What is a crypto wallet?

A crypto wallet is a software or device arrangement for viewing addresses and balances and, with the required authority, signing transactions or requesting signatures. Crypto assets do not travel as files stored inside the app; ownership and balances are tracked through the relevant blockchain records.

What does a wallet manage?

The interface interacts with an account. Keys may be on the user’s device, in separate hardware or with a custody provider. Ethereum.org’s wallet explanation distinguishes the account, address and interface.

A watch-only wallet can display address activity without signing authority. Seeing a balance does not mean you can spend it.

Viewing the same address in two applications

Example

Imagine monitoring the same address on the same network through two interfaces. Seeing the balance twice does not create more assets: both are windows onto the same record. Moving where keys are used can change security conditions, but changing the app does not duplicate the balance.

A block explorer can also show activity. Reading it requires neither a private key nor recovery words.

When choosing a product, the wallet selection guide compares key control, custody and recovery arrangements.

To apply the definition to product selection, our five-wallet comparison examines network support, app connections and recovery arrangements across concrete choices.