According to official sources, Circle has released the Circle Gateway testnet, supporting Avalanche, Base, and the Ethereum mainnet, providing users with the ability to access $USDC across chains in seconds. The mainnet version is coming soon and will continue to expand to more blockchains. Key highlights include: 1. <500ms cross-chain access: No cross-chain bridge required, no pre-set assets required, quickly call unified $USDC balance; 2. Efficient liquidity management: Meet multi-chain liquidity needs through a single integration, reducing capital occupation; 3. Non-custodial design: Users have complete control over $USDC, funds can only be moved under signature authorization, and withdrawals do not require trusting a third party. [Odaily]