CoinDesk
Circle has unveiled cirBTC, a wrapped bitcoin token backed 1:1 by BTC, live on Ethereum — positioning the stablecoin giant directly against Coinbase's cbBTC and BitGo's wBTC for control of the institutional synthetic bitcoin market.
The New York-based firm is pitching cirBTC to institutions that concentrate their crypto allocation in bitcoin and already trust Circle's infrastructure through its USDC stablecoin, the second-largest stablecoin with a market cap exceeding $75 billion. cirBTC is designed to let holders deploy their BTC wealth across DeFi protocols — lending, decentralised exchanges, tokenised assets, and stablecoins — without leaving the Ethereum ecosystem.
Why it matters
The synthetic bitcoin market sits between $12.5 billion and $13.5 billion in total market cap, roughly 1% of bitcoin's $1.25 trillion total value, making it a niche but fast-legitimising corner of DeFi. wBTC, introduced in 2019, leads with approximately $7.3 billion; Coinbase's cbBTC, launched in 2024, trails at just under $5.4 billion. Circle's entry brings a third institutional-grade custodian into a market that has so far been a two-horse race.
Market impact
Circle's brand equity with regulated institutions — built through USDC's compliance-first positioning — could accelerate adoption among BTC-native allocators who have been reluctant to use wBTC following BitGo's custodianship controversy in 2024 or cbBTC given Coinbase's exchange-native conflicts. Watch cirBTC's market cap trajectory over the next 60-90 days as the clearest signal of whether institutional trust translates into on-chain liquidity.
Frequently asked questions
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How does cirBTC differ from wBTC and Coinbase's cbBTC?
All three are 1:1 BTC-backed tokens on Ethereum, but cirBTC is issued by Circle, whose compliance-first reputation stems from operating USDC. wBTC is custodied by BitGo and launched in 2019; cbBTC is Coinbase's 2024 entry. Circle targets institutions already familiar with its stablecoin infrastructure.
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How large is the synthetic bitcoin market that Circle is entering?
The combined market cap of all synthetic bitcoin tokens sits between $12.5 billion and $13.5 billion, representing roughly 1% of bitcoin's total value of approximately $1.25 trillion.
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Why would institutions choose cirBTC over holding bitcoin directly?
Bitcoin lacks native programmability, making DeFi activities like lending and DEX trading difficult on its own network. Wrapped tokens like cirBTC let BTC holders access Ethereum-based DeFi protocols while maintaining 1:1 exposure to bitcoin's price.
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