It strikes me how uneducated people on hacker news still are about bitcoin. In 10 years, people didn't even take the time to inform themselves before posting wrong facts.
>Bitcoin is completely dependent on the availability of lots of power
Wrong. Bitcoin can work even if only one nuclear power station remains. The difficulty will adjust to the new hash rate, and as long as no single actor can control more of the nuclear power station than the sum of the miners, double spending isn't a problem.
As for network connectivity in apocalyptic scenario, miners would only have to find a way to propagate data to the satellite, and users would only have to find a way to propagate data to miners. That is a lot less than what the current financial system would demand to function.
Given that a 1 square meter solar panel produces 200W, and the energy efficiency of an Ebit E10 ASIC miner is 11100 * 10^6 hash per J, you can compute 200 * 11100 * 10^6 hash per second so no, in an apocalyptic event, the hash rate will hardly be 0.
>Bitcoin is completely dependent on the availability of lots of power Wrong. Bitcoin can work even if only one nuclear power station remains. The difficulty will adjust to the new hash rate, and as long as no single actor can control more of the nuclear power station than the sum of the miners, double spending isn't a problem.
As for network connectivity in apocalyptic scenario, miners would only have to find a way to propagate data to the satellite, and users would only have to find a way to propagate data to miners. That is a lot less than what the current financial system would demand to function.