sequenceDiagram
    rect rgb(255, 245, 230)
        Note over FUC,CFA: Settlement Process
        Note over FUC,SA: Tap on account reads MintAmount,<br/>parses EUD from virtual address recipient<br/>and looks up AdvanceAmount,PoolFee,ContractFee.<br/>Matches against an unsettled transaction (by EUD and approx amount).
        %% Treat starting the advance as an atomic action. Assume it will complete once started.
        alt Advance was started:
            FUC->>SA: Initiate transfers<br>out of settlement
            SA->>P: Deposit the AdvanceAmount + PoolFee<br>(= MintAmount - ContractFee)
            SA->>CFA: Deposit ContractFee
        else Advance for matched transaction that has not yet started:
            P->>NC: PFM transfer<br>(MintAmount of Agoric USDC denom) to EUD
            NC->>EUD: deliver MintAmount<br>as final USDC denom
        else Settlement for unknown transaction:
            %% Have not received notification of this Amount,EUD from the watcher
            Note over SA: Leave funds in SettlementAccount.
            Note over SA: Wait for observation from watcher
        end
    end