Evidence Passage Hashes

{
  "data": {
    "chargedAmount": "10016",
    "inputHash": "sha256:f1ac893fb40f2b7b3a6db5a578ad7a72e7d898dba8c828628c3131caa…",
    "limitations": [
      "Public or synthetic inputs only. Caller labels are declarations,…"
    ],
    "productId": "passage-hash-validation",
    "result": {
      "allMatch": true,
      "checked": 1,
      "dataClass": "synthetic",
      "inputSha256": "sha256:f1ac893fb40f2b7b3a6db5a578ad7a72e7d898dba8c828628c3131caa…",
      "limits": [
        "Public/synthetic is a caller declaration, not content inspection…"
      ],
      "passages": [
        {
          "contentSha256": "sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db698…",
          "expectedHash": "sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db698…",
          "matches": true,
          "passageId": "p1",
          "utf8Bytes": 9
        }
      ],
      "resultSha256": "sha256:4599b9e9a81f30c2eae9031f134395832679fb4210d314a858b0d8260…",
      "sourcesVerified": false
    },
    "resultHash": "sha256:5c2f99ec5d80553ffadda1855982c576ca616662d49fa0315f8abaa0a…",
    "sourceContractAmount": "4000",
    "version": "maha-legacy-adapter/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/verify/evidence/passage-hashes' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","passages":[{"expectedHash":"sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db6981aa9472","passageId":"p1","text":"Evidence."}]}'

# 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/verify/evidence/passage-hashes' \
  -H 'content-type: application/json' \
  --data-raw '{"dataClass":"synthetic","passages":[{"expectedHash":"sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db6981aa9472","passageId":"p1","text":"Evidence."}]}' \
  | 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 $0.010016 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.010016" });
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 $0.010016 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fwww.mahastrategies.com%2Fapi%2Fv1%2Fverify%2Fevidence%2Fpassage-hashes&method=POST
const res = await pay("https://www.mahastrategies.com/api/v1/verify/evidence/passage-hashes", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "dataClass": "synthetic",
    "passages": [
      {
        "expectedHash": "sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db6981aa9472",
        "passageId": "p1",
        "text": "Evidence."
      }
    ]
  }),
});
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 $0.010016 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.010016"})
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/verify/evidence/passage-hashes",
        json={
            "dataClass": "synthetic",
            "passages": [
                {
                    "expectedHash": "sha256:7f2b508f84d9002cf68a41c8d03f4c0dc9cd7cd54e60fc3030b9db6981aa9472",
                    "passageId": "p1",
                    "text": "Evidence.",
                },
            ],
        },
    )
    print(res.status_code, res.text)