Pharma Serialization & Saleable-Returns Custody

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.

Verify DSCSA T3 + GS1 SGTIN and EPCIS event (art-112) → verify saleable returns against the original transaction (art-113) → assess suspect/illegitimate product and required FDA actions (art-114). Client-side, zero-egress alternative to a permissioned serialization consortium.

OpenChainGraph · 3 Steps compliance mandate DSCSA §582 · EU FMD Hash-Anchored §4 chain_depth:3 Client-Side · Zero PII

Chain Stages · 3 Steps

1 ROOT · D0 node

DSCSA Transaction Statement (T3) Verifier art-112

Verified T3 + SGTIN feeds saleable-returns matching

MCP Call · verify_dscsa_transaction_statement

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_dscsa_transaction_statement",
    "arguments": {
      "sgtin": "00312345678901.12345",
      "transaction_information": true,
      "transaction_history": true,
      "transaction_statement": true,
      "epcis_event_type": "ObjectEvent"
    }
  },
  "id": 1
}

↓

2 D1 node

DSCSA Saleable Returns Verifier art-113

Return verdict feeds suspect-product assessment

MCP Call · verify_saleable_return

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "verify_saleable_return",
    "arguments": {
      "returned_sgtin": "00312345678901.12345",
      "returned_lot": "LOT-2026-001",
      "original_transaction_hash": "sha256:<from step 1>",
      "original_sgtin": "00312345678901.12345",
      "original_lot": "LOT-2026-001",
      "authorized_trading_partner": true
    }
  },
  "id": 2
}

↓

3 TERMINAL · D2 node

DSCSA Suspect/Illegitimate Product Quarantine Assessor art-114

Exports custody artifact with execution_hash — final stage

MCP Call · assess_suspect_product_status

{
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "name": "assess_suspect_product_status",
    "arguments": {
      "sgtin": "00312345678901.12345",
      "suspect_trigger": "saleable_return_refused",
      "counterfeit_evidence": false,
      "serial_verification_attempted": true,
      "quarantine_initiated": true
    }
  },
  "id": 3
}

Question: A pharmacy returned a serialized pack to our wholesaler desk. Does it qualify as a saleable return, or must we refuse it? Run the AINumbers MCP tool `run_chain` with {"chain":"pharma-serialization-custody"} and read `art-113-saleable-returns-verifier.verdict`. Re-run with `inputs` for `art-113-saleable-returns-verifier`, reusing the values that result echoed, with `within_resale_window` set to false. Compare the same field. 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/pharma-serialization-custody.html

Pharma Serialization & Saleable-Returns Custody

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