Startale Group introduced Startale USD (USDSC) on December 3, positioning it as the primary digital dollar for Sony’s Soneium Layer 2 and the Startale App, according to the project’s official launch post. USDSC runs on M0’s institutional stablecoin stack and sits at the core of payments, rewards, and settlements across Soneium’s consumer and DeFi rails.
USDSC trades as a dollar‑pegged asset on Soneium and Uniswap within the Startale App, with Startale describing it as “the default currency across the Startale App and the underlying stable value that powers transactions and activity throughout the wider Soneium ecosystem.”
How USDSC Is Structured
In its launch note, Startale stated that USDSC uses M0’s modular infrastructure, with backing in short‑term U.S. Treasuries and issuance structures designed to ring‑fence collateral for users.
“For Startale, this means introducing a digital dollar backed by short-term U.S. Treasuries and issued through structures designed to keep user assets secure,” the team wrote in its Startale USD explainer.
M0 previously built MUSD with partners such as MetaMask and Stripe’s crypto unit, and now provides the same programmable base for USDSC, connecting issuance, application logic, and liquidity for Soneium builders.
Startale CEO Sota Watanabe framed the product as a mainstream on‑ramp:
“USDSC makes it simple for users to earn, interact, and transact every day. We want onchain finance to be intuitive, safe, and rewarding for everyone on the Startale App,” Watanabe stated in the official blog.
M0 CEO Luca Prosperi highlighted the intent to give builders a programmable dollar inside Soneium’s stack.
“By building USDSC on M0’s open platform, Startale introduces a digital dollar for users across the Startale App and the broader Soneium ecosystem,” Prosperi noted in the same post.
STAR Points: Incentives Around Liquidity And On‑Chain Use
Launched in tandem, STAR Points function as Startale’s native rewards layer inside the Startale App. The program tracks and incentivizes specific behaviors:
- Holding USDSC.
- Providing USDSC liquidity through Uniswap.
- Completing quests in a Mission Center.
- Interacting with Soneium mini‑apps and dApps.
Star Points unlock future benefits such as gas credits, priority token launches, and ecosystem rewards, as laid out in the Startale STAR Points section. Select Soneium projects will use STAR Points as a distribution rail for tokens and access programs, effectively turning the app into a coordinated rewards hub.
Soneium’s Role And The Regulatory Backdrop
Soneium runs as an OP Stack optimistic rollup operated by Sony Block Solutions Labs, a Sony–Startale joint venture that moved to mainnet in January 2025 after a four‑month test phase that processed roughly 50 million transactions across 14 million wallets, according to Sony’s launch communication reported by CoinDesk.
A recent Soneium infrastructure review shows chain ID 1868, ETH gas, integration into the Optimism Superchain, and an on‑chain DA configuration with EIP‑4844 blobs, with September 2025 metrics around 264.6 million cumulative transactions and roughly $26 million in stablecoins bridged into the network.
USDSC arrives as Japan’s Financial Services Agency pushes forward payment‑stablecoin frameworks and pilots, including yen‑pegged trials by MUFG, SMBC, and Mizuho under the Payment Innovation program, as reported by local financial press and summarized in recent coverage of the Soneium ecosystem. In parallel, Nikkei reporting cited by Blockhead indicates Sony Bank targets a separate U.S. dollar stablecoin for fiscal 2026, aimed at game and content payments for U.S. customers via a partnership with Bastion.
That sets up a two‑track architecture around Sony: USDSC as the on‑chain settlement and DeFi dollar for Soneium, and a future Sony Bank stablecoin aimed at consumer checkout flows across gaming, anime, and subscriptions.
The Institutional Take
For desks, USDSC on Soneium changes the profile of stablecoin flow on an OP Stack chain that already routes traffic from Sony’s entertainment brands. The combination of an institutional‑style, Treasury‑backed issuer (via M0), a Sony‑backed distribution surface (Startale App), and STAR‑driven liquidity incentives creates a predictable base pair and carry asset for Soneium DeFi. That matters for routing decisions: once USDSC books material depth on Soneium DEXs, cross‑rollup stablecoin routing into this chain becomes more attractive for basis traders, and any future Sony Bank stablecoin on the same L2 would likely trade versus USDSC first, not USDC or USDT.
