I wish I had more information, but nope. Please leave a Comment if you have something. As to whether this is a joke or not, I’ve heard one Intel engineer talk — with a straight face — about using blockchain-based tech to help secure firmware blobs’ supply chain a few months ago, maybe this was what they were talking about… For better or worse, I ignore anything that mentions blockchain technology, maybe I’m missing out in a bunch of legitimate things?
https://www.intel.com/content/www/us/en/security/blockchain-overview.html
Firmware Security 