Civitai just making sure this got noticed. It kinda got buried beneath all the other bug reports since it's one of the earlier bugs reported on canny.

Another recent one is v4 of this model: https://civitai.com/models/14016?modelVersionId=89678

I've run into more models that have this problem. This causes problems while trying to use the API and makes the API unreliable for searching by hash. I'm not sure if the hash is disappearing after the upload, or if there's an issue where the hash process is sometimes skipped during file uploads. Either way after the bug is fixed someone should probably run a job to hash any files that are missing a hash

I found this happening to a couple of my models. The issue was solved by re uploading the file. I noticed the image card was not downloaded by the civitai extension and when checking the model the Checksum was missing. While not a huge problem it is unknown how many models are missing their checksum.