There are simpler solutions than what you suggest -- which should prevent hyperinflation. The computational need for those systems would also be less than what are needed in your approach -- I am suggesting an electronic stamp scripp envisaged by Silvio Gissel implemented for a short time during the great depression in Worgl, Austria -- you can read about the approach in Margrit Kennedy's works

THe Worgl experiment is documented here and other stamp scrip efforts are discussed here