What is Blockchain? (Beginner’s Guide 2025)

Blockchain is a decentralized digital ledger that records transactions across many computers. This guide explains blockchain basics, features, and uses for beginners in 2025.

1. How Blockchain Works

Transactions are grouped into blocks, verified by a network, and added to a chain. This makes data tamper-resistant and transparent.

2. Key Features and Benefits

• Decentralization
• Transparency
• Security
• Immutability

3. Popular Blockchain Applications

• Cryptocurrencies (e.g., Bitcoin, Ethereum)
• Smart contracts
• Supply chain management
• NFTs and DeFi

Tip: Explore real-world blockchain projects to deepen your understanding.