Sonic Labs launches USSD stablecoin backed by U.S. Treasury assets from BlackRock, Superstate, and WisdomTree to power DeFi liquidity.
Sonic Labs introduced a new network native stablecoin named USSD. The digital dollar aims to be the primary liquidity layer of the Sonic ecosystem. Developers expect the asset to aid in the growth of decentralized finance. The stablecoin also includes cross chain minting from over 10 blockchain networks.
Sonic Introduces USSD as Core Stablecoin for Its Ecosystem
Sonic Labs introduced the US Sonic Dollar stablecoin to boost its financial infrastructure. The asset is constructed out of infrastructure provided by Frax Finance. Developers confirmed that the stablecoin runs on the GENIUS compatible frxUSD framework.
Introducing USSD, the US Sonic Dollar.
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
— Sonic (@SonicLabs) March 9, 2026
The new stablecoin is geared to deliver the predictable digital dollar across applications. Developers designed USSD to support trading, lending, settlement and payments. Therefore, it serves as the basis of liquidity throughout the Sonic ecosystem.
USSD is also backed with institutional grade support from major financial firms. The reserve assets contain tokenized US Treasury instruments by BlackRock, Superstate and WisdomTree. These reserves are designed to keep a 1:1 support with the supply of the stablecoin.
The design incorporates a combination of the accessibility of blockchain and the conservative backing of assets. This balance is to give the users and institutions more confidence, developers said. As a result, the stablecoin could become an important financial tool in the decentralized markets.
USSD is now available on the Sonic network with cross chain minting capability. The stablecoin can be minted from more than 10 supported blockchain networks. Consequently, liquidity can flow in or out of the ecosystem without complicated bridging steps.
Institutional Treasury Assets Provide Stablecoin Reserve Backing
USSD reserves are made up of high quality short duration US Dollar based assets. These assets follow the same reserve model as Frax ecosystem. The aim is to be able to have consistent support while decentralised use.
Tokenized Treasury products are a large component of the reserves. These include BlackRock’s BUILD fund and Superstate’s USTB product. Additional Treasury backed assets may be added to the reserve structure as the system expands.
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The idea behind this approach is to build a stable and transparent base of reserves. U.S. Treasury assets are known to be one of the safest financial instruments in the world. Therefore, the inclusion of them may boost confidence in the structure of stablecoins.
Meanwhile, the reserve framework provides for USSD to be fully backed on a 1:1 basis. A stablecoin unit is equal to an amount in U.S. dollar assets. This structure is intended to minimize the risks of volatility that are common with algorithmic stablecoins.
In addition, the stablecoin allows its usage to be permissionless, developers explained. Anyone is able to interact with the system using smart contracts. This design guarantees open participation without gate keeping in the center.
USSD also includes the zero fee minting for supported assets. Users can deposit digital dollar tokens and mint USSD in the ratio of 1:1. Supported includes USD Coin, Tether, PayPal USD, and other approved dollar tokens.
Native Stablecoin Strategy Supports Sonic DeFi Growth
Sonic Labs introduced the stablecoin as part of an overall ecosystem strategy. Stablecoins were referred to by developers as the money layer of blockchain finance. Wherever there is dollar liquidity, trading and lending markets tend to grow faster.
The project is therefore looking to make liquidity a permanent part of the Sonic network. A native dollar asset can help to support decentralized exchanges, lending protocols, and derivatives markets. As a consequence, ecosystem applications may be based on a common settlement currency.
The stablecoin also allows for cross chain redemption and liquidity movement. Users can redeem USSD into dollar assets on multiple networks. This feature supports the treasury operation and liquidity balancing between blockchains.
Furthermore, the structure of Sonic is oriented around the integration of its financial architecture vertically. Developers want important pieces of finance to be on the same ecosystem. This approach may help to reduce the fragmentation between protocols.
Additionally, other features include ecosystem incentives that are associated with reserve yield. The income from Treasury backed assets may pay for network growth. For instance, money could be allocated to buyback programs or developer incentives.
USSD eventually has a number of financial purposes throughout the network. It serves as a trading quote asset, collateral for lending markets, and as a payment currency. These roles make stablecoins critical infrastructure for decentralized finance.
Overall, the launch is an indication of Sonic’s ambition to create a full ecosystem for finance. The stablecoin may help to attract developers and liquidity providers to the network. If adoption increases, USSD may become the main digital dollar used within Sonic based applications.