What Are Cryptocurrency Wallets and How Do They Work?

A cryptocurrency wallet is software or hardware that manages keys and helps you sign blockchain transactions. Wallets do not “store” coins on your device—the network holds balances—but they control access.

Custodial vs. self-custody

Exchange accounts are custodial: the platform holds keys on your behalf. Self-custody wallets give you the seed phrase or hardware key. Self-custody means more responsibility and no password-reset button.

Choosing a wallet

• Open-source clients with reproducible builds where possible
• Clear backup and recovery instructions
• Support for memos or tags if you use exchanges
• Reputation and security history—verify independently

Summary

Match wallet type to your skill level and use case. Read How to Secure a Cryptocurrency Wallet before holding meaningful amounts.