Prediction about crypto currency is not a easy work and it is really tough. But bitcoin is the king in the crypto world. In my personal opinion, bitcoin will stay nearly $25k in 2020. It is time for buying more and more.
Speculation varies with different factors like being popular nowadays which people really caught its attention. Blockchain technology have been definitely a hot topic for those who seek a fast transactions which it will definitely gives BTC more valuable asset. Moreover, its value still doesn't have really an exact data which it still increased or decreased depends on how it's being reacted to the market.
You have to understand that blockchain technology is a separate entity, sure it powered BTC. But definitely blockchain is also applicable to many services, specially company that plays a lot of data. The one thing that holds about bitcoin making a huge gain in 2020 is the block halving. So we will wait for a positive effect on the market after that event.