Distributed Systems and Alternative Consensus

Blockchain architecture is built on the foundation of decades of computer science and distributed systems literature. We start out by providing a formal definition of distributed consensus and presenting foundational theoretical computer science topics such as the CAP Theorem and the Byzantine Generals Problem. We then explore alternative consensus mechanisms to Bitcoin’s Proof-of-work, including Proof-of-Stake, voting-based consensus algorithms, and federated consensus.

Cryptoeconomics and Proof-of-Stake

We examine the meaning and properties of cryptoeconomics as it relates to its two compositional fields: cryptography and economics. We then look at the goals of cryptoeconomics with respect to distributed systems fundamentals (liveness, safety, data availability) and the griefing factors and faults in the way of these goals.

Enterprise Blockchain: Real-World Applications

We look at various existing enterprise-level blockchain implementations, such as JP Morgan’s Quorum, Ripple, Tendermint, and HyperLedger. We also explore business and industry use cases for blockchain, ICOs, and the increasing regulations surrounding blockchain.

Scaling Blockchain: Cryptocurrencies for the Masses

One major obstacle to widespread blockchain adoption is the problem of scalability. We define scaling first as it relates to Bitcoin as a payment method, and compare it to more traditional forms of payment such as credit cards. We then consider the general blockchain scalability debate and look into some of the solutions that have been proposed for vertical scaling (e.g. blocksize increases, Segregated Witness, and the Lightning Network), as well as horizontal scaling (e.g. sidechains, sharding).

Regulation and Anonymity

We look into the measures that governments have taken to regulate and control blockchain technology. We examine Anti-Money Laundering (AML) and Know Your Customer (KYC) regulations, anonymity goals, and government techniques for deanonymization of entities on blockchain. Then from the user’s perspective, we also dive into privacy oriented altcoins and mixing techniques.

A Blockchain-Powered Future

A summary of the course and an exploratory look into blockchain ventures today, such as venture capitalism, ICOs, and crowdfunding. We conclude with a blockchain-based future thought experiment.