TL;DR:
- Circle enabled the “Digital Asset-Backed Borrowing” service for verified Circle Mint institutional clients across the Arc and Ethereum networks, excluding New York users.
- Borrowers deposit BTC to mint cirBTC backed 1:1 by Circle National Trust and lock it into Morpho contracts as overcollateralized backing.
- USDC liquidity is credited directly to the user’s Circle Mint balance through customer-controlled smart wallets.
Stablecoin issuer Circle launched an institutional Bitcoin-backed USDC loan service available through its Circle Mint platform. The tool—Digital Asset-Backed Borrowing (DABB)—allows institutional entities to secure immediate liquidity in digital dollars without needing to sell their BTC reserves on the spot market.
Digital Asset-Backed Borrowing is now available in Circle Mint for eligible Circle Mint LLC customers.
Deposit BTC. Mint cirBTC. Borrow USDC.
Through one coordinated workflow, customers can use BTC-backed cirBTC as collateral through supported third-party lending markets on Arc…
— Circle (@circle) September 21, 2026
The operational mechanism requires clients to deposit Bitcoin to mint Circle Wrapped Bitcoin (cirBTC). Custody of the underlying asset remains under the fiduciary standard of Circle National Trust with a 1:1 backing ratio, as specified in the company’s technical documentation.
Subsequently, the user interacts from a non-custodial Smart Wallet with integrated decentralized finance (DeFi) markets. The Morpho protocol stands as the first decentralized platform enabled to supply cirBTC and draw funds.
The resulting USDC balance is credited directly into the user’s corporate account on Circle Mint. The company clarified that interest rate parameters, margin requirements, and liquidation thresholds depend exclusively on the smart contracts of the chosen decentralized protocol and not on Circle.
Technical Integration on Arc and Mitigation of Tax Friction
The rollout of cirBTC and this credit facility runs simultaneously on the Ethereum mainnet and on Arc, the Layer 1 blockchain optimized for institutional payments that Circle launched in September 2026.
Within the Arc network, the USDC token serves as the native gas asset for transaction fees. According to Circle’s official report, this infrastructure aims to provide reduced transaction costs for trading desks and corporate treasuries moving large volumes of capital.
The product’s design addresses a frequent requirement among corporate treasury holders. An industry source indicated that the structure seeks to avoid immediate taxable events triggered by liquidating assets, while preserving long-term exposure to Bitcoin.
The framework requires all positions to maintain strict overcollateralization. Data from the corporate announcement indicates that borrowers can release their cirBTC collateral and redeem it for BTC at any time by paying down the outstanding USDC balance.
From a regulatory standpoint, the service operates through Circle Technology Services LLC and enforces strict geographic restrictions. Clients domiciled in the State of New York are excluded from the product, according to the platform’s legal terms.
The firm stated that the next development milestone will include integration with Aave liquidity markets. This phase will expand collateralized borrowing alternatives across multiple compatible networks over the coming quarters.
