Algorithm to minimize capital gains tax

Question

I've made thousands of cryptocurrency trades and have them in a CSV file with the necessary fair market values.

I'd like to use the specific-shares cost basis method to minimize my gains.

Is there a minimization algorithm that I could use to do this programmatically?

Or, is there any free open source software that could do this for me?

I found some interesting articles:

• TokenTax: 2017 Was the Perfect Storm for Crypto-Tax-Minimization Accounting
• Betterment: Lower Taxes with Our Improved Cost Basis Accounting Method

But, neither company seems to have published their algorithms. They also both require you to sign up, pay, and upload your trading data.