The final project he worked on involved large sculptures for the "Güven Anıtı" (translated as security or trust - literally, "Confidence Monument") in Ankara, which was proposed and initiated in 1931 by Clemens Holzmeister. It was left unfinished at the time of Hanak's death and was completed by Josef Thorak in 1936. The monument has since been damaged twice; by graffiti during the Gezi Park protests (2013), and by shrapnel during the attempted coup in 2016.