Circle switched on Arc, its own Layer 1 blockchain, on Wednesday, with BlackRock, DTCC, ICE, Mastercard, Visa, Standard Chartered, MoneyGram, SBI Group, Sumitomo, Worldpay and Galaxy among its founding validators.
USDC is wired in as the network’s gas token, meaning transaction fees are paid in a stablecoin rather than in a volatile native asset. Circle put more than 100 institutional and ecosystem partners on the network from day one.
Chief executive Jeremy Allaire called it ‘the single most significant launch in Circle’s history since USDC itself.’
Public to Read, Permissioned to Run
The detail that defines this chain is one Circle states openly and presents as a selling point.
Arc’s validator set is permissioned. Anyone can read the chain, but only approved institutions produce blocks. Circle pairs that with what it calls a ‘defined governance perimeter,’ and argues the combination is what allows banks to use a public chain for treasury operations, trading and confidential payments.
That is a real answer to a real problem. A bank cannot settle client money on infrastructure where it does not know who is validating. But it is worth naming plainly, because it sits some distance from what most people mean by a public blockchain. The security of Arc rests on the identity and reputation of eleven named institutions rather than on open competition to produce blocks.
Circle describes the current arrangement as proof of authority and says a possible move to proof of stake could come in 2027.
The Token It Has Not Committed to Launching
Circle completed the genesis mint of ARC this week, creating all 10 billion tokens at once. It says this makes it the first publicly traded company to mint a network token for a new Layer 1.
It also says the mint ‘is not a commitment to publicly launch ARC,’ describing it as a technical step toward that possible shift to proof of stake.
Set that against another fact. Circle has already raised $222 million in an Arc token presale at a $3 billion valuation.
So investors have paid $222 million in connection with a token the company will not commit to launching publicly, and 10 billion units of it now exist. Neither statement contradicts the other outright. A move to proof of stake would require a token with real economic weight, and the caution may simply be regulatory. But the gap between raising on something and committing to launch it is the part of this announcement worth watching.
What Is Actually Connected
The ecosystem list is more substantial than most launch-day announcements manage.
BNY, HSBC, Societe Generale and State Street are among the banks with access. Aave and Morpho anchor lending. Uniswap, Aerodrome and Fomo provide trading. Binance, Kraken, Bybit and OKX offer routes in, with Coinbase to follow. BlackRock’s BUIDL and Circle’s own USYC supply tokenized collateral.
Circle says its testnet, live since last year with BlackRock and Visa among the participants, processed more than 700 million transactions in under a year. The chain ships with agent wallets, spending limits and nanopayments, aimed at automated transactions, and Circle cites Dune data putting USDC at 98.8% of agent-driven transaction volume.
Arc also supports optional post-quantum signatures, with broader protections described as in development.
This One Actually Shipped
Context matters here, because the past fortnight has produced a great deal of institutional stablecoin news and very little of it has been operational.
A consortium of 21 banks announced plans for a joint stablecoin targeting 2027. Citi and DBS completed a single weekend transfer. Visa opened settlement data to onchain lenders without naming a participating lender. Coinbase and Moov announced distribution to community banks with no launch date.
Arc is live, with named validators, connected exchanges and a working testnet record behind it. Whether institutions route meaningful volume through it is the open question, and nobody has published a number for that yet. But the distinction between announced and running is one worth holding onto, and this is on the right side of it.
