Aave is moving fast on Circle’s new wrapped-Bitcoin token. Just 2 days after Circle introduced cirBTC, Aave put it forward as possible collateral for its Ethereum lending markets.
Why that matters is simple: Bitcoin can’t be posted directly into Ethereum lending apps, so users need wrapped versions to borrow against it. cirBTC is Circle’s attempt to win that business by selling trust. The token is backed one-to-one by Bitcoin, and Circle is stressing reserves that can be independently verified on-chain, with those funds kept separate from the company’s other assets.
So this is not about replacing the wrapped Bitcoin already used on Aave. It’s about adding another choice, and one aimed squarely at users, desks, and treasuries that care about transparency and structure. The real story here is that wrapped Bitcoin is becoming a brand and credibility battle, not just a technical bridge, and Aave wants to be ready if Circle’s version gets traction.