Develop a Decentralized Lottery System Smart Contract

In this Build Project, you'll be asked to develop a smart contract that simulates a decentralized lottery system. Such a system requires transparency, security, and verifiability to ensure trust among participants. A smart contract is essentially a “black box” that executes predefined rules, but understanding its internal mechanics and ensuring its fairness can be complex. Therefore, comprehensive testing and evaluation are crucial to confirm the smart contract's reliability and performance.  Under the supervision of an experienced Build Fellow, you'll develop a fully functional smart contract that will be deployed in the Ethereum Sepolia Testnet. You'll also use various metrics and test simulations to identify potential vulnerabilities or failure modes.