1. 01
   CAPTURE THE CLICK

   Read eutrya_click_id from the attributed visit and store it in first-party session state.

2. 02
   PRESERVE WITH CHECKOUT

   Attach the click ID and your immutable order ID to Checkout Session metadata.

3. 03
   REPORT CONFIRMED PAYMENT

   From your verified server webhook, submit the paid order with the offer conversion key.

4. 04
   RECONCILE THE RESULT

   Retain the returned receipt and compare the accepted conversion with the Eutrya ledger.

const session = await stripe.checkout.sessions.create({
  mode: "payment",
  line_items,
  client_reference_id: orderId,
  metadata: { eutrya_click_id: clickId, order_id: orderId }
});

1. 01
   CAPTURE THE CLICK

   Read eutrya_click_id before redirecting and preserve it in your first-party state.

2. 02
   MAP THE ORDER

   Associate the completed Checkout Session with your order and the saved click ID on your backend.

3. 03
   REPORT CONFIRMED PAYMENT

   After the signed payment event is accepted, submit the normalized paid order from your server.

4. 04
   RECONCILE THE RESULT

   Retain the Eutrya receipt and resolve any rejected or duplicate attribution server-side.

const paymentUrl = new URL(process.env.STRIPE_PAYMENT_LINK_URL);
paymentUrl.searchParams.set("client_reference_id", clickId);
// Save clickId with your order before redirecting the customer.
return redirect(paymentUrl);

1. 01
   CAPTURE THE CLICK

   Persist eutrya_click_id in a secure first-party session or database record.

2. 02
   ATTACH TO THE ORDER

   Copy the click ID to the immutable order record before the customer leaves your checkout.

3. 03
   REPORT CONFIRMED PAYMENT

   Submit from your backend only after your payment system marks the order paid.

4. 04
   RECONCILE THE RESULT

   Store the response receipt and use Eutrya's server status as the attribution record.

const order = await orders.markPaid(providerEvent);
await reportEutryaConversion({
  click_id: order.eutrya_click_id,
  offer_id: order.eutrya_offer_id,
  external_order_reference: order.id,
  gross_amount_minor: order.total_minor,
  currency: order.currency,
  occurred_at: new Date(order.paid_at).toISOString()
});

1. 01
   CAPTURE THE CLICK

   Persist eutrya_click_id with the customer session before purchase.

2. 02
   NORMALIZE THE EVENT

   Map the provider's order, amount, currency, and saved click ID to your canonical order.

3. 03
   REPORT CONFIRMED PAYMENT

   Verify the provider signature, then submit the paid order from your webhook handler.

4. 04
   RECONCILE THE RESULT

   Persist both provider evidence and the Eutrya receipt for server-side review.

verifyProviderSignature(request);
const order = await findOrder(request);
await fetch("https://eutrya.com/v1/external-conversions", {
  method: "POST",
  headers: {
    Authorization: `EutryaConversion ${process.env.EUTRYA_CONVERSION_KEY}`,
    "Content-Type": "application/json",
    "Idempotency-Key": `paid-${order.id}`,
    "X-Eutrya-Timestamp": new Date().toISOString()
  },
  body: JSON.stringify({
    offer_id: order.eutrya_offer_id,
    click_id: order.eutrya_click_id,
    external_order_reference: order.id,
    gross_amount_minor: order.total_minor,
    currency: order.currency,
    occurred_at: new Date(order.paid_at).toISOString()
  })
});