In 2024, smart contract vulnerabilities led to over $3.5 billion in losses within the blockchain industry, underscoring the critical importance of comprehensive security audits to protect decentralized finance ecosystems. This guide covers 15 smart contract vulnerabilities that every developer must understand:
Blockchain tech is a hive of activity, buzzing with ideas to make it safer and more private for everyone. Two prominent players in this arena
A DeFi smart contract is like an autonomous financial agent built on the blockchain (most commonly Ethereum). It’s written in code (think Solidity) and designed to automatically execute actions when certain conditions are met. No banks, no middlemen. Just trustless code doing exactly what it’s programmed to do.
TL;DR: Smart contracts are self-executing agreements written in code that automatically execute when certain conditions are met. They function on blockchain technology, removing the need
What Are Smart Contracts? Imagine a digital agreement that runs itself once everyone agrees on the terms — that’s a smart contract. These are self-executing
Smart contracts have transformed the execution of digital transactions and agreements by offering a secure, automated, and tamper-proof solution for managing complex workflows. However, their
TL;DR: Smart contracts have become one of the most revolutionary aspects of blockchain technology, especially in decentralized finance (DeFi), digital assets, and automation. These self-executing
Blockchain technology is continuously growing to become one of the most transformative forces in the digital world. In the Ethereum blockchain, transactions and computations involve
In the ever-evolving world of blockchain development, Solidity stands out as the most popular programming language for Ethereum. However, like any other programming language, Solidity
Smart contracts have revolutionized trust, transparency, and automation in decentralized systems. To maintain this trust as blockchain evolves, it’s crucial to test smart contracts before
Web3 security relies heavily on digital signatures to verify the authenticity and authorization of transactions. However, a vulnerability known as signature malleability can pose a
Web3 development thrives on smart contracts – self-executing programs on the blockchain. These contracts are written in high-level languages like Solidity and then compiled into
Web3 promises a democratized financial landscape, but a shadow lurks within its decentralized exchanges (DEXes) – Frontrunning. This exploitative practice leverages knowledge of upcoming transactions
Immutability – the cornerstone of blockchain technology – guarantees that once data is written, it cannot be altered. This concept empowers transparency and trust, making
Decentralization is the cornerstone of Web3, aiming to empower users and reduce reliance on centralized control. However, a common pitfall in Web3 development contradicts this
Exception handling is a crucial aspect of any programming language, and Web3 development with Solidity is no exception. The try-catch block offers a mechanism to
Web3 thrives on innovation, but unlike traditional software, upgrades to deployed smart contracts can be a tricky affair. The very nature of blockchain immutability presents
Web3 thrives on the power of smart contracts – self-executing programs that automate tasks on the blockchain. However, a seemingly minor oversight – unchecked return
Decentralized Finance (DeFi) has revolutionized financial services, offering lending and staking opportunities without the need for intermediaries. However, these protocols are not without their weaknesses.
The world of Web3 is brimming with promises of high returns and revolutionary projects, driving a wave of excitement among investors and developers alike. Yet,
Web3 thrives on user empowerment and the ease of sending and receiving cryptocurrency. However, a growing threat lurks in the shadows: Address Poisoning. This malicious
The lifeblood of Web3 applications often lies in tokens, and ERC token standards provide a common language for creating and interacting with these digital assets
Web3 thrives on the immutability of the blockchain – a guarantee that once data is written, it cannot be altered or erased. This permanence is
Solidity, the preeminent language for writing smart contracts on the Ethereum blockchain, is a powerful tool. But like any powerful tool, it has its quirks
Web3 is ushering in a new era of financial applications, blending traditional finance (TradFi) with decentralized finance (DeFi). Many projects straddle this line, requiring a
Web3 applications represent the cutting edge of decentralization, but they do not operate in isolation. These applications require real-world data to function effectively, and this
Flash loans, a cornerstone of DeFi (Decentralized Finance), offer exciting liquidity possibilities. But in the wrong hands, they can become a developer’s nightmare – fueling
In the realm of Web3, the concept of decentralization is not just a buzzword—it’s a fundamental principle. Decentralized Autonomous Organizations (DAOs) epitomize this ethos, where
In the dynamic and evolving landscape of Web3, randomness plays a crucial role in ensuring the fairness and unpredictability of various applications. From provably fair
In the world of blockchain and smart contracts, security is paramount. However, there’s a fine line between ensuring security and creating rigid, inflexible systems. One
TL;DR In the world of smart contracts, where code governs the execution of transactions and other functions, the importance of proper input validation cannot be
In a traditional transaction, one party sends funds to another in exchange for goods or services. This exchange typically follows a well-defined sequence of steps.
TL;DR A Decentralized Exchange (DEX) allows peer-to-peer trading without intermediaries. To build a basic DEX using Solidity, key components include: Steps to build: Enhancements include
TL;DR: The world of blockchain technology has seen a increase in the development and use of tokens. These digital assets represent ownership, utility, or access
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. From decentralized finance (DeFi) to supply chain management, their potential is undeniable. However, with
The world of blockchain technology is full of new and exciting ideas. Blockchains are great because they are very secure and can’t be easily changed,
Blockchain technology is really innovative, and smart contracts are a big part of that. Smart contracts are like automatic agreements that run themselves, but they
Solidity, the programming language for Ethereum smart contracts, excels at automating tasks and enforcing complex logic within the secure confines of the blockchain. However, smart
Solidity, the programming language powering Ethereum smart contracts, offers robust tools for code reusability. Two key approaches dominate this landscape: inheritance and libraries. While both
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. They offer trust, transparency, and automation in transactions, forming the backbone of Decentralized Applications
TL;DR:Â Solidity, the preeminent language for building smart contracts on the Ethereum blockchain and other platforms, empowers developers to create decentralized applications (DApps) that automate
Smart contracts, the self-executing code on blockchains, have revolutionized various industries. From decentralized finance (DeFi) to supply chain management, their potential is undeniable. However, with
TL;DR Imagine the early days of the Wild West. Untamed potential, a rush of opportunity, but also the risk of chaos without the proper tools.
TL;DR Web3 wallets store and manage crypto, NFTs, and connect to dApps. Types: Top Picks for Beginners: Security Tips: As the digital landscape shifts toward
Imagine a world full of bugs and weird happenings, but we’re not talking about bugs you find under a rock—we’re diving into the cool world
Ever found yourself staring at your computer screen, wondering if Solidity has a personal vendetta against you? You’re not alone. Picture this: It’s 2 AM,
Solidity, the language powering Ethereum smart contracts, offers immense potential for building decentralized applications (dApps). However, the unique blockchain environment demands a different approach to
TL;DR Debugging Solidity smart contracts is crucial due to their immutable nature. Hardhat offers a console.log function, similar to JavaScript’s, allowing developers to print variables
TL;DR Blockchain technology has revolutionized the digital world, and at the forefront of this revolution are two key programming languages: Solidity and Rust. The ongoing
Operators are the mini-commands that make code come alive! They’re like special symbols that tell a computer what actions to perform on values and variables.
TL;DR: Fear of loops and conditionals holding you back from building dApps? Imagine them as tiny switches controlling your smart contracts, like traffic lights guiding
You probably already know about Solidity, right? It’s a programming language that helps us create smart contracts on the Ethereum network. It’s quite similar to
Solidity is a popular programming language for writing smart contracts on the Ethereum blockchain. In Solidity, global variables play a crucial role in the functioning
TL;DR Solidity is a high-level programming language specifically designed for developing smart contracts on the Ethereum blockchain. In Solidity, functions are a fundamental building block,
TL;DR:In Solidity, variables are used to store and manipulate data in smart contracts. They are classified into value types (e.g., uint, bool, address, bytes) and
Smart contracts are like digital wizards—self-executing agreements with predefined rules, all meticulously encoded. They’re the enchanting core of blockchain technology, promising a world of transparency
TL;DR Solidity is the main programming language for creating smart contracts on the Ethereum blockchain. This article covers beginner-friendly Solidity projects like the “Hello, World!”
Solidity: What Is It? Solidity is a computer language that’s used to make smart contracts. Smart contracts are computer programs that run accounts on the
TL;DR: What are Solidity Events? Solidity events are a way for smart contracts to communicate with each other and with external applications. They allow developers
Blockchain technology has changed the way we do transactions because it’s secure, can’t be changed, and is transparent. Solidity is a programming language that was
What is Smart Contract ABI? A smart contract ABI, or Application Binary Interface, is a standard way to interact with smart contracts in the Ethereum
The world of web development is constantly evolving, and with the rise of web3 technologies, it has never been more exciting. Web3 refers to the
Cryptocurrency and blockchain technology have been steadily gaining popularity in recent years, and as a result, there has been an increased demand for developers with
TL;DR: Ethereum development is a high-demand skill in blockchain and programming. To become a proficient Ethereum developer, follow a sequential learning path: By following this
Solidity is a high-level programming language that is primarily used to develop smart contracts on the Ethereum blockchain. It is a powerful tool for creating
In today’s digital age, blockchain technology has revolutionized the way we interact and conduct business. It has brought about a secure and decentralized method of
TL;DR We at Metana, believe that the learning Solidity programming language is essential for building decentralized applications (dApps) on the Ethereum blockchain. It is a
Due to the high salaries of web3 developers in the blockchain sector, many aspiring and seasoned web2 developers aim to learn web3 development. According to
The Origin Story of “Metaverse” Before we get into How to buy land in the Metaverse, Let’s look at how it started. A science fiction
Why Use MetaMask? MetaMask allows interactions between the Ethereum blockchain and a crypto wallet. While it defaults to the Ethereum network, other EVM-compatible chains can
Last year, on a YouTube video posted by Ashton Kutcher and Mila Kunis, titled, “Kitchen Talks”, a trivial question was asked by Ashton, “What is
If you’re wondering why there are two coins with the same name, as I did, you should know that Ethereum classic was created from Ethereum
Amidst the hue and cry of the crypto crash this year, which has been infamously coined “The Bear Market,” a lot of engineers have been
Smart-contract in blockchain Blockchain is widely considered to be a speculative good thing, made famous by Bitcoin. But the underlying technology is more interesting in
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