A cryptocurrency wallet is a device,[1] physical medium,[2] program or a service which stores the public and/or private keys and can be used to track ownership, receive or spend cryptocurrencies.[3]The cryptocurrency itself is not in the wallet. In case of bitcoin and cryptocurrencies derived from it, the cryptocurrency is decentrally stored and maintained in a publicly available ledger called the blockchain.[3]
Wallets can either be digital apps or be hardware based.[5] They either store the private key with the user, or the private key is stored remotely and transactions are authorized by a third party.
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