Smart ContractsMoonUSD

MoonUSD

MoonUSD is the protocol’s ERC-20 stablecoin, pegged to 1 USD. It is minted by depositing BTC collateral through the CDPManager and burned when debt is repaid or positions are redeemed/liquidated.

Address (Sepolia): 0x4f939a71809aee6691bd05bce8c3dec1faf915633a70838a40f4f63ada6e484

Features

  • Standard ERC-20 (transfer, approve, transferFrom)
  • Role-based minting and burning (only authorized contracts)
  • Pausable by owner (emergency halt)
  • OpenZeppelin ERC20Component + OwnableComponent + PausableComponent

Role Management

MoonUSD uses explicit minter/burner roles instead of a single admin:

RoleAuthorized Addresses
MinterCDPManager
BurnerCDPManager, StabilityPool, RedemptionManager

add_minter / remove_minter

fn add_minter(ref self: TContractState, minter: ContractAddress)    // owner-only
fn remove_minter(ref self: TContractState, minter: ContractAddress) // owner-only

add_burner / remove_burner

fn add_burner(ref self: TContractState, burner: ContractAddress)    // owner-only
fn remove_burner(ref self: TContractState, burner: ContractAddress) // owner-only

Mint & Burn

mint

Mints moonUSD to a specified address. Caller must be an authorized minter.

fn mint(ref self: TContractState, to: ContractAddress, amount: u256)

burn

Burns moonUSD from a specified address. Caller must be an authorized burner.

fn burn(ref self: TContractState, from: ContractAddress, amount: u256)

Read Functions

fn is_minter(self: @TContractState, address: ContractAddress) -> bool
fn is_burner(self: @TContractState, address: ContractAddress) -> bool

Emergency

fn pause(ref self: TContractState)    // owner-only
fn unpause(ref self: TContractState)  // owner-only

When paused, all mint and burn operations revert. Standard ERC-20 transfers remain operational.

CDPManagerPriceOracle