Bitcoin is universally accepted and works for the purchase of virtually all cryptocurrencies. Founded in and based in Dubai, BitOasis is one of the largest cryptocurrency exchanges in the Middle East. Located on the Mezzanine M Floor. The exchange accepts USD or EUR for deposits, and according to its website, provides the best crypto-to-crypto rates in the business. Christine Vasileva 2 days ago. Instant Verification. In addition, sites such as localbitcoins.