EU has it's own open-source Digital Signature service https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/Digital+Signature+Service+-++DSS https://ec.europ

EU has it's own open-source Digital Signature service https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/Digital+Signature+Service+-++DSS https://ec.europa.eu/cefdigital/wiki/display/CEFDIGITAL/Digi...