Circle has launched cirBTC, a token backed 1:1 by bitcoin, on the Ethereum network. The token allows institutions and bitcoin holders to use their BTC as collateral in decentralized finance markets without giving up their underlying position. The bitcoin backing is held at a regulated Circle entity, separate from the company's other assets.
Backed by real bitcoin, held separately
CirBTC is a straightforward concept: one token equals one bitcoin. Circle says the underlying BTC is stored at a regulated custody entity within the company. That entity is kept apart from Circle's other operations, meaning the reserves aren't commingled with corporate funds. For holders, that structure aims to reduce the counterparty risk that has haunted other wrapped bitcoin products.
What cirBTC unlocks in DeFi
The pitch is simple. Bitcoin holders who want to earn yield or get liquidity in decentralized markets often face a choice: sell or use a derivative. Both come with trade-offs. cirBTC lets them deposit BTC as collateral on Ethereum-based DeFi protocols without exiting their position. That opens up lending, borrowing, and liquidity mining for a huge pool of bitcoin that's mostly sat idle.
A regulated wrapper from a known issuer
Circle isn't new to tokenized assets. It already runs USDC, the second-largest stablecoin. cirBTC extends that play into Bitcoin. The regulated custody layer could make it more palatable for institutions that need to prove reserves are ring-fenced. It also puts Circle in direct competition with other wrapped bitcoin products, though few can match USDC's compliance track record. The launch is live now on Ethereum, with no word yet on additional networks.
