WhitePaperInterestRateModel

WhitePaperInterestRateModel implements a single linear borrow-rate curve. The source remains supported, but this page does not claim that every current market—or any particular market—uses it. Resolve VToken.interestRateModel() before applying this API.

Constructor

constructor(
    uint256 baseRatePerYear,
    uint256 multiplierPerYear,
    bool timeBased,
    uint256 blocksPerYear
)

The two annual rate inputs are divided by the inherited slots/year value. A time-based deployment requires blocksPerYear = 0; a block-based deployment requires a nonzero value. The resulting immutable fields are named baseRatePerBlock and multiplierPerBlock; on time-based networks those fields hold per-second values.

Rate functions

function getBorrowRate(
    uint256 cash,
    uint256 borrows,
    uint256 reserves,
    uint256 badDebt
) public view returns (uint256);

function getSupplyRate(
    uint256 cash,
    uint256 borrows,
    uint256 reserves,
    uint256 reserveFactorMantissa,
    uint256 badDebt
) public view returns (uint256);

function utilizationRate(
    uint256 cash,
    uint256 borrows,
    uint256 reserves,
    uint256 badDebt
) public pure returns (uint256);

The borrow-rate formula is:

borrow rate per slot = baseRatePerBlock + utilization × multiplierPerBlock

All rate and utilization values are 1e18 mantissas. Read isTimeBased() and blocksOrSecondsPerYear() from the deployed model before annualizing.