Bitcoin On Ethereum? Circle Launches cirBTC on ETH Targeting $9B WBTC Market
Bitcoin News: Circle has launched cirBTC, a 1:1 BTC-backed ERC-20 token now dwell on Ethereum mainnet, positioning it straight towards WBTC’s roughly $9 billion market and roughly 85% market share with a function its rivals don’t supply: real-time on-chain reserve verification with no reliance on third-party attestations.
The product went dwell June 8, 2026, and is constructed solely for institutional individuals, OTC desks, market makers, lenders, and DeFi protocols deploying Bitcoin as collateral inside Ethereum-based sensible contract ecosystems.
The aggressive goal is express. BitGo’s Wrapped Bitcoin has dominated tokenized BTC since its January 2019 launch, and Coinbase’s cbBTC has emerged as the first institutional challenger since September 2024, reaching roughly $5.9 billion in market worth.
Circle is coming into that race with a selected transparency argument and the institutional belief constructed over years of USDC issuance.
Bitcoin News: cirBTC’s Reserve Verification Model, What Real-Time On-Chain Proof Actually Means
The core technical differentiator is Chainlink Proof of Reserve. Each cirBTC token issued as an ERC-20 on Ethereum is backed by native Bitcoin held in segregated regulated custody, and counterparties can confirm that backing in actual time via a number of pockets addresses seen straight on the Bitcoin blockchain, no ready for month-to-month audits, no relying on custodian claims, no off-chain attestation lag.
This is structurally completely different from the WBTC mannequin, the place BitGo operates as the only real custodian and publishes pockets addresses for handbook verification, however reserve affirmation nonetheless relies upon on BitGo’s centralized management and governance multisig for contract modifications.
Tokenized Bitcoin – programmable and composable digital gold.
https://t.co/XVCXVzLfLi
— Jeremy Allaire – jerallaire.arc (@jerallaire) June 8, 2026
The RenBTC wind-down and broader criticism of custodial bridge opacity established the belief hole Circle is explicitly focusing on. Chainlink’s automated feed closes the verification loop on the contract stage quite than on the audit cycle.
Bitcoin belongings are stored separate from Circle’s company holdings, and minting and redemption run via Circle Mint, its institutional liquidity administration platform.
The identical infrastructure that powers USDC settlement rails is now prolonged to wrapped Bitcoin collateral, permitting corporations to carry native BTC in custody whereas cirBTC strikes via on-chain monetary purposes with out ever promoting the underlying place.
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The $15–20B Tokenized BTC Market: Where cirBTC Fits Against WBTC and cbBTC
The complete tokenized Bitcoin provide throughout all wrapped merchandise sits at roughly $15–20 billion in Q2 2026, nonetheless underneath 2% of Bitcoin’s roughly $1.7 trillion market capitalization.
That quantity is both a ceiling that displays structural boundaries to institutional DeFi adoption or an infinite runway.
The proof factors firmly towards runway: institutional demand for Bitcoin exposure in regulated on-chain formats has accelerated materially since 2024, and the merchandise capturing that demand are exactly the regulated, exchange-native wrappers cirBTC is competing towards.
WBTC holds roughly 119,000 tokens in circulation at roughly $8–9 billion market cap, controlling near 85% of the wrapped BTC phase. cbBTC trails at roughly $5.9 billion however has grown sooner than any comparable product since launch.
Other exchange-backed choices, Kraken Wrapped BTC, Binance Wrapped BTC, Bitget Wrapped BTC, OKX Wrapped BTC, collectively maintain the remaining margin.
Circle’s entry doesn’t change the market construction in a single day, but it surely introduces a credentialed issuer with an current institutional distribution community that none of these exchange-native merchandise can totally replicate.
Circle’s said structural benefit over cbBTC and exchange-issued wrappers is neutrality: it doesn’t function a centralized alternate, DEX, or lending protocol.
Institutions utilizing cirBTC as DeFi collateral will not be concurrently offering liquidity intelligence to a competing buying and selling desk. That separation issues to prime brokerage shoppers and multi-venue market makers who deal with info leakage as a fabric threat.
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