What you think when you see movies like as 2000 years later as few of Hollywood movies are there, shown proper space age.
Block chain is a best tool to concur space age. I think already its beginning of spce age. As cryptocurrencies are good example of it.
How exactly blockchain is the best tool to conquer space age if it can't conquer good old earth?
It sure it the best way to introduce the best money aspect in space or on other planets, but we are so deeply rooted in old FIAT system it suddenly is not that easy.
My suggestion for cryptocurrency - first focus on Earth, then try to conquer space.