- Institutional rails. Circle’s Arc is not a general-purpose public chain — it is purpose-built for institutional financial markets, with USDC as the gas currency, sub-second settlement, and eleven of its founding validators drawn from Wall Street and global payments infrastructure.
- Layer one, not layer two. Arc is a standalone Layer 1 blockchain (EVM-compatible, transitioning from proof-of-authority to proof-of-stake in 2027), placing Circle in direct competition with Ethereum and other settlement-layer networks for the institutional tokenization market.
- Scale signal. The testnet processed more than 700 million transactions in less than a year before launch; the mainnet opened with more than 100 applications live on day one, including Aave V4, Uniswap, and Morpho.
Circle Internet Group opened the Arc public blockchain mainnet on September 16, 2026, with over 100 decentralised applications available from launch. Arc is a Layer 1 blockchain purpose-built for financial markets and agentic economic activity, with transaction fees denominated exclusively in USDC, sub-second finality, and post-quantum signature support already enabled at launch.
Jeremy Allaire, Circle’s chief executive, described the launch as “the single most significant event in Circle’s history since USDC itself,” citing Arc’s ambition to make “money work the way the internet works.” The chain’s testnet had processed more than 700 million transactions before the mainnet went live, an unusually robust record for a network that had not yet opened to the public.
Founding Validators
Circle named eleven founding validators in August, with BlackRock, DTCC, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation, Visa, Worldpay, and Galaxy joining the set in phases. Michael Blaugrund, ICE vice president of strategic initiatives, said Arc’s “predictable fees and instant finality address real friction points” that institutional customers had repeatedly raised.
The combination of BlackRock and DTCC as validators is significant: BlackRock already has tokenized assets on Arc through its BUIDL fund, and DTCC — the US settlement infrastructure — has agreed with Circle to enable tokenization of DTC-custodied assets on Arc beginning in the second half of 2027. That pipeline, if it proceeds, would connect the dominant US securities settlement system to a blockchain network for the first time at an institutional scale.
Arc Token and Regulatory Context
Circle completed the genesis mint of 10 billion ARC tokens at launch, though the company clarified this represents a technical milestone rather than a commitment to a public token offering. ARC will serve governance, security, and network coordination functions; USDC remains the fee currency for all transactions.
The launch arrives at a delicate moment for US crypto regulation. As covered when Nasdaq backed Kraken’s tokenized stock platform, the institutional appetite for regulated blockchain infrastructure is outrunning Washington’s rulemaking, with the Clarity Act’s failure having shifted crypto regulatory authority toward case-by-case SEC and CFTC rulemaking. Arc’s USDC-native design and Wall Street validator set appear calculated to position the network inside whatever regulatory framework ultimately emerges, rather than challenging it from outside.
Arc also debuts with StableFX, a round-the-clock foreign exchange facility supporting USDC, EURC, GBPA, JPYC, and KRW1, and a roadmap targeting more than 100,000 transactions per second in a dedicated payments environment.