Give ERP and accounting systems a UBL 2.1 artifact bound to a signed fiscal receipt.

Problem

Agent purchases still have to enter books. A blockchain transfer is not an invoice. Accounting systems expect structured fiscal documents.

Input

A processed Fiscal402 event: UBL 2.1 XML hashed as exact UTF-8 bytes, plus the fiscal402.receipt that binds that hash.

Fiscal402 processing

Fiscal402 generates UBL 2.1 (EN 16931 flavour) in EUR using USDC→EUR historical FX at settlement time, then stores SHA-256 of the exact generated bytes on the receipt.

Output

Fetchable UBL at GET /settlements/:id/ubl and a receipt whose artifacts.ubl_sha256 must match those exact bytes. No XML C14N.

Limitations

Current FX pair is USDC/EUR only. Generic FX is not implemented.
Fiscal402 does not file VAT returns or replace an accountant.
National clearance networks (SDI, KSeF, PDP, Peppol AP) are not provided.

Integration path

Retrieve UBL and receipt over HTTP after ingest. Bind the two with SHA-256 of the exact UTF-8 invoice bytes. See /docs/ubl and /protocol/artifact-binding.