Provides facilities for extracting and comprehending provenance information from a workflow instance. This information is split into two sections, provenance of the process and provenance of the data. In myGrid terms the former is more like a status report and the latter the true provenance record.

Provenance of the process is defined in this case as the complete history of all state changes and their associated metadata for each processing entity within the workflow. The current state of the workflow can be extracted by taking the head of each of these lists. Events corresponding to state changes are expressed internally as specific ProcessEvent objects, and to the outside world as an XML document.

Provenance of the data is recorded and stored in the form of RDF statements about data objects identified by the LSID scheme. We have not yet fixed the interface for the storage of these data, or access to the LSID authority to acquire IDs.