\documentclass[10pt,twoside,a4]{scrartcl}%
\usepackage{fontspec}%
\setmainfont{DIN Pro}%
\newfontfamily\DinProLight[Ligatures=TeX]{DIN Pro Light}%
\usepackage{polyglossia}%
%\setdefaultlanguage{dutch}%
\DeclareOldFontCommand{\sc}{\normalfont\scshape}{\@nomath\sc}%
\setkomafont{disposition}{\DinProLight}%
\setlength{\parskip}{\baselineskip}%
\setlength{\parindent}{0pt}%
\usepackage[unicode,
pdfauthor={Dylan Meysmans},
pdftitle={Testing the Land Register},
pdfsubject={},
pdfkeywords={},
pdfproducer={},
pdfcreator={}]{hyperref}%
\begin{document}%
\title{Testing the Land Register}%
\author{Dylan Meysmans}%
\date{\today}%
\maketitle%
To test the land register smart contract \texttt{Register.sol}, please use \href{https://remix.ethereum.org/#optimize=true&version=soljson-v0.5.3+commit.10d17f24.js}{the Remix IDE}\footnote{The URI we provide here already sets the proper compiler version and turns on optimization.}.
First add \texttt{Register.sol} to Remix, then perform the following steps to test it out:
\begin{enumerate}
\item Compilation
\begin{enumerate}
\item On the tab marked \textbf{Compile} on the right-hand side, set the current version to \textbf{0.5.3+commit.10d17f24}, if it is not already set.
\item On the same tab, check the box for \textbf{Auto compile} and optionally for \textbf{Enable Optimization}.
\end{enumerate}
\item Execution
\begin{enumerate}
\item On the tab marked \textbf{Run} on the right-hand side, set the \textbf{Environment} to \textbf{JavaScript VM}.
\item On the same tab, select the \textbf{Register} contract and click \textbf{Deploy}. This should cause an instance of the contract to pop up on the bottom of the tab.
\end{enumerate}
\item Registering a land
\begin{enumerate}
\item Still on the \textbf{Run} tab, expand the \textbf{createLand} section for the contract instance.
\item Provide an array of x coordinates (e.g. \texttt{[0, 0, 1, 1]}) and an array of y coordinates (e.g. \texttt{[0, 1, 0, 1]}) marking the borders, the size of the land (e.g. \texttt{1}), and its value (e.g. \texttt{[0, 0, 1, 1]}).
\item For the owner parameter, provide one of the addresses from the \textbf{Account} list on top of the \textbf{Run} tab which you did not use to deploy the contract.
\item Click the \textbf{transact} button.
\item Expand the output of the \texttt{createLand} transaction on the console on the bottom of the window and read the \textbf{decoded output} field in the table to find out the unique code of the land registered. It is necessary to sell the land in the next step.
\end{enumerate}
\item Selling a land
\begin{enumerate}
\item Still on the \textbf{Run} tab, expand the \textbf{sell} section for the contract instance.
\item Provide the code output by the transaction in the previous step for the \textbf{code} parameter.
\item Provide an address from the \textbf{Account} list which you did not use to deploy the contract or as the owner for the land for the \textbf{to} parameter.
\item Provide any positive integer value you like for the \textbf{price} value.
\item Click the \textbf{transact} button.
\end{enumerate}%
\end{enumerate}%
\end{document}%