SPV Onchain Services

PD-SPV is registered on on several modules D-Chain as a DApp.

Interactions

Smart Contracts

• Notary Verifier: a simple contract that calls AVIDA sd-jwt verifier to verify the ODP verifiable presentation submitted by a user
• Notarised ODP: Stores information of the underlying ODP, i.e. the owner and states
• Orchestrator: the main contract with interfaces
  • for x/notary to call PostVerExec to instantiate a notarised ODP contract
  • interacts with x/tokenfactory to create and burn SU price syndication units to interact on x/orderbook
  • interacts with the instantiated notarised ODP contracts to instruct listing on x/orderbook when specified by supplier
  • interacts with x/orderbook to create orderbook for specific SU

Module Registrations

• x/notary: for notarisation process for the ODP
• x/tokenfactory: for creating and burning SU & EuroCredits tokens, SU are fungible across the same expiration date
• x/orderbook: for creating price syndication orderbook for SU and EuroCredits

Process Flows

sequenceDiagram
    actor Supplier

    participant M as module
    participant SPV
    participant DSD
    participant ART
    actor Investor
    actor Obligor
    autonumber

    SPV ->> M: x/notary MsgRegisterAsset
    Supplier ->> M: x/notary MsgNotarise;
    M ->> DSD: verify
    DSD -->> M: result
    M ->> M: notarise and burn DTs
    M ->> SPV: on notarise
    SPV ->> M: sell order

    M ->> M: x/matchengine: add sell order to AON orderbook
    Investor ->> M: x/matchengine: add buy order
    M ->> M: x/matchengine: order matching
    M ->> SPV: x/matchengine: on match
    SPV ->> DSD: issue request
    DSD -->> M: x/tokenfactory mint & assign securities
    DSD -->> Supplier: payment
    DSD -->> SPV: ISIN
    SPV -->> M: x/notary update ISIN and owner

    Obligor ->> SPV: payment
    SPV ->> DSD: mature
    DSD ->> M: x/bank burn securities
    DSD ->> Investor: Payment

Implementation Details