2023-06-12 18:08:08 +02:00
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\section{Deposit} \label{sec:deposit}
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2023-05-07 17:52:46 +02:00
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\begin{figure}[h!]
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\begin{sequencediagram}
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\newinst{wallet}{\shortstack{Customer wallet \\
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\\ \begin{tikzpicture}
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\node [fill=gray!20,draw=black,thick,align=center] { Unique \\ Wallet ID};
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\end{tikzpicture}
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}}
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\newinst[2]{exchange}{\shortstack{Taler (exchange) \\
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\\ \begin{tikzpicture}[shape aspect=.5]
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\tikzset{every node/.style={cylinder,shape border rotate=90, draw,fill=gray!25}}
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\node at (1.5,0) {\shortstack{{{\tiny Database}}}};
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\end{tikzpicture}
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}}
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2023-07-02 16:09:09 +02:00
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\newinst[2]{bank}{\shortstack{Retail bank \\
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2023-05-07 17:52:46 +02:00
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\\ \begin{tikzpicture}
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\node [fill=gray!20,draw=black,thick,align=center] {Checking \\ Accounts};
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\end{tikzpicture}
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}}
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\postlevel
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\begin{callself}{wallet}{Review deposit fees}{}
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\end{callself}
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\mess[0]{wallet}{Deposit {(Coins)}}{exchange}
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\begin{sdblock}{Acceptable account?}{}
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\mess[0]{exchange}{{Refuse deposit}}{wallet}
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\end{sdblock}
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\begin{sdblock}{KYC/AML required?}{}
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\begin{callself}{exchange}{Figures~\ref{fig:proc:kyc}, \ref{fig:proc:aml}}{}
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\end{callself}
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\end{sdblock}
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% \prelevel
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% \prelevel
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% \begin{sdblock}{User abort?}{}
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% \mess[0]{wallet}{{Request abort}}{exchange}
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% \mess[0]{exchange}{{Abort confirmation}}{wallet}
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% \end{sdblock}
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\mess[0]{exchange}{{Initiate transfer}}{bank}
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\end{sequencediagram}
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2023-07-02 16:09:09 +02:00
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\caption{A customer deposits the coins issued by a Taler exchange (payment
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service provider) into a bank account. Even if the
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bank account is owned by the same customer, the
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KYC checks from Section~\ref{sec:kyc:deposit} apply.}
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2023-05-07 17:52:46 +02:00
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\label{fig:int:deposit}
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\end{figure}
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We do {\bf not} permit the customer to regain control over their funds {\em
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unless} they pass the KYC/AML checks. The technical reason is simply that
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the KYC/AML checks happen {\em after} the aggregation logic and at this point
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refunds are no longer permitted. From a compliance perspective, this also
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prevents malicious customers from risk-free probing of the system.
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