Circle Launches cirBTC on Ethereum as BlackRock Rotates $230M From Bitcoin Into ETH

Ethereum News

Circle has launched cirBTC, a token backed one-to-one by Bitcoin, on the Ethereum network, extending the firm's reach beyond its dollar-pegged stablecoin business. The New York-based company designed the asset to let Bitcoin holders put their coins to work across DeFi protocols, including lending markets, decentralized exchanges, and tokenized-asset platforms. By bringing wrapped Bitcoin onto a programmable chain, Circle aims to close the gap that has historically kept BTC sidelined from on-chain finance. The move positions the company to compete for institutional flows, leveraging the credibility it built through USDC, currently the second-largest stablecoin with a market cap above $75 billion.

The cirBTC debut sets up a direct contest with established synthetic Bitcoin products. Wrapped Bitcoin, introduced in 2019, remains the category leader with a market cap near $7.3 billion, while Coinbase's cbBTC, launched in 2024, sits just under $5.4 billion. Combined, all synthetic Bitcoin tokens represent between $12.5 billion and $13.5 billion, roughly 1% of Bitcoin's total value of around $1.25 trillion. Circle is pitching cirBTC to institutions that concentrate allocations in Bitcoin yet want exposure to yield strategies. The launch could pit the firm against Coinbase and custodian BitGo for dominance of the institutional wrapped-BTC segment on Ethereum.

In a separate institutional signal, BlackRock executed an on-chain rebalancing that saw the asset manager sell 3,671 BTC worth roughly $230 million while buying 10,566 ETH valued at about $17.71 million. The transaction pushed total ETH inflows above 10,000 ETH for the linked wallet during the operation, pointing to a deliberate accumulation pattern. The shift lands during one of the most volatile stretches of 2026 for both assets and underscores that even the largest digital-asset manager is actively repositioning rather than holding passively, adjusting exposure based on valuation and prevailing market conditions across crypto.

The rotation unfolded against a backdrop of heavy redemptions from BlackRock's flagship ETF products, with both its spot Bitcoin and Ethereum funds absorbing outflows during the same period. That combination, selling spot BTC into a wallet while ETF baskets bleed, suggests tactical management rather than a wholesale exit from either asset. On-chain data shows the buy lifted Ethereum exposure for the address even as headline sentiment stayed tilted toward Bitcoin. For market watchers, the episode reinforces a recurring theme of 2026, institutional desks treating ETH as a discounted accumulation target during drawdowns.

Circle's arrival also carries direct implications for Ethereum liquidity. Each unit of cirBTC minted introduces fresh Bitcoin-denominated collateral onto the blockchain, deepening the pool of assets available to lending desks, automated market makers, and structured-yield products. Greater wrapped-BTC supply tends to tighten borrowing rates and expand the collateral menu that protocols can underwrite against. If Circle converts even a fraction of institutional Bitcoin balances into on-chain form, Ethereum stands to capture additional total value locked and transaction throughput, strengthening the network's role as the settlement layer for synthetic Bitcoin activity.

Taken together, the two developments sketch a market where capital is migrating onto Ethereum from multiple directions. Circle is routing Bitcoin liquidity into Ethereum-native DeFi, while one of the world's largest allocators is swapping spot BTC for ETH on the same chain. Both moves rely on the network's programmability and its established exchange and protocol infrastructure. Yet the timing is notable, this institutional positioning is accumulating into price weakness rather than strength, a divergence that often precedes shifts in trend but offers no guarantee that near-term selling pressure has exhausted itself.

Technically, ETH trades near $1,669, down about 1.4% on the day and locked in a downtrend. The relative strength index sits at 27.3, deep in oversold territory and a level that historically precedes relief bounces, though the MACD remains bearish and confirms downside momentum. Price is hovering just below first support at $1,676; a clean break opens the path to $1,614 and then $1,545. Bulls need to reclaim $1,712 to neutralize the structure, with $1,826 the next upside hurdle. A daily close beneath $1,545 would invalidate any oversold-bounce thesis and confirm continuation lower.