exchange

Base system with REST service to issue digital coins, run by the payment service provider
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fees-coins.tex (1735B)


      1 \section{Fees per coin} \label{sec:fees:coin}
      2 
      3 Payments with Taler are always made using coins.  Each coin has a specific
      4 denomination, and an exchange will issue coins in different denominations (in
      5 the same currency).  The fees per coin depend on the operation and the
      6 denomination.
      7 
      8 The primary fee to be paid is a {\bf deposit} fee that is
      9 charged whenever a coin is fully or partially deposited
     10 into a bank account or another wallet.
     11 
     12 A secondary fee to be paid is a {\bf change} fee that is
     13 charged whenever a coin partially spent and change must
     14 be rendered.
     15 
     16 Coins also have an {\bf expiration} date of approximately {\bf one year}.
     17 After the expiration date, coins become worthless.  Wallets that are online
     18 {\bf three months} {\em before} a coin expires will automatically trade any
     19 such coins for one or more fresh coins with a later expiration date. This
     20 process is also subject to the {\bf change} fee.
     21 
     22 
     23 \begin{table}[h!]
     24   \caption{Fees per coin. Coin denomination values are given in units of CHF 0.01.}
     25   \label{table:fees:coins}
     26   \begin{center}
     27     \begin{tabular}{l|c|r}
     28       {\bf Denomination} & {\bf Fee type} & {\bf Amount}   \\ \hline \hline
     29      $2^{-4}-2^{ 0}$      & deposit        & {\em CHF 0.00125} \\
     30      $2^{-4}-2^{ 0}$      & change         & {\em CHF 0.00125} \\
     31      $2^{ 0}-2^{ 3}$      & deposit        & {\em CHF 0.00250} \\
     32      $2^{ 0}-2^{ 3}$      & change         & {\em CHF 0.00125} \\
     33      $2^{ 4}-2^{ 8}$      & deposit        & {\em CHF 0.005} \\
     34      $2^{ 4}-2^{ 8}$      & change         & {\em CHF 0.00125} \\
     35      $2^{ 8}-2^{12}$      & deposit        & {\em CHF 0.01} \\
     36      $2^{ 8}-2^{12}$      & change         & {\em CHF 0.00125} \\
     37     \end{tabular}
     38   \end{center}
     39 \end{table}