Hello
after 12 years i remember i bought bitcoin in 2010
is it possible to sell more than 50,000 bitcoins at once or is it better to sell direct to a private individual like grayscale or microstrategy?
You are great indeed, for you to hold onto such amount of Bitcoin till date show much about your resiliency in terms of Bitcoin price fluctuations. Having such amount of Bitcoin and want to sell them shouldn't require sending to centralized exchange but decentralized exchange, just for safety purposes. Also, ensure not to send whole stash of coins into exchange because of unnecessary flagging of accounts.