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?
because someone is more likely to find 66 before 67 he doesnt wanna spend a shit ton of time on 66 and someone find it before him so he does 67 by time someone does find 66 he will be at head start( to most people anyway ) thats what i think at least