The final review also caught a real liveness edge case: Very small financed amounts could round one tranche allocation to zero. Fixed by rejecting zero-tranche configurations and zero-tranche…

Covered: • advance / fee monotonicity • full uint256 overflow regression • senior / junior liquidity reverts • settlement fee split • default recovery waterfall • bad debt accounting • underfunded…

Remediation: • oracle now finalizes status + recovered principal • pool stores the immutable outcome • resolveDefault(invoiceId) no longer accepts recovery input • executor only triggers…

Key idea: A passing transaction is not enough. Tests must prove: • principal is conserved • exposure is released once • senior + junior losses equal total loss • failed execution leaves no partial…

Key idea: The oracle reports truth. The pool executes accounting. InvoiceNFT records lifecycle only after accounting is resolved. This separation prevents state/accounting mismatch before settlement…

DAY 94 — Invoice Financing Execution Implemented the core transition from verified invoice to funded credit position. Today was about turning an approved receivable into an active financing position.…

DAY 93 — RWA Risk Manager Built the underwriting layer before funding: • eligibility checks • buyer concentration limits • active exposure tracking • advance calculation • fee math • buyer denylist •…

DAY 91 — InvoiceNFT Registry Implemented the lifecycle source of truth for an RWA invoice financing protocol • non-transferable ERC721 invoice claims • explicit invoice state machine • role-separated…