Circle launched Arc mainnet September 16, 2026 — an EVM-compatible L1 for stablecoin payments and financial markets, particularly agentic transactions. USDC is native gas; deterministic sub-second finality.
Supports 20+ fiat stablecoins (USDC, EURC, JPYC, KRW1, TRYB) and tokenized assets including BlackRock BUIDL and Circle USYC. Interoperability with 20+ blockchains via CCTP and Gateway.
Founding validators: BlackRock, DTCC, Galaxy, Global Payments, ICE, Mastercard, MoneyGram, SBI, Standard Chartered, Sumitomo, Visa. Chain ID 5042.
No public ARC token has launched; counterfeit versions circulating per Stablecoin Insider reporting.