Hacking way to check if .iso is wiiscrubbed?

[xzxero]

is there a way to check if a wii .iso [4.37gb] is already wiiscrubbed?
does wiiscrubber tell you if an .iso is already scrubbed?

 

[Fat D]

the only way to tell whether it is scrubbed or not is to compare the hash with an original, since the disc might have been filled with just FFs or 00s as trash data to begin with.

 

[digitydogs]

He could also compress the iso with winrar and see if the size is dramatically smaller, thats always a sign of a scrubbed iso

 

[xzxero]

He could also compress the iso with winrar and see if the size is dramatically smaller, thats always a sign of a scrubbed iso

yea the thing is i want to know if the .iso is already wiiscrubbed so i dont have to waste time scrubbing then compressing.
just wondering if there is a program or a method of detecting if a .iso is scrubbed and ready to be compressed.