i figured it out

src/lib/hash.cr

@@ -55,13 +55,11 @@ module CrystalGauntlet::Hashes
   end
 
   def gen_pack(map_packs : Array(Tuple(Int32, Int32, Int32))) : String
-    puts map_packs
-    
     Digest::SHA1.hexdigest do |ctx|
       map_packs.each.with_index() do |val, index|
         level_id, stars, coins = val
         level_id_str = level_id.to_s
-        ctx.update "#{level_id_str[0]}#{level_id_str[-1]}#{stars}#{coins ? 1 : 0}"
+        ctx.update "#{level_id_str[0]}#{level_id_str[-1]}#{stars}#{coins}"
       end
 
       ctx.update "xI25fpAapCQg"