It's GIFCT [0], a database of perceptual content hashes shared between FAANG's for cooperative moderation. It's largely a response to FAANG's PR crisis after several of the live-streaming terrorists. It's a self-regulating industry group and not administered by any government.

(Also misspelled "JFCT" in some of the court transcripts from this case).

[0] https://gifct.org/explainers/ ("Global Internet Forum to Counter Terrorism")