What Is a Crypto Wallet?
Learn what crypto wallets store, how transactions are authorized, and how custody choices differ.
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What to remember
- A wallet manages keys, not the assets themselves — those stay recorded on the blockchain.
- Addresses, public keys, and private keys are related but distinct; only the private key must stay secret.
- Custodial wallets trade direct control for convenience; self-custody trades convenience for direct responsibility.
- No legitimate support process ever needs your seed phrase — treat any request for it as an attempted theft.
A wallet manages access
A crypto wallet is software or hardware that manages the keys needed to interact with blockchain assets. The assets remain recorded on the relevant blockchain. The wallet reads those records and helps the user create signed transactions.
Addresses, public keys, and private keys
An address is a shareable destination for receiving assets and is derived from cryptographic information. A public key can be shared for verification, while a private key must remain secret because it authorizes spending. These terms are related, but they are not interchangeable.
Custodial and self-custodial wallets
In a custodial arrangement, a service controls the private keys and provides an account interface. In self-custody, the user controls the keys directly. Self-custody provides direct control but also makes backup, device security, and transaction review the user's responsibility.
Software and hardware wallets
Software wallets run on phones, computers, or browsers and are convenient for frequent use. Hardware wallets keep key operations on a dedicated device and can reduce exposure to some online threats. Neither type removes the need to verify addresses and protect recovery information.
The most important safety rule
Never share a private key or seed phrase with anyone, including someone claiming to provide support. Treat unexpected signing requests, copied addresses, and recovery prompts as security-sensitive events. A wallet can help manage keys, but it cannot reverse a valid transaction sent to the wrong destination.
"Support" will never ask for your seed phrase
No legitimate wallet provider, exchange, or support agent needs your seed phrase to help you — they can see wallet addresses without it. Anyone asking for it, in any context, is attempting to take control of your funds, not fix a problem.
What to remember
- A wallet manages keys, not the assets themselves — those stay recorded on the blockchain.
- Addresses, public keys, and private keys are related but distinct; only the private key must stay secret.
- Custodial wallets trade direct control for convenience; self-custody trades convenience for direct responsibility.
- No legitimate support process ever needs your seed phrase — treat any request for it as an attempted theft.
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Related concepts
Custodial vs. Non-Custodial Wallets
Read the comparison
Multi-Signature Wallet
Read the Multi-Signature Wallet glossary definition
Wallet Address
Read the Wallet Address glossary definition
Derivation Path
Read the Derivation Path glossary definition
Wallet
Read the Wallet glossary definition
Private Key
Read the Private Key glossary definition
Seed Phrase
Read the Seed Phrase glossary definition
Public Key
Read the Public Key glossary definition
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