There is an easier way.
Step 1: Go bald and evil.
Step 2: Steal some nukes.
Step 3: Go into a cheesy video conference with the leaders of the UN.
Step 4: Demand exactly ONE! MILLION! DOLLARS!
Step 5: Wait for your henchmen to stop mumbling and grumbling, then change your demand to exactly ONE HUNDRED! MILLION! DOLLARS!
Step 6: Don't fill in a tax form.

There, no need to bother with the heavy weight of gold, exchanging bitcoins at the right time for that heavy gold, or any of the other kerplonker-crazy stuff.
Plus, at some point someone might get lucky with Beyoncé, though that part might require a sequel and a lot more planning...