Circle Internet Group has announced plans to launch Arc, a proprietary layer 1 blockchain designed specifically for stablecoin-based finance. The most notable feature of the new network is that USDC will serve as the native gas token, positioning Arc as a purpose-built chain where a major dollar-backed stablecoin sits at the center of network activity rather than being just another asset deployed on top of an existing blockchain.
The announcement came alongside Circle’s second-quarter earnings update, tying the Arc reveal to the continued expansion of USDC. According to the company, USDC in circulation rose 90% year over year to $61.3 billion at the end of the quarter, and then increased a further 6.4% to $65.2 billion as of Aug. 10, 2025. The report also noted that USDC is currently the second-largest fiat-backed crypto asset by market capitalization, with a market value of about $65.23 billion.
A Layer 1 Built for Stablecoin Finance
Circle described Arc as an open, EVM-compatible Layer 1 blockchain purpose-built for what it calls “stablecoin finance.” Rather than presenting the network as a general-purpose chain competing across every vertical, the company framed Arc as infrastructure tailored to real-world financial use cases where stable digital dollars already play an important role.
In Circle’s description, Arc is intended to provide an enterprise-grade foundation for stablecoin payments, foreign exchange, and capital markets applications. That framing suggests the chain is being designed with institutional and commercial use in mind, especially in areas where settlement speed, interoperability, and predictable transaction costs matter.
The use of USDC as native gas is central to that strategy. In most blockchain environments, transaction fees are paid in a separate network token, creating additional friction for users who may already be transacting in stablecoins. By making USDC itself the fuel for transactions, Circle appears to be aiming for a more direct and finance-oriented user experience, particularly for payment flows and onchain financial operations where participants may prefer to stay in dollar-denominated assets throughout the lifecycle of a transaction.
Core Features Highlight Settlement and Control
Circle said Arc will include several features meant to support financial-grade activity. These include an integrated stablecoin FX engine, sub-second settlement finality, and opt-in privacy controls. Taken together, those capabilities indicate that Arc is being positioned not merely as a payments chain, but as a broader financial rail for businesses and institutions.
The integrated FX functionality is especially notable because it points toward a built-in framework for moving between stablecoin-denominated assets or currencies in a more seamless way. For companies focused on cross-border commerce and treasury operations, foreign exchange remains one of the largest sources of friction and cost. Circle’s messaging suggests Arc may be developed to reduce that friction within a blockchain-native environment.
Meanwhile, the promise of sub-second finality speaks directly to one of the most important demands in financial infrastructure: rapid and reliable settlement. In payment and capital market contexts, finality is often more significant than raw transaction throughput because businesses need confidence that transfers are complete and irreversible within a tight time window.
The mention of opt-in privacy controls adds another layer to Arc’s institutional ambitions. Privacy remains a sensitive topic in blockchain design, especially for enterprises that want operational confidentiality without giving up the benefits of a transparent and interoperable ledger. Circle did not provide technical specifics in the announcement, but its inclusion of privacy controls shows an awareness of the tension between compliance, transparency, and business confidentiality.
Circle Expands Beyond Stablecoin Issuance
The Arc announcement marks a strategic shift in how Circle is positioning itself in the broader crypto stack. Historically, the company has been most closely associated with USDC, one of the largest and most widely used regulated stablecoins in the market. But with Arc, Circle is moving further into blockchain infrastructure, seeking to build a more complete platform around issuance, settlement, and network-level financial services.
Circle explicitly described Arc as a “defining moment” in its effort to deliver a full-stack platform for the internet financial system. That language is significant. It implies that the company no longer wants to be viewed only as a stablecoin issuer whose product circulates across third-party chains. Instead, it is building the rails on which that stablecoin can become the native medium for fees, payments, and potentially a wider range of financial applications.
This approach could strengthen Circle’s influence over the environments in which USDC is used while also allowing it to optimize network design around the specific needs of stablecoin-driven markets. At the same time, the company said Arc will remain fully compatible and interoperable with the dozens of partner blockchains that Circle already supports, suggesting that the new chain is not intended to isolate USDC from the wider ecosystem.
L1 Competition Is Getting Crowded
Circle’s move also reflects a broader trend: major crypto and fintech companies are increasingly building their own blockchain networks. The competitive field already includes Kraken’s Ink, Coinbase’s Base, and Binance’s BNB Chain. Beyond crypto-native firms, Robinhood is working on a layer 2 network, and Stripe has also disclosed plans for a layer 1 chain.
What stands out in Circle’s case is its decision to launch an L1 rather than an L2, a route that differs from some competitors that have favored scaling atop existing ecosystems. The layer 1 path gives Circle more control over network architecture, fee mechanics, and execution environment. For a company focused on stablecoin utility and financial settlement, that control may be a major advantage, particularly if it wants to tune the blockchain around compliance-aware, low-friction enterprise use cases.
Still, entering the L1 arena is not a trivial undertaking. Layer 1 networks must attract developers, liquidity, validators or equivalent infrastructure participants, and a pipeline of applications that justify usage. In Arc’s case, Circle may hope that USDC’s scale and existing integrations can serve as a launchpad. The stablecoin already operates across many chains and is deeply embedded in exchange infrastructure, DeFi, and payments, giving Circle an existing distribution network that many new chains lack.
Public Testnet Planned for the Fall
Circle said that Arc is expected to debut in a public testnet this fall. That timeline indicates the project is moving from concept toward implementation, although much remains unknown at this stage, including validator design, tokenomics beyond gas usage, governance structure, and the exact technical model for interoperability and privacy features.
Even so, the announcement is meaningful because it shows where Circle believes the next phase of stablecoin infrastructure is heading. Rather than relying entirely on third-party chains to host dollar-backed liquidity, the company is betting that a blockchain built expressly for stablecoin finance can better support payments, FX, and capital markets workflows at scale.
If Arc succeeds, it could become one of the clearest examples of a blockchain designed around the practical use of stable digital dollars rather than speculative native-token economics. For Circle, that would represent more than a product expansion. It would mark a deeper transition from being a major issuer within the crypto ecosystem to becoming a direct builder of the financial rails that may underpin the internet-native economy.