OpenChainGraph Suite · CONTRACT A3 · arch #5

Post-Quantum Cryptography Migration

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.

End-to-end PQC migration: crypto asset inventory (NISTIR 8547) > HNDL quantum risk scoring > phased migration roadmap (FIPS 203/204/205) > crypto-agility readiness score.

OpenChainGraph · 4 Steps compliance mandate Hash-Anchored §4 chain_depth:4 Client-Side · Zero PII
Chain Topology — Crypto Asset Inventory Classifier → Hndl Quantum Risk Scorer → Pqc Migration Roadmap Builder → Crypto Agility Readiness Scorer
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Chain Stages · 4 Steps
1 ROOT · D0 catalog
Crypto Asset Inventory Classifier 499-crypto-asset-inventory-classifier
classified_assets and algorithm_status feed Stage 2 HNDL risk scoring
↓
2 D2 catalog
Hndl Quantum Risk Scorer 500-hndl-quantum-risk-scorer
hndl_priority per system feed Stage 3 roadmap
↓
3 D3 catalog
Pqc Migration Roadmap Builder 501-pqc-migration-roadmap-builder
migration_phases and target_algorithms feed Stage 4 agility assessment
↓
4 TERMINAL · D4 catalog
Crypto Agility Readiness Scorer 502-crypto-agility-readiness-scorer
Exports composite PQC migration 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.