Here we are created fully working Block-Chain Application with ReactJs and Solidity. And we implemented the Alchemy for virtualization purposes. Finally we used ropsten for local testing and deployed on ropsten using hardhat

Project Link - https://alanbinu-crypto.web.app/

• ReactJs
• Firebase Hosting
• Firebase Auth
• Solidity
• Alchemy
• Ropsten
• Hardhat
• Ropsten Etherscan

• Send Etherium
• Can able to view all the transacations

You need to install MetaMask in your browser : https://chrome.google.com/webstore/detail/metamask/nkbihfbeogaeaoehlefnkodbefgpgknn?hl=en and creeate one account.

Create on account in Alchemy (for virtualization purposes) : https://dashboard.alchemyapi.io/ and create one app

clone this repo

Go to both folders and run thew following command

npm install

Go to Alchemy and copy thr HTTP ID of the app that we created --> and paste it in smart_contract/hardhat.config.js

url : "<HTTP ID>"

Then go to MetaMask and copy the Eth account PRIVATE ID under Account Details and paste it in smart_contract/hardhat.config.js

accounts :["PRIVATE KEY"]

Then run the following command in smart_contract root folder

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

The you can see that some compiled files are generated and also one DEPLOYED ADDRESS copy that address --> go to client/src/utils/constants.js

export const contractAddress = "<DEPLLOYED ADDRESS>"

Then go to smart_contract/artifact/contracts/Transactions/ and copy the Transacation.json (which contains all our contract details in json form) ---> and paste it into client/src/utils/

Inoder to run this application it required some gas (some kind of fee), so your must need some Eth

For testing purposes, here comes ROPSTEN. It provide free Eth for testing purposes.
To claim free test Eth go to your MetaMask -> Network Settings -> Turn ON test network and connect to "Ropsten test network".

Then copy your account address and go to : https://faucet.egorfine.com/ and paste your address and claim free test Eth of 0.300 Eth.