Too Long; Didn't Read
Typically, the creation and use of regional (or local) currencies is initiated by their respective communities — that is, from the bottom up. Central governments, represented by central banks, facilitate (ostensibly) their systems. But they often prohibit the circulation of regional ‘certificates’, bills or other forms of money, arguing that these can devolve control over national monetary systems. At the same time, governments are often unaware of the economic effects of introducing local currencies.