My First Decentralized App with Ethereum

I recently went through the Buildspace course tutorial to build a web3 dapp using Ethereum, and it was super fun. I built a smart contract using Solidity and Hardhat, and deployed it to the Rinkeby test network.

The project was to “wave” to someone by posting a comment that gets published to the blockchain with their personal wallet address. I customized this to post golf scores as a type of public handicap tracker.

I wrote the smart contract that posts data to the Ethereum blockchain, and even awards a token to anyone who posts a score. The front end is built with React. It was super fun and I learned a lot!

You can see it here, and post your own scores! You’ll need a Metamask wallet, connect to the Rinkeby test network, and make sure you have some ETH in the wallet (get it from a faucet). It doesn’t cost anything, and it doesn’t store any private information.

You can see the code for the smart contract here, and the code for the front end React app here.