Custodial Wallet
A wallet where a third party, such as an exchange, holds the private keys and controls access to the crypto on your behalf.
A custodial wallet is a crypto wallet managed by a third party, such as a centralized exchange, broker, or payment app. Instead of you holding the private keys that control the funds on a blockchain, the custodian holds them and lets you access your balance through an account, password, and often identity verification. This can make crypto easier to use because the service handles key storage, backups, and transaction tools.
Custodial wallets matter because they trade personal control for convenience. If you forget your password, the provider may help you recover access, which is usually not possible with a self-custody wallet. But you also depend on the provider’s security, rules, and solvency; withdrawals can be paused, accounts can be restricted, and a breach could put funds at risk. A common example is keeping bitcoin or ether on an exchange after buying it, compared with moving it to a self-custody wallet where only you control the private keys.
Other terms in Wallets & Security
Address Poisoning
A wallet scam where attackers plant lookalike addresses in your transaction history so you might copy the wrong recipient later.
Approval Phishing
A scam that tricks users into granting a malicious wallet or smart contract permission to spend tokens from their wallet.
BIP-39
A standard for turning wallet backup data into a human-readable seed phrase, usually 12 or 24 words.
Crypto Wallet
A tool that stores and manages the private keys needed to access and use cryptocurrency on a blockchain.