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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 ContractsERC Token Standards: Your Simplified Guide
Discover the complete guide to ERC token standards for 2026. Learn how ERC-20, ERC-721, ERC-1155, and newer standards like ERC-4337 power the Ethereum ecosystem. From fungible tokens to NFTs and account abstraction, this
Metana EditorialFebruary 13, 2026Read
SolidityShould I learn Python before Solidity- Beginner’s Guide to Blockchain Development
Yes, you should absolutely learn Python before Solidity. Here’s why: Python provides the essential programming fundamentals that make Solidity learning 50-75% faster while opening doors to diverse blockchain career oppor
Metana EditorialAugust 28, 2025Read
Smart ContractsHow Do Signatures and Malleability Impact Web3 Security?
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 significant threat. This allows attacke
Metana EditorialJuly 21, 2025Read
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
JobsAverage Solidity Developer Salary in 2025
Solidity developers earn between $70,000 and $200,000 annually, depending on their experience.
Metana EditorialJune 12, 2025Read
SoliditySolidity Mappings Explained: A Beginner-Friendly Guide
TL;DR Mappings in Solidity are key-value stores that offer fast lookups and efficient storage but lack iteration capabilities. They are ideal for storing balances, permissions, and relationships between addresses. Use ma
Metana EditorialFebruary 14, 2025Read
SolidityBest Solidity IDEs and Plugins for Developers
TL;DR A Solidity IDE is an essential tool for writing, testing, and deploying smart contracts efficiently. Since smart contracts are immutable after deployment, using a well-equipped IDE ensures fewer errors, better secu
Metana EditorialFebruary 5, 2025Read
Full-StackThe Pros and Cons of Writing Unit Tests in Solidity vs. JavaScript
In blockchain development, particularly on Ethereum, testing smart contracts is crucial to ensuring that they function as expected and are secure from exploits. Once a smart contract is deployed, it is immutable, which m
Metana EditorialOctober 22, 2024Read
SoliditySolidity Assembly Low-Level Operations and Optimization
Solidity is the primary programming language for Ethereum smart contracts. While it offers a high-level, developer-friendly syntax, it also provides access to low-level assembly, which allows developers to optimize contr
Metana EditorialOctober 9, 2024Read
BlockchainWhat is Bytes32 in Solidity?
TL;DR Bytes32 is a fixed-size (32-byte) data type in Solidity, optimized for the EVM. Used for hashes, Ethereum addresses, and fixed-size strings to save gas. More efficient than string or bytes for fixed-length data. Be
Metana EditorialSeptember 25, 2024Read
Full-StackHow Similar Are JavaScript and Solidity?
JavaScript and Solidity are both high-level programming languages widely used in their respective domains. While JavaScript dominates the web development world, Solidity is the most prominent language for writing smart c
Metana EditorialSeptember 21, 2024Read
SolidityWhat is the Solidity Compiler?
The Solidity compiler is the essential tool that converts high-level Solidity code into a format that the Ethereum Virtual Machine (EVM) can understand. Whether you’re building smart contracts for DeFi, NFTs, or decentra
Marko JaureguiSeptember 17, 2024Read
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