I would recommend Arthur C. Clarke's books. They were written decades ago but he envisioned many things that have come true and there's many more that will happen in the next decades. Not sure he predicted cryptocurrency but maybe that's in a book I haven't read yet.
To my knowledge, he never did. Nor did any science fiction writer of his time. They did imagine electronic money, but only in a centralized form.
I've read a lot of his books if not all of them.
I don't recall crypto-currencies or the internet.
I don't think anyone predicted that.