Abstract: Software provenance validation reports whether a validation binary matches the source code, resources, and other parts, as well as the compiler, runtime, operating system, and other context, which is specified in a provenance manifest for a release binary. Part context checksums, software versions, tool parameters, and other aspects of a build are checked. Certification signatures, timestamps, certain version differences, source code locations, and other data may be ignored for validation purposes. A provenance manifest may include other provenance manifests, including binary rewrite manifests. The provenance manifest may be stored in a debugger file with symbol information, or stored separately. Partial matches may be reported, with details of what matches or does not match. After provenance of a binary is validated, the binary's source code can be analyzed for vulnerabilities, thereby enhancing software supply chain security.