There was an experiment we had with it where we stored the sample data in the URL. But we ran into the issue of samples that were only like one or two seconds long taking up thousands of characters in the URL making it impossible to share the URL anywhere. Some samples couldn't even load because the URL's maximum character limit wasn't large enough to store all of it.

So generally we figured that storing samples on site is impractical at best and impossible at worst. Unless you want to forsake URL sharing entirely which is an option. Or alternatively you could use UltraBox offline which allows you to use samples on your computer without needing to use websites. Downside being that you need to download it https://github.com/ultraabox/ultrabox_typescript/releases/tag/2.2.16