Nikolaj

verifyhash-einvoice

Last released Jul 30, 2026

Zero-dependency EN 16931 / XRechnung (UBL + CII) e-invoice conformance validator — 297 business rules including the national BR-DE and BR-DEX CIUS/extension layers, each differential-tested to 0 divergences against the official Schematron within the implemented set; every fireable BR-CL-* code-list check is now implemented in both syntaxes; see CORRECTNESS.md for the honest remaining scope.