thank you for the reply , well i did what you had to tell me to take the known wif to test my rigs , just need more challenge , it doesnt need 40 strong GPUs to crack only 12 lost wif character with this program , if this coins have an owner , let the owner talk to me and maybe we can make collaboration.
I'm sure if this key was real, the owner would have already found the key by now, there is no evidence suggesting this address corresponds to that WIF.
And I believe there is much more to improve on this tool, as I believe there is a way to up the speed by ten folds.