How Is the ‘Risk-Free Rate’ Assumption in Black-Scholes Adapted for Crypto Options?
The risk-free rate assumption is adapted by using a proxy for the crypto market, such as the interest rate on stablecoin lending or a short-term Treasury rate, though the latter is less ideal. The chosen rate reflects the opportunity cost of capital.
Due to the lack of a true crypto risk-free rate, this input introduces modeling uncertainty.