the last known mi­cro­pub at­tempt­ed by own­y­ourche­ckin (Sun, 03 Apr 2016 04:02:38 GMT), was ser­ved with a 500 er­ror by your mi­cro­pub end­point. un­fort­u­na­te­ly i can’t see any­thing else in the logs. what it seems that the own­y­ourche­ckin mi­cro­pub ser­ver has pro­blems tal­king to the word­press mi­cro­pub im­ple­men­ta­ti­on. have you tried own­y­our­gram? the own­y­ourche­ckin code is ba­sed on that, so if own­y­our­gram works, i should be able to fix it.