Bitcoins and money.
Prior to Alaska statehood, there is a dearth of coins. BIG transactions were on paper but the nickel-and-dime transactions were difficult on stores’ books. So Alaskan businesses coined their own money. Called “bingles,” they were widely accepted. Until Alaska became a state and then these coins were called counterfeit.
[See my books at https://authormasterminds.com/steve-levi.]