--- a/hws/hw08.tex	Thu Oct 13 12:08:22 2016 +0100
+++ b/hws/hw08.tex	Mon Oct 17 13:40:45 2016 +0100
@@ -10,7 +10,7 @@
 % validate a fraudulent transaction by her? Give a short explanation
 % for your reasoning.  
 
-\section*{Homework 8}
+\section*{Homework 7}
 
 \begin{enumerate}
 \item How can the hardness of the proof-of-work puzzles in