What Is a Crypto Wallet?

The word “wallet” is a little misleading. A crypto wallet doesn’t hold your coins the way a leather wallet holds cash. Your coins live on a public ledger called a blockchain — they never leave it. What a wallet actually stores are the keys that prove the coins are yours and let you move them.

So the real question isn’t “where are my coins?” It’s “who controls the keys?”

Custodial vs. self-custody

• Custodial — A company (an exchange like Coinbase or Binance) holds the keys for you. You log in with a password; they can freeze, lose, or be ordered to hand over your funds. Convenient, but you’re trusting them. This is closer to a bank account than to cash.
• Self-custody — You hold the keys. No company can freeze or move your funds, and none can lose them for you either. The responsibility — and the control — is yours. The crypto saying for this is “not your keys, not your coins.”

A KeepKey is a self-custody wallet. That’s the entire point of owning one.

Hot wallets vs. cold wallets

Self-custody wallets come in two flavors, defined by whether the keys ever touch the internet:

• Hot wallet — Software on an internet-connected device (a phone app, a browser extension like MetaMask). Convenient for everyday use, but the keys live on a device that malware and websites can reach.
• Cold wallet — Keys stored on a device that stays offline. A hardware wallet is the most common kind: the keys are generated inside a dedicated device and never leave it, even when you plug it into an infected computer.

KeepKey is a hardware (cold) wallet. Your keys are created on the device, never exported, and every transaction must be approved with a physical button press.

On your KeepKey

• The device generates your keys internally and never reveals them — see Keys & Addresses.
• You hold the only backup: your recovery phrase.
• Because it’s non-custodial, KeepKey the company can’t move, freeze, or recover your funds — and neither can anyone who compromises your computer. See the Security page for the full threat model.
• Ready to set one up? Head to the Introduction and the Desktop Application.