Circle has launched the public mainnet for Arc, its new Layer 1 blockchain designed for financial markets, payments, and AI-powered economic activities. According to the firm’s official announcement, the network debuts with more than 100 institutional and ecosystem participants.
A distinctive feature of Arc is the integration of USDC as its primary gas token. This allows users to pay for transaction fees directly with Circle’s stablecoin. The network is engineered to provide sub-second finality and supports assets including USDC, EURC, and tokenized real-world assets.
Founding validators for Arc comprise a mix of traditional financial institutions and prominent cryptocurrency firms. Traditional finance participants include BlackRock, Mastercard, Visa, Standard Chartered, Galaxy, ICE, DTCC, and MoneyGram. Key crypto firms acting as founding validators are Binance, Coinbase, Kraken, Bybit, Aave, Morpho, Uniswap, and MetaMask.
Circle has minted the initial supply of 10 billion ARC tokens, intended for future network security, utility, and governance. The company has stated that Arc may explore a transition from its current Proof of Authority consensus mechanism to Proof of Stake, potentially in 2027. This potential transition is described as an exploration, not a reported event.
The launch of Arc represents Circle’s strategic expansion into blockchain infrastructure, specifically targeting the financial services sector. The use of USDC as the gas token could offer greater predictability for transaction fees compared to networks where gas fees fluctuate based on native token prices. While the network launches with substantial backing, its long-term adoption and impact on the financial and blockchain industries remain to be determined.
Why This Matters
The materials describe a narrow update: Circle has launched the public mainnet for Arc, a Layer 1 blockchain designed for financial markets, payments, and AI-powered economic activity. Whether Arc’s blockchain will become a playground for traders and on-chain enthusiasts.
Broader Context
Source materials place the announcement in this context: Circle is the company behind USDC.



