OpenChainGraph Suite · CONTRACT A3 · arch #5

E-Invoicing & ViDA Digital Reporting

Note (dated 2026-08-04): a chain composes independent computations performed in an analytical order. No step's output is carried into the next step by the execution model; each step computes from its own declared inputs. This is true of every chain on this site, including chains whose per-step copy below reads as a data handoff.

DRR readiness > B2B e-invoice compliance (EN16931) > Peppol XML audit > invoice-to-ISO20022 bridge > e-invoicing compliance mandate.

OpenChainGraph · 4 Steps compliance mandate Hash-Anchored §4 chain_depth:4 Client-Side · Zero PII
Chain Topology — Vida Drr Readiness Scorer → B2b Einvoice Compliance Scorer → Peppol Xml Auditor → Invoice To Iso20022 Bridge
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Live Execution

This page is the chain definition (plan). To run the chain step by step in your browser, with each step's kernel executing in-page and a composite hash over the outputs, open the live runner:

▶ Run this chain in your browser
Chain Stages · 4 Steps
1 ROOT · D0 catalog
Vida Drr Readiness Scorer 179-vida-drr-readiness-scorer
drr_gaps feed Stage 2 e-invoice compliance scoring
↓
2 D2 catalog
B2b Einvoice Compliance Scorer 180-b2b-einvoice-compliance-scorer
compliance_score and field_errors feed Stage 3 XML audit
↓
3 D3 catalog
Peppol Xml Auditor 174-peppol-xml-auditor
xml_validation_results feed Stage 4 ISO 20022 bridge
↓
4 TERMINAL · D4 catalog
Invoice To Iso20022 Bridge 178-invoice-to-iso20022-bridge
Exports e-invoicing Policy Mandate, final stage
▶ Run this chain (live) browser · real execution · composite §4 hash
Export Artifacts
Download the §4 chain definition artifact (hash-anchored composite JSON) or the §13.11 W3C Verifiable Credentials view. Both derive from the chain definition — no new hash is minted. Available after hash computation.