How aUSD works

aUSD

aUSD is a crypto-native stable asset designed to provide users with both onchain liquidity and verifiable proof of reserves. When a user deposits ~$100 of USDT/USDC into the protocol, they receive ~100 aUSD in return (net of gas & execution costs). This process ensures that every aUSD is directly backed by real assets held in transparent custody.

Asset Backing

The capital supporting aUSD is primarily allocated into low-risk yield strategies, including short-term U.S. Treasuries, money market–style instruments, and market-neutral arbitrage opportunities. By focusing on assets that resemble traditional safe-yield products, aUSD aims to replicate the reliability of bank deposits while remaining fully composable within the crypto ecosystem.

Liquidity & Proof of Ownership

aUSD is not just a stablecoin — it is also a certificate of ownership. It enables users to retain liquidity onchain while ensuring their deposit remains productive. Funds allocated behind aUSD are managed through custody adapters and settlement orchestrators, ensuring that reserves remain accessible, auditable, and insulated from single-point counterparty risks.

Stability

aUSD maintains stability by anchoring directly to USD through its fully collateralized structure. Since assets are carefully selected to minimize volatility, aUSD does not require perpetual hedging mechanisms; instead, it relies on a 1:1 backing model with conservative allocation of funds.

Yield Pathway

Users who wish to access yield can upgrade their aUSD into saUSD, the yield-bearing layer of Sumplus. aUSD itself functions as the liquid, base unit of the protocol, while saUSD unlocks structured returns from the underlying strategy set.