Programmatically? Not really. There are efforts among the major LLMs and content creation tools to embed digital watermarks in AI generated media. But, especially for 3d games where most of these are textures, that is pretty difficult.
What I do see is a focus on computer vision to identify/isolate assets and then look up the provenance of those. Whether it is ripped out of a different game, part of a commonly available asset pack, or registered as having been made by an LLM. Which I actually would expect Epic to push for (since they have an asset store…) but… yeah.