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News Details View All News Circle Launches Arc Mainnet , an Economic Operating System for the Internet September 16 , 2026 Secured by the institutions that run the world's financial infrastructure , Arc goes live with more than 100 institutional and ecosystem builders on day one , offering a new era in blockchain networks , and built for the Agentic Economic Era NEW YORK -- ( BUSINESS WIRE ) -- Circle Internet Group , Inc. ( NYSE : CRCL ) , one of the world's leading internet financial platform companies , today announced the public mainnet launch of Arc , an open Layer 1 blockchain purpose - built for financial markets , real - time money movement , and agentic economic activity . Arc launches with native integration into Circle's full - stack platform ( including USDC , the world's largest regulated digital dollar , with more than $ 74 billion in circulation ) ; a founding validator cohort drawn from the institutions that run global finance ; more than 100 applications ; and more than 100 institutional and ecosystem builders spanning global banks , asset managers , payment networks , exchanges , custodians , DeFi protocols , wallets , and Al platforms live on day one . " Arc is the single most significant launch in Circle's history since USDC itself , and it is the embodiment of the premise we have operated on for thirteen years : money should work the way the internet works , " said Jeremy Allaire , Co - Founder , Chairman , and CEO of Circle . " USDC was step one . Arc is the network built for what comes next . The agentic economy and the onchain economy are not two different revolutions ; they are the same economy seen from two sides , and both need infrastructure that never closes , settles in under a second , and is trusted by the institutions that anchor the global financial system . Today we are switching on something the world has never had before : an open , neutral , always- on economic operating system for the internet , secured by some of the most important financial institutions on Earth , and built for a world where both people and machines transact . " AN ECONOMIC OPERATING SYSTEM , NOT JUST A BLOCKCHAIN Six design choices set Arc apart and power onchain finance across payments , FX , trading , lending , markets , and asset issuance : 1. Gas in dollars . Fees are paid in USDC , with no volatile native token required . 2. Sub - second finality . Deterministic , instant settlement . Final means final . 3. Opt - in privacy . Confidential transactions and balances with view keys ; in development for network- wide release . 4. Issuers and interoperability . A home for USDC , EURC , and tokenized real - world assets , with Circle StableFX providing 24/7 cross - currency settlement . 5. Agentic economic activity . The first blockchain designed from genesis for Al agents as economic actors . 6. Institutional security . Post - quantum signatures supported today and deterministic consensus built to financial market standards . Money without borders . Circle StableFX , enables 24/7 programmable FX trading with near - instant , low - cost settlement . Local stablecoins that are active or onboarding to StableFX include : USDC , EURC , AUDD , AUDF , BRLA , CADD , CHFAU , EURAU , GBPA , JPYC , KRW1 , MXNB , QCAD , SEKAU , TRYB , WARS , WBRL , WCLP , WCOP , WMXN , WPEN , and ZARU . And now Circle Payments Network is