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A crypto wallet is a tool that stores the private and public keys used to access and manage cryptocurrency. It doesn’t actually hold coins; the coins stay recorded on the blockchain. The wallet lets you view balances, receive funds to your public address, and authorize outgoing transactions with your private key. In short, it manages the keys that prove ownership and control your crypto.

A hot wallet is connected to the internet, such as a mobile or exchange wallet, making it convenient for frequent use but more exposed to hacking. A cold wallet stays offline, for example a hardware device or paper backup, offering stronger security for long-term storage. Many people use a hot wallet for small, everyday amounts and a cold wallet for larger holdings.

With a custodial wallet, a third party such as an exchange holds your private keys and manages security for you, which is convenient but requires trusting that provider. With a non-custodial wallet, you alone hold the keys and have full control, but also full responsibility for backups and security. The core trade-off is convenience versus control over your own funds.

Wallet safety depends on the type and how carefully you use it. Cold, non-custodial wallets are generally most secure because keys stay offline and under your control. Hot and custodial wallets are more convenient but face greater risks from hacking or provider failure. Common threats include phishing, malware, and losing your recovery phrase. Strong security habits matter far more than the wallet brand alone.

A seed phrase, also called a recovery phrase, is a list of typically 12 to 24 words generated when you set up a non-custodial wallet. It can restore access to your funds if your device is lost or damaged. Anyone who obtains it can take your crypto, so it must be stored offline and never shared. Losing it usually means losing access permanently.

If you buy actual crypto, it is held in a custodial account or a wallet whose keys you control. If you trade a crypto CFD with a broker, you do not own the underlying coins and do not need a crypto wallet or seed phrase for that CFD position. CFDs involve margin, spread and potentially overnight financing costs.