Use Apollo MOON ROCKS rather than a platinum coin or fiat currency to resolve the debt ceiling and national debt.
The Apollo moon missions brought back 842 lbs. of moon rocks. Most of it is accounted for and under lock and key.
We already "paid" for the rocks, with the Apollo space program costing taxpayers $145 billion in 2007 dollars.
If we were to declare MOON ROCKS as the new "gold standard" and declare a value of $1 billion per ounce, we would suddenly have $13.47 TRILLION in the bank -- which should be more than enough collateral for continued borrowing and spending.