Write your name on white paper and throw it away. If someone uses it to add content, will it have legal effect?
Usually, if you write your name on white paper and then throw it away, then this paper may be considered as waste paper or garbage and has no legal effect. If others use this paper to add content, it depends on whether the added content has legal significance and influence. If the added content infringes your rights or causes you losses, you can consider taking legal action to safeguard your rights and interests.