The Sonic L1 network team has introduced the US Sonic Dollar (USSD), a dollar-backed stablecoin secured by U.S. Treasury bonds from BlackRock, Superstate, and WisdomTree.
Introducing USSD, the US Sonic Dollar.
— Sonic (@SonicLabs) March 9, 2026
A network-native USD stablecoin built to be the stable liquidity layer across the Sonic ecosystem and a core piece of our vertical integration initiative.
Built on @fraxfinance's infrastructure. Backed 1:1 by U.S. Treasury bills from… pic.twitter.com/4S0RZQQanm
“Stablecoins are the ‘money layer’ of on-chain finance. […] If Sonic wants to be more than just a place for deploying applications, it needs a reliable dollar primitive around which the entire network can coordinate,” the developers noted.
How Does USSD Work?
USSD will serve as the foundational liquidity layer for the entire ecosystem. It is built on the frxUSD infrastructure from Frax Finance, in accordance with the Genius Act.
The stablecoin is part of Sonic's vertical integration strategy. In addition to fulfilling basic functions, revenue from the underlying assets is intended to support liquidity, buybacks, and other mechanisms as the network grows.
Issuance occurs by depositing supported assets (USDC, USDT, PYUSD, USDB, BUIDL, USTB, WTGXX, and others) at a 1:1 ratio through smart contracts on Sonic. There is no issuance fee.
Redemption is executed through smart contracts on the user's chosen network, allowing for:
- liquidity movement between blockchains;
- settlements and treasury operations;
- position rebalancing between ecosystems.
For networks supporting CCTP, direct exchange routes between USSD and major dollar stablecoins are provided. In the future, qualified users will be able to redeem USSD directly for U.S. dollars (subject to KYC/AML compliance and issuer approval).
Market Dynamics
As of this writing, USSD's market capitalization stands at $550,785, with trading volume reaching only $2,126.
Source: CoinGecko.There are currently 550,653 coins in circulation.
The total market capitalization of the stablecoin sector is estimated at $314 billion, with USDT holding a 58.6% share.
Liquidity Returns
CryptoQuant analyst CryptoMe noted a rise in stablecoin liquidity. In December, the Federal Reserve ended its QT program and resumed purchasing Treasury bills. This decision positively impacted the stablecoin market.
Stablecoin Liquidity Is Rising Again! Is It Flowing Into Crypto Markets?
— CryptoQuant.com (@cryptoquant_com) March 10, 2026
“Even though these data still show weakness for now, they are promising for a long-term investment view.” – By @cryptometugce
Full analysis ⤵️https://t.co/6MPoD9ljBN pic.twitter.com/i4UVW35B23
Over the past three and a half months, the Fed has increased its balance as previously stated. Following this, from mid-February, the total market capitalization of USDT and USDC stablecoins began to recover from December's decline.
Issuers typically release new coins based on actual demand, so an increase in market supply often serves as an indirect indicator of capital inflow. However, it can also happen that a company may "print" stablecoins but not circulate them, keeping them in its own reserves.
To determine actual inflow, CryptoMe analyzed exchange data:
- The exchange netflow metric shows that the overall trend remains downward, but in recent weeks, inflows have started to increase;
- Stablecoin reserves on exchanges are also declining, but there has been a slight uptick here as well.
“The Fed is increasing the dollar supply, and stablecoin liquidity is also growing. Some of these funds are indeed entering the market. However, the strength of the inflow is still low, so short-term price fluctuations and pullbacks are possible. Even with the current weakness, the signals look promising for long-term investors,” the expert concluded.
Recall that in early March, the net inflow into stablecoins surged by 414.5%, reaching $1.7 billion in a week.