All of the Evidence server side infrastructure artifacts are shipped in the "curam.core.sl.infrastructure.impl" package. The key elements found here include the Evidence Controller / Evidence Controller Hook (see section 3.8) classes and the Evidence Interfaces. The Interfaces form part of the Interface Hierarchy. The Participant Evidence Interface and Evidence Interface both extend the parent Interface, Standard Evidence Interface. These Evidence Interfaces will be the artifacts of most interest to designers / developers as each evidence entity will need to implement this interface.