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Glossary

Crypto Wallet

Software or hardware that stores the keys used to send, receive and hold cryptocurrency.

Last updated: June 2026

A crypto wallet manages the private keys that prove ownership of your crypto. Wallets can be mobile apps, browser extensions, or hardware devices.

To fund a crypto card, you typically send stablecoins from your wallet to the address the card provider gives you for top-ups.

Related terms

  • Self-CustodyHolding your own crypto in a wallet you control, rather than leaving it with an exchange or provider.
  • USDT (Tether)The most widely used US-dollar stablecoin, commonly used to fund crypto cards because its value stays near $1.
  • Top-UpAdding funds to a prepaid card balance — on a crypto card, by depositing stablecoins such as USDT.

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