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A blockchain is like a digital logbook that permanently records transactions. It’s made of “blocks,” and each block contains a bundle of transactions—these could involve money, property records, agreements, or other types of digital exchanges.

This tutorial introduces Solidity, the core programming language for writing smart contracts on Ethereum. It covers essential syntax, smart contract development, deployment, and security basics, with hands-on examples to help learners build and deploy decentralized applications (DApps).

Consensus mechanisms in blockchain are protocols that ensure all network participants agree on the validity of transactions and maintain a unified, tamper-proof ledger without relying on a central authority. They establish trust, security, and consistency in decentralized systems.

This tutorial explores the essential role of cryptography in blockchain technology, highlighting how mathematical techniques ensure trust, security, and integrity in decentralized systems. Participants will learn how cryptographic primitives form the foundation of blockchain networks, enabling secure transactions without the need for central authorities.

The tutorial provides both theoretical understanding and basic practical exposure to distributed ledger technologies and their real-world applications.