OpenChainGraph Suite · CONTRACT A3 · arch #5

Payment Economics Benchmarking

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.

Fee benchmark reporting > payment ROI business case > card economics optimisation — composite payment economics benchmarking mandate.

OpenChainGraph · 3 Steps treasury mandate Hash-Anchored §4 chain_depth:3 Client-Side · Zero PII
Chain Topology — Fee Benchmark Report → Payment Roi Business Case → Card Economics Optimizer
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Market Rationale
Buyer: Head of Payments Strategy / CFO at bank or payment firm
Forcing function: Interchange fee caps under review; EU PSR card-fee limits; PSD3 cost transparency mandate
Chain Stages · 3 Steps
1 ROOT · D0 catalog
Fee Benchmark Report 12-fee-benchmark-report
fee_benchmark and competitive_positioning feed Stage 2 payment ROI business case
↓
2 D2 catalog
Payment Roi Business Case 46-payment-roi-business-case
roi_projection and payback_period feed Stage 3 card economics optimisation
↓
3 TERMINAL · D3 catalog
Card Economics Optimizer 85-card-economics-optimizer
card_economics and composite_payment_economics_mandate — final payment economics mandate
▶ 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.