Circle, the American stablecoin issuer, is making waves in the cryptocurrency world by announcing its plans to build its own blockchain. This new blockchain, named Arc, is not a rollup like many other layer-2 solutions, but a layer-1 blockchain. The decision to create a new blockchain showcases Circle’s belief that having full control over the path between a dollar and a smart contract is crucial for their future success in the payments industry.
Arc will be Ethereum-compatible, utilizing USDC for gas and offering sub-second deterministic finality. This move has sparked debate within the Ethereum community about whether Arc will divert stablecoin activity away from Ethereum or simply act as a bridge to the broader Ethereum ecosystem. Some argue that Arc’s launch signifies a return to enterprise chains, while others see it as a strategic move for a dollar-native payments platform.
The choice to build a new sovereign chain rather than utilizing a modular layer-2 solution has ignited discussions about the impact on Ethereum’s role as the settlement layer for stablecoins. Some believe that Arc’s cross-chain interoperability will strengthen Ethereum’s network effects, while others fear that it may divert developer attention and reduce Ethereum’s value proposition.
The technical design of Arc remains under wraps, but it is known that the blockchain will be built on Malachite, a high-performance BFT consensus engine developed by Informal Systems. Circle has hired the core team behind Malachite, emphasizing their commitment to vertical integration and control over their technology stack. This decision has drawn both praise and skepticism from the crypto community, with some applauding Circle’s focus on predictability and others questioning the impact on Ethereum’s ecosystem.
As the stablecoin market continues to grow rapidly, with stablecoin payments on the rise, companies like Circle are racing to establish their own sovereign rails for payment processing. The potential revenue from owning the settlement layer is seen as a lucrative opportunity, prompting companies to explore building their own blockchain solutions. The debate between layer-1 and layer-2 solutions revolves around the trade-off between control and time-to-market, with each option offering unique benefits and challenges.
Despite the launch of Arc, Ethereum remains a cornerstone of the cryptocurrency industry, with many believing in its long-term viability and importance. Circle will need to navigate the evolving landscape of blockchain technology while balancing their commitment to Ethereum and their pursuit of building a competitive payments infrastructure. The future of Arc and its impact on the broader crypto ecosystem remains to be seen, but one thing is certain: the race to revolutionize payments is just getting started. The influence of the USDC issuer over Ethereum’s direction has been a topic of concern in the past. However, with the rise of competing stablecoin issuers, these concerns have been quieted, according to Buchman.
He believes that Ethereum’s evolution is key and that the platform does not necessarily rely on all compute happening within its ecosystem. This perspective overlooks Ethereum’s fundamental role over the next century.
Despite the proliferation of stablecoin issuers, Ethereum remains a central hub for stablecoin flows. While issuance and FX trading may shift to Arc, the application layer still prefers to operate where liquidity is strongest.
One potential worry is whether Arc’s USDC-native design opens up new possibilities for censorship or exclusion, especially in sanctioned regions. If USDC serves as both an asset and gas, what happens if the token is frozen?
Buchman acknowledges that fallback mechanisms are feasible but emphasizes that Arc should at least meet the standards of the current banking system. While Arc may not offer the same level of freedom and human rights protection as Ethereum and Bitcoin, Circle aims to support an open economy.
Privacy and regulatory concerns at the system level remain unresolved, with Circle addressing them only superficially. Buchman mentions that they pushed Circle on the issue of privacy during discussions.
As Circle continues to develop Arc, questions surrounding privacy and regulatory compliance will need to be addressed more comprehensively. Despite these challenges, Circle’s commitment to an open economy suggests a willingness to navigate these complexities.

