Blockchain & Infrastructure Also: crypto wallet, web3 wallet

Wallet

Software or hardware that stores private keys and signs blockchain transactions on behalf of the user.

A crypto wallet stores the private keys needed to access and control blockchain addresses. Wallets don't hold currency directly — assets exist on the blockchain; the wallet stores the keys that prove control. Hot wallets (MetaMask, Phantom) are software-based and internet-connected; cold wallets (Ledger, Trezor) keep keys offline. Browser extension wallets are the primary interface for interacting with DeFi and NFT applications.

Related Terms

Private Key A secret cryptographic number that proves ownership of a... Seed Phrase A human-readable list of 12–24 words that encodes a... Hot Wallet A cryptocurrency wallet connected to the internet,... Cold Wallet A cryptocurrency wallet that stores private keys... Address A unique alphanumeric identifier used to send and...

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