They'll have to pry my gold from my cold, dead hands.

Confiscation has happened before. Just like gun registration they need to know who has what before they can confiscate.
http://mises.org/daily/3056

"Provides that a person who is in the business of purchasing precious metal shall not pay for the precious metal in cash and shall record the method of payment.”

So... if you aren't legally allowed to pay for gold with cash, how are you then supposed to purchase it? Or is that the point, keeping it limited to things like credit/debit cards to track sales? Either way, this is incredibly unjust and should not pass.