Its not redefining...The price of bitcoin is also unstable if compared to Indian rupees and the price of dollar is also slightly unstable compared to Indian rupees....As like other currency it is also a currency...But its digital currency but not digital money...Digital money are those which are stored in paytm or freecharge etc sites...But its a digital currency...Its just an evolution of technology..
It is really true. Human now a days continuously seek for change or somewhat we can say is that people wanted to have improvement in every technology we have. We improved things as it maybe, we make things impossible being possible. One way of proving it is the existence of bitcoin, with bitcoin it can help our lives easier than before. Money can specify as bitcoin that will happen soon.