UNUS SED LEO is a utility token introduced by iFinex, the parent company of the Bitfinex cryptocurrency exchange, in May 2019. Designed predominantly to restore trust and ensure financial stability following legal and financial challenges, LEO provides users with exclusive benefits across the iFinex ecosystem. This Ethereum and EOS blockchain-based token derives its name from a Latin fable line signifying uniqueness. Central to LEO's value proposition is its token buyback strategy, funneling a portion of iFinex's profits to repurchase and burn tokens, thus encouraging scarcity and stabilizing value. By offering reduced trading fees and improved overall trade economics on Bitfinex, LEO appeals to active traders and institutional investors. This strategic tokenomics model simultaneously bolsters the exchange's user engagement while addressing transparency concerns, exemplifying the practical utility of blockchain technology through enhanced financial ecosystem interactions.