Marginal interest rate model

JumpMultiplierPerYear can be interpreted as the annualized factor for the marginal fund utilization rate.

Kink refers to the marginal fund utilization rate.

$$BaseRatePerBlock = baseRatePerYear / blocksPerYear$$

$$MultiplierPerBlock = multiplierPerYear / (blocksPerYear * kink)$$

$$JumpMultiplierPerBlock = jumpMultiplierPerYear / blocksPerYear$$