IoT Data storage method using block chain based IoT platform

摘要

The data storage method using the blockchain-based IoT platform according to the present invention comprises the steps of connecting the IoT device and the user APP in a data storage method that configures the blockchain as a database server and applies it to the IoT platform to prevent forgery of data. (S100); Transmitting, by the device, the value, wallet address, and data that signed the secret key of the device to the IoT platform (S200); A step in which the IoT platform finds a user wallet address matching the wallet address of the device in the database (S300); The IoT platform calling an API function using JSON-RPC and passing the value to a blockchain network (S400); The network operates with the contents written in the smart contract and stores data in a block (S500); Passing a user''s own wallet address and data condition values desired by the user to the IoT platform (S600); Passing the user''s own wallet address, the device status change value, and the secret key signed value to the IoT platform (S700); The IoT platform changes the state of the device to the received device state change value, and then calls an API function to deliver the state value to the blockchain network (S800) and the blockchain network is written in the smart contract It characterized in that it comprises a step (S900) of storing the state value in the block by operating as a value.