---
title: "Detect self-funded x402 tests and audit settlement authenticity"
method: POST
path: "/api/x402/demand-authenticity-report"
tags: ["x402-settlement", "settlement-authenticity", "payer-concentration", "demand-evidence", "base-usdc"]
---

# Detect self-funded x402 tests and audit settlement authenticity

`POST /api/x402/demand-authenticity-report`

Classify up to 20 Base USDC settlement receipts as direct self-payment, user-declared related-party, or unattributed; measure payer concentration; and return evidence for each result. Use it before treating raw x402 settlement counts as customer adoption. Unattributed activity is not claimed as an independent customer purchase.

## Request body

- object
  - `expected_recipient` string
  - `related_addresses` string[]
  - `tx_hashes` string[], required

## Response `200`

Paid batch evidence report

## Other responses

- `402` — x402 v2 payment challenge

---

[API](https://skmtc.net/ontarioprotocol/apis/ontario-protocol-x402-api.md) · [All operations](https://skmtc.net/ontarioprotocol/apis/ontario-protocol-x402-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ontarioprotocol/ontario-protocol-x402-api/versions/54384a1c4bf3/schema)