Fundamentally, the growth in the cost of bitcoin is not supported by anything. Its price is the result of speculation. He took a leading position, because he first entered the market. But the main task of the crypto currency as a payment instrument is to ensure fast and safe circulation of funds, and not to increase the rate at all. Bitcoin in this sense no longer meets the requirements for the largest crypto currency in terms of capitalization. It is rather a bubble, manipulation, speculative tool.