The important part of this blog post: Please make sure to upgrade to BcContainerHelper 1.0.18 or reconfigfure the timestampServer in your existing version.

December 30th 2020 we got a number of apps for validation failing due to a wrong timestamp signature. Some partners discovered this before submitting and filed an issue on github here, complaining about this error: “The timestamp signature and/or certificate could not be verified or is malformed.“

I was enjoying a nice walk in the forest with my dogs, but my phone would reveal increased activity on github and emails from partners running into this strange issue.