Fuente: Wipo "IOT" The present invention relates to a system for providing a blockchain solution for ensuring the data integrity of a confidential dataset and a processing method thereof. According to the present invention, a method for processing a blockchain for ensuring the data integrity of a confidential dataset comprises: a first step of transmitting sensor data as IoT data; a second step of calculating a hash of the IoT data; a third step of providing a transmission report; a fourth step of performing notification that the transmission report is stored; and a fifth step of confirming the transmission report. According to the present invention, a DDoS attack occurring in an IoT device and an IoT gateway can be defended. COPYRIGHT KIPO 2021