The Layer 1 runs on proof of authority with eleven named institutions producing blocks, and network fees are paid in USDC rather than a native token. Circle minted 10 billion ARC at genesis and says that is not a commitment to a public token.
Circle opened its Arc blockchain to the public on Wednesday with a closed list of block producers rather than an open validator set. In its launch announcement the company named BlackRock, DTCC, Galaxy, Global Payments, ICE, Mastercard, MoneyGram, SBI Group, Standard Chartered, Sumitomo Corporation and Visa as the eleven founding validators, the same roster it published six weeks earlier when it fixed September 16 as the launch date.
Arc is EVM-compatible and runs on proof of authority, which means the right to produce blocks belongs to that named set rather than to anyone willing to stake capital. Circle says it is exploring a transition to proof of stake in 2027. Network fees are payable in USDC, so using the chain does not require holding a separate volatile asset, and The Block reported that the eleven validators join in phases rather than all at once.
Circle also completed a genesis mint of 10 billion ARC in the United States this week, describing the token as a "digital commodity intended to act as the native coordination mechanism for security, utility, and governance." The Block also reported Circle's position that the mint is a technical step rather than a commitment to a public token launch. ARC does not pay for gas, and no distribution schedule has been published. The security role Circle describes for it would begin with the move to proof of stake that the company has so far only said it is exploring.
The application side of the launch comes entirely from Circle's own account. The company says more than 100 applications were live on day one, including Aave, Morpho and Uniswap, and that more than 1,200 projects built on Arc during its testnet phase. Aave's founder, Stani Kulechov, is quoted in the release saying the protocol is doubling down on Circle's ecosystem; last month he proposed adding a tokenized high-yield credit fund from a $230 billion asset manager as collateral in Aave's Horizon market.
Jeremy Allaire, Circle's co-founder, chairman and chief executive, called Arc "the single most significant launch in Circle's history since USDC itself." That establishes how the company is positioning the network, not how much of the institutional business behind the validator names will actually route through it.
The roster is what separates this from other chain launches. DTCC is the clearing utility that settles US securities trades, ICE owns the New York Stock Exchange, and Visa and Mastercard run the two largest card networks. The commitments behind those names are staged well past launch day. Circle said in August that BlackRock's BUIDL fund is expected to deploy on Arc, and that its work with DTCC to tokenize DTC-custodied assets begins in the second half of 2027. Sitting in a founding validator cohort is not the same as moving volume across the chain.
Visa's presence fits a search it has been running in public. The card network circulated a request for proposals for a new stablecoin settlement and over-the-counter partner after Mastercard closed its $1.8 billion acquisition of BVNK on August 3. The other large institutional stablecoin effort of the past three weeks went the opposite way. A consortium of 21 banks and asset managers committed on September 1 to issue a dollar token without naming a chain, a custodian, a governance structure or redemption terms.
Circle's own release is heavily qualified. It states that all Arc features may be modified, delayed or canceled at any time without notice, and lists smart contract vulnerabilities, network disruption and regulatory uncertainty among the risks. The regulatory part is not abstract this week. Circle's description of ARC as a digital commodity points at a category US law still has not settled, and the CLARITY Act, which would have given digital assets their first comprehensive federal framework, fell eleven votes short of opening Senate debate on Tuesday.
Circle's claims about the network itself, including sub-second settlement, post-quantum signature support and the day-one application count, rest on its own announcement, and no independent measurement of them was available at launch. What the company has put on the record is narrower: eleven named block producers, fees denominated in USDC, and a proof-of-stake transition described only as under exploration for 2027.
