This project is a simple smart contract lottery that uses a prooveably uses randomness to draw a winner. It is based on the Chainlink VRF and Chainlink Automation to automate the draw.
- Users can enter the lottery by buying a ticket
- 90% of the ticket fees sum up to the prize pool and are distributed to the winner
- 10% of the ticket fees are distributed to the owner of the raffle
- the owner is responsible for refunding the chainlink subscription and chainlink automation
- there is no way for the owner to withdraw the prize pool
- After a certain amount of time, the lottery is closed and a winner is drawn
- This will be done utilising Chainlink's VRF for Randomness and Chainlink's Automation for executing the draw
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
Foundry consists of:
- Forge: Ethereum testing framework (like Truffle, Hardhat and DappTools).
- Cast: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
- Anvil: Local Ethereum node, akin to Ganache, Hardhat Network.
- Chisel: Fast, utilitarian, and verbose solidity REPL.
$ forge build
$ forge test
$ forge fmt
$ forge snapshot
$ anvil
$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
$ cast <subcommand>
$ forge --help
$ anvil --help
$ cast --help