本人確認APIのリファレンスです。

curl -X POST https://api.shieldid.ca/v1/sessions \
  -H "X-Api-Key: vk_sand_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "return_url": "https://yourapp.example/verified",
    "webhook_url": "https://yourapp.example/hooks/shieldid",
    "expected_name": "Jordan Smith",
    "locale": "en",
    "metadata": { "application_id": "app_9182" }
  }'

import crypto from "node:crypto";

function isValidShieldIdSignature(rawBody, signatureHeader, secret) {
  const expected = crypto.createHmac("sha256", secret).update(rawBody).digest("hex");
  const provided = signatureHeader || "";
  const a = Buffer.from(expected, "hex");
  const b = Buffer.from(provided, "hex");
  return a.length === b.length && crypto.timingSafeEqual(a, b);
}

// rawBody must be the exact, unparsed request body
app.post("/hooks/shieldid", express.raw({ type: "application/json" }), (req, res) => {
  const ok = isValidShieldIdSignature(req.body, req.headers["x-bio-signature"], process.env.SHIELDID_WEBHOOK_SECRET);
  if (!ok) return res.status(401).send("invalid signature");

  const result = JSON.parse(req.body);
  // result.session_id, result.status, result.checks, …
  res.status(200).send("ok");
});