Markus Hjort from TomorrowTech presents on DevDay at CordaCon 2019.

1. Corda Data Modeling in RealCorda Data Modeling in Real
Estate TradingEstate Trading
By /Markus Hjort @mhjort

3. The DIAS PlatformThe DIAS Platform
DIAS is a DLT based digital trading platform for the
Finnish residential real estate market.

4. Private Business NetworkPrivate Business Network

5. Every bank has their ownEvery bank has their own
VaultVault

6. Initiators share a VaultInitiators share a Vault

7. Data Model SpecificationData Model Specification

8. Kotlin Data ClassesKotlin Data Classes
data class SharedStateV1 : LinearState {}
data class SellerBankAndInitiatorStateV1 : LinearState {}
data class BuyerBankAndInitiatorStateV1 : LinearState {}
data class BuyerBankAndSellerBankStateV1 : LinearState {}
data class BuyerBankStateV1 : LinearState {}
data class SellerBankStateV1 : LinearState {}

9. Data Evolution via ImplicitData Evolution via Implicit
UpgradesUpgrades
data class AuthorizationV1(
val authorizationText: String,
val authorizationType: String) {
@DeprecatedConstructorForDeserialization(1)
constructor (authorizationText: String) :
this(authorizationText,
AuthorizationType.SHARES_OWNERSHIP_TRANSFER)
}
)

10. Minimal amount of personalMinimal amount of personal
information stored in Ledgerinformation stored in Ledger
data class BankStateUpdateV1(
val userId: String, // Bank Clerk surrogate id
val fromIpAddress: String
)

11. Data Lifecycle and GDPRData Lifecycle and GDPR
Every trade process is a new Linear State (chain)
When trade is completeted Linear State can be
consumed and archived

12. FutureFuture
Archiving using Vault Recycler
Better solution for shared vault (Corda Accounts)