# AuthiChain Physical Product Authenticity Verification

> AuthiChain Physical Product Authenticity Verification is a paid API for AI agents from authichain.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-29).

Verifies the authenticity of a physical product using signed seals and 5-agent consensus, returning an authenticity score and settlement record via x402 pay-per-call.

## Facts

- Endpoint: POST https://authichain.com/api/x402?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/authichain-physical-product-authenticity-verification-51f8919c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nknv7Kz6Z5cROpm_abjRH

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 authichain-physical-product-authenticity-verification-51f8919c -d '<json body>'
```

Example prompt: Can you verify whether this product is genuine? Its seal ID is SEAL-7X42A and the serial number is SN-00192837 — I want to see the authenticity score before I buy it.

## When to prefer this

Choose this endpoint when you need to cryptographically attest that a physical product is genuine, especially when on-chain settlement proof and an authenticity score are required. Ideal for anti-counterfeiting workflows, EU Digital Product Passport compliance, resale marketplace verification, or any agent pipeline that must prove product provenance to a human or another system. Prefer this over generic QR/barcode lookup services when trustless blockchain settlement and multi-agent consensus attestation are required.

## Known failure modes

- Registry lookup not bound on edge path — returns verified:false with authenticityScore:0 and a note in details
- Invalid or missing sealId/serial/productId — request may return unverified result with no registry match
- Payment settlement failure — x402 micropayment not confirmed, call rejected
- Network or consensus timeout — 5-agent consensus may not resolve in time, returning indeterminate result
- Malformed body type — bodyType must be one of json, form-data, or text; mismatches cause schema rejection

## How this service works

AuthiChain is the authentic agentic economy — signed seals, 5-agent consensus, and x402 pay-per-call so agents and humans can prove a physical product is real. EU DPP Readiness is live Stripe checkout.

## Output

Returns a JSON object with: a boolean 'verified' field indicating overall authenticity pass/fail, an 'authenticityScore' (numeric, 0–100 or 0–1 scale), a 'subject' label, 'details' with narrative notes, and a 'settlement' object containing the payer address, transaction hash, amount in atomic units, and trustless flag for the x402 payment record.

## 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/authichain-physical-product-authenticity-verification-51f8919c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from authichain.com](https://www.zero.xyz/host/authichain.com/llms.txt)