Hi all,

One of the suggestions in today’s call for the OpenChain Telco SIG, where we’re discussing proposals for an SBOM standard for the Telecommunications industry, was:

> SBOMs conforming to the Telco SBOM Specification need to contain the information when the SBOM was created in the “Created” SPDX field and at what phase of the software build it was created (“pre-build”, “build-time” or “post-build”) in the CreatorComment SPDX field.

(See https://github.com/OpenChain-Project/Telco-WG/pull/15)

I raised a concern about ambiguity here, in that your application may be built from libraries that are built at an earlier stage, so the SBOM information may be created after some components are built, but before others. A recipient of the SBOM might also interpret each of these three phrases differently from the creator of the SBOM. I recall hearing that there have been conversations about many different SBOMs according to phase (source SBOM, build SBOM, deploy SBOM, cloud SBOM, etc.), so I wondered whether there was advice that the Telco SIG could lean upon, rather than trying to formulate a solution when it’s already a solved problem.

Apologies if this isn’t the right group.

steve