Smart Contract

Note: The smart contract interface is under development and will be released soon. Below is a preliminary interface for informational purposes.

interface IUSDi is IERC4626 {
    // Liquidity management
    function deposit(
        address liquidityToken,
        uint256 amount
    ) external returns (bool);

    function withdraw(
        address liquidityToken,
        uint256 amount
    ) external returns (bool);

    // Lending and borrowing
    function issueLoan(
        address recipient,
        uint256 amount,
        uint256 rate,
        uint256 term,
        bytes calldata data
    ) external returns (uint256 loanId);

    function repayLoan(uint256 loanId, uint256 amount) external returns (bool);

    // Yield distribution
    function distributeYield() external returns (bool);

    // View functions
    function getCollateralRatio(
        address account
    ) external view returns (uint256);

    function getAccountLiquidity(
        address account
    ) external view returns (uint256);

    function getUtilizationRate() external view returns (uint256);

    function getCrossChainProtocolLiquidity() external view returns (uint256);

    // Events
    event LiquidityDeposited(
        address indexed account,
        address indexed liquidityToken,
        uint256 amount
    );
    event LiquidityWithdrawn(
        address indexed account,
        address indexed liquidityToken,
        uint256 amount
    );
    event LoanIssued(
        uint256 indexed loanId,
        address indexed recipient,
        uint256 amount,
        uint256 rate,
        uint256 term,
        bytes data
    );
    event LoanRepaid(
        uint256 indexed loanId,
        address indexed account,
        uint256 amount
    );
    event YieldDistributed(uint256 amount);
}

Disclaimer: The above interface is a preliminary draft and may be subject to changes. The final smart contract interface will be released after thorough testing and security audits.