Blockchain Tutorial

Last Updated : 14 Jan, 2026

Blockchain technology in simple words is a digital database where information or data is stored in blocks that are linked together to form a chain. This Blockchain Tutorial covers all basic to advanced topics of blockchain like cryptography, Blockchain Algorithms, Blockchain Architecture, Blockchain Security, Smart Contracts, etc.

Blockchain

It is a secure, decentralized digital ledger that records transactions in blocks linked together as a chain. Each block stores verified transaction data, and once added, it cannot be changed or deleted, making the system trustworthy and tamper-proof. It works without third parties like banks or governments, as transactions are verified by a network of computers over the internet. Blockchain is mainly used for secure, transparent transactions, and tools called blockchain explorers help view blocks, transactions, and network details.

Why Do We Use Blockchain?

  • Secure
  • Transparent
  • Tamper-proof
  • Peer-to-peer transaction

Recent Articles on Blockchain

Introduction to Blockchain Technology

Cryptography

Consensus Algorithms

Blockchain Architecture

Blockchain and Cryptocurrency

Smart Contracts and Decentralized Applications (DApps)

Blockchain Security

Blockchain Applications

Blockchain Implementation

Miscellaneous

Interview Questions

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