Background With the advancement of web3 technology, numerous projects now encounter a multitude of security-related risks. Concurrently, the blockchain and crypto markets remain vulnerable to various fraudulent schemes. As a response to this situation, I have developed a token-checker tool that aims to validate token addresses using reliable and trustworthy sources. Objectives …

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How do I become a better engineer, indeed? Have you ever asked why our friends succeed than you? Why he/she is your manager? It is the same question I asked myself four years ago. …

All source code for this tutorial is published on Github — What is Remix IDE: Remix is a powerful, open source tool that helps you write Solidity contracts straight from the browser. Written in JavaScript, Remix supports both usage in the browser and locally. Our smart contract: This tutorial will use Provable.sol …

The purpose of this article helps you to understand how to develop basic microservices by using API gateways pattern. 1. Requirements: It doesn’t require you must have experience in microservices before. But I highly recommend you should read to understand some basic concepts. Microservice: A microservice application is a collection of autonomous…

This is the next part of the previous article I wrote before. If you haven’t read it yet, I highly recommend you should read it first. ’Cause I will do a demo based on it. 1. Requirements: This tutorial requires you need to know BloC knowledge. …

In the following tutorial, we’re going to build a Basic Chat App in Flutter which uses blocs to manage state and back4app as the server-side. This video shows a demo when you complete. Want to read this story later? Save it in Journal. Requirements: This tutorial requires you need to…

Basically, the top text will show hint text if user input otherwise it shows nothing. Getting Started Our final code will be: Direction Imagine parameters you want your users to control it. Create Stack layout with 2 widgets: Text and TextField. Listen to events such as onTap onChanged onEditingComplete and focusNodein order to update the top message. Let’s code 1. Parameters:

This is the 1st part of series which include 4 parts Ethereum: all things you must know first Ethereum: your first smart contract Ethereum: deploy your smart contract Ethereum: your first dApp Why we need this part? The first idea started in 2018 when my friend told me that he wanted to know how to…