What and which legal documents needs (for example if any licence) if someone want to open centralized exchanges like Bittrex?
Or there is no need any documents for open exchange? Want to know details.
this is a very complicated subject, you know this exchange: yobit.net (bad exchange)... they have no license, as many exchanges have no license, but you can travel to Malta, search for a lawyer in Malta and register your exchange in Malta and then you can prevent US customers from registering with your exchange, because you must first have a US license in order for US citizens to use your exchange.