For what it's worth, we still have our internal records of all of his items, they're just marked Abandoned (the technical name for his deletion) and hidden from search results. So if need be, I can pull reports and even filter them based on what has yet to be mirrored. I'm considering reworking the presentation of abandoned claims so it's easier to find stuff like this.

All of his designs are currently still seeded by GunCAD Mirror (lbrynet) instances because they address by file contents, not by who uploaded it. Though that doesn't solve the first problem of having someone recognize that something's missing and commit to posting a claim.

I'm working on making us more resilient, but it's going to take some time.