Smart Bitcoin Cash (or smartBCH for short) can be described as a sidechain to Bitcoin Cash. It aims to explore new ideas and unlock potential. It is compatible with Ethereum's EVM API and Web3 API. It provides high throughput for DApps in an efficient, secure, decentralized, and fast manner. EVM&Web3 compatible, with a short block interval to support DeFi apps. To allow more people to practice DeFi at a low cost, the throughput can reach as high as one billion gas per 15 seconds. It was developed from scratch and includes several low-level libraries that fully exploit the potential of hardware, particularly its inherent parallelism. Extra reward for Bitcoin Cash's holders and miners, who can elect Smart Bitcoin Cash validators with hashpower and locked coins, respectively. Create trustless, non-custodian two way pegged gateways that can support all types of side chains of Bitcoin Cash and allow for secure bidirectional transfer of BCH.