Design and Implementation of Ledger-Based Points Transfer System for IoT Devices in LPWAN

Algorithm 1

Point transfer function

;                  //The number of nodes

;                    //The ledger

     //The candidates of received node ’s update block

Data:, ,

Result:, ,

function transaction_request()

Receive requested transaction from the points transfer terminal;

if is not then

 Send to other nodes;

else

 Receive from other nodes;

end

if is not then

  of in ;

  of in ;

 Calculate candidates of new balances and based on blocks in ;

  and

 fortodo

  ifthen

   Receive as calculated candidate of new balances from other nodes;

  end

 end

 Calculate as a majority vote of ;

 Send approval results to the points transfer terminal;

 ;

 ;

end