\documentclass[12pt,a4paper]{article}

\usepackage[cm]{fullpage}
\usepackage{amsthm}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{xspace}
\usepackage[english]{babel}
\usepackage{fancyhdr}
\usepackage{titling}
\renewcommand{\thesection}{Exercise \Alph{section}:}

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% This part needs customization from you %
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% please enter your group number your names and matriculation numbers here
%TODO
\newcommand{\groupnumber}{Our group number}
\newcommand{\name}{Our names}
\newcommand{\matriculation}{Our matriculations, same order as the names}

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%           End of customization         %
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\newcommand{\projnumber}{1}
\newcommand{\Title}{Analysing the Blockchain}
\setlength{\headheight}{15.2pt}
\setlength{\headsep}{20pt}
\setlength{\textheight}{680pt}
\pagestyle{fancy}
\fancyhf{} 
\fancyhead[L]{Cryptocurrencies - Project \projnumber\ - Analysing the Blockchain}
\fancyhead[C]{}
\fancyhead[R]{\name}
\renewcommand{\headrulewidth}{0.4pt}
\fancyfoot[C]{\thepage}


\begin{document}
\thispagestyle{empty}
\noindent\framebox[\linewidth]{%
 \begin{minipage}{\linewidth}%
 \hspace*{5pt} \textbf{Cryptocurrencies (WS2021/22)} \hfill Prof.~Matteo Maffei \hspace*{5pt}\\

 \begin{center}
  {\bf\Large Project \projnumber~-- \Title}
 \end{center}

 \vspace*{5pt}\hspace*{5pt} \hfill TU Wien \hspace*{5pt}
\end{minipage}%
}
\vspace{0.5cm}
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\section*{Group \groupnumber}
Our group consists of the following members:
\begin{center}
\textbf{\name} %please fill the information above

\matriculation %please fill the information above
\end{center}

\section{Finding invalid blocks}
% Fill here your answers for exercise A 

\section{UTXOs}
% Fill here your answers for exercise B

\section{De-anonymization}
% Fill here your answers for exercise C

\section*{Work distribution}
%Fill in here an overview on which group member participated in which task and to which extent

\end{document}

