In short
- Arc is a blockchain built by USDC issuing Circle for direct use in stablecoins.
- It uses USDC for transactions, has a built-in FX engine, and supports private encryption.
- Mainnet beta is expected to be launched in 2026, including the ARC token has been announced.
Circle, the company behind the USDC stablecoin, pa he started the new one blockchain a tower called the Arc. Unlike blockchains like Ethereum or SolanaArc is a layer-1 network designed specifically to support stablecoin applications.
Stablecoins are tokens whose value is linked to fiat currencies such as the dollar. Arc is Circle’s effort to overcome the operational issues that hinder the adoption of stablecoins at the institutional level.
“We’ve helped businesses and developers use USDC across multiple networks,” Rachel Mayer, VP of Product Management at Circle, said. Decrypt. “The default answer has been: make price predictability, end-to-end authentication, and privacy consistent with real-world trends.”
This article will explain what Arc is, how it works, and what Circle says sets it apart from other blockchain platforms.
Why did the Circle build the Arc?
Although part of the crypto market for many years, stablecoins like USDT and USDC have seen increased interest in the establishment after the crossing GENIUS Actwhich President Donald Trump signed into law in July 2025.
However, Circle notes that most existing blockchains are not designed to support stablecoins. Restrictions that Circle says include:
- 🎢 Price volatility
- ⛓️ Potential stability at risk of chain renewal
- 🕵️ Lack of privacy controls for privacy products
- 💧 Distribution of liquid in several chains
Circle said that Arc will solve these problems by providing long-term stability and immutability (called deterministic finality), predictable low-cost stablecoins, optional privacy features that facilitate compliance, and integration with other blockchains and traditional financial systems.
Arc’s public testnet was launched in October 2025and the mainnet beta release is expected sometime in 2026.
USDC as natural gas
By using USDCa digital currency that is backed by real assets, Circle aims to eliminate the need for digital tokens to pay for transactions. The network can also support other stablecoins like gas through the paymaster system.
According to Circle, the Arc payment model builds on Ethereum EIP-1559 structure but instead of block-level changes and dynamic quantities required for the network. This smooth process keeps costs low and predictable. Payments are made in USDC and go to the on-chain Arc Treasury.
“Arc’s speed and natural gas and Circle’s CCTP and Gateway interoperability service-as-stablecoin liquidity hub, enable USDC to move freely to the blockchain ecosystem,” said Mayer. “So developers and users can stay on the network that best suits their needs while still maintaining Arc’s stablecoin-optimized rails.”
This structure allows for a more cost-effective, scalable, and sustainable investment model, which Circle said is more suitable for financial institutions than speculative models.
Sustainable development is a partnership
Arc’s consensus layer is powered by Malachite, a Byzantine Fault Tolerant (BFT) engine based on Tendermint. Selection of guarantors is now voluntary and based on operational strength, geographic distribution, and regulatory compliance. Plans include changes to “allowances” Proof-of-Money machine, according to Circle.
In order to reduce the possibility of abuse, Circle is developing tools as stealth mempoolsbatch transaction processing, and crowdsourcing, are all aimed at ensuring that financial transactions are conducted fairly.
The price of ARC shares
Circle published it Arc white paper in May 2026, explaining the role of the ARC token as a “coordination mechanism” of the Arc network as it transforms into a proof of mutual agreement.
Under this model, a group of “authorized” users create blocks and maintain the network, with rewards from inflation-funds and fees paid that are converted into ARC.
With the Arc network designed as a “complete platform that will grow over time,” the ARC service will also grow as “new capabilities emerge” in each part of the stack, including software, building tools such as SDKs, and protocols.
ARC holders can receive “low cost” and “custom access” from natural partners including Circle’s crosschain transfer and stablecoin minting services.
The initial supply of ARC tokens will be 10 billion, with the release of new tokens expected to start at an annual rate of 2-3%. The long-term goal is “inflation neutrality,” according to the white paper, and the exact time frame depends on the growth of the internet.
Of the ARC’s initial contribution, 60% is allocated to the environment, providing funding for developers, token sales and other collaboration methods. 25% is given to Circle, while 15% will go to long-term storage, to act as a safeguard against “unforeseen events.”
Corporate login secrets
Arc includes a privacy policy designed to accommodate privacy. The first feature, private transfers, protects the volume of transactions when addresses are exposed. Smart contracts communicate with the cryptographic backend via precompiles, using Trusted Execution Environments (TEEs) for cryptographic calculations.
Organizations can disclose information to regulators or auditors through key disclosures. Over time, Arc plans to support:
- Private and public accounting
- Evidence without knowledge (ZKPs)
- Multi-component calculation (MPC)
- Fully homomorphic encryption (FHE)
Circle tools connect fiat and USDC through Arc and other blockchains: Mint converts fiat to USDC on Arc, CCTP transfers USDC by burning and reminding it off-chain, and Gateway offers chain-agnostic USDC tokens that also connect to built-in wallets and apps.
“Arc strengthens the ecosystem by opening up new use cases, partners, and business ventures,” said Mayer. “Developers and users can live on a network that fits their needs while still maintaining Arc’s stablecoin-optimized rails.”
Investing in the blockchain ecosystem
Arc enters a competitive space that includes Layer-1 blockchains such as Bitcoin, Ethereum, and Solana, stablecoin-like blockchains. Plasma and FrontierLayer-2 networks such as Arbitrum and Base, are private or public networks used by payment companies.
Circle’s differentiator is its position in the market as an issuer of USDC, one of the major stablecoins.
By building an autonomous chain of scalable financial services, Arc aims to expand the use of stablecoins beyond real-time payments, tokenization, and social capital.
In May 2026, Circle announced the $222 million token preset for ARC, the brand achieves a total valuation of $3 billion. The raise was led by VC firm Andreessen Horowitz with a $75 million investment, with other participants including BlackRock and Apollo Funds.
By building an autonomous chain of scalable financial services, Arc aims to expand the use of stablecoins beyond real-time payments, tokenization, and social capital.
“Clarification of the law often helps institutionalization,” Mayer said, adding that Arc was designed to be “business oriented.”
Editor’s note: This article was first published on September 20, 2025 and was last updated on May 17, 2026.
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