How to check integrity of Rocky Linux installation

Hi, I purchased a virtual server from some serverhosting company. Then I installed Rocky Linux using their web-based console. I couldn’t use my own ISO image, I could only choose “Rocky 9.2 ISO” in their web administration. Now the system is installed, I can connect there as root over ssh. How can I check if the system was really installed from original Rocky ISO without any modifications or backdoors from serverhosting company?

Most hosting companies have their own install images for an OS. I would seriously doubt that a reputable hosting company would backdoor their images. That would just be plain stupid. If anyone with any security knowledge found that out and published of such a situation, that hosting company would be finished immediately - nobody would do business with them.