So if a country with large resources wants to fuck up bitcoin they need only have 2 large hydoplants and 52% of the hash.
Thus CHINA could do it for about 6 billion
let check the math.
we are at 330 eh or 330,000ph or 330,000,000th
3,300,000 s19 pros = the network.
say 1000 for 1 or
3,300,000,000 cash to match the networks hash
let China take over bitmain build the units and they would make some extra ones so 4 billion means
4.0 all china 3.3 rest of us
you need power
4 units = 13.2kwatts
40 units = 132kwatts
400 units = 1320kwatts
4000 units = 13200kwatts
40000 units = 132000kwatts
400000 units = 1320000 kwatts
4000000 units= 13200000kwatts or 13200megawatts this dam in china does 20,000 megawatts
https://en.wikipedia.org/wiki/Three_Gorges_Damhttps://en.wikipedia.org/wiki/List_of_largest_hydroelectric_power_stationsso at the moment China could destroy btc for under 6 billion dollars if they choose to do so.
This is a roadblock to adaptation worldwide btc currency