Hartog Corper had gone into hiding together with 496723 and three others. They all were arrested on 17 April 1943.
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Hartog Corper died on 7 May 1943 in Westerbork transit camp and he was cremated on 10 May 1943. The urn with his ashes was placed on the Jewish cemetry in Diemen on field U, row 3, grave nr. 16.
Register van joden die in het kamp Westerbork zijn gecremeerd, 1943-1944; archief van de gemeente Westerbork, opgenomen in het archief van de gemeente Midden-Drenthe te Beilen, inv. n 3789
Lijst van in de concentratiekampen Westerbork en Buchenwald overleden Joodsche Personen die op Nederlandsche begraafplaatsen ter aarde werden besteld; NIOD, archief Westerbork, port. 1, map 1