Land Registry on Hyperledger Fabric

Table of Contents

• About
• Getting Started

About

Land Registry using Hyperledger Fabric

Getting Started

Prerequisites

Hyperledger-Fabric Golang Node.js Docker

Creating a Test-Network, Channel and Installing the chaincode

A step by step series of instructions that tell you how to run this in a development env.

Step 1: Clone the repo to a folder in your machine Step 2: Follow the below steps to ensure the required Chaincode dependencies are available

cd chaincode/

go mod init landregistry-application-chaincode 

go get -u github.com/hyperledger/fabric-contract-api-go

go mod tidy

go mod vendor

Step 3: Build the Chaincode - i.e. compile the Chaincode(Smart Contract) and ensure a successful compilation

go build

Step 4: Deploy the chaincode;

1. Change into test-network directory

cd landregistry/test-network

2. Bring the Network Down

./network.sh down

3. Bring the network Up

./network.sh up

4. Create channel using createChannel

./network.sh createChannel

5. Check docker containers

docker ps -a

6. Deploy Chaincode

./network.sh deployCC -ccn landreg -ccl go -ccp ../chaincode -cci InitLedger

7. Prepare to use command line arguments

export PATH=${PWD}/../bin:$PATH

export FABRIC_CFG_PATH=$PWD/../config/

8. Set the Endorsing peers information

source ./scripts/setPeerConnectionParam.sh 1 2

9. Set the context for Org1

source ./scripts/setOrgPeerContext.sh 1

Interacting with Chaincode

Query the Property Details - using QueryProp function - one example below;

peer chaincode invoke -o localhost:7050 --ordererTLSHostnameOverride orderer.example.com --tls --cafile ${PWD}/organizations/ordererOrganizations/example.com/orderers/orderer.example.com/msp/tlscacerts/tlsca.example.com-cert.pem -C mychannel -n landreg $PEER_CONN_PARAMS -c '{"function":"QueryProp","Args":["PROP1"]}'

Output will look like below;

2021-11-22 14:07:46.156 IST [chaincodeCmd] chaincodeInvokeOrQuery -> INFO 001 Chaincode invoke successful. result: status:200 payload:"{\"proptype\":\"Ind House\",\"propcity\":\"Bengaluru\",\"propstate\":\"KA\",\"propsqft\":\"3200\",\"propowner\":\"Abraham\"}"