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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.
BlockchainUnderstanding Avalanches 3 Blockchains: X-Chain, P-Chain, and C-Chain
Avalanches are innovative, multi-layer blockchain platforms that have gained significant popularity in the cryptocurrency and decentralized application world. It is designed to be highly scalable, secure, and flexible, p
Metana EditorialOctober 11, 2024Read
BlockchainImplementing a Blockchain with JavaScript
TL;DR Yes, you can implement a basic blockchain using JavaScript! This article walks you through creating a simple blockchain, covering key concepts like blocks, hashes, Proof-of-Work, and blockchain validation. Using No
Metana EditorialOctober 10, 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
BlockchainPrivate vs Public Key Encryption [Explained]
In today’s world where data security and privacy are very important concepts, cryptography plays an important role in safeguarding information. At the heart of cryptographic systems are public and private keys, essential
Metana EditorialSeptember 13, 2024Read
BlockchainEthereum Sidechains vs Layer 2 Solutions: Find the Differences
Ethereum has revolutionized the blockchain industry by creating dApps, DeFi, and NFTs. Despite these advancements, scalability issues have led to congestion, high gas fees, and slower transaction times. The community is
Metana EditorialAugust 23, 2024Read
BlockchainScaling Solutions for Ethereum: Overcoming the Bottleneck
TL;DR: Ethereum, one of the most popular blockchain platforms, has faced a significant scalability challenge. The network’s current throughput is limited to 15 transactions per second (TPS). This limitation affects decen
Metana EditorialAugust 16, 2024Read
BlockchainExploring the Mempool: A Deep Dive
Have you ever sent a cryptocurrency payment and felt like it’s taking forever to confirm? You’re not alone. Unlike swiping your debit card, crypto transactions don’t happen instantaneously. There’s a waiting room for tra
Metana EditorialJune 18, 2024Read
BlockchainToken Standards: ERC-20, ERC-721, and More
Imagine a world where anything digital can be securely owned and traded. Artwork, in-game items, concert tickets, even your loyalty points – all represented by unique digital tokens stored on a transparent ledger. This i
Metana EditorialJune 17, 2024Read
BlockchainTop Languages for dApp Development in 2025: Complete Guide
Decentralized Applications, commonly known as dApps, have revolutionized the way we interact with digital services, providing enhanced security, transparency, and user control. As the backbone of blockchain technology, d
Metana EditorialJune 12, 2024Read
BlockchainOracles and External Data: Boosting Smart Contract Utility
Imagine a program that relies on stock prices to make investment decisions. It checks its internal database, but the information is outdated. The program is stuck, unable to function effectively. This is where oracles co
Metana EditorialJune 9, 2024Read
BlockchainWhat is a dApp? Decentralized Applications Simplified
We all rely on apps in our daily lives – for social media, shopping, banking, and more. But have you ever considered who controls these apps and how they operate? Traditional apps run on centralized servers, owned and ma
Metana EditorialJune 4, 2024Read
BlockchainDelegatecall in Solidity: Your Simplified Guide
Delegatecall is a powerful but intricate feature in Solidity that allows contracts to delegate execution to other contracts. Understanding delegatecalls is crucial for building advanced smart contract functionalities lik
Metana EditorialMay 28, 2024Read
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