Integration Docs

member_Payout       = admin_reward_usd × pubcrypto_link_member_percent / 100
publisher_credit_usd = admin_reward_usd
reward_pb           = member_Payout × exchange_rate

curl --request POST \
  "https://pub.cryptolinkforearn.com/api/publisher/embed-tokens" \
  --header "Authorization: Bearer YOUR_PUBLISHER_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
    "site_key": "YOUR_EMBED_KEY",
    "sub_id": "MEMBER_ID",
    "origin": "https://website-b.com",
    "theme": "dark"
  }'

{
  "iframe_url": "https://pub.cryptolinkforearn.com/offerwall/?embed_token=owe_...&theme=dark",
  "expires_in": 60
}

<iframe
  data-pubcrypto-offerwall
  src="IFRAME_URL_FROM_YOUR_SERVER"
  title="Offerwall"
  width="100%"
  height="800"
  frameborder="0"
  style="display:block;width:100%;max-width:100%;border:0"
  sandbox="allow-scripts allow-same-origin allow-forms allow-popups allow-popups-to-escape-sandbox"
  referrerpolicy="no-referrer"
></iframe>
<script>
(function () {
  window.addEventListener("message", function (event) {
    if (event.origin !== "https://pub.cryptolinkforearn.com" || !event.data || event.data.type !== "pubcrypto:offerwall-resize") return;
    var height = Math.round(Math.min(5000, Math.max(360, Number(event.data.height) || 800)));
    var frames = document.querySelectorAll("iframe[data-pubcrypto-offerwall]");
    for (var index = 0; index < frames.length; index += 1) {
      if (frames[index].contentWindow === event.source) frames[index].style.height = height + "px";
    }
  });
}());
</script>

<iframe
  data-pubcrypto-offerwall
  src="https://pub.cryptolinkforearn.com/offerwall/?site_key=YOUR_EMBED_KEY&amp;sub_id=MEMBER_ID"
  title="Offerwall"
  width="100%"
  height="800"
  frameborder="0"
  style="display:block;width:100%;max-width:100%;border:0"
  sandbox="allow-scripts allow-same-origin allow-forms allow-popups allow-popups-to-escape-sandbox"
  referrerpolicy="no-referrer"
></iframe>
<script>
(function () {
  window.addEventListener("message", function (event) {
    if (event.origin !== "https://pub.cryptolinkforearn.com" || !event.data || event.data.type !== "pubcrypto:offerwall-resize") return;
    var height = Math.round(Math.min(5000, Math.max(360, Number(event.data.height) || 800)));
    var frames = document.querySelectorAll("iframe[data-pubcrypto-offerwall]");
    for (var index = 0; index < frames.length; index += 1) {
      if (frames[index].contentWindow === event.source) frames[index].style.height = height + "px";
    }
  });
}());
</script>

curl --request GET \
  "https://pub.cryptolinkforearn.com/api/publisher/pubcrypto-links?site_key=YOUR_EMBED_KEY&sub_id=MEMBER_ID" \
  --header "Authorization: Bearer YOUR_PUBLISHER_API_KEY" \
  --header "Accept: application/json"

<?php
// Your Forward Secret (from App settings page). Keep it private.
$secret = "YOUR_FORWARD_SECRET";

// Read the postback parameters sent by PubCrypto to your server.
$subId       = $_REQUEST['subId']        ?? '';
$transId     = $_REQUEST['transId']      ?? '';
$reward      = $_REQUEST['reward_pb']    ?? '';
$rewardName  = $_REQUEST['reward_name']  ?? '';
$payout      = $_REQUEST['payout_pb']    ?? '';
$status      = $_REQUEST['status']       ?? '';
$clickedAt   = $_REQUEST['clicked_at']   ?? '';
$completedAt = $_REQUEST['completed_at'] ?? '';
$ip          = $_REQUEST['ip']           ?? '';
$country     = $_REQUEST['country']      ?? '';
$signature   = $_REQUEST['signature']    ?? '';

// 1) Verify the signature: md5(subId + transId + reward_pb + secretKey).
if (md5($subId . $transId . $reward . $secret) !== $signature) {
    http_response_code(403);
    exit("ERROR: signature doesn't match");
}

// 2) Prevent double-crediting — skip if this transId was already handled.
if (!isNewTransaction($transId)) {
    echo "ok";
    exit;
}

// 3) Pending (status 0), credit (status 1), or chargeback (status 2).
if ($status == 0) {
    savePendingTransaction($subId, $transId, $reward);
} elseif ($status == 1) {
    addPoints($subId, $reward);
} elseif ($status == 2) {
    subtractPoints($subId, $reward);
}

// 4) Optionally log the rest of the fields for analytics / fraud detection.
logConversion([
    'subId'        => $subId,
    'transId'      => $transId,
    'reward_pb'    => $reward,
    'reward_name'  => $rewardName,
    'payout_pb'    => $payout,
    'status'       => $status,
    'clicked_at'   => $clickedAt,
    'completed_at' => $completedAt,
    'ip'           => $ip,
    'country'      => $country,
]);

// 5) You MUST respond with exactly "ok", or we retry.
echo "ok";