when I make a transaction, my transaction counterparty knows I need what he is selling and have money to pay for it. that is the data I am "allowing to be known by untrusted parties." so your study for the day is to look up the word "public." because that isn't what it means. using money is a PRIVATE intercourse. I decide who I interact with and what data to reveal in the process. your attitude that is *public by nature* is modern state-sponsored disinformation.