a custodial one: the exchange holds the keys. If you want to control the keys yourself, you need a self-custody wallet.
Can I have more than one wallet?
Yes. Many people keep a small hot wallet for spending and a hardware wallet for savings. Wallets are free to create.
What happens if I lose my phone?
With a self-custody wallet, you can restore everything on a new device using your seed phrase. Without it, the coins are lost. With an exchange, you recover your login through the company.
Where to next
Sources
- Ethereum wallets (ethereum.org)
- Choose your Bitcoin wallet (bitcoin.org)
- What to know about cryptocurrency and scams (FTC)
Written for beginners and checked against the sources listed. Last reviewed October 26, 2026. This page is educational and is not financial, tax or legal advice. How we write and check pages.