Szabo's bit gold ideas, or Bitcoin's ideas, when taken individually, are not remarkable. It is the combination of all of them, that truly gives the whole distr

Szabo's bit gold ideas, or Bitcoin's ideas, when taken individually, are not remarkable. It is the combination of all of them, that truly gives the whole distributed currency its elegance. And I would argue that Szabo is the first one to put almost all of Bitcoin's ideas together, in writing. Yes bit gold's proof-of-work takes a trusted timestamp as input, but simply changing it to take a head of the "chain of title" as input is really the only (minor) difference between bit gold and Bitcoin.