Arc is an open Layer-1 blockchain purpose-built for stablecoin finance, developed by Circle Internet Group (NYSE: CRCL), the company behind USDC. Launched in August 2025, Arc features USDC as native gas, deterministic sub-second finality, opt-in privacy controls, and direct integration with Circle's full-stack platform including USDC, CCTP, and Gateway. The blockchain is designed for enterprise-grade stablecoin use cases including payments, FX, capital markets, lending, and treasury management. Testnet launched in October 2025 with over 100 design partners including Visa, Goldman Sachs, Mastercard, BlackRock, HSBC, and Visa.
The project positions itself as the "Economic OS for the internet" - a settlement foundation for core financial workflows while enabling interoperability with major ecosystems like Ethereum and Solana. With 100+ institutional partners testing the network, Arc aims to unify programmable money with real-world economic activity. Mainnet launch is targeted for 2026