Beyond the Basics of Blockchain Course

This course moves away from focusing solely on blockchain to discuss how blockchain can be replaced, expanded or improved to meet the needs of a particular use case.

55 minutes

Course description

So far, this learning path has been focused on blockchain-based distributed ledgers. This course goes beyond this view to discuss how the blockchain protocol can be replaced (using different underlying architectures), expanded (with second-layer protocols) or improved (using advanced cryptographic primitives) to overcome some of the limitations of blockchain technology.


Course Recap

Video - 00:02:00

This video reviews the information covered in this course.
Advanced Cryptography in Blockchain

Video - 00:25:00

This video describes how blockchain can go beyond public-key cryptography and hash functions to use more cryptographic algorithms in order to provide additional features.
Second-Layer Protocols

Video - 00:07:00

This video discusses protocols that can be built on top of a blockchain, such as state channels (like Bitcoin's Lightning Network).
Alternative Distributed Ledger Architectures

Video - 00:19:00

This video introduces alternative distributed ledger architectures, such as directed acyclic graphs, block lattices and sidechains.
Course Introduction

Video - 00:02:00

This video introduces this course, providing an overview of topics to be covered.

Meet the author

Howard Poston

Howard Poston is a copywriter, author, and course developer with experience in cybersecurity and blockchain security, cryptography, and malware analysis. He has an MS in Cyber Operations, a decade of experience in cybersecurity, and over five years of experience as a freelance consultant providing training and content creation for cyber and blockchain security. He is also the creator of over a dozen cybersecurity courses, has authored two books, and has spoken at numerous cybersecurity conferences. He can be reached by email at or via his website at

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