What is Cold wallet?
A crypto wallet kept offline (usually a hardware device) so hackers can't reach the keys via the internet.
A cold wallet keeps your private keys on a device that never touches the internet — typically a purpose-built hardware wallet the size of a USB stick. Transactions are signed inside the device, so even a malware-riddled computer never sees the keys. It's the storage grade used for serious, long-term holdings.
The trade-off is friction: spending requires the device, a PIN and physical button presses, which is exactly the point. The standard pattern pairs a cold wallet for savings with a hot wallet for day-to-day amounts — the crypto equivalent of a term deposit plus a spending account. Where people actually lose money in this decision is covered in our wallet deep-dive.
See it in practice
Related terms: Hot wallet · Seed phrase · Custodial · full glossary
FAQ
Do I need a hardware wallet?
A common rule of thumb: once your holdings exceed what you'd carry as cash in your pocket, offline storage starts earning its ~$100–250 price. Below that, a reputable software wallet or exchange with strong 2FA is a defensible choice.
What if my hardware wallet breaks or is lost?
Nothing is lost — the coins live on the blockchain, not the device. Restore your seed phrase into a new device and everything reappears. The seed phrase, not the gadget, is the thing to protect.
General information only, not financial advice. Definitions are maintained in our fact database and reviewed with the daily rebuild.