so very risk because, however investing further extends the level of risk and it differs from investment to investment and thus there is no guaranteed assurance in any case, especially when it comes to the investments using crypto currencies.
yes i agree, to calculate the risk can be said there are but the number who do not know for sure but certainly every activity must have risks. perhaps in this case its value decreases due to several reasons. maybe you can speculate that later the value will go back up and then you will sell it but save bitcoin in a long time will risk loss, could be stolen from your wallet or damaged hardisk if you save it here.