# Proto-USD

<figure><img src="/files/KEbty9AtJ592TcOYz9DD" alt=""><figcaption></figcaption></figure>

Proto-USD is a cross-chain protocol that enhances and extends the capabilities of Circle’s [Cross-Chain Transfer Protocol](https://www.circle.com/en/cross-chain-transfer-protocol) (CCTP). It allows blockchains without native CCTP support to seamlessly transfer USDC across networks, unifying liquidity and simplifying the user experience by enabling cross-chain transfers from any Proto-USD-enabled blockchain.


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