Electronic transaction system, method and program

A non-transitory computer-readable recording medium storing an electronic transaction program executable by a processor, wherein

• the processor is coupled to a communication interface configured to access a database system and a memory, and
• the electric transaction program is for a system including:
• an order I/F device that transmits order form information of an item including an item identifier;
• and an order processing device that receives the order form information of the item and executes order processing based on the order form information of the item,
• the program causes the processor of the order I/F device to perform operations comprising:
• processing of acquiring the item identifier included in the order form information by taking a picture of a code or a mark provided visibly or invisibly on a medium, and
• processing of acquiring a channel identifier that allows unique identification of a payee of a performance reward from the code or the mark and transmitting the channel identifier to the order processing device.