Method of reducing smart contract fee for DApp, and recording medium and compute server for performing the same

A method of reducing smart contract fees for a decentralized application (DApp), the method comprising operations of:

• receiving, by a computation server, a request reception event generated by a smart contract through a request function called from the smart contract by a user;
• storing a parameter of the received request reception event and a public key of the user in a task queue of the computation server;
• checking whether a corresponding request reception event has arrived when the computation server receives a request message containing details of a task to be called by the user;
• performing, by the computation server, a task requested by the user in response to confirmation that the corresponding request reception event has arrived in a certain period of time;
• calling, by the computation server, state change function for the performed task from the smart contract, receiving a transaction result, and then transmitting the transaction result to the user;
• controlling access for the user to check the transaction result transmitted by the computation server and pay, to the smart contract, a fee corresponding to the request reception event through the request function;
• and
• paying, by the computation server to pay, to the smart contract, a fee corresponding to a state change of the smart contract.