
UdemyA comprehensive tour from cryptographic foundations through real implementation. The course builds systematically: SHA-256 hashing, mining mechanics, consensus models (Proof of Work and Proof of Stake) establish the theoretical foundation. Then you implement a simple blockchain from scratch in Java, making abstractions concrete. Cryptocurrency adds another layer: Merkle trees, transaction verification, elliptic-curve cryptography, wallets, the 51% attack, and soft/hard forks.
You explore the broader ecosystem—Ethereum and Solidity, altcoins like Cardano and Litecoin, and modern scaling solutions including sharding and zero-knowledge rollups. The course acknowledges both the conceptual depth and practical implementation side, letting you engage with code or focus purely on theory. Useful for anyone curious about how blockchains work and how they're built.
Blockchain is a revolutionary technology that allows for decentralized and distributed storage of information. Maybe the hottest topic at the moment in the field of software engineering - besides artificial intelligence and machine learning - is blockchain technology. Many experts in the industry predict that the blockchain will disrupt the ways we interact with technology.
In this course you will learn about the basics of blockchain technology as well as about cryptocurrencies. You can learn about the concrete implementation of these technologies in Java - although you can skip the implementation parts if you wish.
Chapter 1 - Blockchain Theory
the fundamental basics of blockchain technology
SHA-256 hashing technique
centralized and decentralized ledgers
the concept of mining (and miners)
consensus algorithms
proof of work (PoW) and proof of stake (PoS)
the byzantine generals problem
Chapter 2 - Blockchain Implementation
implementing a simple blockchain from scratch in Java
Chapter 3 - Cryptocurrency Theory
motivation behind cryptocurrencies
Merkle trees and transaction verification algorithms
mining in cryptocurrencies
mempools
unspent transaction outputs (UTXOs)
elliptic curve cryptography in cryptocurrencies
what is a wallet?
orpahned blocks and the block verification problem
the 51% attack
soft fork and hard fork
Chapter 4 - Cryptocurrency Implementation
implementing a simple cryptocurrency from scratch in Java
Chapter 5 - Altcoins & Cryptocurrency Evolution
Ethereum, Solidity and the Ether cryptocurrency
what are ICOs?
cardano and ADA
altcoins
LiteCoin (LTC)
Dash
layer 1 and layer-2 scaling solutions
sharding and rollups (zk-rollups and zk-snarks)
coins and tokens
You should take this course, if you are interested in blockchains and cryptocurrency technology. Thanks for joining my course, let's get started!
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Not the best price we've seen. The lowest we've recorded is $12.99 on 3 Aug.
This is what we recorded in US pricing — not every price this course has ever had, and prices differ by country.