Argratha

From Memory Alpha, the free Star Trek reference

Argratha is a planet in the Gamma Quadrant, homeworld to the Argrathi. The planet is governed by the Argrathi Authority. Instead of imprisoning criminals, their legal system punishes offenders by imprinting the convicted with fabricated memories of incarceration.

In 2372, Miles O'Brien visited the planet. (DS9: "Hard Time")