worldBank

blockchain based banking system

We took one scenario to simulate cross border transaction, where L&T located in Atlanta, US wants to request for a stock of steel products to Tata Steel located in Kolkata, India. As this deal involves so many asset transfer (money and product) and their provenance between the countries, they need to rely on banks to handle all the financial and legal transactions. In this solution, we tried to create a blockchain based system to handle such tran sactions and records for the same in a common distributed ledger.

document	https://drive.google.com/file/d/1KeBR-GyABiS002eLNUutAWJHBhb_GOo7/view?usp=sharing

video	https://www.youtube.com/watch?v=rWWAaTIxSYo

steps to start network

1. navigate to network directory
   cd network

2. up the network
   docker-compose -f docker-compose-cli.yaml up

steps to install & invoke chaincode

3. define CHANNEL_NAME
   export CHANNEL_NAME=<CHANNEL_NAME>

4. create channel

peer channel create -o orderer.worldbank.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/worldbank.com/orderers/orderer.worldbank.com/msp/tlscacerts/tlsca.worldbank.com-cert.pem

peer channel create -o orderer.worldbank.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/channel.tx

5. join channel

peer channel join -b <CHANNEL_NAME>.block

6. Update the channel definition to define the anchor peer for Organizations in network

peer channel update -o orderer.worldbank.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/Org1MSPanchors.tx --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/worldbank.com/orderers/orderer.worldbank.com/msp/tlscacerts/tlsca.worldbank.com-cert.pem

peer channel update -o orderer.worldbank.com:7050 -c $CHANNEL_NAME -f ./channel-artifacts/Org1MSPanchors.tx

7. package the chaincode before installing (for node js chaincode)

peer lifecycle chaincode package mycc.tar.gz --path /opt/gopath/src/github.com/hyperledger/fabric-samples/chaincode/abstore/node/ --lang node --label mycc_1

peer chaincode install -n cbtcc300 -v 1.0 -l node -p /opt/gopath/src/github.com/chaincode/cbtContract/

peer chaincode install -n bacc300 -v 1.0 -l node -p /opt/gopath/src/github.com/chaincode/bankAccountContract

8. export channel name

export CHANNEL_NAME=<CHANNEL_NAME>

9. instantiate chaincode

peer chaincode instantiate -o orderer.worldbank.com:7050 --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/worldbank.com/orderers/orderer.worldbank.com/msp/tlscacerts/tlsca.worldbank.com-cert.pem -C $CHANNEL_NAME -n cbtcc -v 1.0 -c '{"Args": }' -P "OR ('xbankMSP.peer','hdfcMSP.peer')"

peer chaincode instantiate -o orderer.worldbank.com:7050 --tls --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/worldbank.com/orderers/orderer.worldbank.com/msp/tlscacerts/tlsca.worldbank.com-cert.pem -C $CHANNEL_NAME -n cbtcc -v 1.0 -c '{"Args": ["org.worldbank.cbt:instantiate"]}'

peer chaincode instantiate -o orderer.worldbank.com:7050 -C $CHANNEL_NAME -n cbtcc300 -v 1.0 -c '{"Args": ["org.worldbank.cbt:instantiate"]}'

peer chaincode instantiate -o orderer.worldbank.com:7050 -C $CHANNEL_NAME -n bacc300 -v 1.0 -c '{"Args": ["org.worldbank.bankaccount:instantiate"]}'

10. query chaincode

peer chaincode query -C $CHANNEL_NAME -n <chaincode_name> -c '{"Args":["query","a"]}'

11. invoke chaincode

peer chaincode invoke -o orderer.worldbank.com:7050 --tls true --cafile /opt/gopath/src/github.com/hyperledger/fabric/peer/crypto/ordererOrganizations/worldbank.com/orderers/orderer.worldbank.com/msp/tlscacerts/tlsca.worldbank.com-cert.pem -C $CHANNEL_NAME -n cbtcc14 -c '{"Args": }'

peer chaincode invoke -o orderer.worldbank.com:7050 -C $CHANNEL_NAME -n cbtcc300 -c '{"Args": }'

peer chaincode invoke -o orderer.worldbank.com:7050  -C $CHANNEL_NAME -n bacc200 -c '{"Args": }'

start REST API service

1. go to application directory

cd application

2. start express JS service

node app.js

It will provide REST service to client App through port 3000

use web application

Open the web pages located into client_app2 directory

Through this web pages you can interact with deployed blockchain system!