You'd be better off, turning U.S. Coinage into U.S. Crypto Coinage... Drop in a Dime and get back a USCC Debit Card containing 1,000 Decimal Cents... These will be used for Privacy Spending, along with Paper Coinage and Common Coinage, when paying amounts less than One Cent... I'm sure a small fee will be charged, which you'll collect... Naturally, you'll have to use "existing" USCC...