only validate signature above last checkpoint
only validate signature above last checkpoint

still keep track of miners, of course
Anfauglith/iop-hd,Anfauglith/iop-hd,Anfauglith/iop-hd,Anfauglith/iop-hd,Jcing95/iop-hd,Jcing95/iop-hd,Jcing95/iop-hd,Jcing95/iop-hd,Jcing95/iop-hd,Anfauglith/iop-hd,Anfauglith/iop-hd,Jcing95/iop-hd