i'm afraid that only the starter of this topic can answer that question and to be honest this doesn't seem like a serious puzzle to me. at least not until he provides a proper signature (the one in OP is missing the message so there is no way to verify it).
that's incorrect. the OP used the post text as the message and it validates.
i tried verifying it yesterday and it didn't verify (using Electrum). however it is possible that i've made a mistake since it is not in code tags which makes the copying a bit weird. i'll try checking it later and if it verified i'll edit my previous post.