Is there a whitepaper? Difficult to analyze the system and decide whether it's going to do a good job, be safe against adversaries and manipulation, etc. withou

Is there a whitepaper? Difficult to analyze the system and decide whether it's going to do a good job, be safe against adversaries and manipulation, etc. without seeing some sort of high level description of how it works. Knowing it uses php and mysql doesn't tell me anything about the actual application.