Explore the groundbreaking Ouroboros blockchain protocols in this seminar by Alex Russell from the University of Connecticut. Delve into the world of proof-of-stake mechanisms as an energy-efficient alternative to Bitcoin's proof-of-work system. Gain insights into the analytic challenges of proof-of-stake and learn how Ouroboros provides provable security in this setting. Discover the protocol's deployment in the Cardano/ADA cryptocurrency and its connections to coupled Markov chains, combinatorics, and the UC-model of protocol security. Examine the Bitcoin system, understand the double spending attack, and compare proof-of-work and proof-of-stake approaches. Investigate the Ouroboros protocol's structure, including epochs, block structure, and stake protocols, while considering adversarial scenarios.