暗号資産決済

import crypto from "node:crypto";const body = JSON.stringify({  order_id: "order_1042",       // idempotency key  amount: "42.00",              // any amount, in USD  currency: "USD",  url_callback: "https://shop.example.com/webhooks/crypto",});const sign = crypto.createHash("md5")  .update(Buffer.from(body).toString("base64") + process.env.BW_API_KEY)  .digest("hex");const res = await fetch("https://blockwallets.io/v1/payment", {  method: "POST",  headers: {    merchant: process.env.BW_MERCHANT,    sign,    "content-type": "application/json",  },  body,});return redirect((await res.json()).result.url);

import crypto from "node:crypto";export async function POST(req: Request) {  const { sign, ...data } = JSON.parse(await req.text());  const json = JSON.stringify(data).replaceAll("/", "\\/");  const expected = crypto.createHash("md5")    .update(Buffer.from(json).toString("base64") + process.env.BW_API_KEY)    .digest("hex");  if (sign !== expected) return new Response("bad sign", { status: 401 });  if (data.status === "paid" || data.status === "paid_over") {    await credit(data.order_id, data.payment_amount_usd);  }  return new Response("ok");}

POST /webhooks/cryptoContent-Type: application/json{  "type": "payment",  "uuid": "6f1c2a7e…",  "order_id": "order_1042",  "amount": "42.00",  "payment_amount_usd": "42.00",  "status": "paid",  "is_final": true,  "network": "tron",  "payer_currency": "USDT",  "txid": "9c1e…",  "sign": "5f0c9b…e9a1"}