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..
maybe it is considered an evolution of currency but not that particularly is a different kind of currency or money because its nature is always a digital currency. indeed technology changes a lot as time goes by, and as we can see that in the application of our modern currencies.