Stablecoin issuer Circle has launched a Bitcoin-backed borrowing service for institutional clients, allowing eligible Circle Mint customers to use BTC as collateral to borrow USDC through onchain lending markets. The service, named Digital Asset-Backed Borrowing, enables customers to deposit Bitcoin, mint Circle’s wrapped Bitcoin token cirBTC, and supply it as collateral to supported third-party lending markets on Arc or Ethereum. Morpho is the first lending protocol supported, with Circle planning to add Aave and other protocols. This rollout coincides with cirBTC going live on Arc.
According to Circle, borrowed USDC is deposited directly into the customer’s Circle Mint balance, while borrowing rates, collateral requirements, and liquidation thresholds are set by the third-party lending market. The borrowing positions are overcollateralized, with collateral supplied through a customer-controlled wallet to third-party DeFi protocols rather than lent directly by Circle. New York clients are excluded from this service. Circle previously launched cirBTC on Ethereum in June; the token is backed 1:1 by Bitcoin held in custody by Circle National Trust. These launches follow the recent rollout of the Arc mainnet, Circle’s layer-1 blockchain targeting stablecoin payments and financial markets, which uses USDC as its native gas token.
The introduction of Digital Asset-Backed Borrowing signifies Circle’s strategic move to integrate traditional institutional custody standards with decentralized finance liquidity mechanisms. By leveraging wrapped Bitcoin (cirBTC) as collateral within established lending protocols like Morpho, Circle provides a compliant pathway for institutions to access USDC liquidity without relinquishing control of their underlying assets to centralized lenders. This structure addresses a critical friction point in institutional crypto adoption: the desire for yield and liquidity generation while maintaining strict custody separation and regulatory compliance. The exclusion of New York clients highlights the ongoing jurisdictional complexities that continue to fragment the global digital asset market, forcing providers to tailor services to specific regulatory environments.
From an operational risk perspective, the reliance on third-party DeFi protocols for setting borrowing rates and liquidation thresholds introduces counterparty and smart contract risks that differ from traditional bank-led lending models. While Circle manages the custody of the underlying Bitcoin, the interaction between the wrapped token and external lending markets creates a dependency on the security and stability of those protocols. The planned expansion to Aave and other platforms suggests a broader industry trend toward modular financial infrastructure, where specialized entities handle distinct layers such as custody, tokenization, and lending execution. Market participants will need to closely monitor how these hybrid models perform under stress conditions, particularly regarding liquidation mechanics across different blockchain networks like Arc and Ethereum.
