Circle has launched the public mainnet of Arc, a new Layer 1 blockchain designed around stablecoin payments, financial markets and other forms of onchain financial activity.
But the most notable part of Arc is not simply that Circle now has its own blockchain.
It is that USDC is used to pay transaction fees on the network.
That changes the usual model for blockchain users. Instead of acquiring a separate native token to pay gas, users and applications on Arc can use USDC for transaction fees. Circle says Arc is also EVM-compatible and provides deterministic sub-second settlement finality.
Also read: Circle Mints Another 250M USDC on Solana as USDC Supply Tops 71B
USDC Becomes Part of the Network’s Core Infrastructure
On most major blockchains, the asset used to pay transaction fees is separate from the stablecoins and other assets being transferred.
Ethereum uses ETH. Solana uses SOL. Other networks have their own native assets.
Arc takes a different approach.
USDC, Circle’s dollar-backed stablecoin, is integrated directly into the network’s fee mechanism.
That matters because businesses moving stablecoins generally do not want users or financial applications to maintain balances in another volatile asset simply to pay network fees.
Circle is effectively making the dollar-denominated asset used for financial transactions also serve as the payment mechanism for the blockchain itself.
Circle says more than $74 billion of USDC is currently in circulation, giving Arc an existing stablecoin ecosystem to build around rather than introducing a new payment asset.
Arc Is Built for Financial Markets
Circle is not presenting Arc as another general-purpose blockchain competing primarily for retail DeFi activity.
The company describes it as an economic operating system designed for payments, financial markets and what it calls the “agentic” economy.
The network launched with more than 100 institutional and ecosystem builders and more than 100 applications spanning banks, asset managers, payment networks, exchanges, custodians, DeFi protocols, wallets and AI platforms.
That gives Arc a very different starting point from many newer chains that launch first and attempt to build an ecosystem afterward.
Circle is launching Arc with financial infrastructure already attached to it.
Traditional Finance Is Already Involved
The validator structure is another important part of the launch.
Circle says the initial validator cohort includes institutions from across the financial system, while reporting on the launch identifies companies including BlackRock, Visa, Mastercard and DTCC among the participating validators.
This puts Arc’s blockchain infrastructure unusually close to traditional financial institutions from the beginning.
The implication is significant for Circle’s broader strategy.
The company is not only issuing a stablecoin and providing payment infrastructure on existing blockchains. It now controls a blockchain specifically designed around the movement and settlement of digital dollars and other financial assets.
What About the ARC Token?
There is another detail worth watching.
Circle has completed a genesis mint of 10 billion ARC tokens, according to reporting on the launch.
However, that does not mean ARC is currently a publicly traded token.
Circle has not committed to a public launch of the token, meaning the existence of the genesis supply should not be confused with a live retail token market.
For now, the important asset on Arc’s network is USDC.
That makes the blockchain unusual: its economic activity can be centered around a stablecoin while a separate ARC token remains a future possibility rather than the asset users need to acquire for everyday gas payments.
Why Arc Matters
The bigger question is whether specialized blockchains can make onchain financial activity easier for institutions to use.
For a business, paying a transaction fee in USDC is conceptually straightforward.
There is no need to purchase a separate gas token, maintain an additional treasury balance for network fees or manage exposure to a volatile blockchain asset simply to move dollars onchain.
That does not automatically make Arc more useful than Ethereum, Solana or other networks.
But it does show where Circle believes part of the next stage of blockchain adoption could come from: infrastructure built around stablecoins rather than infrastructure where stablecoins are simply applications running on top.
Arc’s launch therefore represents a broader shift in Circle’s strategy.
Circle is no longer only trying to make USDC available across other blockchains.
It is building a blockchain around USDC.
And that distinction could become increasingly important as banks, payment companies and asset managers move more financial activity onchain.
Sources: Circle, The Block and Cointelegraph reporting on the Arc mainnet launch.