Lecture 2: Blockchain as a Database

Why watch

This MIT lecture examines blockchain as a distributed database system, comparing consensus mechanisms (Proof of Work, Proof of Stake) to traditional Byzantine fault-tolerant systems. Instructor Robert M. Townsend explains how blockchain solves the double-spend problem, contrasts account-based and UTXO models, and explores distinct monetary views from individual and community perspectives. Designed for graduate students with foundational blockchain knowledge.