This article will give you an overview of the blockchain basics, transactions, and blocks. In the previous article of this series, we looked at how to create your own token using Solidity and, specifically, events for transactions. Blockchain Basics Blockchain technology enables us to write programs without having to think about the details of the … Read more
As you know, Web3 is a new online era that differs from Web2 in its foundational technology, the blockchain. Blockchain is a disruptive technology characterized by being a decentralized solution for communication and transactions. Decentralization means that there are no controlled databases by third-party service providers. These providers can own and hold your accounts or … Read more
The word Decentralized Finance or DeFi is now almost synonymous with the word blockchain, as DeFi is one of the largest and the most in-demand skills in the blockchain space. In this post, we start by getting to know what DeFi is, how DeFi works and the key concepts behind DeFi. This is part 1 … Read more
In this article, I am going to explain the fundamentals of a Solidity source file structure. In a way, a rookie (like me and you) can understand the basics of Ethereum programming. First things first – the Solidity file that stores your code will have a .sol extension. Take action. In your favorite browser go … Read more
In this first article in the series, we’ll start with the basics of what Solidity is, what smart contracts are, how they work, how they are implemented, and then dig right into some cool Solidity examples and details. Terminology Of course, the first question poses itself: what is Solidity? As you could have imagined, Solidity … Read more
Step 1: Get Started In this first article in the series, we’ll start with the basics of what Solidity is, what smart contracts are, how they work, how they are implemented, and then dig right into some cool Solidity examples and details. Of course, the first question poses itself: What is Solidity? As you could … Read more
Do you have written a decentralized app (dApp) and you want to check it for potential exploits and hacks? Do you need to prepare your dApp for a security audit and vulnerability analysis? Don’t worry, we have your back! 🛡️ In this article based on the smart contract security course by Finxter Creator Yogesh, we’ll … Read more
What are Polygon and MATIC all about and why is another blockchain needed? You will find answers to these questions in this article. The article starts with problems plaguing Ethereum, workable solutions to the problem, and then dives into more details of the Polygon network, its history, tokenomics, and an overview of the Polygon SDK. … Read more
This is part 8 and a continuation of the Smart Contract Security Series. Ownership Exploit Private Variable Exploit Reentrancy Attack tx.origin Phishing Attack Denial of Service Attack Storage Collision Attack Randomness Attack Replay Attack This post provides insights into the replay attack in blockchains. As per the wiki, a replay attack is a valid data … Read more
DeFi (or “decentralized finance”) is a term used to refer to financial services transacted on public blockchains. DeFi is permissionless and open to all. Transactions are routed through a decentralized network or blockchain. DeFi applications provide many of the same services provided by traditional banks such as lending, borrowing, trading, to mention just a few. … Read more
The post is part 6 and continues our Smart Contract Security Series: Ownership Exploit Private Variable Exploit Reentrancy Attack tx.origin Phishing Attack Denial of Service Attack Storage Collision Attack Randomness Attack Replay Attack The DelegateCall attack or storage collision is expounded in this post. Before you can grasp this exploit, you must first understand how … Read more
This post is part 5 of our Smart Contract Security Series: Ownership Exploit Private Variable Exploit Reentrancy Attack tx.origin Phishing Attack Denial of Service Attack Storage Collision Attack Randomness Attack Replay Attack The post discusses the Denial of Service or alias the DoS attack. The Denial of Service (hence referred to as DoS) restricts legitimate … Read more