The Common Specification for Information Packages (CS IP) aims to serve three main purposes:
- Establish a common understanding of the requirements which need to be met in order to achieve interoperability of Information Packages;
- Establish a common base for the development of more specific Information Package definitions and tools within the digital preservation community;
- Propose the details of an XML-based implementation of the requirements using, to the largest possible extent, standards which are widely used in international digital preservation.
Ultimately the goal of the CS IP is to reach a level of interoperability between all Information Packages so that tools implementing the CS IP can be taken up by institutions without needing further modifications or adaptations.
As an implementation specification the CS IP defines an overall physical structure for Information Packages, detailing the position of data, metadata, and any other components within the package. Further, the CS IP describes in detail the requirements in regard to metadata, most notably the interoperable use of METS and PREMIS within any Information Package.
Please note that all requirements presented within the CS IP have been followed in the E-ARK SIP, AIP and DIP specifications. As such we recommend to start with the CS IP before getting to any of the other!