OpenChainGraph Suite · CONTRACT A3 · arch #5

Interchange Optimisation to Scheme Compliance

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.

Interchange optimisation > Visa/MC qualification testing > scheme fee benchmarking > 3DS/EMV compliance.

OpenChainGraph · 4 Steps compliance mandate Hash-Anchored §4 chain_depth:4 Client-Side · Zero PII
Chain Topology — Interchange Optimizer → Visa Mc Interchange Qualification Tester → Card Scheme Fee Benchmarking → 3ds Emv Compliance Checker
§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:

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Chain Stages · 4 Steps
1 ROOT · D0 catalog
Interchange Optimizer 52-interchange-optimizer
optimal_mcc and routing_strategy feed T225 qualification testing
↓
2 D2 catalog
Visa Mc Interchange Qualification Tester 225-visa-mc-interchange-qualification-tester
ic_category and qualification_flags feed T233 scheme fee benchmarking
↓
3 D3 catalog
Card Scheme Fee Benchmarking 233-card-scheme-fee-benchmarking
fee_delta and scheme_comparison feed T228 3DS/EMV compliance
↓
4 TERMINAL · D4 catalog
3ds Emv Compliance Checker 228-3ds-emv-compliance-checker
Exports card interchange 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.