This is a simple To-Do project, that can add task, mark tasks, and check history of user's tasks.

Technologies that was used in this project:

• backend, smart contract: Solidity, hardhat, ethers.js
• frontend: React.js

1. Create .env with following variables

    NETWORK=(which network).
    INFURA_URL="https://sepolia.infura.io/v3/(YOUR-API-KEY)".
    PRIVATE_KEY=(PRIVATE KEY OF YOUR METAMASK ACCOUNT).
    ETHERSCAN_API=(API that you can get from etherscan.io).
    OWNER=(YOUR METAMASK WALLET HASH).

2. Install dependencies

npm i

3. Compile contract using

npx hardhat compile

4. Deploy hardhat to blockchain

npx hardhat run --network sepolia scripts/deploy.js

5. Verify contract

npx hardhat verify --network sepolia {your contract address} 

6. Run server

npm start

Don't forget to add your contract address to contractAddress variable in Form.js and HistoryPage.js