Kryptonite

A web 3.0 React-Solidity blockchain application for ethereum cryptocurrency exchange.

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🎃 Technologies Used

• React.js
• Solidity
• Hardhat
• Tailwindcss

🏭 Prerequisites

• Node.js@latest [stable version]
• npm
• MetaMask extension in the browser

🚀 Set up in a local environment

1. Clone the repository

git clone https://github.com/KushGabani/Kryptonite
cd kryptonite

2. install the required packages and dependencies

cd krypt-client && npm install
cd ..
cd blockchain-contract && npm i

3. Create a new Alchemy app with Ethereum as the blockchain and Ropsten as our network which will allow us to manage Blockchain API calls on our Metamask account.
4. Create or signup to a MetaMask account and save the 12-word phrase in a secure place for personal future reference.
5. Go to settings > advanced settings in your MetaMask browser extension and enable Test Networks.
6. Then, Select the Ropsten Network from the MetaMask extension home page. The ropsten network is a test network in the ethereum blockchain.
7. Copy the registered address and get test ETH from Ropsten Faucet ETH
8. Export the Private Key of our MetaMask account from more options and copy it.
9. Configure hardhat by creating a .env file for blockchain-contract/hardhat.config.js.

ALCHEMY_ENDPOINT=YOUR_HTTP_ALCHEMY_ENDPOINT
METAMASK_PRIVATE_KEY=METAMASK_PRIVATE_KEY

10. Compile the Solidity blockchain contract with hardhat by running this command in the blockchain-contract directory.

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

11. Copy the contract address of the artifact given as the output of the command above and replace it with contractAddress in krypt-client/src/utils/constants.js
12. Get the artifact created with hardhat by copying the entire file: blockchain-contract/artifacts/contracts/Transactions.sol/Transactions.json
13. Paste the entire artifact by replacing the content in krypt-client/src/utils/transactions.json
14. To query Gifs using keywords, I use API provided by developers.giphy.com. Create an account on Giphy and copy the API key provided.
15. Create a .env file in krypt-client/src/ and write the following -

VITE_GIPHY_API=YOUR_GIPHY_API_KEY

16. Congratulation ✨! You've completed the setup, and you can run the npm run dev or vite command from the terminal in the krypt-client/ directory

You can access the web application in localhost:3000/

💎 Features

• Users can connect their metamask wallets in-app
• Provided a receiver address, the user can send ETH and each transaction requires 21,000 Gwei || 0.000020223 ETH as gas fees.
• Along with the transaction, the user can specify their twitter @ and a keyword through which a gif is attached to the memory of the blockchain
• Users can view all their transactions on the blockchains as user-friendly cards with etherscan links associated to each transaction.