This course offers a comprehensive introduction to blockchain technology and cryptocurrencies, starting with foundational concepts and the evolution of money and payment systems. Students will explore how blockchain networks function, including block validation, cryptographic hashing, and consensus mechanisms such as Proof of Work and Proof of Stake. The course delves into Ethereum's architecture, smart contracts, gas fees, and recent protocol upgrades. Learners will also gain hands-on insights into decentralized applications (DApps), token standards (ERC-20, NFTs), and use cases in gaming and decentralized finance (DeFi). Finally, the course examines real-world business applications of blockchain, highlighting its potential to transform industries through decentralization, transparency, and automation.

Blockchains and Cryptocurrencies Fundamentals

What you'll learn
The fundamental concepts of blockchain technology, understanding how it works, why it was created and the problems it aims to solve.
Mechanisms behind the working of cryptocurrencies through blockchain, cryptography, consensus, and decentralized transaction validation.
How Blockchain helps businesses build trust, boost transparency and unlock value by transforming how data, assets, and transactions are managed.
Explore Ethereum’s DeFi apps: decentralized exchanges, lending & borrowing protocols, and liquid staking innovations.
Skills you'll gain
Tools you'll learn
Details to know

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December 2025
10 assignments
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There are 5 modules in this course
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University at Buffalo

University of California, Irvine

University of Pennsylvania
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