An oldest central bank in a world, Sweden’s ‘The Riksbank’, started a research on an implementation of the national digital currency e-krona. The Riskbank announced that two-years long probe period, would be focused on a possible impact decision might have for the monetary system. Also they will research the possible technical solution with emphasize on a blockchain technology. This move is partially driven by the constant drop of the cash money used in Scandinavian countries. The Riskbank officials noted that e-kruna would not be the replacement of the cash but to compliment to it.