MortgageBlockchainFabric | Mortgage Processing App using Hyperledger Fabric | Blockchain library

Access Control for channels. Flowchart and 3 blockchains.
A peer for each organization
Pre-created Member Service Providers (MSP) for authentication and identification
An Orderer using SOLO
Records channel – this channel is public blockchain which is owned by City/District for recording properties, details, ownership and title history for tax purposes. Everyone has read access to it but only Registry (City) can create update it.
Lending Channel – is for lenders, credit bureaus, titel companies and Insurers to share information about prospective buyer. It is off limits to others for protecting sensitive information and data integrity. Lenders, Bureaus, and Insurers can update/add transactions, and auditors/regulators/title companies have read only access to it.
Books or Appraiser-Title Channel is for appraisers and title companies to add/update transactions. Since these are third parties to lenders, and to resolve conflict of interests with lenders, lenders and registry have read access only- which it needs for processing loan.
Run the following command to kill any stale or active containers:. Create artifacts (certs, genesis block and channel info). start network with start option ./scripts/start_network.sh. ./scripts/setupNetwork.sh this script creates channels, join channels, instantiates and installs chaincode, populates ledger with initial entries (realestates on records, and realestates on books blockchains). It will also dump the entire ledgers at the end. You can check if we have correct entries in all the ledgers. Lending Ledger should be empty as we have not submitted any loan application. ` Query Result: [{"Key":"11111", "Record":{"RealEstateID":"11111","Address":"10 High Strret, LA 75004 ","Value":1.1e+06,"Details":"6501 sq. ft 7 beds 2 baths blah blah","Owner":"Doug Gates",. ,{"Key":"12131415", "Record":{"RealEstateID":"12131415","Address":"12 High Strret, LA 75004 ","Value":3.5e+06,"Details":"6503 sq. ft 7 beds 2 baths blah blah","Owner":"Billy Bob ","TransactionHistory":{"createRealEstate":"Wed, 07 Feb 2018 02:05:20 UTC"}}}. ] 2018-02-07 02:09:30.958 UTC [main] main -> INFO 003 Exiting.....`. 2018-02-07 02:09:51.211 UTC [main] main -> INFO 003 Exiting..... Query Result: [ ]. Query Result: [{"Key":"11111", "Record":{"RealEstateID":"11111","Appraisal":0,"NewTitleOwner":"","TransactionHistory":{"initiateBooks":"Wed, 07 Feb 2018 02:07:22 UTC"}}}. ,{"Key":"12131415", "Record":{"RealEstateID":"12131415","Appraisal":0,"NewTitleOwner":"","TransactionHistory":{"initiateBooks":"Wed, 07 Feb 2018 02:07:53 UTC"}}}. ,{"Key":"891011", "Record":{"RealEstateID":"891011","Appraisal":0,"NewTitleOwner":"","TransactionHistory":{"initiateBooks":"Wed, 07 Feb 2018 02:07:38 UTC"}}' `. You can submit 3 loan requests with 3 scripts. We have a requirement of title search for closing the loan that is randomized to produce true/false so there is 50/50 chance that your loan will be funded. Hence we try 3 loan requests to get at least one to go through with "funded" status. You can also edit these sripts and global replace RealEstateID and new owner input by picking a different property from createLedgerEntries.sh file.
Run the following command to kill any stale or active containers: ./scripts/cleanup.sh
Create artifacts (certs, genesis block and channel info) ./scripts/createArtifacts.sh build chaincodes (compile before you deploy, this step is optional but is a must if you edit chaincodes and want to restart the network so as to make sure it does not fail to compile during deployment ) go get -u --tags nopkcs11 github.com/hyperledger/fabric/core/chaincode/shim go build --tags nopkcs11
start network with start option ./scripts/start_network.sh
./scripts/setupNetwork.sh this script creates channels, join channels, instantiates and installs chaincode, populates ledger with initial entries (realestates on records, and realestates on books blockchains). It will also dump the entire ledgers at the end.