Product1 publisher2 min readPublished
Circle's Arc mainnet makes USDC both the unit of account and the gas token
Arc's founding validator set has twelve members, drawn from card networks, clearing houses and asset managers. The company that issues the chain's fee asset is also the company that can freeze it.
The Product Desk · Product desk
What happened
- Circle opened the public mainnet of Arc on Wednesday, an Ethereum-compatible chain that uses USDC as its unit of account and as the asset holders spend on transaction fees.
- The founding validator set names BlackRock, Visa, Mastercard, DTCC, ICE, Standard Chartered, Galaxy, MoneyGram, SBI Group, Sumitomo Corporation and Global Payments, alongside Circle itself.
- BlackRock is expected to put its BUIDL tokenized money market fund on the network, and BNY, HSBC, Societe Generale and State Street appear among the early institutional participants.
Compiled by The Product DeskSomething wrong?How this is made
Why it matters
- decision A payments team adopting Arc collapses three vendor relationships into one: the issuer of the money, the operator of the fee asset and the sponsor of the ledger are the same company, so diligence moves from validator counts to contract terms.
- exposure An address frozen at the issuer level on Arc loses the ability to transact at all, because the frozen asset is also the only thing that pays fees.
- constraint Treasury cannot hold gas in an asset outside Circle's control on Arc, so the usual hedge of keeping a separate fee-token float is unavailable.
- precedent With Coinbase routing to Base and Robinhood running its own chain since July, whose company operates the settlement layer becomes a procurement line item next to processor and custodian.
Funding a new chain usually starts with buying its native token before you can move a single dollar of value. On Arc the fee asset and the payment asset are the same line item, because USDC does both jobs [2].
Circle named eleven institutions alongside itself in the founding validator set [3], which comes to twelve validators [4]. Gizmodo described them as the names that "already clear securities, process card payments, and custody trillions in assets in the traditional financial system" [14].
The freeze capability is not new and not specific to Arc. Circle can already blacklist addresses and freeze USDC balances on any chain where it issues the token [5], and the company has said it will not do so without a court order or direction from law enforcement [6]. On a chain where USDC also pays the fees, a freeze reaches further. Elsewhere a frozen USDC balance leaves the address holding that chain's own fee token; on Arc the frozen balance is the fee token [9].
Circle calls Arc an "economic operating system for the internet" [12]. A settlement procurement review starts with what a transaction costs and how a validator is added to the set. The Gizmodo report does not state either [16].
It is also worth checking the company's forecasting record before pricing a ten-year bet on its chain. At a 2016 event, Circle chief executive Jeremy Allaire said, "It's highly unlikely that any of us will be using Bitcoin in five or ten years" [13]. Gizmodo notes that bitcoin did not fade and has grown into a digital gold of sorts [15].
Before anyone opens a migration ticket, I would sort this into two columns: failures a named, regulated validator set actually removes, and failures it leaves in place. Into the first column go the disputes where you need to know which entity ran the node that settled your payment, because the twelve are companies your legal team can serve [3][4]. Into the second goes anything downstream of the issuer. A court-ordered freeze is still a freeze, and on Arc it takes the fee balance with it [6][9].
On Arc a team is choosing a counterparty who happens to publish a chain, and the diligence that matters is the contractual kind: what Circle has committed to in writing about when a balance gets frozen, and what recourse exists when it is. The stated policy today is court order or law enforcement direction [6]. In my view that makes this a policy call about Circle's freeze terms, and the people who will answer for it on Friday sit in compliance.
What to watch
- Whether any institution outside banking, cards and asset management gets an Arc validator node, and on what terms.
- Whether BlackRock's BUIDL fund actually lists on Arc and whether the listed banks move real balances rather than pilots.
- The first court-ordered freeze of an address on Arc, and how the affected party pays fees to recover anything.