https://stability.ai/stablediffusion-terms-of-service#:~:tex...
Obviously this could change in the future.
I mean, given a set of prompts (text) to a specific engine, will the same set of prompts on the same engine after - say - one week produce a same image?
Or in the meantime changes on the data set or whatever will generate a different image?
It wouldn't be much different from copyrighting a short poem or the lyrics of a song.
Even if ipfs and cloudflare loose your jpg, as long as civ is humming, and SD is runnable somewhere, your art will live. Forever