the goal of this code is to create an optimal crypto-portfolio with the top 12 cryptocurrency coins with the highest market caps.
i have used Modern Portfolio Theory, or also known as mean- variance analysis is a mathematical process which allows the user to maximize returns for a given risk level.
this code takes an input 't' which represents an interval of time, to get their historical prices said interval.
i have used mined data from the coincap api whose documentation is available at https://docs.coincap.io