Hot Wallet vs Cold Wallet: Which Do You Need?
Hot wallets are convenient; cold wallets are safer. How each works, the real risks, costs and a simple rule for splitting your crypto between them.
Exchange vs Wallet: What’s the Difference?
The difference between keeping crypto on an exchange and in your own wallet: who holds the keys, what happens if things go wrong, and when to use each.
Key takeaways
- On an exchange, the company holds your keys; in a self-custody wallet, you do.
- Exchanges are convenient for buying and selling but can freeze withdrawals or fail.
- Self-custody removes company risk but makes you fully responsible for security and backups.
On this page
When you buy crypto, you have to decide where it lives: on the exchange where you bought it, or in a wallet you control. It sounds technical, but the question is simple: who holds the keys?
The key difference
Crypto isn’t stored inside a wallet like cash in a purse. It sits on a blockchain, and whoever controls the private keys can move it. An exchange account is like a bank balance: the company holds the keys and owes you the coins. A self-custody wallet means you hold the keys, usually backed up with a seed phrase.
| Exchange (custodial) | Self-custody wallet | |
|---|---|---|
| Who holds the keys | The exchange | You |
| Forgotten password | Account recovery | Seed phrase or nothing |
| Company collapses | Funds may be frozen or lost | Unaffected |
| You get hacked or scammed | Some platforms may help | Usually irreversible |
| Best for | Buying, selling, small balances | Long-term holding, control |
Why exchanges can be risky
Exchanges have failed before. When large platforms have collapsed, customers were suddenly unable to withdraw, and some waited years for partial repayment. Others have lost customer funds to hacks. Even healthy exchanges can pause withdrawals during market chaos or freeze accounts during compliance checks.
That’s the meaning of the crypto saying “not your keys, not your coins.” If you leave crypto on an exchange, you’re trusting its security, its honesty and its solvency. Choosing a well-regulated platform reduces the risk; our checklist for buying bitcoin safely explains how to check.
Why self-custody can be risky
Holding your own keys removes company risk but hands you every job a bank would do. There’s no helpline and no password reset. If you lose your seed phrase, sign a malicious transaction or send coins to the wrong address, the money is usually gone.
Types of self-custody wallet
- Software (hot) wallets: apps on your phone or computer. Convenient for everyday use; exposed to malware and phishing.
- Hardware (cold) wallets: small devices that keep keys offline and sign transactions on the device. Better for larger amounts.
- Paper or metal backups: not wallets themselves, but the offline record of your seed phrase.
Our guide to hot vs cold wallets compares them in detail.
A sensible middle ground
Many people use both: an exchange for buying and selling, and a wallet for holding. A common approach is to keep only what you’re actively trading on the exchange and move the rest to a hardware wallet. Whatever you choose, enable strong two-factor authentication on exchange accounts and practise with small transfers first.
Frequently asked questions
Is my crypto insured on an exchange?
Usually not in the way bank deposits are. Some exchanges hold insurance against specific events like hacks, but it rarely covers everything, and crypto isn’t protected by schemes such as FDIC or the FSCS.
Can an exchange freeze my account?
Yes. Exchanges can freeze accounts for security, legal or compliance reasons, and during outages. That’s one reason people move long-term holdings to their own wallets.
Which is better for beginners?
A regulated exchange is simpler to start with. Move to self-custody once you understand backups and security, starting with a small amount.
Sources
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