Algorithm 1: Reward Allocation

[Service Provider publishes an offer token $T_{\mathrm{O}}$] //OrderBook operation. Append $T_{\mathrm{O}}$ to offer listing, $L_{\mathrm{O}}$. [On acceptance of $T_{\mathrm{O}}$ by a participant] Capture $d$ //Generate the public and private components of the One-Time Key. Generate $a_{{\mathrm{K}}_{\mathrm{O}}}$ and $a_{{\mathrm{K}}_{\mathrm{O}}}^{*}$ //Create offer acceptance, $A_{\mathrm{O}}.$ $A_{\mathrm{O}}=\{\{d{\}}_{{\mathrm{b}}_{\mathrm{SP}}}, a_{{\mathrm{K}}_{\mathrm{O}}}, i_{\mathrm{O}}, i_{{\mathrm{A}}_{\mathrm{O}}}\}$ //Participant retains One-Time Key since the private key, $a_{{\mathrm{K}}_{\mathrm{O}}}^{*},$ is used to claim reward. //$[a_{{\mathrm{K}}_{\mathrm{O}}},a_{{\mathrm{K}}_{\mathrm{O}}}^{*}]$ represents the set of One-Time Keys held. $[a_{{\mathrm{K}}_{\mathrm{O}}},a_{{\mathrm{K}}_{\mathrm{O}}}^{*}]$ + = {$a_{{\mathrm{K}}_{\mathrm{O}}},a_{{\mathrm{K}}_{\mathrm{O}}}^{*}$} Publish $A_{\mathrm{O}}$ on OrderBook //OrderBook Operation. $L_{\mathrm{O}}+ = A_{\mathrm{O}}$//Append $A_{\mathrm{O}}$ to $L_{\mathrm{O}}$ Forward $A_{\mathrm{O}}$ to Service Provider //Service Provider Operation. [On receipt of $A_{\mathrm{O}}$] //Decrypt the data submission. Decrypt ${\left\{d\right\}}_{{\mathrm{b}}_{\mathrm{SP}}}$ using $b_{\mathrm{SP}}^{*}$ $v$ = Validate $A_{\mathrm{O}}$ if $v$ then    Log allocation of $R_{\mathrm{O}}$//Make reward allocation.    $T_{\mathrm{V}}={\{i_{\mathrm{V}}, i_{{\mathrm{A}}_{\mathrm{o}}},v\}}_{b_{\mathrm{SP}}^{*}}$    $L_{\mathrm{O}}+ =$ $T_{\mathrm{V}}$ //Append $T_{\mathrm{V}}$ to $L_{\mathrm{O}}$ and publishon OrderBook.    //OrderBook generates and publishes encrypted spendable reward.    $r_s$ $= {\{i_{\mathrm{S}},i_{\mathrm{V}},r_{\mathrm{O}}\}}_{a_{{\mathrm{K}}_{\mathrm{O}}}}$ end if