All the code for this website is open source and available on Github: https://github.com/drkhero/isitprovablyfair
If this website gains traction and if there's interest for it, I'll be extending support for other casinos too. Do not hesitate to give feedback and let me know what you all think!
But I am kind of sad though, would have made more sense if you would extend support for other casinos regardless of how much interest the project generates under Bustabit.
And besides, why choose Bustabit? Bustabit is not the most popular and most used online gambling casino on this forum, and personally, i believe that not too many users on this forum are playing there, if you needed alot of interest on this project, you should have choose casinos like Stake, Rollbit, bc.game and so on, this are popular casinos on this forum and I trust alot of users will want to use this your site to verify if the games played on any of this casinos is provably fair.
But all the same, I still hope you would provide support for other casinos regardless of how interest the program generates under Bustabit like I said before.