his course provides a focused and comprehensive understanding of blockchain basics with a special emphasis on consensus mechanisms, which are the foundation of all decentralized systems. Students will start by learning how blockchain technology works as a distributed ledger, where data is stored across multiple nodes instead of a central server, ensuring transparency, security, and resilience.

The course explains how consensus algorithms allow decentralized networks to agree on a single version of truth even when participants do not trust each other. Learners will explore key concepts such as proof-of-work, Byzantine fault tolerance, and state machine replication, understanding how these models help blockchain systems remain secure in adversarial environments.

Students will also study how transactions are validated, how blocks are added to the chain, and how network participants coordinate without central authority. The course breaks down complex distributed systems concepts into simple explanations, making it easier to understand how blockchain networks like Bitcoin and Ethereum maintain integrity and consistency.

In addition, learners will gain insight into the challenges of scalability, security, and decentralization, often referred to as the blockchain trilemma. By the end of the course, students will have a strong understanding of how consensus works and why it is essential for blockchain technology.

This course is ideal for beginners, computer science students, and anyone interested in understanding the technical foundations of blockc