I guess the argument is that crypto is the future, which I would not agree with, but if you actually think that crypto will be _the way_ in which the world will run in 50 years, then I guess a lot of crypto-related software will bring positive impact.
There's an existing interstate tax system called streamlined sales tax that could be used [1]. This is the system that computes and pays state sales tax on internet purchases and was implemented around 2008.
