ChainzRegistry

Land Registry using Blockchain

Problem it Solves:

A digital platform for secure and transparent land transactions.

Key Features: Online transactions, AI/ML for price analysis, E-Vault for document safety, Reward system and a Bored button.

Technology Stack:

1. Ethereum Blockchain
2. Polygon/Matic
3. Dart
4. IPFS
5. Flutter
6. Metamask
7. Node.js
8. Solidity
9. NFT.Storage
10. Hardhat

Demo

Our Dapp is demonstrated in this video here

Run Application on deployed website

Check out the deployed website here

To Run Application Locally

1. Clone the github repository and cd to the folder
2. Install the flutter 3.0.2, nodejs
3. Install ganache and truffle as shown below:

   npm install -g truffle

4. Open Ganache and keep it running in the Background
5. Install the Metamask chrome extension, choose the local network and import the accounts

6. Compile and run our migrations from the command line as shown below:

   truffle compile
   truffle migrate

   6 .Copy contract address as seen in the image below and paste in variable contractAddress located in the file ./lib/constant/constant.dart

   2_deploy_migration.js
   =====================
   
   Replacing 'Land'
   ----------------
   > transaction hash:    0x427b2b402f767ac6a90334ab3c687b086b274de747fe10d6e194743b15057d78
   > Blocks: 0            Seconds: 0
   >contract address:    0xed690C24C60A48F8A9819c9A15AD75B70CFBEa5a
   > block number:        3
   > block timestamp:     1650602828
   > account:             0x33e94e4619f0AecDf81e9676Eb82c109FBa53356
   > balance:             99.9154895
   > gas used:            3996227
   > gas price:           20 gwei
   > value sent:          0 ETH
   > total cost:          0.07992454 ETH
   

7. In constant.dart file, change the value of the variable chainId to '1337' and change the value of the variable rpcUrl to "http://127.0.0.1:7545"
8. Run the flutter web app

   flutter pub get
   flutter run -d web-server --web-port 5555

9. Open the browser and the dapp will be running in http://localhost:5555/
10. Create mapbox api key from https://www.mapbox.com/ and Replace it with mapBoxApiKeyin constant.dart file

Project Flowchart