Pendulum Protocol (hereinafter referred to as PEND) is a secure and extensible decentralized database layer 2 protocol that provides unlimited verifiable decentralized data oracle and computing oracle services for mainstream blockchains, connects on-chain smart contracts with off-chain Internet data, and provides unlimited verifiable computing power. Developers and Dapp companies using Pendulum Protocol for data consumption through public smart contract data points, rather than based on centralized oracles spun off the blockchain. In this way, Dapp uses existing data on the Internet while ensuring security, building a bridge between Web 2.0 and Web 3.0 use cases to empower more real-world commercial applications.