How to protect some projects

I will need to deliver a project before receiving any payment. I believe that I will be paid for this job but I would like to have some guaranteed. I thought to use some kind of verification, like a system that checks if the file exists on my server, for example. Is it possible? Is it reliable? Anyone know how can I do a system like that?

Thanks in advance.

You can use the browser object to get the page URL, from here you could make the entire project non-responsive if it wasn't accessed from your domain.

Though any real contract will give you legal protection that is just as, if not more, effective.

RBuster

I would probably add "DEMO" watermark to some layouts (using Text object, not sprite).

Send or upload an exported game.

Don't send the project file until you get your payment.

or use load image from your url, originally you can set sprite with opacity 0, when someone steal your game you change that image to pirate image

Thank you all.

delgado: Great idea. I will use it. Many thanks.