The chain is the enforcement point for payout and debt. Policy is the enforcement point for whether a voucher is issued at all. A failure to attest is fail-closed: captures stay unsubmitted. See Settlement attestation and Policy.
Screening of the borrower’s wallet runs before spend. It is a compliance control, not a claim that every counterparty in the world has been reviewed. See AML screening.
Next steps
Borrower responsibility
Who owes a draw the grant allowed.
Key management
Where each key lives.