diff --git a/api.php b/api.php
index dd74f26..da6459d 100755
--- a/api.php
+++ b/api.php
@@ -65,6 +65,8 @@ OR OTHER DEALINGS IN THE SOFTWARE.
  *     }
  */
 
+use Arionum\Blacklist;
+
 require_once("include/init.inc.php");
 error_reporting(0);
 $ip = san_ip($_SERVER['REMOTE_ADDR']);
@@ -429,10 +431,7 @@ if ($q == "getAddress") {
         api_err("Invalid public key");
     }
     if ($_config['use_official_blacklist']!==false) {
-        $blacklisted=["PZ8Tyr4Nx8MHsRAGMpZmZ6TWY63dXWSCvVQcHHCNLfiP9LmzWhhpCHx39Bhc67P5HMQM9cctEFvcsUdgrkGqy18taz9ZMrAGtq7NhBYpQ4ZTHkKYiZDaSUqQ", //faucet abuser
-        "PZ8Tyr4Nx8MHsRAGMpZmZ6TWY63dXWSCxYDeQHk7Ke66UB2Un3UMmMoJ7RF5vDZXihdEXi8gk8ZBRAi35aFrER2ZLX1mgND7sLFXKETGTjRYjoHcuRNiJN1g" // octaex
-        ];
-        if (in_array($public_key, $blacklisted)) {
+        if (Blacklist::checkPublicKey($public_key)) {
             api_err("Blacklisted account");
         }
     }
diff --git a/include/transaction.inc.php b/include/transaction.inc.php
index 858a1f2..f718de4 100755
--- a/include/transaction.inc.php
+++ b/include/transaction.inc.php
@@ -1,5 +1,7 @@
 <?php
 
+use Arionum\Blacklist;
+
 class Transaction
 {
     // reverse and remove all transactions from a block
@@ -225,11 +227,7 @@ class Transaction
         }
         
         if ($_config['use_official_blacklist']!==false) {
-            $blacklisted=[
-                "PZ8Tyr4Nx8MHsRAGMpZmZ6TWY63dXWSCvVQcHHCNLfiP9LmzWhhpCHx39Bhc67P5HMQM9cctEFvcsUdgrkGqy18taz9ZMrAGtq7NhBYpQ4ZTHkKYiZDaSUqQ", //faucet abuser
-                "PZ8Tyr4Nx8MHsRAGMpZmZ6TWY63dXWSCxYDeQHk7Ke66UB2Un3UMmMoJ7RF5vDZXihdEXi8gk8ZBRAi35aFrER2ZLX1mgND7sLFXKETGTjRYjoHcuRNiJN1g" // octaex
-            ];
-            if (in_array($public_key, $blacklisted)) {
+            if (Blacklist::checkPublicKey($x['public_key'])) {
                 return true;
             }
         }