OpenChainGraph Suite · CONTRACT A3 · arch #5

ECCN / Dual-Use Classification

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.

Product attributes -> ECCN (EAR) + EU Annex I + controlling regime + licence logic including 2025 emerging-tech controls (ART-94) -> Merkle integrity (cry-04). EU Annex I updated 15 Nov 2025.

OpenChainGraph · 2 Steps cryptographic mandate Hash-Anchored §4 chain_depth:2 Client-Side · Zero PII
Chain Topology — ECCN / Dual-Use Classifier → Merkle Batch Verifier
§4 Execution Hash · Chain Definition Anchor
execution_hash:computing…
Chain Stages · 2 Steps
1 ROOT · D0 node
ECCN / Dual-Use Classifier art-94-eccn-dual-use-classifier
classification + licence requirement (H1) feed the verifier
MCP Call · classify_eccn_dual_use
{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "classify_eccn_dual_use",
    "arguments": {}
  },
  "id": 1
}
https://mcp.ainumbers.co/mcp
↓
2 TERMINAL · D2 node
Merkle Batch Verifier cry-04-merkle-batch-verifier
Exports composite classification artifact with Merkle-root execution_hash (H2), final stage
MCP Call · verify_merkle_batch
{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_merkle_batch",
    "arguments": {}
  },
  "id": 1
}
https://mcp.ainumbers.co/mcp
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.

Ask your agent

Copy this paragraph into Claude, OpenClaw, or any MCP-aware agent to run this whole workflow on the server and check one field that answers a real question.

Question: Customs is holding our control module pending classification. Which ECCN applies, and does exporting it need a licence?
Run the AINumbers MCP tool `run_chain` with {"chain":"export-control-eccn"} and read `art-94-eccn-dual-use-classifier.eccn`.
Verify: call `verify_execution_hash` (https://mcp.ainumbers.co/mcp) with `claimed_hash` set to `composite_execution_hash` and the full `composite_artifact`.
Ledger, for a human re-check: https://ledger.ainumbers.co/
PII rule: send synthetic or anonymised inputs only. The MCP server runs these kernels and logs no payloads.
Chain page: https://ainumbers.co/chaingraph/chains/export-control-eccn.html