I suggest IOTA, a revolutionary next generation public distributed ledger that utilizes a novel invention called a Tangle which is a new data structure as such it has no block, no chain and also no miners. Even though it is still in developing stage, it had already received significant investment from reputable venture capital company the Borch Group , thus providing great credibility to the project. It has a strong , very experienced and talented, dedicated team who vow to make IOTA into a trillion dollars company. It is trading @ about 2.00, I think it can 3x easily by end of 2018.