Circle built its reputation on USDC, the stablecoin that powers institutional DeFi and processes billions in daily volume. On Sunday evening, the company expanded beyond stablecoins for the first time with a product designed to take market share directly from its largest business partner.
cirBTC went live on Ethereum on June 8, a 1:1 Bitcoin-backed ERC-20 token that lets holders use their BTC in DeFi protocols including lending markets, decentralised exchanges, tokenised asset platforms, and stablecoin ecosystems. Each cirBTC is backed by native Bitcoin held in segregated regulated custody with reserve verification through Chainlink Proof of Reserve, allowing anyone to confirm the backing on-chain in real time.
The target is explicit. BitGo’s Wrapped Bitcoin (WBTC) has dominated tokenised BTC since 2019 with a market cap of approximately $7.3 billion and 85% market share. Coinbase’s cbBTC, launched in September 2024, has grown to roughly $5.4 billion and established itself as the primary institutional challenger. Circle is entering as the third major competitor with a specific argument: neutrality and transparency that neither incumbent can match.
The timing carries weight beyond product competition. Circle and Coinbase operate under a USDC revenue-sharing agreement that comes up for renewal in August 2026. Analysts estimate Coinbase collects over $900 million annually from that deal. Launching a product that directly competes with Coinbase’s second-biggest crypto product months before renegotiating a billion-dollar contract isn’t subtle. It’s leverage.
Why Wrapped Bitcoin Exists and Why It Matters
Bitcoin is the largest and most valuable cryptocurrency. It’s also one of the least useful inside DeFi.
The Bitcoin network lacks the native programmability that Ethereum provides. You can send BTC from one wallet to another. You can’t natively lend it, provide it as liquidity to a trading pool, use it as collateral for a loan, or plug it into the thousands of DeFi applications that run on Ethereum and its Layer 2 networks.
Wrapped Bitcoin solves that by creating an Ethereum-based token that represents actual BTC held in custody. For every WBTC, cbBTC, or cirBTC in circulation, there’s a corresponding Bitcoin locked in a vault. The wrapped token trades on Ethereum with all the programmability that implies while the underlying Bitcoin sits securely in custody.
The total wrapped Bitcoin market sits at approximately $15 to $20 billion in Q2 2026. That represents less than 2% of Bitcoin’s roughly $1.7 trillion market capitalisation. Over 98% of all Bitcoin sits outside DeFi entirely. That gap is either a ceiling reflecting structural barriers or an enormous runway. The entry of the world’s most trusted stablecoin issuer suggests the industry is betting on runway.
Circle’s Competitive Edge: Neutrality
The most important word in Circle’s positioning isn’t “transparent” or “regulated.” It’s “neutral.”
Coinbase’s cbBTC is issued by Coinbase, which also operates one of the largest centralised exchanges in the world. When an OTC desk, market maker, or prime brokerage client holds cbBTC, the entity that issued their collateral is also a potential trading counterparty and competitor. That creates a conflict of interest that sophisticated institutional participants take seriously.
Circle doesn’t operate an exchange. It doesn’t compete with its institutional clients for trading flow. It doesn’t have visibility into how clients deploy their wrapped Bitcoin on third-party platforms. That separation between issuer and exchange is what Circle means by “neutrality,” and it’s a powerful selling point in conversations with institutional counterparties who are sensitive to information leakage and counterparty conflicts.
The transparency argument reinforces the neutrality pitch. cbBTC reserves are verified through periodic attestations. cirBTC reserves are verifiable on-chain in real time through Chainlink Proof of Reserve, allowing counterparties to check the backing continuously rather than waiting for a scheduled report. For risk teams at trading firms and lending protocols that need to know their collateral is fully backed at every moment, real-time verification is a meaningful upgrade.
WBTC faces its own trust challenges. BitGo’s custodian transition in 2024 created governance uncertainty that prompted Sky (formerly MakerDAO) and Aave to reconsider their WBTC exposure. That episode demonstrated how custody concerns can shake DeFi integration overnight and opened the door for challengers.
The USDC Revenue-Sharing Angle
The corporate dynamics between Circle and Coinbase add a layer to this launch that goes beyond product competition.
Under their current USDC agreement, Coinbase receives 100% of the interest earned on USDC reserves held on its platform and a 50/50 split on off-platform holdings. At current interest rates and USDC’s $34 billion supply, analysts estimate Coinbase collects over $900 million annually from that single arrangement. The deal is up for renewal in August 2026.
Circle launching a product that directly competes with Coinbase’s cbBTC two months before that renegotiation isn’t coincidental. It’s positioning. If Circle can establish cirBTC as a credible alternative to cbBTC, it strengthens its negotiating leverage by demonstrating that it can compete against Coinbase rather than only cooperate with it.
Crypto analyst Omar flagged the dynamic directly, noting that Circle targeting cbBTC “feels like a direct shot” at Coinbase ahead of the renewal. Whether the launch changes the terms of the USDC deal is speculative. That it was designed to influence those negotiations is difficult to deny.
What cirBTC Means for DeFi
For DeFi users and protocols, cirBTC introduces a third institutional-grade option for bringing Bitcoin into Ethereum’s ecosystem.
Lending protocols like Aave and Compound can now evaluate cirBTC as collateral alongside WBTC and cbBTC. Each option carries different issuer risk, custody structure, and transparency characteristics. Competition between three credible issuers benefits DeFi protocols by reducing concentration risk. If one issuer faces problems, protocols can shift to alternatives without leaving the wrapped BTC category entirely.
DEX liquidity for wrapped Bitcoin pairs should deepen as cirBTC creates new trading pools on Uniswap, Curve, and other automated market makers. More wrapped Bitcoin options mean more entry points for traders and more efficient price discovery across the tokenised BTC market.
For institutional participants specifically, cirBTC offers something that WBTC and cbBTC don’t: access through Circle Mint, the same onboarding infrastructure used for USDC. Institutions that already have Circle Mint accounts can mint and redeem cirBTC through a familiar interface with established compliance, reducing the friction of adding a new product to their operations.
Circle CEO Jeremy Allaire signalled that cirBTC is just the beginning. Immediately after the Ethereum launch, he posted that “Arc is next,” referring to Circle’s stablecoin-native Layer 1 blockchain that raised $222 million from a16z, BlackRock, and Apollo and has processed over 244 million testnet transactions. cirBTC on Arc would create a fully Circle-controlled stack where the stablecoin, the wrapped Bitcoin, and the blockchain itself all come from the same regulated issuer.
The Race for 98% of Bitcoin
Less than 2% of all Bitcoin is currently tokenised for use in DeFi. That means over $1.6 trillion in Bitcoin sits outside the DeFi ecosystem entirely, held in cold storage, on exchanges, or in ETF custody without being put to productive use.
Circle, Coinbase, and BitGo are all competing for the same prize: convincing Bitcoin holders to bring their BTC into DeFi. The argument is compelling. Instead of holding Bitcoin passively, holders can earn yield by lending it, provide liquidity and earn fees, use it as collateral for loans, or deploy it across the growing universe of tokenised financial products.
The barriers to adoption are trust and custody risk. Wrapping Bitcoin requires handing your BTC to a custodian and trusting that they’ll return it when you want to redeem. That trust needs to survive exchange hacks, regulatory actions, custody transitions, and market crises. Circle’s bet is that its regulatory profile, real-time reserve verification, and issuer neutrality lower those barriers more effectively than the competition.
Whether cirBTC captures meaningful market share from WBTC and cbBTC will take months to determine. What’s clear immediately is that the wrapped Bitcoin market has gone from a single dominant player to a three-way institutional competition in under two years. For an asset class serving less than 2% of Bitcoin’s total market, the best days of this race are still ahead.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry significant risk. Always conduct your own research before making any investment decisions.
