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Selling homes the {"Blockchain": "DLT"} way

UML Diagram of the model

UML Design of the Ledger Model

UML Diagram of the model

Read the introduction here at https://www.devb.com/devbpaper-blockchain.php

Install the business application

Download the Mortgage-Network application from github

$ cd ~/fabric-tools

$ curl -LJO https://github.com/snoborder/mortgage-network/archive/master.zip

$ mv mortgage-network-master.zip mortgage-network.zip

$ unzip mortgage-network.zip

Start Hyperledger Fabric

$ ./startFabric.sh

$ ./createPeerAdminCard.sh

$ cd mortgage-network

$ composer runtime install --card PeerAdmin@hlfv1 --businessNetworkName mortgage-network

$ composer network start --card PeerAdmin@hlfv1 --networkAdmin admin --networkAdminEnrollSecret adminpw --archiveFile

$ composer card import --file networkadmin.card

$ composer network ping --card admin@mortgage-network

$ composer-rest-server (enter admin@mortgage-network)

Restarting

$ composer network start --card PeerAdmin@hlfv1 --networkAdmin admin --networkAdminEnrollSecret adminpw --archiveFile mortgage-network@0.0.1.bna --file networkadmin.card

$ composer network ping --card admin@mortgage-network

$ composer-rest-server -c admin@mortgage-network -n never -w true

Use Cases

Seller John Doe owns a Condo on a lake property. Listing agent Jane Smith creates the initial listing of the property. Potential Buyer is Rod Stewart.

Persons

PS001 - Seller - John Doe PS002 - Listing Agent - Jane Smith PS003 - Buyer - Rod Stewart

Party

PT001 - Party of Rod Stewart

PropertyHome

H001 - Condo on Lake

Transaction (CreateULDD)

U001

Data and Posts

Create the Seller, Listing Agent and Buyer

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.Person", \ "personId": "PS001", \ "personRoleType": "SELLER", \ "governmentId": "string", \ "firstName": "John", \ "lastName": "Doe" \ }' 'http://localhost:3000/api/Person'

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.Person", \ "personId": "PS002", \ "personRoleType": "LISTING_AGENT", \ "governmentId": "string", \ "firstName": "Jane", \ "lastName": "Smith" \ }' 'http://localhost:3000/api/Person'

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.Person", \ "personId": "PS003", \ "personRoleType": "BUYER", \ "governmentId": "string", \ "firstName": "Rod", \ "lastName": "Stewart" \ }' 'http://localhost:3000/api/Person'

Data: { "$class": "com.devb.mortgage.Person", "personId": "PS003", "personRoleType": "BUYER", "governmentId": "string", "firstName": "Rod", "lastName": "Stewart" }

Create the Party

Data: { "$class": "com.devb.mortgage.Party", "partyId": "PT001", "persons": ["resource:com.devb.mortgage.Person#P003" ], "contactPoint": [ { "$class": "com.devb.mortgage.ContactPoint", "contactId": "CT001", "contactPoint": "string", "id": "string" } ], "name": "string", "address": [ { "$class": "com.devb.mortgage.Address", "addressId": "string", "addressLine1": "string", "addressLine2": "string", "city": "string", "state": "string", "postalCode": "string", "id": "string" } ], "role": "ASSET_OWNER", "taxIdentifier": "string" }

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.Party", \ "partyId": "PT001", \ "persons": ["resource:com.devb.mortgage.Person#P003" \ ], \ "contactPoint": [ \ { \ "$class": "com.devb.mortgage.ContactPoint", \ "contactId": "CT001", \ "contactPoint": "string", \ "id": "string" \ } \ ], \ "name": "string", \ "address": [ \ { \ "$class": "com.devb.mortgage.Address", \ "addressId": "string", \ "addressLine1": "string", \ "addressLine2": "string", \ "city": "string", \ "state": "string", \ "postalCode": "string", \ "id": "string" \ } \ ], \ "role": "ASSET_OWNER", \ "taxIdentifier": "string" \ }' 'http://localhost:3000/api/Party'

Create the Property

Data: { "$class": "com.devb.mortgage.PropertyHome", "propertyId": "H001", "propertyName": "Great Condo on Lake", "propertyType": "CONDOMINIUM", "propertyState": "PENDING", "isListed": true, "listingAgent": "resource:com.devb.mortgage.Person#002", "address": "63 Lake Shore Road", "city": "Rockaway", "state": "NJ", "zip": "07866", "value": 300000.00, "listingStart": "2018-02-12T20:58:19.955Z", "listingEnd": "2018-02-12T20:58:19.955Z" }

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.PropertyHome", \ "propertyId": "H001", \ "propertyName": "Great Condo on Lake", \ "propertyType": "CONDOMINIUM", \ "propertyState": "PENDING", \ "isListed": true, \ "listingAgent": "resource:com.devb.mortgage.Person#002", \ "address": "63 Lake Shore Road", \ "city": "Rockaway", \ "state": "NJ", \ "zip": "07866", \ "value": 300000.00, \ "listingStart": "2018-02-12T20:58:19.955Z", \ "listingEnd": "2018-02-12T20:58:19.955Z" \ }' 'http://localhost:3000/api/PropertyHome'

Fire the transactions (ULDD Document)

Data: { "$class": "com.devb.mortgage.ULDD30", "loanId": "U001", "loadIdType": "FHA", "aboutVersion": "MISMO 3.0", "dealSets": { "$class": "com.devb.mortgage.DealSets", "dealSetsId": "DLS001", "dealSet": { "$class": "com.devb.mortgage.DealSet", "dealSetId": "DL001", "deal": { "$class": "com.devb.mortgage.Deal", "dealId": "D001", "otherAsset": { "$class": "com.devb.mortgage.OtherAsset", "assetId": "string", "assetName": "string", "id": "string" }, "collateral": "resource:com.devb.mortgage.PropertyHome#H001", "loan": { "$class": "com.devb.mortgage.Loan", "loanId": "L001", "loanType": "ADJUSTMENT", "investorFeature": "string", "loanComments": "string", "loanDetail": "string", "loanLevelCredit": "string", "loanPrograms": "string", "loanState": "NONE", "ltv": 0, "maturity": "string", "mers_registrations": "string", "mi_data": "string", "modifications": "string", "optional_products": "string", "payment": 0, "prepayment_Penalty": "string", "qualification": "string", "servicing": "string", "termsOfMortgage": "string", "underwriting": "string", "id": "string" }, "combinedLTV": 0, "partyRoles": "resource:com.devb.mortgage.Party#PT001", "id": "string" }, "investorFeature": "resource:com.devb.mortgage.Person#PS001", "partyRoles": "resource:com.devb.mortgage.Party#PT001", "pool": "string", "id": "string" }, "partyRoles": "resource:com.devb.mortgage.Party#PT001", "ulddGovtMonitoring": { "$class": "com.devb.mortgage.ULDDGovernmentMonitoring", "ulddGovtId": "string", "hmdaEthnicity": "string", "hmdaEthnicityOrigin": "string", "hmdaRaceDesignation": "string", "hmdaRaceDetail": "string", "id": "string" }, "id": "string" } }

curl -X POST --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{ \ "$class": "com.devb.mortgage.ULDD30", \ "loanId": "U001", \ "loadIdType": "FHA", \ "aboutVersion": "MISMO 3.0", \ "dealSets": { \ "$class": "com.devb.mortgage.DealSets", \ "dealSetsId": "DLS001", \ "dealSet": { \ "$class": "com.devb.mortgage.DealSet", \ "dealSetId": "DL001", \ "deal": { \ "$class": "com.devb.mortgage.Deal", \ "dealId": "D001", \ "otherAsset": { \ "$class": "com.devb.mortgage.OtherAsset", \ "assetId": "string", \ "assetName": "string", \ "id": "string" \ }, \ "collateral": "resource:com.devb.mortgage.PropertyHome#H001", \ "loan": { \ "$class": "com.devb.mortgage.Loan", \ "loanId": "L001", \ "loanType": "ADJUSTMENT", \ "investorFeature": "string", \ "loanComments": "string", \ "loanDetail": "string", \ "loanLevelCredit": "string", \ "loanPrograms": "string", \ "loanState": "NONE", \ "ltv": 0, \ "maturity": "string", \ "mers_registrations": "string", \ "mi_data": "string", \ "modifications": "string", \ "optional_products": "string", \ "payment": 0, \ "prepayment_Penalty": "string", \ "qualification": "string", \ "servicing": "string", \ "termsOfMortgage": "string", \ "underwriting": "string", \ "id": "string" \ }, \ "combinedLTV": 0, \ "partyRoles": "resource:com.devb.mortgage.Party#PT001", \ "id": "string" \ }, \ "investorFeature": "resource:com.devb.mortgage.Person#PS001", \ "partyRoles": "resource:com.devb.mortgage.Party#PT001", \ "pool": "string", \ "id": "string" \ }, \ "partyRoles": "resource:com.devb.mortgage.Party#PT001", \ "ulddGovtMonitoring": { \ "$class": "com.devb.mortgage.ULDDGovernmentMonitoring", \ "ulddGovtId": "string", \ "hmdaEthnicity": "string", \ "hmdaEthnicityOrigin": "string", \ "hmdaRaceDesignation": "string", \ "hmdaRaceDetail": "string", \ "id": "string" \ }, \ "id": "string" \ } \ }' 'http://localhost:3000/api/ULDD30'

Congratulations

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