For half a year I use my cpu to scan for the #67 puzzle. I am 0.000039% scanned addresses of the range ;( A lifetime more to wait. I wonder how many supercomputers out there scan the bitcoin chain for these keys every minute. If you remember the pipeline hack, the FBI had already the privkey for the address used and it was not obtain during a hack or seize.
But Why the 67th puzzle ?.. why not the easier one? I mean the amount of private keys in 66 is unbelievably enormous already .. why go for the double of that gigantic range?