The Metana Blog
Meet our authors →Guides, tutorials and explainers on Blockchain from Metana's instructors and editorial team.
BlockchainAvalanches 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,…
BlockchainTL;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 .…
BlockchainTL;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.…
BlockchainIn 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 ,…
BlockchainEthereum 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…
BlockchainTL;DR: Ethereum's current throughput is limited to 15 transactions per second, leading to network congestion and high gas fees. Layer-1 solutions like Ethereum 2.0 aim to enhance scalability by transitioning to a Proof…
BlockchainHave 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…
BlockchainImagine 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…
BlockchainDecentralized 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,…
BlockchainImagine 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 It checks its internal database, but the information is outdated.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…
BlockchainWe 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…
SolidityDelegatecall 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…
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