Cold wallet
A cold wallet is a crypto wallet that stores your private keys offline. This helps protect them from online attacks.
What is a cold wallet?
A crypto wallet doesn’t store the crypto itself. It stores the keys that give you access to your crypto on the blockchain. The most important of these is the private key: a secret code that lets you send crypto.
With a cold wallet, the private key stays offline. A hardware wallet, a small physical device, is the best-known type. Ledger and Trezor wallets are examples. A paper wallet, where you keep your private key on paper, is also a form of cold storage.
Keeping the private key offline reduces the risk of online attacks by hackers and malware.
An example of a cold wallet
Suppose you buy crypto through a crypto exchange and want to store it for a long time. You could use a Ledger or Trezor hardware wallet and send your crypto to the wallet’s receiving address.
The private key stays on the device. If you want to send crypto later, you confirm the transaction with your hardware wallet. This keeps your private key offline.
Why is a cold wallet important in crypto?
Cold wallets often come up when people talk about storing crypto securely for a long time. People and businesses who prioritize security over convenience are especially likely to use this type of storage.
Offline storage mainly protects against online attacks. That doesn’t mean there’s no risk. If you lose both the device and your seed phrase, you could permanently lose access to your crypto.
When reading about wallet security, it’s important to know that a cold wallet is different from a hot wallet. A hot wallet is online and usually more convenient for everyday use, but that also makes it more vulnerable to online risks.
