Aggelos Kiayias, Alexander Russell, Bernardo David, Roman Oliynykov
cited 197 times
Time, slots, and synchrony
assumes synchronous network, meaning no network delay.
Persistence & Liveness
(1) the network is synchronous in the sense that an upper bound can be determined during which any honest stakeholder is able to communicate with any other stakeholder
(2) a number of stakeholders drawn from the honest majority is available as needed to participate in each epoch
(3) the stakeholders do not remain offline for long periods of time
(4) the adaptivity of corruptions is subject to a small delay that is measured in rounds linear in the security parameter (or alternatively, the players have access to a sender-anonymous broadcast channel)
Input endorsers (Sec 7.1): Reward mechanism for incentivizing the participants to the system which we prove to be an (approximate) Nash equilibrium. In this way, attacks like block withholding and selfish-mining are mitigated by our design
However, in the incentive structure of Ouroboros, slot leaders and endorsers who could potentially join an attack would receive rewards in both the main and the adversarial chain, resulting in those stakeholders not achieving higher profits by joining the attack.