First do some research on the NRS. If you have made the choice to carry then you should have already been aware of the questions you asked. This is going to sound harsh and it is. Why would you be doing something that could land you in jail? Why would you not find all the info first?
Second since you are not in Clark Co there is no blue card, there is no NV state registration.
Third as long as you are legal to own a firearm carry away in the open.
Who told you your firearm had to be registered if you had a CCW? I know what they meant but it is not registration.