Uniswap, the decentralized exchange, has partnered up with fintech company Moonpay to let users in the U.S., Brazil, the UK and SEPA (Single Euro Payments Area) areas buy cryptocurrencies on its web app with debit cards, credit cards or bank transfers. What Happened: Uniswap said on Tuesday that users may be able to convert fiat to crypto on Ethereum (CRYPTO: ETH) mainnet, Polygon (CRYPTO: MATIC), Optimism (CRYPTO: OP), and Artibrum within minutes.