Overview

• Gateway went live on Aug. 19 on mainnet, initially connecting Arbitrum, Avalanche, Base, Ethereum, OP Mainnet, Polygon PoS, and Unichain.
• Circle says cross-chain transfers present as a single-chain experience with balances accessible in under 500 milliseconds.
• The design pairs smart contracts with an off-chain attestation service, using burn intents and a Gateway Minter to mint on destination networks.
• Assets remain under depositor control with required user signatures plus Gateway attestations and a trustless seven-day recovery path if the API is unavailable.
• Circle plans support for additional networks, explicitly including its Arc layer-1, and positions Gateway for exchanges, payment processors, custodians, wallets, and DeFi firms.