Cardano, the fifth most valuable cryptocurrency, has increased by 650 percent since the beginning of the year. By mid-May, Cardano had risen to an all-time high of $2.50, a gain of 1,288 percent. The intermediate "White" phase of testing, according to the company's CEO, is coming to a close this week. The "Purple" phase will begin next week, bringing third-party partners on board to guarantee that the new code is integrated with their systems.