Blockchain Concepts

Cryptocurrency is digital money powered by blockchain and cryptography. Learn how it works, key types like stablecoins and Bitcoin, real-world uses, security risks, and why it matters today.

Smart contracts are programs on blockchains that run automatically when conditions are met. Learn how they work, why they matter, and how they power dApps, DeFi, NFTs, and decentralized governance.

This article provides a foundational overview of blockchain consensus algorithms, explaining how decentralized networks agree on a shared history without a central authority. It breaks down the two essential components of consensus—Sybil resistance mechanisms and chain selection rules—using real-world examples from Bitcoin, Ethereum, and Solana. Readers will learn how different blockchains prevent manipulation, finalize transaction history, and maintain security at scale.

Learn the key differences between public, private, and consortium blockchains. This guide explains access, governance, transparency, consensus models, and real-world use cases. Perfect for developers and professionals entering Web3.

Beginner's guide to blockchain technology explained simply. Learn Bitcoin, Ethereum basics, decentralization, and cryptocurrency fundamentals step-by-step.