Break long function in two and other improvements

1 files changed, 119 insertions, 0 deletions

diff --git a/docs/presentation.tex b/docs/presentation.tex
new file mode 100644
index 0000000..083d228
--- /dev/null
+++ b/docs/presentation.tex
@@ -0,0 +1,119 @@
+\documentclass{beamer}
+
+\usetheme{default}
+ 
+\usepackage{tikz}
+\usetikzlibrary{positioning}
+
+\title{Depolymerization WIP}
+\subtitle{TODO}
+\author{TODO}
+\institute{TODO}
+\date{\today}
+
+\begin{document}
+
+\begin{frame}
+    \titlepage
+\end{frame}
+
+\begin{frame}{Outline}
+    \tableofcontents
+\end{frame}
+
+\begin{frame}{Introduction}{Blockchain}
+    \begin{block}{Common blockchain limitation}
+        \begin{itemize}
+            \item \textbf{Slow} limited amount of transaction per seconds
+            \item \textbf{Delayed} block and confirmation delay
+            \item \textbf{Expensive} transaction fees
+            \item \textbf{Privacy} pseudonym and noise
+            \item \textbf{Compatibility} multiple blockchain and transactions format
+        \end{itemize}
+    \end{block}
+
+    \begin{block}{Biggest cryptocurrencies}
+        \begin{itemize}
+            \item \textbf{BTC} Bitcoin
+            \item \textbf{ETH} Ethereum
+        \end{itemize}
+    \end{block}
+\end{frame}
+
+\begin{frame}{Introduction}{Related work}
+    \begin{block}{Centralization - Coinbase's off-chain sending}
+        \begin{itemize}
+            \item [$+$] Fast and cheap: off chain transaction
+            \item [$-$] Trust in Coinbase: privacy, security \& transparency
+        \end{itemize}
+    \end{block}
+    \begin{block}{Layering - Lightning Network}
+        \begin{itemize}
+            \item [$+$] Fast and cheap: off chain transaction
+            \item [$-$] Incompatible with Bitcoin: require setting up a Bidirectional Payment Channels
+            \item [$-$] Fraud attempts are mitigated via a complex penalty system
+        \end{itemize}
+    \end{block}
+\end{frame}
+
+\begin{frame}{Introduction}{Taler}
+    \begin{itemize}
+        \item [$-$] Trust exchange operator or auditors
+        \item [$+$] Fast and cheap, no blockchain
+        \item [$+$] Privacy when it can, transparency when it must (avoid tax evasion and money laundering)
+        \item [$+$] Currency agnostic
+    \end{itemize}
+\end{frame}
+
+\begin{frame}{Architecture}{Taler bridge to blockchain}
+    \begin{center}
+        \begin{tikzpicture}[
+                rect/.style={rectangle, draw=black},
+                sym/.style={<->, shorten >= 2pt, shorten <= 2pt}
+            ]
+            \node[rect](1) {Taler};
+            \node[rect, right= of 1](2) {Depolymerization};
+            \node[rect, right= of 2](3) {Blockchain};
+
+            \draw[sym] (1) -- (2);
+            \draw[sym] (2) -- (3);
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Architecture}{depolymerization}
+    \begin{center}
+        \begin{tikzpicture}[
+                rect/.style={rectangle, draw=black},
+                sym/.style={<->, shorten >= 2pt, shorten <= 2pt}
+            ]
+            \node[rect](1) {Taler};
+            \node[rect, below= of 1](2) {wire\_gateway};
+            \node[rect, right= of 2](3) {PostgreSQL};
+            \node[rect, right= of 3](4) {btc\_wire};
+            \node[rect, above= of 4](5) {bitcoind};
+
+            \draw[sym] (1) -- node [midway, right] {\tiny HTTP} (2);
+            \draw[sym] (2) -- node [midway, above] {\tiny SQL} (3);
+            \draw[sym] (3) -- node [midway, above] {\tiny SQL} (4);
+            \draw[sym] (4) -- node [midway, left] {\tiny RPC} (5);
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{btc\_wire}{Architecture}
+    Three loops
+    Watcher: Notify other loops when a new block has been mined
+    Analyzer: Analyse blockchain to adapt defensively
+    Worker: Sync chain -> Send -> Bounce
+\end{frame}
+
+\begin{frame}{btc\_wire}{Features}
+    \begin{itemize}
+        \item Handle stuck transactions
+        \item Fork resilient
+        \item Adaptive confirmation
+    \end{itemize}
+\end{frame}
+
+\end{document}
\ No newline at end of file