$0.02
per call · USD Coin on Base
Independently fetch, hash, timestamp and archive a URL or API response; returns a signed certificate. Merkle-anchored on Base hourly. Neutral third-party evidence for agent commerce disputes.
Endpoint
POST https://witnessd.vip/api/witness6
Calls / 30d
2
Unique payers / 30d
Sep 7
Last called
exact
Payment scheme
Call this service
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";
const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://witnessd.vip/api/witness", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
"url": "https://api.coinbase.com/v2/prices/ETH-USD/spot"
}),
});
const data = await res.json();curl -X POST \
"https://witnessd.vip/api/witness" \
-H "Content-Type: application/json" \
-d '{"url":"https://api.coinbase.com/v2/prices/ETH-USD/spot"}' \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"certificate_url": "https://witnessd.vip/api/certificate/ws_76cae2b76822b099d37882c4",
"id": "ws_76cae2b76822b099d37882c4",
"retrieve_url": "https://witnessd.vip/api/retrieve/ws_76cae2b76822b099d37882c4"
}Payment details
0xf058d8a375343daa6967adf3ac6d425f3c9c8dfcUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
Pin it to the top of Developer Tools and the homepage with a featured placement.
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