Smart Contracts

The USD.infra Vault is implemented on Solana and is designed to handle mint + burn flows, vault accounting, and programmatic yield distribution based on explicit rules.

Contract surfaces:

• Mint/Redeem (USD.infra): stablecoin entry flow and 1:1 mint path, paired with reserves reporting.

• Vault contracts (sUSD.infra): deposit USD.infra → receive sUSD.infra. Vault accounting for participation in blended vault performance.

• Distribution logic: yield rules, fee deductions, and distribution events.

• Redemption logic: sUSD.infra → USD.infra protocol redemptions at the published exchange rate, settled from the liquidity sleeve, subject to verification, dynamic exit fees, liquidity-floor protections, circuit breakers, and queue ordering when the liquidity floor is reached.

• Liquidity management logic: The Vault adjusts redemption fees based on liquidity-sleeve utilization, enforces the circuit breaker, and may use available liquidity for qualifying DEX purchases of sUSD.infra when market price falls below exchange rate net of the applicable exit fee.

Upgradeability

The USD.infra Vault touches real capital and real assets. Rollouts are to be staged, conservative, and paired with transparent reporting (Deal Explorer + reserves + Vault state) so users can verify system health without relying on trust.