Has been proven that minimum value of cryptos is 0?
No. I even remember the days when we thought that zero was a floor for oil futures prices. But then reality hit. Given the sheer insanity and destructive capabilities of crypto, I see no reason to believe in the existence of a minimum value.
It takes energy to keep bitcoins alive, unlike real money (not FED money). So bitcoin could go negative, it will be like paying for a storage box where u store something useless.
Bitcoins similar to ideas of black-holes. Growing star that run out of new fuel (suckers), then implode, you paid the finger to get in, then it sucks in your arm...may be someone can calculate the entropy of it and if it will be any Hawking radiation leaking out?
but no one knows the future, except.... so it is just the black-hole-bitcoin model.
What is the main difference between the future of bitcoins and a black hole, the last one is centralised!