Notes
How Aureus is built.
Each layer does one job, and each can be understood on its own. This is the public design — not a pitch.
Layer 1 — Isolated markets
The foundation is a minimal lending engine. Each Aureus market is a sealed five-part tuple — collateral asset, loan asset, oracle, interest model, and liquidation threshold — fixed at creation. In Aureus, the blast radius of any single stock is its own market — never its neighbors. The trade-off is that liquidity is per-market too: USDG lent to the NVDA market can only be borrowed by NVDA-collateral borrowers. That is what the vault layer solves.
Layer 2 — The USDG vault
Most lenders do not want to study eight markets, split funds across them, and rebalance as conditions change. The Aureus USDG vault (auUSDG) does it: one deposit, allocated across the stock markets according to a supply queue and per-market caps. Withdrawals draw on unborrowed liquidity at any time. Advanced lenders can skip the vault and lend directly to a single market.
Layer 3 — Equity-aware oracles
Every equity market prices its collateral through a dedicated oracle that wraps live feeds with the guards equities require. Collateral is priced by its stock feed and converted through an independent USDG feed — Aureus never assumes the dollar token is worth exactly $1. Stock feeds update 24/5. Overnight and on weekends the oracle serves the last traded price; only when a feed exceeds a staleness bound sized for the longest normal market closure does the market pause.
On-chain-native markets
Alongside the stock markets, Aureus lists blue-chip tokens native to Robinhood Chain — assets with no ticker, no closing bell and no equity feed. The first is PONS, the token of the chain's launchpad; the second is AI. The mechanism that protects an equity market is the LLTV; the mechanism that protects an on-chain-native market is the cap.
| Equity markets | On-chain-native | |
|---|---|---|
| Price source | Live equity feed | Pool TWAP + dollar conversion |
| Trading hours | 24/5, weekend gap risk | 24/7, no gap |
| LLTV | 62.5% single names, 77% ETFs | 38.5% |
| Primary risk control | LLTV buffer | Supply cap |
Interest & fees
Every market prices borrowing with an adaptive rate model. It continuously steers each market toward a target utilisation of about 90%: above target the rate ratchets up; below target it drifts down. Fees only ever touch interest, never principal. There is no deposit, withdrawal, or origination fee.
$Aureus
The $Aureus token is designed around a single idea, borrowed from how the rest of the protocol is built: do not promise outcomes — deploy mechanisms. The token does not pay yield, does not rebase, and is not backed by a pot. A published share of protocol revenue buys $Aureus on the open market and burns it.
What works when
| Nights & weekends | Oracle paused | |
|---|---|---|
| Lender deposits & withdrawals | available | available |
| Repay debt / add collateral | available | available |
| Borrow | at the held price | paused |
| Withdraw collateral (with debt) | at the held price | paused |
| Liquidations | at the held price | paused |
Enter the ecosystem when you are ready to trade, or open the book to browse the live markets.