Is there a free licensing solution for .NET? It can be hosted on the cloud or self-hosted. Requirements: works with C# and unlimited licenses. Can be hosted anywhere, except in the app or in a website (Only the app can access the product keys) Thanks!

Hello there! I am new to this forum and I am also a beginner C# coder. I am trying to make a paid app but I will need to make a license key system. Do anyone know any tutorials I can use for this? It should check the Realtime DB for the license key and check get the processor ID (or any other unique identifier) then it will check your device for the unique id and boom! you are in. Or if there are any other tutorials please do link them in the comments below thanks!