Yes, Bitcoin market value can still go up. Not only Bitcoin is having a steep decline in terms of market value but other altcoins as well. Just hold your Bitcoins for the moment and do not panic sell. Panic selling can contribute the market value of Bitcoin to go down continuously. It is normal that the value of Bitcoin to go down because the market value of Bitcoin is volatile. If they go down it goes down so fast but if it goes up, it goes up so high.