Circle Gateway, now live on mainnet, offers a streamlined solution for accessing instant crosschain USDC liquidity, addressing the complexities of managing stablecoin liquidity across multiple chains for businesses like onramps, PSPs, exchanges, and custodians. By integrating smart contract infrastructure with an offchain attestation service, Gateway enables a unified USDC balance accessible in under 500 milliseconds, enhancing capital efficiency and utility as a crosschain asset. This service is currently available on chains including Arbitrum, Avalanche, and Ethereum, with plans for expansion. The system ensures security and simplicity by retaining user control over funds through non-custodial smart contracts and facilitating next-block speed transactions via a single integration interface. As part of its design principles, Gateway aims to eliminate liquidity fragmentation and user experience friction in a multichain environment, ultimately transforming crosschain transactions into a seamless, single-chain-like experience.