souravmaji1/blockchain-land-registery

Technology Stack:

1. Ethereum Blockchain
2. Polygon/Matic
3. Web3Dart
4. IPFS
5. Flutter
6. Metamask

This is demo purpose. You can login as Land Inspector using this key:

6b86cddfedbec68ed2a1c7e14b993840a0848595ba5787aec9e8a38b18f0d96a

For user:

3ed4aff1a8ff8e28df3cd307112f9166886edcc85a27136908e3b1687b111f89

For user you can also use your own Ethereum wallet key

Check Smart contract At Ropsten Ethereum Testnet: here

Run Application Locally

1.Clone the github repository and cd to the folder
2.Install flutter,nodejs\

• use flutter version 2.10.5 *

3.Install ganache and truffle

npm install -g truffle

4.Open Ganache and keep it running in the Background
5.Install Metamask chrome extension,choose local network and import accounts
6.Compile and run our migrations from the command line like this

truffle compile
truffle migrate

6.Copy contract address paste in ./lib/constant/constant.dart - 'contractAddress'\

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 chainId to '1337' and change 'rpcUrl' to "http://127.0.0.1:7545"
8.Run 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 'mapBoxApiKey' constant.dart file
11.Create nftstorage api key from https://nft.storage/ and replace it.
<<<<<<< HEAD

12.you need to run the docker application in the background so that you can able to run the dapp locally

Important :

If you are unable to deploy smart contract using truffle then just follow the below steps

1. go to remix ide by searching on google
2. create a "example.sol" file and paste the (land smart contract ) code over there
3. select the injected web3 option before deploying
4. choose any test network like polygon mumbai , goerli
5. then click on the deploy button to deploy the smart contract
6. copy the smart contract address
7. paste the smart contract address in the "lib/constants/constant.dart

contract address : "jdsjdnsjdsjd"

replace the rpc url with that test network you have deployed also change the chain id in which testnetwork you have deployed

That's all

Screenshots

Home Page	Wallet connect/Login

Contract Owner Dashboard	User Registration

Land Inspector Dashboard	User Verification

User Dashboard	Adding land on Map

Land Gallery	Land Details

Received Request	Make Payment

Transfer ownership,Seller,buyer photo capture	Witness info,photo capture,transfer ownership