USD COIN
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USD Coin (USDC) is "an open source, smart contract-based stablecoin," according to the website for Centre, an open-source project launched by Circle and Coinbase. USDC, which is billed as the world's second-largest stablecoin, was released in September of 2018. In March of 2021, Visa said it would allow USDC to be used to settle transactions on its payment network.