diff --git a/main/db.sql b/main/db.sql
index a73ae5c..0606b20 100644
--- a/main/db.sql
+++ b/main/db.sql
@@ -24,8 +24,22 @@ CREATE TABLE users (
 
 CREATE TABLE registrations (
     id INT AUTO_INCREMENT PRIMARY KEY,
-    ip VARCHAR(45) NOT NULL,
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-    INDEX idx_ip_created (ip, created_at),
     INDEX idx_created_at (created_at)
-); 
\ No newline at end of file
+);
+
+DELIMITER //
+CREATE PROCEDURE migrate_if_needed()
+BEGIN
+    IF EXISTS (
+        SELECT * FROM information_schema.columns 
+        WHERE table_name = 'registrations' AND column_name = 'ip'
+    ) THEN
+        DROP INDEX IF EXISTS idx_ip_created ON registrations;
+        ALTER TABLE registrations DROP COLUMN ip;
+    END IF;
+END //
+DELIMITER ;
+
+CALL migrate_if_needed();
+DROP PROCEDURE migrate_if_needed(); 
\ No newline at end of file
diff --git a/main/register.php b/main/register.php
index ce5ee64..a533b51 100644
--- a/main/register.php
+++ b/main/register.php
@@ -23,7 +23,6 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     $username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
     $password = filter_input(INPUT_POST, 'password', FILTER_SANITIZE_STRING);
     $pgp_key = filter_input(INPUT_POST, 'pgp_key', FILTER_SANITIZE_STRING);
-    $ip = $_SERVER['REMOTE_ADDR'];
 
     if ($username && $password) {
         if (strlen($username) > 50 || strlen($password) < 8 || !preg_match('/^[a-zA-Z0-9_]+$/', $username)) {
@@ -31,12 +30,12 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         } else if (strlen($pgp_key) > 4096) {
             $error = 'PGP key is too long';
         } else {
-            $stmt = $db->prepare('SELECT COUNT(*) FROM registrations WHERE ip = ? AND created_at > DATE_SUB(NOW(), INTERVAL 1 HOUR)');
-            $stmt->execute([$ip]);
+            $stmt = $db->prepare('SELECT COUNT(*) FROM registrations WHERE created_at > DATE_SUB(NOW(), INTERVAL 1 HOUR)');
+            $stmt->execute();
             $count = $stmt->fetchColumn();
 
-            if ($count >= 5) {
-                $error = 'Registration limit exceeded for your IP';
+            if ($count >= 20) {
+                $error = 'Registration limit exceeded';
             } else {
                 try {
                     $stmt = $db->prepare('INSERT INTO users (username, password, pgp_key, login_attempts, last_attempt) VALUES (?, ?, ?, 0, NOW())');
@@ -46,8 +45,8 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
                         $pgp_key
                     ]);
                     
-                    $stmt = $db->prepare('INSERT INTO registrations (ip) VALUES (?)');
-                    $stmt->execute([$ip]);
+                    $stmt = $db->prepare('INSERT INTO registrations () VALUES ()');
+                    $stmt->execute();
                     
                     $success = 'Registration successful';
                 } catch (PDOException $e) {