Circle Launches Arc: The Institutional Layer 1 Blockchain for the AI Agent Economy

Circle has launched Arc, an open Layer 1 blockchain designed specifically for institutional financial markets and the burgeoning agentic economy. By integrating native USDC for gas fees and securing a validator cohort of global financial giants, the network aims to bridge the gap between traditional finance and real-time, onchain settlement.

What was announced

The public mainnet launch of Arc marks the introduction of a blockchain purpose-built for financial markets and "agentic" economic activity - where AI agents act as economic participants. The network launches with native integration into Circle’s full-stack platform, including USDC, which currently has more than $74 billion in circulation. Arc is fully EVM-compatible, allowing existing Solidity contracts to function immediately, and features a developer ecosystem of over 75,000 Arc House members and 10,000 Architect ambassadors who have already built more than 1,200 projects.

Arc is defined by six core design choices intended to remove friction from institutional finance. Most notably, gas fees are paid in USDC, removing the need for a volatile native network token. The system offers sub-second deterministic finality and is developing network-wide opt-in privacy using view keys for confidential transactions. It also supports post-quantum signatures and deterministic consensus. For cross-currency settlement, the network utilizes Circle StableFX to provide 24/7 liquidity between USDC, EURC, and other tokenized assets.

The network is secured by a founding validator cohort that includes BlackRock, The Depository Trust & Clearing Corporation (DTCC), Galaxy, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation, Visa, and Worldpay (now Global Payments). On day one, more than 100 applications and 100 institutional builders are live on the network, including DeFi protocols like Aave and Morpho. Prior to this public launch, the Arc testnet processed more than 700 million transactions in less than a year.

"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. 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."

Jeremy Allaire, Co-Founder, Chairman, and CEO of Circle.

The companies involved

Circle is a leading internet financial platform company, best known as the issuer of USDC and EURC. The firm has been a central fixture in the digital asset space for over a decade, with FF News featuring the company in 79 previous reports. Joining Circle as a founding validator is BlackRock, the world’s largest asset manager, which has been the subject of 62 FF News stories as it increasingly integrates digital asset infrastructure into its global strategy. Mastercard, a global payments giant with a massive footprint in 960 FF News reports, also joins the validator cohort, signaling a deep commitment to onchain rails.

Other key participants include SBI Group, a Japanese financial services powerhouse that has previously collaborated with Circle to distribute USDC through SBI VC Trade. Institutional heavyweights such as ICE and the DTCC provide the regulatory and market infrastructure expertise necessary for institutional adoption. The ecosystem is further supported by decentralized finance leaders, including Aave Labs, founded by Stani Kulechov, and Morpho, co-founded by Merlin Egalite, both of which are deploying credit and lending infrastructure directly onto the Arc network.

What FF News has reported before

FF News has closely tracked the rise of automated financial actors, recently reporting on how Elliptic Launches Global Standard to Combat Agentic On-Chain Risk in AI-Driven Finance as agentic payments surged. Our coverage of Mastercard has been extensive, including their regional expansions such as when Mastercard Names Sidney Massunaga as Country Manager to Lead Mexico Strategy. We have also followed their social impact and infrastructure initiatives, including how Bank Audi and Mastercard to Support 10,000 Lebanese Entrepreneurs via neo Business and their efforts where Mastercard and Banque du Liban Partner to Drive Digital Payment Acceptance in Lebanon. This history of reporting highlights a clear trend of traditional payment networks moving toward programmable, digital-first financial systems.

What this means

The launch of Arc represents a fundamental shift in how Layer 1 blockchains compete for institutional capital. By removing the "gas token" friction - where users must hold a volatile asset like ETH or SOL to transact - Circle is directly addressing the primary UX hurdle for corporate treasuries. The inclusion of the DTCC and ICE as validators is a significant move that places the security of a public network in the hands of the very entities that currently clear the world’s traditional securities. This puts immense pressure on existing "enterprise" blockchains that lack the liquidity of USDC or the broad institutional backing seen here. The focus on AI agents also suggests the industry is moving beyond human-centric UI toward a machine-to-machine economy, raising urgent questions about how existing KYC and AML frameworks will adapt to non-human economic actors.