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The Metana Blog
Guides, tutorials & career tips.
Expert-written guides on Full-Stack Development, Web3, AI, Data, and Cybersecurity — built for aspiring engineers and tech professionals ready to level up.
Smart Contracts15 Common Smart Contract Vulnerabilities (and Fixes)
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
Metana EditorialJuly 15, 2025Read
BlockchainSolidity and Homomorphic Encryption: The Key to Confidential Smart Contracts
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 are Solidity, the backbone of smart contracts, and homomorphic encryption, a r
Metana EditorialJuly 7, 2025Read
Smart ContractsUnderstanding DeFi Smart Contracts: Beginners Guide
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 ar
Metana EditorialJune 30, 2025Read
Smart ContractsHow Smart Contracts Work (Without Coding Jargon)
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 for a middleman, as the terms are
Metana EditorialJune 18, 2025Read
Smart ContractsSmart Contracts in Real Estate Transactions
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 contracts stored on a blockchain, automatically kicking into ac
Metana EditorialJanuary 27, 2025Read
Smart ContractsInteroperability in Smart Contracts
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 full potential is often limi
Metana EditorialJanuary 24, 2025Read
Smart ContractsWhy Don’t Smart Contracts Have Private Keys?
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 contracts operate withou
Metana EditorialSeptember 30, 2024Read
Smart ContractsEasy Guide to Converting Wei to Gwei
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 amounts of Ether (ETH) and its smalles
Metana EditorialSeptember 19, 2024Read
Smart Contracts[Fixed] DeclarationError: Identifier not found or not unique Solidity
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 comes with its own challenges. When
Metana EditorialAugust 24, 2024Read
Smart ContractsHow to Write a Foundry Test: Solidity Unit Testing
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 deploying them on the blockchain
Metana EditorialAugust 20, 2024Read
Smart ContractsAre Compiler Bugs in Smart Contracts a Hidden Risk?
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 machine code that the blockchain understan
Metana EditorialJuly 13, 2024Read
Smart ContractsCombating Frontrunning: Ensuring Fairness in Web3 DEXes
Web3 promises a democratized financial landscape, but a shadow lurks within its decentralized exchanges (DEXes) – Frontrunning. This exploitative practice leverages knowledge of upcoming transactions to gain an unfair ad
Metana EditorialJuly 12, 2024Read
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