diff --git a/modules/api/auth.py b/modules/api/auth.py
index f80218f..ae5d82c 100644
--- a/modules/api/auth.py
+++ b/modules/api/auth.py
@@ -36,6 +36,7 @@ class auth:
             self.cursor.execute(f"SELECT `id` FROM `auth_roles` WHERE `name` = %s ;", (roles,) )
             result_roles = self.cursor.fetchone()
             loggorilla.prcss(APIADDR, "Process parameters")
+            ls_roles	= [ result_roles["id"] ]
             hashed	= bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
             token	= saltedkey.token(username, hashed)
             if globalvar.production == True:
@@ -51,11 +52,7 @@ class auth:
             result_validation = procedure_validation.validation().register(APIADDR, captcha, score, roles, username, password, email)
             if result_validation['status'] == "valid":
                 loggorilla.prcss(APIADDR, "Inserting")
-                self.cursor.execute("INSERT INTO `auth` VALUES (%s, %s);", (token, hashed) )
-                self.cursor.execute("INSERT INTO `auth_profile` VALUES (DEFAULT, %s, %s, %s, NULL);", (token, username, email) )
-                auth_profile_lastrowid = self.cursor.lastrowid
-                self.cursor.execute("INSERT INTO `auth_profile_verification` VALUES (DEFAULT, %s, 'email', 0);", (auth_profile_lastrowid,) )
-                self.cursor.execute("INSERT INTO `auth_profile_roles` VALUES (DEFAULT, %s, %s);", (auth_profile_lastrowid, result_roles['id']) )
+                self.cursor.execute("CALL sp_auth_add(%s, %s, %s, %s, %s, %s);", (token, hashed, username, email, 0, str(ls_roles)) )
                 loggorilla.prcss(APIADDR, "Set expired datetime")
                 expired = globalvar.verification_link_expiration
                 expired_isoformat = expired.isoformat()
@@ -378,12 +375,7 @@ class auth:
                 hashed	= bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()
                 token	= saltedkey.token(username, hashed)
                 loggorilla.prcss(APIADDR, "Inserting")
-                self.cursor.execute("INSERT INTO `auth` VALUES (%s, %s);", (token, hashed) )
-                self.cursor.execute("INSERT INTO `auth_profile` VALUES (DEFAULT, %s, %s, %s, NULL);", (token, username, email) )
-                auth_profile_lastrowid = self.cursor.lastrowid
-                self.cursor.execute("INSERT INTO `auth_profile_verification` VALUES (DEFAULT, %s, 'email', 1);", (auth_profile_lastrowid,) )
-                for role in roles:
-                    self.cursor.execute("INSERT INTO `auth_profile_roles` VALUES (DEFAULT, %s, %s);", (auth_profile_lastrowid, role) )
+                self.cursor.execute("CALL sp_auth_add(%s, %s, %s, %s, %s, %s);", (token, hashed, username, email, 1, str(roles)) )
                 loggorilla.prcss(APIADDR, "Sending email")
                 webmail_data 	= {
                     "username"	: username,
diff --git a/sql/auth.sql b/sql/auth.sql
index 3b6d523..9632978 100644
--- a/sql/auth.sql
+++ b/sql/auth.sql
@@ -1,8 +1,11 @@
 -- README
--- idx_ = index
--- fk_  = foreign
+-- Prefix idx_ = index
+-- Prefix fk_  = foreign
 -- Create an index for fast lookups
 -- Defining constraints separately for better readability & maintainability
+-- Prefix sp_  = Stored Procedure
+-- Prefix p_   = Parameter(s)
+-- Prefix v_   = Variable(s)
 -- NOTE
 -- Next verification variation should be based from identity and contact
 
@@ -75,3 +78,31 @@ INSERT INTO `auth_roles` VALUES
 (3, 'member'	),
 (4, 'tester'	);
 
+DELIMITER //
+CREATE PROCEDURE sp_auth_add(
+	IN p_token binary(40),
+	IN p_hashed binary(60),
+	IN p_username varchar(36),
+	IN p_email LONGTEXT,
+	IN p_verified int(1), -- register:0, accept:1
+	IN p_roles JSON -- example: [1,2,4]. Roles duplication was checked on Back-End side.
+)
+BEGIN
+	DECLARE i INT DEFAULT 0;
+    DECLARE n INT;
+	DECLARE v_auth_profile_lastrowid INT(11);
+	INSERT INTO `auth` VALUES (p_token, p_hashed);
+	INSERT INTO `auth_profile` VALUES (DEFAULT, p_token, p_username, p_email, NULL);
+	SET v_auth_profile_lastrowid = LAST_INSERT_ID();
+	INSERT INTO `auth_profile_verification` VALUES (DEFAULT, v_auth_profile_lastrowid, 'email', p_verified);
+    SET n = JSON_LENGTH(p_roles);
+    WHILE i < n DO
+		INSERT INTO `auth_profile_roles` VALUES (
+			DEFAULT,
+			v_auth_profile_lastrowid,
+			JSON_UNQUOTE(JSON_EXTRACT(p_roles, CONCAT('$[', i, ']')))
+		);
+        SET i = i + 1;
+    END WHILE;
+END //
+DELIMITER ;