Certainly. Cryptocurrency is completely legal in the UAE. Although initially the authorities ignored crypto technologies, they are now even supporting it, as the cryptocurrency business is boosting the economy. It is profitable for miners to do business in the UAE. Because there are many positives. For example - the first 50 years of doing business there is no income tax. There are no monetary limits on the transfer of capital and company income. You can open legal mining quite quickly. If you don't trust the comments, check out the article - is crypto mining legal in uae https://minery.io/ae/blog/is-crypto-mining-legal-in-uae/ . There are answers to all your questions.