Please help us to identify the authenticity of this "Daming Xuande" toad. thank you

No, this kind of calligraphy is made by the government. The workmanship is very good. You haven't even cleaned the burr on it. Generally, calligraphy is plain font, and even gold is painted with real gold. This is obviously the gold powder of brass grinding, which is very common now. This kind of knowledge is the knowledge of Xuande furnace, and it is easy to distinguish between true and false. If you have a detailed picture, you can send it, so you can confirm it!