Sorry but you'll have to send a 1 NXT tx from that address to really prove it's yours. Screenshot looks fishy.
sent 1 NXT to NXT-Q9PM-KGDC-SNXJ-EXE5G 14343293611098709683 Transaction ID:5301464107902294586
NXT-KWVK-QRFJ-589B-BSY4C 10739916011970556785
