diff --git a/app/models/ban.rb b/app/models/ban.rb
index e234580..5a7eaf9 100644
--- a/app/models/ban.rb
+++ b/app/models/ban.rb
@@ -27,13 +27,12 @@ class Ban < ActiveRecord::Base
   VENT_BANS = "tmp/bans.txt"
 
   attr_protected :id, :created_at, :updated_at
-  attr_accessor :ts, :sign, :len, :user_name
+  attr_accessor :len, :user_name
 
   scope :ordered, order: "created_at DESC"
   scope :effective, conditions: "expiry > UTC_TIMESTAMP()"
   scope :ineffective, conditions: "expiry < UTC_TIMESTAMP()"
 
-  validate :validate_ts
   validate :validate_type
   validate :validate_ventban
   validates_format_of :steamid, with: /\A([0-9]{1,10}:){2}[0-9]{1,10}\Z/, allow_blank: true
@@ -58,12 +57,6 @@ class Ban < ActiveRecord::Base
      TYPE_GATHER => "Gather"}
   end
 
-  def validate_ts
-    if ts and Verification.verify(steamid + ts.to_s) != sign
-      errors.add :ts, I18n.t(:wrong_verification_code)
-    end
-  end
-
   def validate_type
     errors.add :ban_type, I18n.t(:invalid_ban_type) unless types.include? ban_type
   end