Trial Registry Records Timestamp Order Audit

{
  "data": {
    "chargedAmount": "15333",
    "inputHash": "sha256:271cc1c565c13ffedef995506d099007ceb487287a23fa29798f7d468…",
    "limitations": [
      "Public or synthetic nonpersonal metadata only; these are caller …"
    ],
    "productId": "trial-registry-records-timestamp-order-audit",
    "result": {
      "authoritativeSourcesConsulted": false,
      "domainValidationEstablished": false,
      "findings": [],
      "method": "trial-registry-records-timestamp-order-audit/1",
      "metrics": [
        {
          "key": "trial-registry-records-complete-ordered-records",
          "recordId": "trial-registry-records",
          "value": "1"
        }
      ]
    },
    "resultHash": "sha256:e2faf871224dfb3ba8bece85e85076559c8a8cf41e31da901eda71534…",
    "version": "maha-typed-metadata-audit/1"
  },
  "proof": {
    "settlement_id": "0x00000000000000000000000000000000000000000000000000000000000000…"
  },
  "success": true
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://www.mahastrategies.com/api/v1/intel/trial-registry-records/timestamp-order-audit' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-01T00:00:00.000Z","dataClass":"synthetic","nonpersonalMetadata":true,"protocolDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","registryRef":"declared-registry1","rows":[{"id":"trial1","postedAt":"2026-01-01T00:00:00.000Z","protocolDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","registryRef":"declared-registry1","retrievedAt":"2026-01-01T00:00:00.000Z","snapshotDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","snapshotRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","studyRef":"NCT00000001","submittedAt":"2026-01-01T00:00:00.000Z","updatedAt":"2026-01-01T00:00:00.000Z"}],"snapshotDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","snapshotRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","studyRef":"NCT00000001"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://www.mahastrategies.com/api/v1/intel/trial-registry-records/timestamp-order-audit' \
  -H 'content-type: application/json' \
  --data-raw '{"assessedAt":"2026-01-01T00:00:00.000Z","dataClass":"synthetic","nonpersonalMetadata":true,"protocolDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","registryRef":"declared-registry1","rows":[{"id":"trial1","postedAt":"2026-01-01T00:00:00.000Z","protocolDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","registryRef":"declared-registry1","retrievedAt":"2026-01-01T00:00:00.000Z","snapshotDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","snapshotRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","studyRef":"NCT00000001","submittedAt":"2026-01-01T00:00:00.000Z","updatedAt":"2026-01-01T00:00:00.000Z"}],"snapshotDigest":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","snapshotRevision":"sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa","studyRef":"NCT00000001"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.015333 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.015333" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.015333 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fintel%2Ftrial-registry-records%2Ftimestamp-order-audit&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/intel/trial-registry-records/timestamp-order-audit", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "assessedAt": "2026-01-01T00:00:00.000Z",
    "dataClass": "synthetic",
    "nonpersonalMetadata": true,
    "protocolDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "registryRef": "declared-registry1",
    "rows": [
      {
        "id": "trial1",
        "postedAt": "2026-01-01T00:00:00.000Z",
        "protocolDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "registryRef": "declared-registry1",
        "retrievedAt": "2026-01-01T00:00:00.000Z",
        "snapshotDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "snapshotRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
        "studyRef": "NCT00000001",
        "submittedAt": "2026-01-01T00:00:00.000Z",
        "updatedAt": "2026-01-01T00:00:00.000Z"
      }
    ],
    "snapshotDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "snapshotRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
    "studyRef": "NCT00000001"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.015333 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.015333"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://www.mahastrategies.com/api/v1/intel/trial-registry-records/timestamp-order-audit",
        json={
            "assessedAt": "2026-01-01T00:00:00.000Z",
            "dataClass": "synthetic",
            "nonpersonalMetadata": True,
            "protocolDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "registryRef": "declared-registry1",
            "rows": [
                {
                    "id": "trial1",
                    "postedAt": "2026-01-01T00:00:00.000Z",
                    "protocolDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "registryRef": "declared-registry1",
                    "retrievedAt": "2026-01-01T00:00:00.000Z",
                    "snapshotDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "snapshotRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
                    "studyRef": "NCT00000001",
                    "submittedAt": "2026-01-01T00:00:00.000Z",
                    "updatedAt": "2026-01-01T00:00:00.000Z",
                },
            ],
            "snapshotDigest": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "snapshotRevision": "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
            "studyRef": "NCT00000001",
        },
    )
    print(res.status_code, res.text)