This Ethereum smart contract is designed to facilitate the creation and funding of projects. Each project has a unique ID and a funding goal. Investors can contribute Ether to a project, and if the funding goal is reached, the project owner can withdraw the funds.
- Create projects with a unique ID and a funding goal.
- Contribute to projects. If the contribution exceeds the remaining amount to reach the funding goal, the transaction is reverted.
- If the funding goal is reached, the project is automatically closed.
- The project owner can manually close a project.
- The project owner can update the funding goal. The new funding goal must be greater than or equal to the current amount raised.
- Once the funding goal is reached, the project owner can withdraw the funds.
- Support for token contributions, including ERC20 stable coins.
- Contract upgradeability using a proxy contract setup.
- Role and permission-based access control.
- Private sales and fee management.
- Support for multi-chain deployment and interaction.
- Transfer limits for contributions.
- Retrieval functionality for all available projects.
- KYC processes or similar steps.
Here is a UML sequence diagram of the smart contract:
The smart contract emits the following events:
- ProjectCreated: Emitted when a new project is created.
- ContributionMade: Emitted when a contribution is made to a project.
- FullyFunded: Emitted when a project reaches its funding goal.
- Closed: Emitted when a project is manually closed.
- FundingGoalUpdated: Emitted when the funding goal of a project is updated.
- FundsWithdrawn: Emitted when the project owner withdraws the funds.
First, install the dependencies:
npm installThen, compile the smart contract:
npm run compileStart a local dev node
npm run nodeTo deploy the smart contract to the local Hardhat Network, run in a new CLI:
npm run deploy::localYou can also test the smart contract by running:
npm run test