Blockchain-Based-Property-Registration

Land Registration using Blockchain

Problem it Solves:

The elimination of middlemen: The elimination of middlemen or brokers makes the process of land registration less expensive. Brokers who try to defraud uninformed people will be unable to do so any longer. Brokers frequently take a long time to finish procedures, thus our project will help people save time.
A distributed tamper-proof ledger that prohibits ownership fraud.
IPFS is used to store important property registration papers in a secure manner.

Technology Stack:

Ethereum Blockchain
Polygon/Matic
Web3Dart
IPFS
Flutter
Metamask

Run Application on deployed website

Check out the deployed website here

This is for demonstration purposes only. With this key, you can log in as Land Inspector:

6b86cddfedbec68ed2a1c7e14b993840a0848595ba5787aec9e8a38b18f0d96a

For user:

3ed4aff1a8ff8e28df3cd307112f9166886edcc85a27136908e3b1687b111f89

You can also use your own Ethereum wallet key as a user.

Check new Smart contract At Polygon Testnet: here

Check Smart contract At (discontinued) Ropsten Ethereum Testnet: here

To Run Application Locally

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

npm install -g truffle

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

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"
Run the flutter web app

flutter pub get

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

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