diff --git a/hip2022/hip2022.tex b/hip2022/hip2022.tex
index 21098a6..8bbad3f 100644
--- a/hip2022/hip2022.tex
+++ b/hip2022/hip2022.tex
@@ -3,11 +3,16 @@
 \usepackage{appendixnumberbeamer}
 \usepackage{amsmath}
 \usepackage{multimedia}
+\usepackage{wrapfig}
 \usepackage[utf8]{inputenc}
 \usepackage{framed,color,ragged2e}
 \usepackage[absolute,overlay]{textpos}
 %\definecolor{shadecolor}{rgb}{0.8,0.8,0.8}
+\usetheme[progressbar=frametitle]{metropolis}
 \setbeamertemplate{navigation symbols}{}
+\setbeamersize{description width=1em}
+\setbeamertemplate{section in toc}[sections numbered]
+\setbeamertemplate{footline}{}
 \usepackage{xcolor}
 \usepackage[normalem]{ulem}
 \usepackage{listings}
@@ -22,21 +27,9 @@
 \usetikzlibrary{positioning,patterns}
 \usetikzlibrary{calc}
 
-\usetheme[progressbar=frametitle]{metropolis}
-\setbeamersize{description width=1em}
 \usepackage{fontspec}
 \setsansfont{IBM Plex Sans}
 
-%\setbeamertemplate{footline}{
-%    \hbox{%
-%    \begin{beamercolorbox}[wd=\paperwidth,ht=3ex,dp=1.5ex,leftskip=2ex,rightskip=2ex]{page footer}%
-%        \usebeamerfont{title in head/foot}%
-%        \insertshorttitle \hfill
-%            \insertsection \hfill
-%        \insertframenumber{} / \inserttotalframenumber
-%    \end{beamercolorbox}}%
-%}
-
 \definecolor{blue}{rgb}{0,0.4,1}
 \newcommand{\orange}[1]{{\color{orange}#1}}
 \newcommand{\TODO}[1]{\orange{TODO: #1}}
@@ -63,17 +56,41 @@
 \end{frame}
 
 \begin{frame}{Chapters}
-	\begin{enumerate}
-		\item \TODO{something something}
-	\end{enumerate}
+	\tableofcontents
 \end{frame}
 
-\section{Introduction}
+\section{Prolog}
 
 \begin{frame}{Who am I}
-	\TODO{who am i}
+	Özgür Kesim,
+	\begin{itemize}
+		\item security consultant for 20+ years,
+		\item PhD candidate at FU Berlin,
+		\item software developer,
+		\item member of GNU Taler dev-team.
+	\end{itemize}
+
+
+	\url{@oec@mathstodon.xyz}
 \end{frame}
 
+\begin{frame}{Sponsors}
+	\centering\begin{columns}[T]
+		\column{0.5\textwidth}
+		\centering NGI Pointer program of the European Commission\\[2em]
+
+		\centering\includegraphics[width=0.7\textwidth]{images/ngi-ap3.png}
+
+		\column{0.5\textwidth}
+		\centering Project \textit{Concrete Contracts} in the
+		\textit{KMU-innovativ} programm\\[2em]
+
+		\centering\includegraphics[width=0.9\textwidth]{images/bmbf-english.jpg}
+	\end{columns}
+\end{frame}
+
+\section{Introduction -- Age Restriction as Challenge}
+
 \begin{frame}{Age restriction in E-commerce}
 
 	\begin{description}
@@ -132,20 +149,20 @@ with the following goals:
 
 \end{frame}
 
-
-\section{Age Restriction}
+\section{Age Restriction as Functional Equation}
 
 \begin{frame}{Age restriction}
 	\framesubtitle{Assumptions and scenario}
 
+	Assumption: Bank accounts are under control of eligible adults/guardians.
+
 	\begin{columns}
 		\column{7.5cm}
 	\begin{itemize}
-		\item<1-> Assumption: Checking accounts are under control of eligible adults/guardians.
 		\item<2-> \textit{Guardians} \textbf{commit} to an maximum age
 		\item<3-> \textit{Minors} \textbf{attest} their adequate age
 		\item<4-> \textit{Merchants} \textbf{verify} the attestations
-		\item<5-> Minors \textbf{derive} age commitments from existing ones
+		\item<5-> \textit{Minors} \textbf{derive} age commitments from existing ones
 		\item<6-> \textit{Exchanges} \textbf{compare} the derived age commitments
 	\end{itemize}
 		\column{5cm}
@@ -535,7 +552,7 @@ Searching for functions \uncover<2->{with the following signatures}
 	\end{description}
 \end{frame}
 
-\section{Solution/Instantiation}
+\section{A Solution}
 
 \begin{frame}{Solution: Instantiation with ECDSA}
 %	\framesubtitle{Definition of Commit}
@@ -708,6 +725,8 @@ Searching for functions \uncover<2->{with the following signatures}
 	}
 \end{frame}
 
+\include{gnu}
+
 \begin{frame}{Integration with GNU Taler}
 	\framesubtitle{Binding age restriction to coins}