 Before this identification, a number of his paintings had been attributed to Jan van Eyck, but became identified with Christus after Waagen established him as a distinct and separate master.Christus is known to have signed six extant works, sometimes with the text "PETR XPI ME FECIT" ("Petr Xpi made me").Over the next century sketches of Christus' biography were constructed, as art historians – notably Panofsky – slowly disentangled his works from those of van Eyck.