MetaMask’s newly launched mUSD stablecoin has quickly crossed $65 million in circulating supply within just a week of going live, highlighting its early momentum and user adoption.
Key Takeaways
- mUSD reached $65 million in circulating supply one week after its launch on September 15, 2025.
- 88.2% of mUSD supply is on Linea, MetaMask’s Ethereum Layer 2 network, with 11.8% on Ethereum mainnet.
- The stablecoin is backed 1:1 by dollar-equivalent assets, including U.S. Treasury bills, and undergoes daily reserve audits.
- mUSD is fully compliant with the U.S. GENIUS Act, positioning it as a transparent and regulated alternative in the stablecoin space.
What Happened?
MetaMask, the popular self-custodial crypto wallet developed by ConsenSys, officially launched its own stablecoin mUSD on September 15, 2025. Within seven days, its circulating supply ballooned from $15 million to over $65 million, marking a more than 400 percent growth in under a week.
This impressive start signals not just demand for stablecoins, but confidence in MetaMask’s deeper ecosystem strategy as it seeks to bridge traditional finance and DeFi.
MetaMask USD ($mUSD) is now live. 🦊
— MetaMask.eth 🦊 (@MetaMask) September 15, 2025
The best way in and out of crypto is here. pic.twitter.com/h6zSUao7Ka
MetaMask’s Big Stablecoin Bet
MetaMask integrated mUSD directly into its wallet from launch, giving the stablecoin immediate access to over 30 million monthly active users. This native integration allows users to hold, send, swap, and spend mUSD seamlessly without needing external tools.
The majority of the stablecoin’s initial supply has been deployed on Linea, MetaMask’s Ethereum-compatible Layer 2 network, which offers lower transaction costs and improved speed. According to Seoul Data Labs, as of September 21, 88.2% of the mUSD supply is on Linea, while 11.8% remains on Ethereum mainnet.
MetaMask has indicated plans to expand mUSD support across more blockchain networks, promoting broader DeFi access and cross-chain utility.
Built on Strong Foundations
mUSD is issued through Bridge, a stablecoin platform owned by Stripe, and is minted using M0’s decentralized infrastructure. According to MetaMask, the token is fully backed 1:1 by high-quality, liquid, dollar-equivalent assets such as U.S. Treasury bills. These reserves are held using regulated custody solutions, ensuring fund security.
What sets mUSD apart is its commitment to daily reserve audits, offering transparency and trust in a market often clouded by skepticism over collateralization.
On top of that, the stablecoin operates under the U.S. GENIUS Act, a regulatory framework tailored for payment stablecoins. This compliance means strict reserve management and ongoing public disclosures, helping mUSD stand out as a regulated and responsible option.
Real-World Utility and DeFi Integration
Beyond holding and trading, mUSD offers real-world spending capabilities through its compatibility with the MetaMask Card, which enables payments at over 150 million merchants globally that accept Mastercard. Full card integration is expected by the end of 2025.
On the DeFi front, mUSD is already seeing strong traction, with $62.6 million in 24-hour trading volume during its first week. It supports use cases like lending, trading, yield farming, and more. Platforms like Linea have even offered better yield incentives for mUSD compared to established tokens like USDT and USDC.
CoinLaw’s Takeaway
Honestly, I’m impressed with how fast MetaMask’s mUSD gained ground. In my experience, very few stablecoins see this kind of explosive growth in the first week. What really stands out is the built-in wallet access to 30 million users. That’s not just a launch advantage, that’s a market strategy masterstroke.
Plus, aligning with the GENIUS Act and backing by U.S. Treasury bills brings much-needed clarity and legitimacy to a space that’s often murky. I found the Linea-first approach smart, offering cheaper transactions while maintaining Ethereum compatibility. If MetaMask plays its cards right, mUSD could become a new default in crypto finance, especially for users seeking stability, yield, and usability in one place.
