OpenChainGraph Suite · CONTRACT A3 · arch #5

Instant Payments & Verification of Payee Readiness

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.

Rail participation readiness > Verification of Payee simulation > intraday liquidity sizing > IPR annual report > instant-payments policy mandate.

OpenChainGraph · 5 Steps compliance mandate Hash-Anchored §4 chain_depth:5 Client-Side · Zero PII
Chain Topology — Rtp Network Participation Checker → Verification Of Payee Simulator → Intraday Credit Facility Sizer → Sepa Ipr Annual Report Builder → Ap2 Rtp Policy Builder
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Live Execution

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Chain Stages · 5 Steps
1 ROOT · D0 catalog
Rtp Network Participation Checker 229-rtp-network-participation-checker
participation_gaps feed Stage 2 VoP simulation
↓
2 D2 catalog
Verification Of Payee Simulator 289-verification-of-payee-simulator
vop_match_rates and response_timing feed Stage 3 liquidity sizing
↓
3 D3 catalog
Intraday Credit Facility Sizer 258-intraday-credit-facility-sizer
intraday_facility_size feeds Stage 4 IPR report
↓
4 D4 catalog
Sepa Ipr Annual Report Builder 349-sepa-ipr-annual-report-builder
ipr_report_data feeds Stage 5 RTP policy mandate
↓
5 TERMINAL · D5 catalog
Ap2 Rtp Policy Builder 259-ap2-rtp-policy-builder
Exports instant-payments Policy Mandate, final stage
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