Blockchain Development

What is Blockchain?

History and evolution of Blockchain

Key concepts: decentralization, distributed ledger, immutability

Types of blockchains: Public, Private, Consortium

Use cases in finance, supply chain, healthcare, and more

Basics of cryptography in Blockchain

Hash functions (SHA-256, MD5)

Public and private key cryptography

Digital signatures

Blocks, transactions, and chains

Nodes and network types

Consensus mechanisms: Proof of Work (PoW), Proof of Stake (PoS), Delegated PoS, Practical Byzantine Fault Tolerance (PBFT)

Smart contracts and their role in Blockchain

Ethereum blockchain overview

What are smart contracts?

Solidity programming basics

Deploying your first smart contract

Ethereum Virtual Machine (EVM) fundamentals

Solidity data types and structures

Functions, modifiers, events, and error handling

Inheritance and libraries in Solidity

Security best practices in smart contracts

Testing smart contracts using Truffle / Hardhat

Development environments: Remix IDE, Truffle, Hardhat

Node providers: Infura, Alchemy

Wallets and MetaMask integration

IPFS (InterPlanetary File System) for decentralized storage

What are DApps?

Architecture of DApps (Frontend, Smart Contracts, Backend)

Connecting frontend to blockchain using Web3.js / Ethers.js

Example: Building a simple voting or token DApp

Introduction to cryptocurrencies and tokens

ERC standards: ERC-20, ERC-721, ERC-1155

Creating your own cryptocurrency token

Tokenomics and real-world use cases