Proton (XPR) is a novel public chain and smart contract platform designed to enhance consumer applications and peer-to-peer payments. Proton focuses on the construction of security authentication and financial settlement layers, enabling users to link non-monetary accounts with real identities, access funds, purchase cryptocurrencies, and seamlessly use this cryptocurrency within applications. XPR is the token of the Proton chain, and Proton is an integration of the Lynx wallet and the Metal payment project, i.e., Lynx + Metal = Proton.