# GovChain Federal Contract Intelligence & Provenance Verification

> GovChain Federal Contract Intelligence & Provenance Verification is a paid API for AI agents from govchain.us, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-17).

Verifies product or seal authenticity and logs compliance provenance on-chain for Made-in-USA and federal contract intelligence use cases.

## Facts

- Endpoint: POST https://govchain.us/api/x402?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/govchain-federal-contract-intelligence-provenance-verification-c1eee3e0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TS-Fntdj1pdYddxrEVIpI

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability govchain-federal-contract-intelligence-provenance-verification-c1eee3e0 -d '<json body>'
```

Example prompt: Can you verify the authenticity of this product seal — seal ID 'SEAL-2024-ALPHA-99', serial 'SN-88712', product 'PROD-4421' — and tell me the authenticity score and whether it's trustlessly settled on-chain?

## When to prefer this

Choose this endpoint when you need cryptographically-anchored provenance logging combined with AI-driven authenticity scoring for federal procurement compliance — specifically for Made-in-USA validation, SAM.gov bid preparation, or building an immutable audit trail for government contract submissions. Prefer over generic document verification tools when the use case involves federal supplier credentials, seal authentication, or blockchain-backed compliance records.

## Known failure modes

- Unrecognized seal ID returns verified: false with authenticityScore 0
- Missing required body fields (type, method, bodyType, body) causes validation error
- Invalid method enum value (not POST/PUT/PATCH) causes schema rejection
- On-chain settlement failure may return txHash: 0x with trustless flag still set
- Registry lookup not bound on edge paths returns note but no registry data

## How this service works

GovChain turns SAM.gov into pursue-ready intelligence: AI fit-scoring, auto-drafted capability statements, and an immutable on-chain public datalog for Made-in-USA and federal compliance.

## Output

Returns a JSON object containing: verified (boolean), authenticityScore (0–1 numeric confidence), subject identifier, settlement details (payer address, transaction hash, trustless flag, atomic USDC amount paid), and a human-readable note about the registry lookup result.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {
      "sealId": {
       "type": "string",
       "description": "Optional seal id to verify"
      },
      "serial": {
       "type": "string"
      },
      "productId": {
       "type": "string"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "details": {
   "note": "Paid settlement accepted; registry lookup is not bound on this edge path."
  },
  "subject": "demo",
  "verified": false,
  "settlement": {
   "payer": "0x0000000000000000000000000000000000000000",
   "txHash": "0x",
   "trustless": true,
   "amountAtomic": "50000"
  },
  "authenticityScore": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/govchain-federal-contract-intelligence-provenance-verification-c1eee3e0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from govchain.us](https://www.zero.xyz/host/govchain.us/llms.txt)