Multi-chain event protocol (MEP)

MEP is a blockchain system that operates as a cache layer and authentication infrastructure for dApps. A user-defined interface for developers lets them describe which types of message they want to transfer. This allows MEP to store only data necessary for message transfer rather than the whole chain. MEP is also a service that dApps can query for information about accounts on multiple chains. For example, a Wallet dApp may want to access all tokens on all chains of a certain user. MEP is an authentication service that signs a given requested message and a verification services in the form of smart contracts on each underlying blockchain (such as BNB Chain, which can verify the authentication issued by MEP.