According to the present invention, the mileage generated through the internet transaction based on the consensus algorithm between the content distributors can be issued and operated in a transparent, safe, and inflation-free cryptocurrency, thereby increasing reliability and security, and having enhanced security and speed. The present invention relates to an e-commerce mileage management method and an e-commerce mileage management system based on the blockchain method that can improve the system operability by performing a smooth transaction. According to the present invention, there is provided a method for managing mileage generated in an electronic commerce, comprising: a content distributor setting up a plurality of content distributors for selling predetermined content; A coin management step of managing mileage coins generated by the transaction between the user and the content vendor; A multi-signature execution step of executing a multi-signature for providing mileage coins through the content retailer and a coin manager when the mileage coin is requested to the content retailer according to a user's purchase of content; And when the multi-signature for the mileage coin is confirmed in the multi-signature execution step, the transfer step of transferring the mileage coin to the user's electronic wallet; provides an e-commerce mileage management method comprising a.
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