Abstract: Disclosed is a method for storing data performed by a server including at least one processor.

Abstract: An exemplary embodiment of the present disclosure discloses a method of calculating a freshness score of a food ingredient, the method being performed by a server including at least one processor. The method may include: receiving food ingredient information about food ingredients loaded into a moving object from a user terminal; receiving environment information about an environment inside the moving object from the user terminal, the environment information including at least one of temperature data obtained by measuring a temperature inside the moving object and humidity data obtained by measuring humidity inside the moving object; calculating a freshness score of the food ingredient based on the food ingredient information and the environment information; and generating monitoring information to be provided to the user terminal by using the calculated freshness score.

Abstract: A computer program stored in a computer readable storage medium includes commands which cause a processor of a node included in the blockchain network to execute steps. The steps comprising: recording at least a first transaction in a transaction table and a first body table when at least one first transaction occurs; generating header information for at least the first transaction when a preset condition is satisfied; recording the header information in a header table; and transmitting a signal including the first transaction and the header information to at least one node included in the blockchain network so that the first transaction is recorded in a second body table of each of a plurality of nodes included in the blockchain network and the header information is recorded in the second header table of each of a plurality of nodes included in the blockchain network.