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- Circle launched Arc mainnet with USDC as gas and more than 100 institutional and ecosystem builders.
- The bigger strategy is to connect digital money with FX, tokenized assets, credit and settlement on one network.
- DTCC’s tokenization work gives Arc a potential bridge to traditional securities, not just crypto-native assets.
Circle’s Arc mainnet went live Wednesday with some of the biggest names in global finance helping secure the network. But the more important story is not that BlackRock, DTCC, Visa and Mastercard are validating another blockchain.
Arc gives Circle something it has never fully controlled: the financial infrastructure surrounding USDC after the stablecoin leaves the issuer.
USDC already moves across dozens of external blockchains. With Arc, Circle is adding its own Layer 1 where USDC pays transaction fees, StableFX handles currency exchange, tokenized financial instruments can settle and lending protocols can provide credit. More than 100 institutional and ecosystem builders are participating at launch.
The strategy could gradually move Circle from primarily supplying digital dollars to providing more of the infrastructure through which those dollars are exchanged, invested and settled.
USDC Is Growing, but Circle Still Has an Interest-Rate Problem
Circle’s latest financial results explain why that expansion matters.
The company reported $701 million in total revenue and reserve income in Q2, with $668 million coming from reserve income. Other revenue contributed just $34 million. In other words, roughly 95% of the combined top line still came from the assets backing USDC.
The quarter also demonstrated the weakness in that model.
Average USDC circulation increased 25% year over year, but reserve income rose only 5% because Circle’s reserve return rate fell by 66 basis points.
More USDC therefore does not necessarily translate proportionally into more reserve income when interest rates decline.
Arc does not remove that exposure. It does, however, give Circle infrastructure around which it can develop other services as USDC adoption expands.
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StableFX Shows Why Owning the Network Matters
The commercial opportunity becomes clearer with StableFX.
Rather than merely issuing the stablecoin used in a transaction, Circle can provide infrastructure for institutions to exchange different stablecoins and currencies around the clock, with Arc underneath the process.
USDC being Arc’s gas asset also removes a familiar blockchain friction. Businesses do not need to acquire and manage a separate volatile token simply to pay network fees.
Arc combines that model with deterministic sub-second finality and EVM compatibility. Circle is effectively designing the network around financial transactions rather than expecting institutions to adapt their workflows to infrastructure originally built for more general blockchain activity.
That becomes more consequential once tokenized securities enter the same environment.
DTCC Could Bring Something Much Larger Than Crypto Assets
The participation of traditional financial institutions matters most where it leads to actual products.
Circle said in its Q2 results that BlackRock is expected to deploy its BUIDL tokenized money-market fund on Arc, while DTCC plans to enable tokenization of assets held at its Depository Trust Company subsidiary on the network.
DTCC’s own work shows the potential scale.
In July, the market-infrastructure provider successfully converted DTC-held securities into tokens and used them in live production transactions. Its broader tokenization service is scheduled for launch in October.
DTC holds more than $114 trillion of assets, according to DTCC. Its tokenization service is designed so the digital versions retain the same ownership rights, investor protections and entitlements as their traditional counterparts.
That provides a much more concrete reason to watch Arc than its validator list.
If some of those securities eventually become usable on Arc alongside USDC and other digital cash instruments, Circle would be positioning its network between two sides of a financial transaction: the asset and the money used to settle it.
Arc does not need to replace the conventional financial system for that model to matter. It only needs to become one of the networks through which those assets can move.
Arc Makes a Different Bet on Blockchain Trust
There is a trade-off in the design.
Arc is intended as an open network for applications, but its founding validator cohort is curated. Major financial institutions and market-infrastructure companies initially participate in securing the blockchain rather than validation being open to anyone from day one.
That gives Arc a different starting point from networks such as Ethereum.
Circle is effectively testing whether the institutions that already operate critical parts of global finance can also become operators of shared blockchain infrastructure.
The approach could make Arc more familiar to regulated institutions, but it also places greater importance on how governance and validator participation evolve.
Circle completed the genesis mint of 10 billion ARC tokens this week, although it has not committed to a public token launch. The company is exploring a transition from the current Proof-of-Authority architecture toward Proof of Stake in 2027.
That transition will determine how far Arc eventually moves from its institutionally curated starting point.
700 Million Transactions Will Not Prove Arc Works
Circle says Arc processed more than 700 million transactions during its testnet phase.
It is an impressive technical number, but a poor measure of whether Circle’s broader strategy succeeds.
The more useful metrics will be stablecoin FX volume, tokenized assets issued or settled on Arc, collateral deployed into credit markets and payment flows moving through the network.
Circle also does not need Arc to replace Ethereum, Solana or every other network. USDC’s existing multichain distribution remains valuable. Arc can instead become the environment where Circle has greater control over the economics and design of selected financial workflows.
That distinction matters because Circle already has enormous stablecoin activity. USDC generated $14.8 trillion in onchain transaction volume during Q2 alone, up 151% from a year earlier.
The harder challenge is capturing more value from that activity without depending almost entirely on the yield generated by USDC’s reserves.
Circle already supplies the money. Arc is a test of whether it can own more of what happens after that money starts moving.
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