Go to a commercial finish dealer (paints) and buy the heaviest polyurethane you can get from them. Dip six inches of the rope ends into it and let dry till hard. Epoxy would be just as good. Might be more than you paid for the rope though. Or, just whip the ends with duct tape. I got my rope off craigs also with all the hardware, ends whipped with epoxy for $12. Now all I need is an apparatus to hang it from.
"Lack of sleep makes cowards of us all."