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Building an Automatic Payment Protocol on opBNB

In this project, we will implement a simple automatic payment protocol, which is a continuous and automated payment system implemented through smart contracts, so that you no longer have to worry about being owed wages by your boss~

Language

Solidity

Total Length

1.5h

Part of Learning Track

Build on opBNB + 1

What You’ll Learn

Automatic payment protocol based on opBNB test network

opBNB

Automated wage transactions concept

Syllabus

Unit 1 - Course Introduction

In this section, we will introduce what the automatic payment protocol is and implement an ERC20 token as a payment medium.

Unit 2 - Import Dependencies

This section introduces the import of related dependencies and the definition of interfaces.

Unit 3 - Define structures and state variables

In this section, we will introduce the state variables in the automatic payment protocol to better manage the key data in the protocol.

Unit 4 - Project Initialization

In this unit, we will introduce the core functions of the contract and the prerequisite operation for transferring tokens: approve.

Unit 5 - Implement Automatic Payment Functions

In this unit, we will introduce how to implement the automatic payment function, where the payer (Boss) calculates the amount payable in seconds.

Unit 6 - Realize Salary Withdrawal Function

In this unit, we will introduce how to implement the salary extraction function and realize the salary settlement within seconds.