If it is a black or red stamp be carefull because the color will smear. I have not had any problems with removing the stamps off of my SSS discs but I havent tried removing black because i dont want it to smear. I removed red off of white sss and there is a very slight pink tint to them now.
I always soak the disc in a pan upside down for a minute and then use TP that has been soaked in acetone to wipe the rest of the stamp off. I also try to turn the TP to a fresh clean side if the disc has a large stamp.
Destroyer, Firebird, Teebird, Valkryie, FLX Drone, Buzzz, Impact and Warlock