khotem.com

ATTEST: certificate of existence. POST body: {"ref":"0x<txHash>" | "<sha256 hex>" | "<16-hex stamp>"} — exact match against the ledger. Returns CONFIRMED + entry, or honest NOT_FOUND.

Open endpoint ↗

Price per call: $0.10
Chain: Base
Method: POST
Paid calls · 30 days: 0

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://khotem.com/api/attest", { method: "POST" });
console.log(await res.json());

https://khotem.com/api/attest