Circle said on September 21 that eligible institutional customers can now borrow USDC through Circle Mint using bitcoin as the starting asset. The new Digital Asset-Backed Borrowing (DABB) workflow runs on Arc and Ethereum, with Morpho the only supported third-party lending protocol at launch. It gives customers a route to liquidity without selling their BTC, but the loan depends on wrapped collateral and the conditions of a separate lending market.
The distinction matters because Circle Mint brings the steps into one customer workflow; it does not set a universal borrowing price or make the loan through Circle’s trust bank. The Circle launch announcement says the chosen market determines rates, collateral requirements, liquidation thresholds, liquidity and availability. Those terms can change.
How the BTC-to-USDC route works
An eligible customer deposits native BTC and mints cirBTC, a wrapped BTC token. The customer then selects a supported lending market, posts cirBTC as collateral and borrows USDC, which appears in the Circle Mint balance. Repayment releases the cirBTC collateral, according to Circle. The company describes positions as open-ended and overcollateralized.
Circle says cirBTC is issued by Circle International Bermuda Limited and backed one-for-one by native BTC. It says the underlying BTC is held through a Bermuda affiliate and safeguarded by Circle National Trust, an OCC-regulated national trust bank and qualified custodian. These are Circle’s descriptions of the token and its custody arrangement, not an independent custody audit.
Circle Technology Services, LLC is the named DABB provider, and Circle describes the workflow as using a customer-controlled Smart Wallet. Circle National Trust says it does not accept deposits or make loans. The borrowed USDC comes through the third-party lending market, so this should not be read as a bank loan or a bank deposit. Circle also says digital assets are not FDIC-insured.
Availability is narrower than the headline suggests
Circle Mint is for institutions, not individual retail users. Circle says New York clients are excluded, and access elsewhere remains subject to jurisdiction and eligibility. Morpho was the sole supported protocol at launch; Circle identified other markets, including Aave, as prospective additions rather than current options.
The timing also matters. Morpho said on September 16 that its credit infrastructure was live on Arc, while describing the Circle Mint borrowing integration as still forthcoming. Circle’s September 21 announcement is the product-availability development. It does not establish that Morpho first arrived on Arc that day. CRYPTO MAIN NEWS previously covered Arc’s launch and its unanswered liquidity question; this borrowing workflow is a separate test of whether institutions use that infrastructure.
What the launch does not show
The case for the product is straightforward: an eligible institution may seek USDC liquidity while retaining BTC exposure. Yet depositing native BTC and borrowing against cirBTC introduces issuer, custody, redemption, smart-contract, market-liquidity and liquidation dependencies. Circle’s one-for-one backing description does not remove those risks.
Neither Circle’s launch notice nor Morpho’s Arc announcement reports how many institutions have used this particular Circle Mint flow or how much USDC they borrowed through it. The launch material also establishes no fixed borrowing rate, loan-to-value ratio or liquidation threshold. A product being available is therefore different from evidence of adoption or a predictable borrowing cost.
The next useful disclosures would be DABB-specific usage and the live terms of supported markets. Prospective customers also need to check current eligibility, available markets and liquidation parameters before acting, because Circle says market conditions can change. Circle’s current cirBTC product page describes availability on Arc and Ethereum, but it does not provide a DABB borrowing-volume measure.
Investment disclaimer: This article is provided for general information only and does not constitute investment, financial, legal or tax advice. Digital assets are volatile, and all investment decisions and their consequences are your own responsibility.