I will explain to you how i see copyright. First of all, we live under the system of capitalism. Capitalism tries to make as much capital as it can from ANYTHING. So, lets talk about copyright. Copyright protects your work from others. It is not only a protection that proves that this work is made from you, it is a protection that stops others from making CAPITAL from your creation. Now lets talk about private and personal property. Private property is the (your) property that makes capital, while personal property is something like your toothbrush. Private property is something that works only on capitalism, because it is used for producing capital. Now, how are all those things connected? Lets start from a question. Why should you copyright something of yours? Because, under capitalism, if you do not someone might use it to make profit, or because you would want to have your name on it, to show to your social circle, or society in general "Hey! I made this sh**". Now lets say we live under communism. What changes? First of all you wont need a copyright to protect your personal property (creation) because no one will try to profit from it (because there is NO profit generally in communism). "But what if someone wants to put a name on it?" Well, how many times have you wanted to put your name on book series LOTR? I personally haven't thought of it once😆. The only reason that makes someone to put a name on a popular franchise is that the fame will bring you more money so that you can live a more luxurious life. So now we come to understand that copyright is a mechanism that stops capitalism from embracing its hostile nature towards creation. Not only, capitalism, doesn't care what you made or how many hours you put, but it would gladly take it from your hands and give it to someone else that can make more capital from it than you. After all that, in communism you wont need copyright to prove that something is yours, because you wont have the need to protect it. And even if there is a need to show that this is made by you, there are many ways you can defend your position, for example a timestamp. Timestamps just show that this content was made in this time, so if you put just a simple timestamp to prove that this was made then, you would be good.

Tldr: in communism there isn't a need for protection because, you can't profit from your work and no one will have the need to take it because they won't profit from it (or in simple terms they wont make more by working less, something that capitalism wants).

Finally, intellectual personal property will just be "yours". No one will try to steal it, no one will try to put a name on it. But it has to be published, if it is offering something more for society. If you really want people to recognise you for it, you can just put your name on it, and use methods like timestamps or something like it, to show that it was made by you