eArchiving technical specifications describe in detail the interoperable and open formats for packaging data and metadata for transfer to archival repositories (E-ARK SIP), for the preservation over extended periods (E-ARK AIP) and the reuse of archived content (E-ARK DIP). The most common principles and requirements are presented separately within the E-ARK Common Specification for Information Packages. Further details about eArchiving specifications are available at http://www.dilcis.eu.