So... I know someone with about that many bitcoins. They have never used a notary to sell any coins whenever they want. They have cash in multiple countries in many different banks and jurisdictions. I wouldn't say the notary and police interviews are required.
Of course it is... that way there is no proof. I've done my own thing for a decade and I'm only worth low 7 figures in liquid assets. However I was offered 8 figures over 5 years to join a FAANG company nearly a decade ago but I don't play that game. Don't feed the beast. I was building autonomous cars more than a decade ago but didn't want to be a slave for Schmidt etc.
