Before blockchain revolutions? I don't see how the blockchain would impact 2020/2077 in any way
Also, a friend of mine has an idea that the first true unkillable AI will run inside a blockchain, and it would be economically infeasible to hack it as it would require owning more than 50% of its infrastructure. But that's still sci-fi.
Diamond age had a distributed tuple space, which was kind of similar in effect, enclaves that made their living off of work their computers did for digital pay.
Centralised money, like dictatorships, is only good when benevolently ruled.
For the majority, money is wielded more against than for their interests.