ACEScg How to determine if an image was baked with Utility-sRGB-Texture?

As an experiment, I baked two sets of textures in SP for one model as a test for UE.

The Format for both sets is PNG 8bit. One set is under OCIO ACEScg 1.2 and the other set is a simple sRGB.

Basically, the only difference between them is in the COLOR ones as expected. And the name flags of course.

My question is:

In a hypothetical scenario where I receive an image/map with no flags.
How to know if a map/image that has no name flags was baked/color mapped under the ACEScg curve?

In other words: How to determine if an image was baked with Utility-sRGB-Texture???

#ACEScg #ACES #UE4 #UE5-0 #UE4-27