Block chain electronic coupon marking method and system based on information flow parallel connection

The invention provides a block chain electronic coupon marking method and system based on information flow parallel connection. The method comprises the steps: obtaining a first electronic coupon set; classifying the first electronic coupon set to obtain a first classification result; obtaining a first central service item feature; according to the first center service item feature and the first classification result, respectively obtaining a correlation degree between each category in the first classification result and the first center service item feature; performing parallel sorting on each category in the first classification result to obtain a first parallel category sequence; for the first parallel class sequence, performing distributed storage on the electronic coupons of each class according to a block chain to obtain a first distributed storage result; and obtaining a first marking result. The technical problems in the prior art that the utilization rate of the electronic coupons is low and full-per