Board Thread:General Discussion/@comment-26439067-20181214234907/@comment-1038387-20181215061056

It's highly unlikely they perform a checkuser at the request of a user.

Short version: you're screwed. Admins can block for whatever reason they see fit, including reasons you think re wrong. There is no formal appeals process except talking to the admin that blocked you on their wall here on Community Central.

See these for some more info:
 * User blog:Sannse/How to Get Unblocked
 * User blog:Sannse/How You Can Work Through an Admin Dispute