Why Proof-of-Stake Fails

Proof-of-Stake networks market themselves as "efficient" alternatives to PoW, but do they deliver equivalent security? This course systematically examines PoS's fundamental vulnerabilities that no amount of engineering can overcome. You'll discover why "rich-get-richer" dynamics aren't just side effects but inherent features of PoS architecture, how the absence of performance incentives creates structural weaknesses, and why Sybil attacks remain viable when consensus power derives from token ownership rather than computational work. The course concludes by analyzing Delegated Proof-of-Stake (DPoS)—revealing why this popular "improvement" actually amplifies centralization rather than solving PoS's core problems. By understanding these failures, you'll see why PoS networks are distributed ledgers mimicking blockchain structure rather than true blockchains.