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A exchange, or a digital (DCE), is a that allows customers to cryptocurrencies or digital currencies for other assets, such as conventional or other digital currencies. Exchanges may accept card payments, wire transfers or other forms of payment in exchange for digital currencies or cryptocurrencies. A cryptocurrency exchange can be a maker that typically takes the bid–ask spreads as a commission for is service or, as a matching platform, simply charges fees.

Some brokerages which also focus on other assets such as stocks, like Robinhood and eToro, let users purchase but not withdraw cryptocurrencies to cryptocurrency wallets. Dedicated cryptocurrency exchanges such as and do allow cryptocurrency withdrawals, however.