commit 485e60e4f799ec819d132f91e5cd5641a2d43084
parent cc676a94ff5ed6917afbd9021d59f5c1622b3167
Author: Antoine A <>
Date: Wed, 9 Feb 2022 15:59:02 +0100
presentation: progress
Diffstat:
1 file changed, 44 insertions(+), 19 deletions(-)
diff --git a/docs/presentation.tex b/docs/presentation.tex
@@ -91,7 +91,7 @@
\begin{block}{Taler payment system}
\begin{itemize}
\item Blind signatures (privacy)
- \item Rotate keys every year. Forget previous transactions (Pruning)
+ \item Rotate keys every year, forget previous transactions (pruning)
\end{itemize}
\end{block}
@@ -212,6 +212,32 @@
depolymerizer is comprised.
\end{frame}
+\begin{frame}{Challenges}{Stuck transactions}
+ \begin{center}
+ \begin{tikzpicture}[
+ dot/.style={circle,fill,inner sep=1pt,}
+ ]
+
+ % TODO caption with source (Ychart)
+
+ \node (I) {\includegraphics[width=\textwidth]{media/fee.png}};
+ \only<2->{
+ \node [below left=-2.5mm and -1.5cm of I] (Tx) {\small Tx};
+ \node [dot,above=8.4mm of Tx](D) {};
+ \draw [dotted,thick] (Tx) -- (D);
+ \node [left=-4.5cm of Tx] (C) {\small conf};
+ \node [dot,above=8.4mm of C](D1) {};
+ \draw [dotted,thick] (C) -- (D1);
+ };
+ \end{tikzpicture}
+ \end{center}
+ \only<1>{We want confirmation of transactions within a limited time frame.
+ However, transaction fees are variable, and we can only predict them.}
+ \only<2>{When we send a transaction with a fee too small compared to other
+ transactions, it can take an unlimited amount of time for it to be mined.}
+\end{frame}
+
+
\begin{frame}{Depolymerization}{Architecture}
\begin{center}
\begin{tikzpicture}[
@@ -247,14 +273,14 @@
\begin{frame}{Depolymerization}{Metadata}
\begin{block}{Bitcoin - Withdraw}
\begin{itemize}
- \item Transaction from code
+ \item Transactions from code
\item Only 32B + URI
\item \textbf{OP\_RETURN}
\end{itemize}
\end{block}
\begin{block}{Bitcoin - Deposit}
\begin{itemize}
- \item Transaction from common wallet software
+ \item Transactions from common wallet software
\item Only 32B
\item \textbf{Fake Segwit Addresses}
\end{itemize}
@@ -282,22 +308,24 @@
\draw[-stealth] (wa2) .. controls ([xshift=-0.3cm] wa2.west) and ([xshift=-0.3cm] wa1.west) .. (wa1);
% Analysis loop
- \node[below=5mm of wa2] (at) {Analysis};
+ \node[below=7mm of wa2] (at) {Analysis};
\node[rect, below=1mm of at](a1) {Wait for notification};
\node[rect, below=4mm of a1](a2) {Analyse};
\draw[-stealth] (a1) -- (a2);
\draw[-stealth] (a2) .. controls ([xshift=-0.3cm] a2.west) and ([xshift=-0.3cm] a1.west) .. (a1);
% Worker loop
- \node[rect, below right= -2mm and 1cm of wa1](wo1) {Wait for notification};
+ \node[rect, right= 1cm of wa1](wo1) {Wait for notification};
\node[rect, below=4mm of wo1](wo2) {Synchronize chain};
- \node[rect, below=4mm of wo2](wo3) {Send};
+ \node[rect, below=4mm of wo2](wo3) {Withdraw};
\node[rect, below=4mm of wo3](wo4) {Bounce};
+ \node[rect, below=4mm of wo4](wo5) {Bump};
\node[above=1mm of wo1]{Worker};
\draw[-stealth] (wo1) -- (wo2);
\draw[-stealth] (wo2) -- (wo3);
\draw[-stealth] (wo3) -- (wo4);
- \draw[-stealth] (wo4) .. controls ([xshift=-0.4cm] wo4.west) and ([xshift=-0.4cm] wo1.west) .. (wo1);
+ \draw[-stealth] (wo4) -- (wo5);
+ \draw[-stealth] (wo5) .. controls ([xshift=-0.4cm] wo5.west) and ([xshift=-0.4cm] wo1.west) .. (wo1);
\end{tikzpicture}
\end{center}
\centering
@@ -353,7 +381,7 @@
\end{tikzpicture}
\end{center}
\only<1>{As small reorganisations are common, we apply a confirmation delay
- to handle the most common disturbances and attacks.}
+ to handle most disturbances and attacks.}
\only<2>{If a reorganisation longer than the confirmation delay happens,
but it does not remove deposits, btc-wire is safe.}
\only<3>{If it removed a confirmed deposit a powerful attacker may have
@@ -429,17 +457,16 @@
% TODO caption with source (Ychart)
\node (I) {\includegraphics[width=\textwidth]{media/fee.png}};
- \only<2->{
- \node [below left=-2.5mm and -1.5cm of I] (Tx) {\small Tx};
- \node [dot,above=8.4mm of Tx](D) {};
- \draw [dotted,thick] (Tx) -- (D);
- };
- \only<2>{
+ \node [below left=-2.5mm and -1.5cm of I] (Tx) {\small Tx};
+ \node [dot,above=8.4mm of Tx](D) {};
+ \draw [dotted,thick] (Tx) -- (D);
+
+ \only<1>{
\node [left=-4.5cm of Tx] (C) {\small conf};
\node [dot,above=8.4mm of C](D1) {};
\draw [dotted,thick] (C) -- (D1);
};
- \only<3>{
+ \only<2>{
\node [left=-17mm of Tx] (Tx1) {\small Tx'};
\node [dot,above=15.5mm of Tx1](D1) {};
\draw [dotted,thick] (Tx1) -- (D1);
@@ -450,11 +477,9 @@
};
\end{tikzpicture}
\end{center}
- \only<1>{We want confirmation of transactions within a limited time frame.
- However, transaction fees are variable, and we can only predict them.}
- \only<2>{When we send a transaction with a fee too small compared to other
+ \only<1>{When we send a transaction with a fee too small compared to other
transactions, it can take an unlimited amount of time for it to be mined.}
- \only<3>{You can configure btc-wire to monitor pending transactions and
+ \only<2>{You can configure btc-wire to monitor pending transactions and
bump their fees if they take too much time to be mined.}
\end{frame}
