This technical report introduces the concept of Evidence Compression Risk: the probability-weighted financial exposure that arises when the evidence required by a buyer, importer, lender, auditor, regulator or board exceeds a supplier’s ability to produce granular, traceable, current and defensible documentation within the transaction timeline. The report analyzes how EU regulatory simplification may reduce formal reporting volume while increasing the commercial importance of the remaining evidence required in transactions, supplier onboarding, customs processes, procurement reviews, audit requests, lending diligence and board-level governance. The analysis covers ESRS/CSRD simplification, the definitive CBAM regime, EUDR due diligence expectations, CSDDD chain-of-activities obligations and the EU-Brazil/Mercosur trade context. It focuses on Brazilian exporters and suppliers exposed to European value chains, where regulatory expectations may be transmitted indirectly through contracts, supplier codes, data requests, audit clauses, customs documentation, warranty language and financing diligence. The report proposes an evidence architecture model covering operational traceability, regulatory mapping, buyer-readable documentation, contract-evidence alignment, version control, methodology notes, financial exposure logic, Monte Carlo model architecture, supplier evidence readiness scoring and board-level governance. This document is a technical risk analysis and evidence architecture framework. It is not legal advice, tax advice, customs advice, an assurance opinion, a certification, an audit report or a guarantee of regulatory acceptance.