@sally @lucy @meso @sun I expect that anyone who isn't in the United States won't get very far. The NCMEC only serves the US and enforces the specific portions of US law that deals with ESP reporting (which you have to do to remain compliant with the provisions of 18 U.S.C. § 2258A).

Then there's integration into the posting mechanism of instances to hash the uploaded file and compare it, writing something that pulls data out of their API according to their spec into its own DB, doing your initial sync and subsequent deltas daily, it's not that simple. I don't run this on my instance at all, I run it only on Pomf.