No one can kill bitcoin, spartancoin and other crypto currencies if the hash algorithms are not cracked, which is impossible within hundreds of years in future, but the future can develop more new and advanced algorithms. Math is so perfect. It seems that math is a logic abstraction invented by human, NO! - math is discovered by human. In a certain standard, physics, chemistry, biology and other science are real - math is only abstraction. But throughout the entire universe, math is the real nature - physics, chemistry, biology and other science are the specific implementation of math. So it is not that human invent math, it is human discover math. Math is perfect, no defects, never make mistakes, MATH IS GOD!