diff --git a/eipsi2024/eipsi2024.tex b/eipsi2024/eipsi2024.tex
index fa587d1..d56babb 100644
--- a/eipsi2024/eipsi2024.tex
+++ b/eipsi2024/eipsi2024.tex
@@ -318,7 +318,7 @@ with the following properties:
 
 \begin{frame}{Helpful figure}
 	\small
-	\begin{columns}[t]
+	\begin{columns}
 	\column{0.25\textwidth}
 	Commit:\\[1em]
 
@@ -723,7 +723,7 @@ Searching for functions \uncover<2->{with the following signatures}
 	that meet the basic and security requirements.
 \end{frame}
 
-\section*{A solution}
+\section*{A solution to our quest}
 
 
 \begin{frame}{Instantiation with ECDSA}
@@ -767,6 +767,8 @@ Searching for functions \uncover<2->{with the following signatures}
 \begin{frame}{Attest and Verify with ECDSA}
 	\begin{columns}
 	\column{0.2\textwidth}
+	\includegraphics[width=1.1\textwidth]{images/commit.pdf}
+
 	\includegraphics[width=1.1\textwidth]{images/attest-verify.pdf}
 	\column{0.8\textwidth}
 	\small
@@ -967,7 +969,8 @@ Searching for functions \uncover<2->{with the following signatures}
 	\uncover<2->{
 	\begin{itemize}
 		\item Coins are public-/private key-pairs $(C_p, c_s)$.
-		\item Exchange \hyperlink{fr:reminderBlindSignature}{blindly signs} $H(C_p)$ with denomination key $d_p$
+		\item Exchange \hyperlink{fr:reminderBlindSignature}{blindly signs} $H(C_p)$ with denomination key $d_p$:
+			\[ \beta(\sigma_p) = \mathsf{BlindSign}\big(\beta\left(H(C_p)\right), d_p \big)\]
 		\item Verification:
 		\begin{eqnarray*}
 			1  &\stackrel{?}{=}&
@@ -983,10 +986,10 @@ Searching for functions \uncover<2->{with the following signatures}
 	\label{fr:bindingToCoins}
 
 	To bind an age commitment $\commitment$ to a coin $C_p$, instead of
-	blindly signing \[ H(C_p), \]
-	$\Exchange$ now \hyperlink{fr:reminderBlindSignature}{blindly signs}
-	\[ H\left(C_p\parallel\orange{H(\commitment)}\right) \]
-
+	blindly signing $H(C_p)$
+		\[ \beta(\sigma_p) = \mathsf{BlindSign}\big(\beta\left(H(C_p)\right), d_p \big)\]
+	$\Exchange$ now \hyperlink{fr:reminderBlindSignature}{blindly signs $H(C_p \parallel \orange{H(\commitment)})$}
+		\[ \beta(\sigma_p) = \mathsf{BlindSign}\big(\beta\left(H(C_p\parallel\orange{H(\commitment)})\right), d_p \big)\]
 	\vfill
 	Therefore, verfication of a coin now requires $H(\commitment)$, too:
 	\[
@@ -1044,7 +1047,7 @@ Searching for functions \uncover<2->{with the following signatures}
 \section{Discussion \& Conclusion}
 
 \begin{frame}{Discussion}
-	Technical Aspects and Challenges
+	Technical aspects and challenges
 	\begin{itemize}[<+->]
 		\item Our solution can in principle be used with any token-based payment scheme
 		\item[] However, GNU Taler best aligned with our design goals
@@ -1078,7 +1081,7 @@ Searching for functions \uncover<2->{with the following signatures}
 		\item Attribute-based approach lacks support:
 			\begin{itemize}
 				\item Complex for consumers and retailers
-				\item Requires trusted third authority
+				\item Requires trusted additional authority
 			\end{itemize}
 		\vfill
 		\item Other approaches tie age-restriction to ability to pay ("debit cards for kids")
@@ -1123,13 +1126,14 @@ Searching for functions \uncover<2->{with the following signatures}
 		\texttt{@oec@mathstodon.xyz}
 	\vfill
 	{Interested in GNU Taler?}
-	\begin{description}
-		\item[Intro:] \url{https://taler.net},
-		\item[Learn:] \url{https://docs.taler.net}
-		\item[Develop:] \url{https://git.taler.net}, \url{https://bugs.taler.net}
-		\item[Connect:] \url{https://ich.taler.net}
-		\item[NGI Taler:] \url{https://ngi.taler.net}
-	\end{description}
+
+	\begin{tabular}{rl}
+		\textbf{Intro:}&\url{https://taler.net}\\
+		\textbf{Learn:}&\url{https://docs.taler.net}\\
+		\textbf{Develop:}&\url{https://git.taler.net}, \url{https://bugs.taler.net}\\
+		\textbf{Connect:}&\url{https://ich.taler.net}\\
+		\textbf{NGI Taler:}&\url{https://ngi.taler.net}
+	\end{tabular}
 	\end{center}
 \end{frame}