http://6um5robivf2bcxdylmjtbn2h7dpx6onrmngyt77u6fnxklmyzrx7quad.onion
Since the early days, we (including Satoshi Nakamoto) agreed that
if the amount of mineable BTC became too low and the number of
lost wallets kept increasing, we would use the master key to
unlock those wallets. This is to prevent a situation where, as BTC
prices rise too high, people with low incomes can no longer access
it.