Circle's cirBTC lands on Ethereum, putting wrapped-bitcoin market share back in play

Circle has launched cirBTC, a 1:1 bitcoin-backed token on Ethereum, opening a fresh front in the market for wrapped-BTC liquidity and challenging Coinbase's long-held lead with cbBTC.

By Monexus Staff Writermarkets4-minute read9 Jun 2026☆ Save ↗ Share ⎙ Print

Circle, the USDC issuer that has spent three years turning its dollar stablecoin into default collateral across decentralised finance, unveiled cirBTC on 9 June 2026, a token backed 1:1 by bitcoin and issued on Ethereum. The product puts a 70-million-customer payments company into direct competition with Coinbase's cbBTC and, by extension, with the older wBTC standard that long dominated the wrapped-bitcoin market.

The launch is a quiet but consequential reshuffle. Bitcoin remains the largest cryptocurrency by float and the most commonly pledged asset in DeFi, but most of that bitcoin does not natively live on Ethereum. Wrapped tokens exist to bridge that gap, and the entity controlling the bridge tends to extract a meaningful slice of the yield, fees, and governance leverage that flow across it. By entering the market with its own reserve-managed wrapper, Circle is signalling that the wrapped-bitcoin rail is now a strategic asset, not a side product.

What Circle has actually shipped

According to Cointelegraph's coverage of the launch, cirBTC is live on Ethereum and is positioned as 1:1 bitcoin-backed collateral aimed at institutional DeFi markets. CoinDesk reported the same launch, framing it explicitly as a challenge to Coinbase's wrapped-bitcoin franchise. The token sits inside Circle's broader product arc: a regulated USDC issuer, public-filing candidate, and custodian of digital-asset reserves extending its balance sheet into the largest non-stablecoin crypto asset.

The mechanics are familiar. Each cirBTC represents a claim on one bitcoin held by a custodian; the token can move through Ethereum smart contracts at the speed of a normal ERC-20, allowing it to be used as collateral on lending markets, in liquidity pools, and across derivatives venues. The economics of that wrapper — who custodies the underlying, who attests to the reserves, who collects the spread — are what Circle is contesting.

The competitive frame

The wrapped-bitcoin market has been unusually concentrated for an asset this large. wBTC, originally a BitGo-administered product, has carried the bulk of BTC-on-Ethereum liquidity for years. Coinbase's cbBTC, launched in 2024 as wBTC's merchant-distributed alternative, captured meaningful share by tying wrapped bitcoin to a US-regulated exchange. The market has therefore been a two-rail system — one quasi-decentralised, one exchange-controlled.

Circle's entry adds a third rail: stablecoin-issuer-controlled. That distinction matters. Circle's brand is built on attested reserves, monthly third-party reporting and a US regulatory posture that has, in the wake of the GENIUS Act framework, become more legible to large institutional users. If a treasury desk at a payments company or a market-maker wants bitcoin exposure on Ethereum rails, the question of which wrapper to use is increasingly a question of which issuer's attestations they trust under which supervisor. Coinbase's cbBTC carries exchange-custody risk; wBTC carries decentralised-governance risk. cirBTC is being sold on a reserve-management premise closer to USDC's.

What this is really about

Beneath the product news is a reshuffling of the institutional DeFi stack. Stablecoins provide the trading pairs and the settlement layer; wrapped assets provide the collateral. Whoever controls the largest pools of each can shape fee economics, listing decisions and governance votes downstream. Circle's pre-existing dominance in USDC has given it an unusually strong hand in stablecoin pairs; cirBTC is a bid to convert that hand into collateral-side leverage.

The structural read is that wrappers are no longer plumbing. They are strategic chokepoints. A 1:1 bitcoin wrapper issued by a US-domiciled, audited stablecoin issuer, distributed through Ethereum's deepest liquidity venues, is a piece of market infrastructure that institutional treasuries will be expected to interact with — directly or indirectly — over the coming quarters. The contest is over who sets the default.

Counterpoint and uncertainty

There is a credible counter-read. Coinbase's cbBTC already sits inside the deepest US-regulated on-ramp and off-ramp for bitcoin; its distribution advantage is real, and the marketing budget of the largest US crypto exchange is not easily matched. wBTC, meanwhile, has the inertia of incumbency and a deep base of DeFi integrations that do not switch wrappers lightly. Circle's claim to 1:1 backing is also only as strong as its attestations — the same scrutiny that has shadowed Tether now applies, in principle, to a bitcoin wrapper that will, over time, carry tens of billions in notional exposure. None of the early coverage specifies the initial mint, the fee structure, or the first institutional counterparties; the contract address and reserve-attestation cadence will determine how seriously the market takes the launch once the announcement cycle cools. The sources do not yet specify on-chain liquidity depth, the first venue listings, or the size of the launch reserves — a gap the market will close within days, not weeks.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

https://t.me/cointelegraph