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. 2025 Aug 27;14(17):3004. doi: 10.3390/foods14173004
Algorithm 18 Cold-Chain Performance Analytics Contract
  •   1:

    Define struct PerformanceMetrics

  •   2:

        Fields: shipmentID, spoilageRate, energyEfficiency, costSavings, timestamp

  •   3:

     

  •   4:

    Define mapping(address ⇒ PerformanceMetrics) performanceRecords

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  •   6:

    function recordPerformanceData(shipmentID, spoilageRate, energyEfficiency, costSavings)

  •   7:

       Validate sender’s authorization

  •   8:

       Store performance metrics in blockchain

  •   9:

       Emit event PerformanceDataLogged(shipmentID)

  • 10:

    end function

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  • 12:

    function getPerformanceMetrics(shipmentID)

  • 13:

          Retrieve and return performance metrics

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    end function

  • 15:

     

  • 16:

    function compareLogisticsEfficiency(shipmentID1, shipmentID2)

  • 17:

          Retrieve performance data of both shipments

  • 18:

          Compute efficiency comparison

  • 19:

          Return comparative analysis

  • 20:

    end function