Is there any way to get the icon from the titleid?

I have seen you have the covers dumped and it's a nice alternative so thanks for that.

But are there any endpoints in the PSN API that could fetch the PS3 games data or the icon?

I know there is something similar for PS4;

https://store.playstation.com/store/api/chihiro/00_09_000/titlecontainer/BE/nl/999/CUSA01163_00
https://store.playstation.com/store/api/chihiro/00_09_000/titlecontainer/BE/nl/999/CUSA01163_00/image

I'm sure you are aware of the above, if not I hope you find some use from it!