What is a cold wallet?
- Author
- CRYPTO PORT Editorial
- Published
- Updated
- Reading time
- 4 min
In short
A cold wallet keeps private keys entirely offline. That makes it far harder to attack over the internet, at the cost of extra steps every time you send. It is where long-term holdings are usually kept.
Key points
- Keys are stored disconnected from the internet
- Substantially reduces exposure to online attacks
- Every transfer requires a physical step
- You still need a plan for loss or damage
Definition
Any wallet whose private keys are held in an environment with no internet connection, including hardware devices and paper backups.
As long as keys sit on an internet-connected device, malware and malicious sites remain a path to stealing them. Cold storage cuts that path physically: the key stays inside a dedicated device, which signs internally and exports only the signature.
The usual arrangement is a hot wallet for everyday amounts and a cold wallet for funds you do not plan to move — roughly the relationship between a current account and a safe, split by frequency and size.
Offline is not the same as safe. Loss, physical damage, disaster and theft of the written seed phrase all remain. Cold storage only works if a backup sits somewhere separate and you could restore from it if the device stopped working.
Watch out for
- · Cold storage assumes a seed backup you could actually restore from
- · Second-hand or unofficial devices may have been tampered with before you receive them