Sounds like what you really want is tether, its a digital currency that runs on the blockchain fixed to the US$.
That is the only way to guarantee you have the same value later on as what you put in or received.
I was also finding the same solution as OP but Tether how i can believe this coin if any dump happens will that able to hold the same value and how about its growth if it fixed to same value why should investors invest on this??.