By analyzing blockchain data, MetaVisa Protocol is designed to help users to establish and display reliable on-chain identity & credit records and makes it easier for DeFi, NFT, GameFi, DAO, and other DApps to serve their users through its credit system. Based on the blockchain data, using cloud computing, machine learning technologies, and model algorithms such as logistic regression, decision trees, random forests, etc., MetaVisa conducts comprehensive processing and evaluation of data in various dimensions such as Credit History, On-Chain Behavior Preference, Address Activity Level, Asset Holdings & Portfolio, Address Correlation. The MetaVisa credit score system will award the users with ranked badges based on their MCSs. Users with higher MCSs will be rewarded with high-ranking badges and therefore have privileges in services from various DApps.