The Ethena airdrop campaign employed various psychological principles to incentivize desired behaviors, including variable ratio reinforcement schedules (uncertain rewards driving repeated engagement), goal gradient effects (increased effort as goals approach), and social proof (seeing others participate drives further participation). These psychological principles, when thoughtfully applied, can significantly enhance engagement and participation in cryptocurrency ecosystems. The sophisticated application of these principles in the ethena airdrop campaign demonstrates how cryptocurrency projects are increasingly leveraging insights from psychology and behavioral economics to design more effective incentive systems. This interdisciplinary approach represents an advancement in how technological projects understand and work with human nature rather than treating users as purely rational economic actors.