OpenChainGraph Suite · CONTRACT A3

EUDI Credential Acceptance and VoP Session Evidence

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.
Reading mode (RUNBOOK): Read these steps in this order. Credential acceptance readiness is the widest question, verification-of-payee readiness narrows it to the payee-matching leg, and the session receipt records one concrete attempt. Each step is supplied its own inputs; nothing is threaded between them.

EUDI Wallet credential acceptance readiness > verification-of-payee readiness diagnostic > hash-chained VoP session receipt. Three independent computations over a payment service provider's payee-verification surface. EUDI Wallet member-state rollout is dated November 2026.

OpenChainGraph · 3 Steps compliance mandate Hash-Anchored §4 chain_depth:3 Client-Side · Zero PII
Chain Topology: EUDI Credential Readiness → VoP Readiness Diagnostic → VoP Session Receipt
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Market Rationale
Buyer: payment service provider compliance or product owner accepting wallet-held credentials and running verification of payee
Forcing function: eIDAS 2.0 (Regulation (EU) 2024/1183) EUDI Wallet member-state rollout dated November 2026, with obliged-entity acceptance dated December 2027; EU Instant Payments Regulation verification of payee already in force
Chain Stages · 3 Steps
1 ROOT node
EUDI Wallet Credential-Acceptance Readiness Checker art-13-eudi-wallet-credential-readiness-checker
Credential acceptance readiness score, gap list and relying-party obligations for the declared credential format and issuer country. Stage 1 of 3.
↓
2 D2 node
VoP Readiness Diagnostic art-548-vop-readiness-diagnostic
Verification-of-payee readiness diagnostic over the declared scheme posture and matching configuration. Stage 2 of 3.
↓
3 TERMINAL · D3 node
VoP Session Receipt Builder art-377-build-vop-session-receipt
Hash-chained VoP session receipt over the declared attempt record, with the session outcome and final receipt hash. Final stage.
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.