Countries in the developing world will soon follow in El Salvador’s footsteps and make Bitcoin (BTC) legal tender, BitMEX CEO Alexander Höptner recently predicted. In a blog post published Wednesday, Höptner expressed support for El Salvador’s adoption of Bitcoin as legal tender in September, predicting that developing countries would “lead the way” in adopting Bitcoin: “My prediction is that by the end of next year we will have at least five countries that will accept Bitcoin as legal tender.…