It supports both e-seals and e-signature, written in Java and guaranteeing portability on numerous platforms, it is open-source software under LGPL 2.1, a non-viral open source license, Alignment with the eIDAS related and regulation standards, Validation of multiple signatures as well as countersignatures, It supports EU standard on signature formats and validation procedures and also packing methods, Interoperability of the e-signature and also DSS is a flexible library which can be used its entirely or on a module by module basis and it provides the status of trust service, path validation as well as compensation of information, etc are the benefits of Digital Signature Services (DSS) for the users.