What will happen with Blockchain technology in the next 50 years?
Probably will be replaced by other technology.
why your title difference than your topic?
No need to mention that blockchain technology is used in crypto currencies, so i don't find any particular reason due to which this technology will be replaced by some other Technology. There might be improvements in it with time and definitely there will be. I think we are just entering into a new era. After a decade or two digital currency will be used in even micro payments and maybe by that time we will have no paper money.
There would really be improvements to happen and theres no doubt on that because im sure that people do already see that blockchain technology would really be applicable into traditional things specially on banking system which we would really make some innovations which it would really be a big convenience and thanks for those who invented this technology.