https://github.com/sumukus/gcitcert

This is a simple implementation of dApp in react native using the MetaMask wallet and ethersjs
https://github.com/sumukus/gcitcert

dapp ethereum ethers ethersjs expo metamask metamask-wallet react-native smart-contract solidity

Last synced: 10 days ago
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This is a simple implementation of dApp in react native using the MetaMask wallet and ethersjs

• Host: GitHub
• URL: https://github.com/sumukus/gcitcert
• Owner: sumukus
• Created: 2023-06-11T08:46:49.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-06-14T08:36:30.000Z (over 1 year ago)
• Last Synced: 2024-11-14T15:33:43.674Z (2 months ago)
• Topics: dapp, ethereum, ethers, ethersjs, expo, metamask, metamask-wallet, react-native, smart-contract, solidity
• Language: JavaScript
• Homepage: https://learn.drukinfotech.com/mobile-dapp-react-native-metamask-ethersjs/
• Size: 559 KB
• Stars: 4
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# gcitCert

This is a simple implementation of dApp in react native using the MetaMask wallet and ethersjs.

# Application Overview

We will create a certificate issue application for our a college. The mobile dApp will have the following feature:

+ Issue Certificate - The authorized person will be able to issue the certificate

+ Verify Certificate - Anyone can check the authenticity of the certificate and verify whether it was issued by the college

+ View Certificate Details - the individual can access their certificate details from the system

+ View Account Information - User will be able to see account address and its balance

# Replicate the above mobile dApp

In oder to try this app, follow the steps given below

## Clone tbe app and install the necessary packages

```

git clone [email protected]:sumukus/gcitCert.git gcitCert

cd gcitCert

npm i

```

### Edit the file inside smartcontract directory

You have to edit the gcitCert.sol file.

+ Inside the gcitCert.sol file replace the address in addgcitCert method with one of your MetaMask wallet account address from testnet(Sepolia)

```

require(msg.sender == address(0x9dC22219076ef89d9E0a6248F18B3582Ea7A93dB), "Only the authorized issuer can add certificates");

```

Then deploy the smart contract in the Sepolia testnet and take note of the contract address. We will require it later on to interact 

with the smart contract. 

## Create .env file 

Create the .env file in the root directory and add the details for the given fields 

```

SMART_CONTRACT_ADDRESS=Your smart contract address 

INFURA_API=infura api for your app

CERTIFICATE_ISSUER=address of certificate issuer

```

## Run the dApp

Now you can run the dApp using the command given below

```

npx expo start

```