A TX between local participants?
As insightful capitalists and a dude in kebab hoodie said, take out cash from the bank. When asked questions, say you want to keep some in a safe deposit box due to lack of trust in financial system, and enjoy life. The bank may propose to take it out in 4 installments of 250K - accept their compromise if they don't want to give that 1M in cash right then and there. Of course, you don't use the ATMs for those figures.
Things get a little complex when the recipient is abroad. Some of the cooler traceless solutions today are cash to foreign precious metals account swaps, but they require highly trusted connections. In high tax places like France, Canada, Germany, California, New York, Australia, you're bound to come across one of such guys who specializes in matching folks in need of domestic cash, and those looking to move funds out of the country untaxed.
