I use analysis technical and fundamental for estimate the value increasing of bitcoin,
for short term estimate I use analysis technical usually be used on trading bitcoin.
I use analysis fundamental for estimate the value of bitcoin long time prediction,
sometime the estimate was work and sometime doesn't work.
Technical and fundamental analysis doesn't work anytime and that the thing we do really encounter o n trading up bitcoin because we won't know on when and where it would go,theres no indication and it's too volatile that's why we should be a keen observer kind of trader.
Estimating the value increase of the bitcoin is are really hard thing to do, and requires to be an experienced trader and a lot of researches on the market and the thing that influence it, and even then, you still can’t predict the exact price where the bitcoin is heading to, so the best thing to do is to watch the market and hope for the best.
I think the price of the bitcoin is related to the usage and user numbers. The more users, the higher the price.