Highlights - eIDAS ready - Legally compliant long-term preservation of the evidentiary value of electronically signed documents - Proof of changes to electronically archived documents - Basis: ArchiSig & international LTANS/ERS standard - Fast processing of large document volumes through efficient hash tree procedure Electronic signatures are created on the basis of cryptographic algorithms that have a certain strength or security. With technical progress, this strength decreases, e.g. with faster computers. In order to ensure the long-term preservation of evidence for certain data and documents (e.g. files in the social security system, patient files in health care institutions), digital signatures must be renewed regularly using current, ' ...