The best way to do it is to register company in Estonia. Estonia has 0% corporate tax - it means as long as you keep Bitcoin in company balance there are 0 taxes if you get capital gain and cash bitcoin out and keep money in the company account its still 0 tax, after that when you reinvest into you business development all this will have 0 tax as well.

Estonia has also the best legal framework to trade with crypto. If you are looking for more information www.consulting24.co

Hi, it all depends on what services you wanna provide. Im the founder of www.consulting24.co, we help with crypto licenses in Estonia. Those licenses enable crypto to crypto, crypto to fiat transactions. Covers functionality to hold users' user funds. With that license you can provide most of the functionalities needed.