Fingerprint ID does not work with hashes, you need images. I've worked with NGOs and integrated biometric identification systems.
I haven't had to pull the iris data out but I'm certain they where also stored as bitmap images. In any case, the iris scanners most certainly sent images to us and not hashes. Why send an image if all you need is a hash?
In any case nobody outside can tell what some crypto scam is doing with those scans and I sure wouldn't trust them.