Circle launched cirBTC on April 11, 2026, a 1:1 BTC-backed wrapped token addressing DeFi liquidity fragmentation on Ethereum and Layer 2s. Users deposit native BTC for instant mints, with Circle custodians providing real-time Armanino attestations matching 100% of supply.
cirBTC Key Features
cirBTC deploys via Circle's minting system on Ethereum, Arbitrum, and Base. Redemptions demand proof-of-reserves checks.
Launch reserves backed 2,100 BTC ($152 million equivalent at $72,743/BTC per Binance spot). DeFiLlama logged $150 million initial TVL across Uniswap V3 and Curve pools on Ethereum mainnet.
Circle and partners seeded $100 million liquidity. Uniswap V3 cirBTC-USDC pools (Ethereum) yielded 4.2% APY at 16:00 UTC April 11, 2026 (DeFiLlama).
DeFi Liquidity Gains
WBTC dominates with $12.3 billion TVL on Ethereum mainnet (DeFiLlama), yet high fees and custody risks linger. Circle's simulations show cirBTC cuts slippage 15%.
Jane Street seeded Arbitrum cirBTC pools to $20 million depth hours post-launch. Dune Analytics confirms tighter spreads versus WBTC pairs.
cirBTC joins Aave V3 lending on Ethereum. Pendle strategies deliver 5.8% fixed APYs (DeFiLlama).
Launch Day Markets
BTC-USDT hit $72,743 on Binance spot at 16:00 UTC April 11, 2026 (+1.6%). ETH-USDT reached $2,233.65 (+2.4%) on Binance.
Fear & Greed Index hit 15 (extreme fear) on Alternative.me. USDT pegged $1.00 across CEXs. XRP-USDT rose 0.8% to $1.35; BNB-USDT gained 1.3% to $606.06 (Binance).
Uniswap V3 cirBTC-USDC volume topped $15 million in opening hours (Dune Analytics). Binance/Coinbase listings pending.
Custody and Security
Fireblocks handles multi-sig BTC custody in US and Singapore vaults—no single failure points.
Trail of Bits and OpenZeppelin audited Ethereum's non-upgradable proxy contracts. LayerZero bridges to Base and zkSync Era; Solana arrives Q3 2026.
Competitor Comparison
| Token | Custodian | TVL (DeFiLlama) | Mint Time | |--------|--------------------|-----------------------|-------------| | WBTC | BitGo | $12.3B (Ethereum) | ~1 hour | | tBTC | TSS (decentralized)| $450M (multi-chain) | Variable | | cbBTC | Coinbase | Base L2 only | N/A | | cirBTC | Circle/Fireblocks | $150M (launch) | <10 minutes|
Yield and Risks
Morpho Blue offers 3.5-6.2% APYs on cirBTC loans (DeFiLlama). Concentrated liquidity curbs impermanent loss.
Custodian and smart contract risks persist. Circle's USDC history clears MiCA hurdles. Mint/redemption spreads fund ops—no governance token.
Early Adoption Stats
Circulating supply reached 2,100 cirBTC by 16:00 UTC (Etherscan). 1,200 wallets held tokens; TVL climbed to $150 million (DeFiLlama).
Top 10 addresses owned 40% supply (Etherscan). Transfers surged 300% above WBTC norms.
BlackRock eyes BUIDL integration. Aave DAO votes on cirBTC collateral next week.
Efficiency Metrics
Circle backtests reveal 12% trade cost cuts in high-volume trades. Peg max deviation: 0.05%. Flashbots relays limit MEV in pools.
Fed rate: 4.75%; DXY: 105. The Block Research tracks $2B daily stablecoin inflows.
Roadmap
10-chain support by July 2026. EigenLayer restaking and Lido stcirBTC in Q4.
SEC trust expansion approved; MiCA unlocks EU. DeFiLlama trends project $1B TVL in 90 days (bull) or $500M (bear).
cirBTC's launch positions DeFi for institutional BTC liquidity.
