System and method for determining data duplication based on blockchain

Abstract

The present invention relates to a system and a method for determining whether uploaded data is duplicated and preventing the distribution of duplicated data when a data provider uploads data in a platform for trading data. One embodiment of the present invention comprises: an extraction module for calculating a hash value by inputting a data set or individual data included in the data set to a hash function; an analysis module for checking whether a data or individual data set to be uploaded is duplicated by comparing whether the hash value calculated by the extraction module is the same as a hash value stored in a blockchain; and a determination module for selecting a hash value of the data set or individual data checked as not being duplicated by the analysis module.