Circle Launches cirBTC: 1:1 Bitcoin-Backed Token on Ethereum for Institutional DeFi (June 2026)
— By Tony Rabbit in Markets
Circle launches cirBTC, a 1:1 Bitcoin-backed ERC-20 token on Ethereum for institutional DeFi, aiming to challenge WBTC and Coinbase.
Circle, the company behind the USDC stablecoin, has officially launched cirBTC on June 8, 2026. This new ERC-20 token on Ethereum is designed to be a 1-to-1 Bitcoin-backed asset, targeting the institutional decentralized finance (DeFi) market.
cirBTC aims to provide a robust solution for institutional lending, settlement, and broader DeFi engagement. This move positions Circle to directly challenge the existing wrapped-bitcoin market, which currently stands at approximately $9 billion.
Institutional Focus and Key Features
The primary users for cirBTC are institutions, over-the-counter (OTC) desks, market makers, lenders, and DeFi protocols. Circle's strategy is to offer a highly reliable and transparent Bitcoin-backed asset tailored to the needs of sophisticated market participants.
A core differentiator for cirBTC is its backing mechanism. Each cirBTC token is backed one-for-one by Bitcoin held by a regulated Circle entity. These Bitcoin reserves are segregated from Circle's corporate assets, enhancing security and trust.
Enhanced Transparency with Chainlink Proof of Reserve
Transparency is a cornerstone of the cirBTC offering. Instead of relying on traditional monthly attestations, Circle has integrated Chainlink Proof of Reserve. This provides real-time, on-chain verification of the Bitcoin reserves, offering unprecedented transparency and reducing counterparty risk.
Challenging the Wrapped Bitcoin Market
The launch of cirBTC directly targets the wrapped-bitcoin market, which has been largely dominated by WBTC. Circle's entry introduces a new, institution-grade competitor, potentially diversifying the options available for bringing Bitcoin liquidity into the Ethereum ecosystem.
This initiative also places Circle in direct competition with Coinbase, particularly in the realm of institutional crypto services. The battle for market share in the wrapped-bitcoin space is expected to intensify with cirBTC's introduction.
Future Expansion Plans
While cirBTC initially launches on Ethereum, Circle has indicated plans for future expansion. The company aims to make cirBTC multichain over time, broadening its accessibility and utility across various blockchain networks.
Frequently Asked Questions
What is cirBTC?
cirBTC is a 1-to-1 Bitcoin-backed ERC-20 token launched by Circle on Ethereum, designed for institutional DeFi, lending, and settlement.
When was cirBTC launched?
cirBTC was launched on June 8, 2026.
How is cirBTC backed?
cirBTC is backed one-for-one by Bitcoin held by a regulated Circle entity. These Bitcoin reserves are segregated from Circle's corporate assets.
How are cirBTC reserves verified?
cirBTC reserves are verified in real-time via Chainlink Proof of Reserve, providing on-chain transparency instead of monthly attestations.
Who are the target users for cirBTC?
The target users for cirBTC include institutions, OTC desks, market makers, lenders, and DeFi protocols.