Food Traceability & 24-Hour Recall

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.

Validate Critical Tracking Event KDEs (art-118) → link Traceability Lot Code chain across CTEs, detect transformation events (art-119) → one-up/one-back recall trace emitting the FDA 24-hour sortable list (art-120). Zero-egress alternative to a food safety consortium. Enforcement July 2028.

OpenChainGraph · 3 Steps compliance mandate FSMA 204 · FDA · Jul 2028 GS1 EPCIS 2.0 Hash-Anchored §4 chain_depth:3 Client-Side · Zero PII

Chain Stages · 3 Steps

1ROOT · D0node

FSMA 204 Critical Tracking Event (CTE) Validator art-118

Validated CTE KDEs feed lot code linkage

MCP Call · validate_fsma204_cte

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "validate_fsma204_cte",
    "arguments": {
      "cte_type": "shipping",
      "kdes": {
        "traceability_lot_code": "TLC-2026-SPINACH-001",
        "ship_to_location": "GLN-0312345000016",
        "ship_date": "2026-06-01",
        "quantity": "500 lbs",
        "reference_document": "BOL-20260601-001"
      },
      "ftl_food": "fresh cut spinach"
    }
  },
  "id": 1
}

↓

2D1node

FSMA 204 Traceability Lot Code Chain Linker art-119

Lot code lineage feeds recall trace resolution

MCP Call · link_traceability_lot_code

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "link_traceability_lot_code",
    "arguments": {
      "events": [
        {"cte":"harvesting","tlc":"TLC-001","prev_tlc":null,"location_gln":"GLN-FARM","date":"2026-05-01"},
        {"cte":"shipping","tlc":"TLC-001","prev_tlc":"TLC-001","location_gln":"GLN-DC","date":"2026-05-03"},
        {"cte":"receiving","tlc":"TLC-001","prev_tlc":"TLC-001","location_gln":"GLN-STORE","date":"2026-05-05"}
      ]
    }
  },
  "id": 2
}

↓

3TERMINAL · D2node

FSMA 204 Recall Trace Resolver (24-Hour FDA List) art-120

Exports recall trace artifact with execution_hash — final stage

MCP Call · resolve_recall_trace

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "resolve_recall_trace",
    "arguments": {
      "contaminated_tlc": "TLC-CONTAM",
      "direction": "both",
      "edges": [
        {"from_tlc":"TLC-FARM-A","to_tlc":"TLC-CONTAM","from_gln":"GLN-001","to_gln":"GLN-002","date":"2026-05-01"},
        {"from_tlc":"TLC-CONTAM","to_tlc":"TLC-STORE-1","from_gln":"GLN-002","to_gln":"GLN-003","date":"2026-05-05"}
      ]
    }
  },
  "id": 3
}

Question: FDA gives us 24 hours. From the contaminated lot code, how many lots fall inside the recall window? Run the AINumbers MCP tool `run_chain` with {"chain":"food-traceability-fsma204"} and read `art-120-recall-trace-resolver.traced_count`. 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/food-traceability-fsma204.html

Food Traceability & 24-Hour Recall

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