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Circle has launched cirBTC, a wrapped Bitcoin token backed 1:1 by native BTC held in regulated custody, positioning the USDC issuer as a direct competitor in the institutional wrapped bitcoin market currently dominated by products like WBTC.
The launch, announced on June 8, brings Bitcoin-backed collateral to Ethereum’s DeFi ecosystem, allowing institutions to deploy BTC in lending, trading, treasury, and settlement applications without selling their underlying holdings.
The move positions Circle, best known as the issuer of USDC, in the growing market for wrapped Bitcoin products, where tokenized versions of BTC are used across smart-contract networks that cannot directly interact with the Bitcoin blockchain.
Ethereum was selected as the first deployment network because of its established role as a hub for institutional DeFi activity, liquidity, and tokenized assets.
According to Circle, every cirBTC token is fully backed by native Bitcoin held in custody by a regulated Circle entity and segregated from the company’s corporate assets.
The structure is designed to provide institutions with a transparent and neutral form of Bitcoin collateral that can be integrated into existing DeFi workflows.
“cirBTC is now live on Ethereum, bringing wrapped bitcoin collateral into one of the deepest onchain financial markets,” — Team Circle, Circle announcement.
The company said the product is aimed at market makers, over-the-counter trading desks, lending protocols, treasury managers, and other institutional participants seeking to deploy Bitcoin within decentralized financial infrastructure.
By tokenizing BTC on Ethereum, users can access smart-contract functionality while maintaining exposure to the underlying asset.
A key component of the launch is Circle’s emphasis on reserve transparency. The company stated that cirBTC reserves are verifiable on-chain and supported through reserve monitoring mechanisms designed to give counterparties visibility into collateral backing.
Users can mint and redeem cirBTC through Circle Mint, the same institutional infrastructure used for USDC issuance and redemption.
Circle said this creates a unified operational framework that combines dollar liquidity through USDC with Bitcoin-backed collateral for institutional market participants.
The launch reflects a broader trend among crypto infrastructure providers seeking to attract institutional capital by emphasizing transparency, regulated custody arrangements, and verifiable reserves.
While Ethereum serves as the initial deployment network, Circle indicated that cirBTC is intended to become a multichain asset over time.
The company said future expansion will be supported through Arc, its emerging blockchain infrastructure initiative focused on digital asset and stablecoin finance.
Industry observers view the launch as another step in the convergence of Bitcoin and decentralized finance.
Although Bitcoin remains the largest cryptocurrency by market capitalization, its native blockchain lacks the smart-contract functionality available on Ethereum.
Wrapped Bitcoin products bridge that gap by allowing BTC value to move across programmable financial application.
The debut of cirBTC expands Circle’s role beyond stablecoins and into Bitcoin-based collateral infrastructure.
For institutional investors, the product offers a new mechanism to deploy Bitcoin capital in on-chain markets while maintaining exposure to the underlying asset.
As institutional adoption of tokenized assets and blockchain-based financial infrastructure continues to grow, the success of cirBTC could become an important indicator of demand for regulated, transparent Bitcoin-backed products in decentralized finance.
Ethereum’s deep liquidity pools and mature DeFi ecosystem provide Circle with a testing ground for that strategy, while future multichain expansion could broaden the token’s reach across the digital asset industry.
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