rank your "uncrackable" software protection

[giv]

For your concern ... what is made by man hands will be "broken" also by mans hand.
So i think is no "uncrackable" protection.
Just hard to bypass or reverse.
It just require lots of knowledge and hard work.
All software protections are down at the moment.
Most of the hardware protections can be emulated, bypassed.
I think the private solutions for the protections exists in every passionate reverser.
Most of the strong protections solutions are kept in private so from here the impresion that a protection is "uncrackable".
I think the discusion is futile.
The thread subject is, IMHO, what is the hardest software protection not "uncrackable".