OpenChainGraph Suite · CONTRACT A3 · arch #5

US Wealth & Advisory — Reg BI Suitability

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.

Model portfolio risk > Reg BI best-interest check > portfolio construction/rebalancing > costs & fee disclosure > Form CRS.

OpenChainGraph · 5 Steps compliance mandate Hash-Anchored §4 chain_depth:5 Client-Side · Zero PII
Chain Topology — Model Portfolio Risk Analytics → Reg Bi Best Interest Checker → Portfolio Drift Rebalancing → Mifid Costs Charges Calculator → Form Crs Generator
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Chain Stages · 5 Steps
1 ROOT · D0 catalog
Model Portfolio Risk Analytics 429-model-portfolio-risk-analytics
risk_profile and model_allocation feed Stage 2 Reg BI best-interest check
↓
2 D2 catalog
Reg Bi Best Interest Checker 463-reg-bi-best-interest-checker
reg_bi_verdict and obligation_gaps feed Stage 3 portfolio construction
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3 D3 catalog
Portfolio Drift Rebalancing 432-portfolio-drift-rebalancing
rebalancing_trades and cost_estimates feed Stage 4 costs disclosure
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4 D4 catalog
Mifid Costs Charges Calculator 428-mifid-costs-charges-calculator
total_cost_bps and riy feed Stage 5 Form CRS
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5 TERMINAL · D5 catalog
Form Crs Generator 464-form-crs-generator
Exports composite Reg BI suitability 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.