What is the name of the script written on the ring of LOTR trilogy?

not tengwar, sindarin or quenya. specifically the one that was written on the ring.What is the name of the script written on the ring of LOTR trilogy?
It's called Old Elvish, according to what Gandalf tells Frodo in ';Fellowship of the Ring';What is the name of the script written on the ring of LOTR trilogy?
The inscription of the One Ring was written entirely in the ';Black Speech'; of Mordor. Sauron created the Black Speech, as an artificial language, to be the sole language of all the servants of Mordor, replacing the many different varieties of Orkish and other languages used by his servants.





The only example given of ';pure'; Black Speech is the inscription upon the One Ring:





Ash nazg durbatul没k, ash nazg gimbatul,


ash nazg thrakatul没k, agh burzum-ishi krimpatul.





When translated into English, these words form the lines:





One Ring to rule them all, One Ring to find them,


One Ring to bring them all, and in the darkness bind them.





For more on this, see the links below;
All I know is that it was Tolkein's version of Elvish. And it said something along the lines of ';one ring to rule them all, one ring to find them; one ring to bring them all and in the darkness bind them.';