Investigating software artifact provenance

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"Provenance" is a term from the arts that describes a set of evidence concerning the history or ownership of an artistic work. The provenance for a particular object may include trusted documentation, special purpose analyses of the materials and artistic styles, and general historical knowledge. Increasingly, the term is also being used in technical contexts such as in computer security, where the provenance of a third-party component -- often determined through mechanisms such as cryptography and trusted audit trails -- may determine how the component is allowed to access confidential data and the system's run-time environment. However, as software systems become more pervasive, the risk of failure, malware, license violations, and patent lawsuits requires us to be circumspect about where various kinds of software entities come from. We must examine not only executable components, but all development artifacts that impact upon the software system and its creation. We must ask: Where did this class definition, library, feature, bug fix originate? How has it evolved over time? And what is the evidence? That is, we must ascertain the artifact's provenance.