Oh thats very good news to us because if coinbase added qtum coin for sure this coin will increase I hope the price of qtum coin before end of this year 2017 so we can make a lot of profit in the future. So its better to buy more Qtum now because this day coinbase add qtum to their wallet . Hurry up buy qtum now and enjoy more profit to come with you. More qtum you will become hapoy for the result.