thUSD
thUSD (ThUSD.sol) is a simple ERC20 token extending OpenZeppelin's ERC20Burnable standard.
Minting and Burning
thUSD can only be minted and burned by the minter , which is set to the ThUSDMinter.sol contract.
In turn, the mint and burn/redeem methods on ThUSDMinter can only called by a permissioned group of users with the MINTER_ROLE.
Minting and burning is facilitated by a dedicated API with built-in pricing feeds, providing for the option to mint thUSD against non-stablecoin collateral in the future. For a given asset and amount, the API returns an Order struct which the minting user signs and passes to the mint or redeem methods.
Safety Measures
ThUSDMinter implements a
maxMintPerBlockandmaxRedeemPerBlock. These parameters are both initially set to 100,000.Order signatures are verified against their nonces to prevent replay attacks.
thUSD can only be minted against supported assets; initially these assets are USDC and USDT.
Staking
thUSD can be staked in strategy contracts such as DELTA:
DELTALast updated