How to prove to my friends that i'm telling the truth?

[Audree]

Okay so about a week ago, when I was at school, my friends were talking about how there was someone that was snapchatting them, and the person that was doing that had the username "creepystalker4". Since all of my friends have an iDevice, and I don't, they were able to recieve snaps from this person. They knew that I was able to get social networking accounts by using BlueStacks, which is an app player for your PC that you can use to make accounts such as Instagram, Vine, WeHeartIt, Snapchat, etc. Yesterday, I made a snapchat account to see if I could figure out who creepystalker4 is. But they keep blaming me and saying that I'M creepystalker4 which i'm not. And i'm really not lying. Now only 2 of the 4 girls still thinks it's me. How can I prove to them that it's not? For all I know, it's probably 1 of them trying to push the attention off of themselves and put it on me.