OpenChainGraph Suite · CONTRACT A3 · arch #5

Payment Economics Benchmarking

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

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2 D2 catalog

Payment Roi Business Case 46-payment-roi-business-case

roi_projection and payback_period feed Stage 3 card economics optimisation

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3 TERMINAL · D3 catalog

Card Economics Optimizer 85-card-economics-optimizer

card_economics and composite_payment_economics_mandate — final payment economics mandate

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.